前言

接从零开始学springboot-搭建一个可以上线的项目结构-多模块篇(1)

mr-service

目录结构

15.png

mr-service这个模块简单介绍下，impl内放的是实现类，外面定义的是接口，这也是为了遵循基本的开发规范~

RedisService (redis服务类，作者没有定义接口，同学们自行判断)

package com.mrcoder.mrservice;
import com.mrcoder.mrutils.redis.RedisUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;
/**
 * redis 测试业务层
 */
@Service
public class RedisService {
    @Autowired
    private StringRedisTemplate stringRedisTemplate;
    @Autowired
    private RedisUtil redisUtil;//内部封装了 RedisTemplate<String, Object>
    /**
     * 测试存储 String 类型数据
     */
    public void setValue(String key, String string) {
        redisUtil.set(key, string);
    }
    /**
     * 测试读取 String 类型数据
     */
    public Object getValue(String key) {
        boolean flag = redisUtil.hasKey(key);
        Object rs = null;
        if (flag) {
            rs = redisUtil.get(key);
        }
        return rs;
    }
}

StudentService

package com.mrcoder.mrservice;
import com.mrcoder.mrentity.entity.master.Student;
import java.util.List;
public interface StudentService {
    public List<Student> getListByAnno();
    public List<Student> getList();
    public Student getById(Long id);
    public Integer save(Student s);
    public Integer update(Student s);
    public Integer delete(Long id);
    public void trans(int code);
}

TeacherService （作者偷懒，就不实现Teacher服务类了）

package com.mrcoder.mrservice;
public class TeacherService {
}

impl/StudentServiceImpl

package com.mrcoder.mrservice.impl;
import com.mrcoder.mrentity.entity.master.Student;
import com.mrcoder.mrentity.entity.slave.Teacher;
import com.mrcoder.mrentity.mapper.master.StudentMapper;
import com.mrcoder.mrentity.mapper.slave.TeacherMapper;
import com.mrcoder.mrservice.StudentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import java.util.List;
@Service
public class StudentServiceImpl implements StudentService {
    @Autowired
    private StudentMapper studentMapper;
    @Autowired
    private TeacherMapper teacherMapper;
    public List<Student> getListByAnno() {
        return studentMapper.getListByAnno();
    }
    public List<Student> getList() {
        return studentMapper.getList();
    }
    public Student getById(Long id) {
        return studentMapper.getById(id);
    }
    public Integer save(Student s) {
        return studentMapper.insert(s);
    }
    public Integer update(Student s) {
        return studentMapper.update(s);
    }
    public Integer delete(Long id) {
        return studentMapper.delete(id);
    }
    @Transactional
    public void trans(int code) {
        Student s1 = new Student();
        s1.setAge(10);
        s1.setGrade(10);
        s1.setName("s1");
        studentMapper.insert(s1);

        Teacher t1 = new Teacher();
        t1.setAge(10);
        t1.setName("t1");
        t1.setCourse(10);
        teacherMapper.insert(t1);
        int result = 1 / code;
    }
}

impl/TeacherServiceImpl (偷懒不写，咋地）

package com.mrcoder.mrservice.impl;
public class TeacherServiceImpl {
}

mr-utils

目录结构

16.png

redis/RedisUtil

package com.mrcoder.mrutils.redis;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.util.CollectionUtils;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;
/**
 * @Description: redis 工具类
 */
public class RedisUtil {
    private RedisTemplate<String, Object> redisTemplate;
    public void setRedisTemplate(RedisTemplate<String, Object> redisTemplate) {
        this.redisTemplate = redisTemplate;
    }
    /**
     * 指定缓存失效时间
     *
     * @param key  键
     * @param time 时间(秒)
     * @return
     */
    public boolean expire(String key, long time) {
        try {
            if (time > 0) {
                redisTemplate.expire(key, time, TimeUnit.SECONDS);
            }
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
    /**
     * 根据key 获取过期时间
     *
     * @param key 键 不能为null
     * @return 时间(秒) 返回0代表为永久有效
     */
    public long getExpire(String key) {
        return redisTemplate.getExpire(key, TimeUnit.SECONDS);
    }

    /**
     * 判断key是否存在
     *
     * @param key 键
     * @return true 存在 false不存在
     */
    public boolean hasKey(String key) {
        try {
            return redisTemplate.hasKey(key);
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
    /**
     * 删除缓存
     *
     * @param key 可以传一个值 或多个
     */
    @SuppressWarnings("unchecked")
    public void del(String... key) {
        if (key != null && key.length > 0) {
            if (key.length == 1) {
                redisTemplate.delete(key[0]);
            } else {
                redisTemplate.delete(CollectionUtils.arrayToList(key));
            }
        }
    }
    /**
     * 普通缓存获取
     *
     * @param key 键
     * @return 值
     */
    public Object get(String key) {
        return key == null ? null : redisTemplate.opsForValue().get(key);
    }
    /**
     * 普通缓存放入
     *
     * @param key   键
     * @param value 值
     * @return true成功 false失败
     */
    public boolean set(String key, Object value) {
        try {
            redisTemplate.opsForValue().set(key, value);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }

    /**
     * 普通缓存放入并设置时间
     *
     * @param key   键
     * @param value 值
     * @param time  时间(秒) time要大于0 如果time小于等于0 将设置无限期
     * @return true成功 false 失败
     */
    public boolean set(String key, Object value, long time) {
        try {
            if (time > 0) {
                redisTemplate.opsForValue().set(key, value, time, TimeUnit.SECONDS);
            } else {
                set(key, value);
            }
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }

    /**
     * 递增
     *
     * @param key   键
     * @param delta 要增加几(大于0)
     * @return
     */
    public long incr(String key, long delta) {
        if (delta < 0) {
            throw new RuntimeException("递增因子必须大于0");
        }
        return redisTemplate.opsForValue().increment(key, delta);
    }
    /**
     * 递减
     *
     * @param key   键
     * @param delta 要减少几(小于0)
     * @return
     */
    public long decr(String key, long delta) {
        if (delta < 0) {
            throw new RuntimeException("递减因子必须大于0");
        }
        return redisTemplate.opsForValue().increment(key, -delta);
    }
    /**
     * HashGet
     *
     * @param key  键 不能为null
     * @param item 项 不能为null
     * @return 值
     */
    public Object hget(String key, String item) {
        return redisTemplate.opsForHash().get(key, item);
    }
    /**
     * 获取hashKey对应的所有键值
     *
     * @param key 键
     * @return 对应的多个键值
     */
    public Map<Object, Object> hmget(String key) {
        return redisTemplate.opsForHash().entries(key);
    }
    /**
     * HashSet
     *
     * @param key 键
     * @param map 对应多个键值
     * @return true 成功 false 失败
     */
    public boolean hmset(String key, Map<String, Object> map) {
        try {
            redisTemplate.opsForHash().putAll(key, map);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
    /**
     * HashSet 并设置时间
     *
     * @param key  键
     * @param map  对应多个键值
     * @param time 时间(秒)
     * @return true成功 false失败
     */
    public boolean hmset(String key, Map<String, Object> map, long time) {
        try {
            redisTemplate.opsForHash().putAll(key, map);
            if (time > 0) {
                expire(key, time);
            }
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
    /**
     * 向一张hash表中放入数据,如果不存在将创建
     *
     * @param key   键
     * @param item  项
     * @param value 值
     * @return true 成功 false失败
     */
    public boolean hset(String key, String item, Object value) {
        try {
            redisTemplate.opsForHash().put(key, item, value);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
    /**
     * 向一张hash表中放入数据,如果不存在将创建
     *
     * @param key   键
     * @param item  项
     * @param value 值
     * @param time  时间(秒)  注意:如果已存在的hash表有时间,这里将会替换原有的时间
     * @return true 成功 false失败
     */
    public boolean hset(String key, String item, Object value, long time) {
        try {
            redisTemplate.opsForHash().put(key, item, value);
            if (time > 0) {
                expire(key, time);
            }
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
    /**
     * 删除hash表中的值
     *
     * @param key  键 不能为null
     * @param item 项 可以使多个 不能为null
     */
    public void hdel(String key, Object... item) {
        redisTemplate.opsForHash().delete(key, item);
    }
    /**
     * 判断hash表中是否有该项的值
     *
     * @param key  键 不能为null
     * @param item 项 不能为null
     * @return true 存在 false不存在
     */
    public boolean hHasKey(String key, String item) {
        return redisTemplate.opsForHash().hasKey(key, item);
    }
    /**
     * hash递增 如果不存在,就会创建一个 并把新增后的值返回
     *
     * @param key  键
     * @param item 项
     * @param by   要增加几(大于0)
     * @return
     */
    public double hincr(String key, String item, double by) {
        return redisTemplate.opsForHash().increment(key, item, by);
    }
    /**
     * hash递减
     *
     * @param key  键
     * @param item 项
     * @param by   要减少记(小于0)
     * @return
     */
    public double hdecr(String key, String item, double by) {
        return redisTemplate.opsForHash().increment(key, item, -by);
    }
    /**
     * 根据key获取Set中的所有值
     *
     * @param key 键
     * @return
     */
    public Set<Object> sGet(String key) {
        try {
            return redisTemplate.opsForSet().members(key);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
    /**
     * 根据value从一个set中查询,是否存在
     *
     * @param key   键
     * @param value 值
     * @return true 存在 false不存在
     */
    public boolean sHasKey(String key, Object value) {
        try {
            return redisTemplate.opsForSet().isMember(key, value);
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
    /**
     * 将数据放入set缓存
     *
     * @param key    键
     * @param values 值 可以是多个
     * @return 成功个数
     */
    public long sSet(String key, Object... values) {
        try {
            return redisTemplate.opsForSet().add(key, values);
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        }
    }
    /**
     * 将set数据放入缓存
     *
     * @param key    键
     * @param time   时间(秒)
     * @param values 值 可以是多个
     * @return 成功个数
     */
    public long sSetAndTime(String key, long time, Object... values) {
        try {
            Long count = redisTemplate.opsForSet().add(key, values);
            if (time > 0) expire(key, time);
            return count;
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        }
    }
    /**
     * 获取set缓存的长度
     *
     * @param key 键
     * @return
     */
    public long sGetSetSize(String key) {
        try {
            return redisTemplate.opsForSet().size(key);
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        }
    }
    /**
     * 移除值为value的
     *
     * @param key    键
     * @param values 值 可以是多个
     * @return 移除的个数
     */
    public long setRemove(String key, Object... values) {
        try {
            Long count = redisTemplate.opsForSet().remove(key, values);
            return count;
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        }
    }
 //===============================list=================================
    /**
     * 获取list缓存的内容
     *
     * @param key   键
     * @param start 开始
     * @param end   结束  0 到 -1代表所有值
     * @return
     */
    public List<Object> lGet(String key, long start, long end) {
        try {
            return redisTemplate.opsForList().range(key, start, end);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
    /**
     * 获取list缓存的长度
     *
     * @param key 键
     * @return
     */
    public long lGetListSize(String key) {
        try {
            return redisTemplate.opsForList().size(key);
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        }
    }
    /**
     * 通过索引 获取list中的值
     *
     * @param key   键
     * @param index 索引  index>=0时， 0 表头，1 第二个元素，依次类推；index<0时，-1，表尾，-2倒数第二个元素，依次类推
     * @return
     */
    public Object lGetIndex(String key, long index) {
        try {
            return redisTemplate.opsForList().index(key, index);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
    /**
     * 将list放入缓存
     *
     * @param key   键
     * @param value 值
     * @return
     */
    public boolean lSet(String key, Object value) {
        try {
            redisTemplate.opsForList().rightPush(key, value);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
    /**
     * 将list放入缓存
     *
     * @param key   键
     * @param value 值
     * @param time  时间(秒)
     * @return
     */
    public boolean lSet(String key, Object value, long time) {
        try {
            redisTemplate.opsForList().rightPush(key, value);
            if (time > 0) expire(key, time);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
    /**
     * 将list放入缓存
     *
     * @param key   键
     * @param value 值
     * @return
     */
    public boolean lSet(String key, List<Object> value) {
        try {
            redisTemplate.opsForList().rightPushAll(key, value);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
    /**
     * 将list放入缓存
     *
     * @param key   键
     * @param value 值
     * @param time  时间(秒)
     * @return
     */
    public boolean lSet(String key, List<Object> value, long time) {
        try {
            redisTemplate.opsForList().rightPushAll(key, value);
            if (time > 0) expire(key, time);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
    /**
     * 根据索引修改list中的某条数据
     *
     * @param key   键
     * @param index 索引
     * @param value 值
     * @return
     */
    public boolean lUpdateIndex(String key, long index, Object value) {
        try {
            redisTemplate.opsForList().set(key, index, value);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
    /**
     * 移除N个值为value
     *
     * @param key   键
     * @param count 移除多少个
     * @param value 值
     * @return 移除的个数
     */
    public long lRemove(String key, long count, Object value) {
        try {
            Long remove = redisTemplate.opsForList().remove(key, count, value);
            return remove;
        } catch (Exception e) {
            e.printStackTrace();
            return 0;
        }
    }
}

web-service

以上，我们完善了几个公共的子模块，最后，我们来完善下真正的服务子模块，也就是web-service模块

config/datasource/DataSourceConfig

package com.mrcoder.webservice.config.datasource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.jta.atomikos.AtomikosDataSourceBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.DependsOn;
import org.springframework.context.annotation.Primary;
import org.springframework.core.env.Environment;
import javax.sql.DataSource;
import java.util.Properties;
/**
 * 数据源配置类
 */
@Configuration
public class DataSourceConfig {
    @Autowired
    private Environment env;
    @Value("${spring.datasource.type}")
    private String dataSourceType;
    /**
     * 配置主数据源，多数据源中必须要使用@Primary指定一个主数据源
     * 其次DataSource里用的是DruidXADataSource ，而后注册到AtomikosDataSourceBean并且返回
     */
    @Primary
    @Bean(name = "masterDataSource")
    @DependsOn({"txManager"})
    public DataSource masterDataSource() {
        AtomikosDataSourceBean ds = new AtomikosDataSourceBean();
        Properties prop = build(env, "spring.datasource.druid.master.");
        ds.setXaDataSourceClassName(dataSourceType);
        ds.setPoolSize(5);
        ds.setXaProperties(prop);
        return ds;
    }
    /**
     * 配置次数据源
     * 其次DataSource里用的是DruidXADataSource ，而后注册到AtomikosDataSourceBean并且返回
     */
    @Bean(name = "slaveDataSource")
    @DependsOn({"txManager"})
    public DataSource slaveDataSource() {
        AtomikosDataSourceBean ds = new AtomikosDataSourceBean();
        Properties prop = build(env, "spring.datasource.druid.slave.");
        ds.setXaDataSourceClassName(dataSourceType);
        ds.setPoolSize(5);
        ds.setXaProperties(prop);
        return ds;
    }
    private Properties build(Environment env, String prefix) {
        Properties prop = new Properties();
        prop.put("name", env.getProperty(prefix + "name"));
        prop.put("url", env.getProperty(prefix + "url"));
        prop.put("username", env.getProperty(prefix + "username"));
        prop.put("password", env.getProperty(prefix + "password"));
        prop.put("driverClassName", env.getProperty(prefix + "driverClassName", ""));
        prop.put("filters", env.getProperty(prefix + "filters"));
        prop.put("maxActive", env.getProperty(prefix + "maxActive", Integer.class));
        prop.put("initialSize", env.getProperty(prefix + "initialSize", Integer.class));
        prop.put("maxWait", env.getProperty(prefix + "maxWait", Integer.class));
        prop.put("minIdle", env.getProperty(prefix + "minIdle", Integer.class));
        prop.put("timeBetweenEvictionRunsMillis",
                env.getProperty(prefix + "timeBetweenEvictionRunsMillis", Integer.class));
        prop.put("minEvictableIdleTimeMillis", env.getProperty(prefix + "minEvictableIdleTimeMillis", Integer.class));
        prop.put("validationQuery", env.getProperty(prefix + "validationQuery"));
        prop.put("testWhileIdle", env.getProperty(prefix + "testWhileIdle", Boolean.class));
        prop.put("testOnBorrow", env.getProperty(prefix + "testOnBorrow", Boolean.class));
        prop.put("testOnReturn", env.getProperty(prefix + "testOnReturn", Boolean.class));
        prop.put("poolPreparedStatements", env.getProperty(prefix + "poolPreparedStatements", Boolean.class));
        prop.put("maxOpenPreparedStatements", env.getProperty(prefix + "maxOpenPreparedStatements", Integer.class));
        return prop;
    }
}

config/datasource/MasterSqlSessionTemplateConfig

package com.mrcoder.webservice.config.datasource;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.SqlSessionTemplate;
import org.mybatis.spring.annotation.MapperScan;
import org.mybatis.spring.boot.autoconfigure.ConfigurationCustomizer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import javax.sql.DataSource;
/**
 * MasterSqlSessionTemplateConfig配置类
 */
@Configuration
//下面的sqlSessionTemplateRef 值需要和生成的SqlSessionTemplate bean name相同，如果没有指定name,那么就是方法名
@MapperScan(basePackages = {"com.mrcoder.mrentity.mapper.master"}, sqlSessionTemplateRef = "masterSqlSessionTemplate")
public class MasterSqlSessionTemplateConfig {
    @Value("${mybatis.mapper-locations}")
    private String mapper_location;
    @Value("${mybatis.type-aliases-package}")
    private String type_aliases_package;
    @Value("${mybatis.configuration.map-underscore-to-camel-case}")
    private boolean mapUnderscoreToCamelCase;
    //将MybatisConfig类中初始化的对象注入进来
    @Autowired
    private ConfigurationCustomizer customizer;
    private Logger logger = LoggerFactory.getLogger(MasterSqlSessionTemplateConfig.class);
    /**
     * 自定义sqlSessionFactory配置（因为没有用到MybatisAutoConfiguration自动配置类，需要手动配置）
     */
    @Bean
    public SqlSessionFactory masterSqlSessionFactory(@Qualifier("masterDataSource") DataSource dataSource) throws Exception {
        logger.info("mapper文件地址为：{}", mapper_location);
        //在基本的 MyBatis 中,session 工厂可以使用 SqlSessionFactoryBuilder 来创建。
        //而在 MyBatis-spring 中,则使用SqlSessionFactoryBean 来替代：
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        bean.setDataSource(dataSource);
        //如果重写了 SqlSessionFactory 需要在初始化的时候手动将 mapper 地址 set到 factory 中，否则会报错：
        //org.apache.ibatis.binding.BindingException: Invalid bound statement (not found)
        bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources(mapper_location));
        //下面这个setTypeAliasesPackage无效，是mybatis集成springBoot的一个bug，暂时未能解决
        bean.setTypeAliasesPackage(type_aliases_package);
        org.apache.ibatis.session.Configuration configuration = new org.apache.ibatis.session.Configuration();
        logger.info("mybatis配置驼峰转换为：{}", mapUnderscoreToCamelCase);
        configuration.setMapUnderscoreToCamelCase(mapUnderscoreToCamelCase);
        //因为没有用mybatis-springBoot自动装配，所以需要手动将configuration装配进去，要不然自定义的map key驼峰转换不起作用
        customizer.customize(configuration);
        bean.setConfiguration(configuration);
        return bean.getObject();
    }
    /**
     * SqlSessionTemplate 是 SqlSession接口的实现类，是spring-mybatis中的，实现了SqlSession线程安全
     */
    @Bean
    public SqlSessionTemplate masterSqlSessionTemplate(@Qualifier("masterSqlSessionFactory") SqlSessionFactory sqlSessionFactory) {
        SqlSessionTemplate template = new SqlSessionTemplate(sqlSessionFactory);
        return template;
    }
}

config/datasource/SlaveSqlSessionTemplateConfig

package com.mrcoder.webservice.config.datasource;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.SqlSessionTemplate;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import javax.sql.DataSource;
/**
 * SlaveSqlSessionTemplateConfig配置类
 */
@Configuration
@MapperScan(basePackages = {"com.mrcoder.mrentity.mapper.slave"}, sqlSessionTemplateRef = "slaveSqlSessionTemplate")
public class SlaveSqlSessionTemplateConfig {
    @Value("${mybatis.mapper-locations}")
    private String mapper_location;
    @Bean
    public SqlSessionFactory slaveSqlSessionFactory(@Qualifier("slaveDataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        bean.setDataSource(dataSource);
        //如果重写了 SqlSessionFactory 需要在初始化的时候手动将 mapper 地址 set到 factory 中，否则会报错：
        //org.apache.ibatis.binding.BindingException: Invalid bound statement (not found)
        bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources(mapper_location));
        return bean.getObject();
    }
    @Bean
    public SqlSessionTemplate slaveSqlSessionTemplate(@Qualifier("slaveSqlSessionFactory") SqlSessionFactory sqlSessionFactory) {
        SqlSessionTemplate template = new SqlSessionTemplate(sqlSessionFactory);
        return template;
    }
}

config/datasource/TransactionManagerConfig

package com.mrcoder.webservice.config.datasource;
import com.atomikos.icatch.jta.UserTransactionImp;
import com.atomikos.icatch.jta.UserTransactionManager;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.DependsOn;
import org.springframework.transaction.jta.JtaTransactionManager;
import javax.transaction.TransactionManager;
import javax.transaction.UserTransaction;
/**
 * 多数据源事务管理器配置类
 */
@Configuration
public class TransactionManagerConfig {
    /**
     * 分布式事务使用JTA管理，不管有多少个数据源只要配置一个 JtaTransactionManager
     *
     * @return
     */
    @Bean(name = "atomikosTransactionManager", initMethod = "init", destroyMethod = "close")
    public TransactionManager atomikosTransactionManager() throws Throwable {
        UserTransactionManager userTransactionManager = new UserTransactionManager();
        userTransactionManager.setForceShutdown(false);
        return userTransactionManager;
    }
    @Bean(name = "txManager")
    @DependsOn({ "userTransaction", "atomikosTransactionManager" })
    public JtaTransactionManager transactionManager() throws Throwable {
        UserTransaction userTransaction = userTransaction();
        TransactionManager atomikosTransactionManager = atomikosTransactionManager();
        return new JtaTransactionManager(userTransaction, atomikosTransactionManager);
    }
    @Bean(name = "userTransaction")
    public UserTransaction userTransaction() throws Throwable {
        UserTransactionImp userTransactionImp = new UserTransactionImp();
        userTransactionImp.setTransactionTimeout(10000);
        return userTransactionImp;
    }
}

config/wrapper/CustomWrapper

package com.mrcoder.webservice.config.wrapper;
import com.google.common.base.CaseFormat;
import org.apache.ibatis.reflection.MetaObject;
import org.apache.ibatis.reflection.wrapper.MapWrapper;
import java.util.Map;
/**
 * @Description: 自定义wrapper处理spring boot + mybatis返回结果为map时的key值转换为驼峰
 */
public class CustomWrapper extends MapWrapper {
    public CustomWrapper(MetaObject metaObject, Map<String, Object> map) {
        super(metaObject, map);
    }
    @Override
    public String findProperty(String name, boolean useCamelCaseMapping) {
        if (useCamelCaseMapping) {
            return CaseFormat.UPPER_UNDERSCORE.to(CaseFormat.LOWER_CAMEL, name);
        }
        return name;
    }
}

config/wrapper/MapWrapperFactory

package com.mrcoder.webservice.config.wrapper;
import org.apache.ibatis.reflection.MetaObject;
import org.apache.ibatis.reflection.wrapper.ObjectWrapper;
import org.apache.ibatis.reflection.wrapper.ObjectWrapperFactory;
import java.util.Map;
/**
 * 实现接口 ObjectWrapperFactory,通过包装工厂来创建自定义的wrapper
 */
public class MapWrapperFactory implements ObjectWrapperFactory {
    @Override
    public boolean hasWrapperFor(Object object) {
        return object != null && object instanceof Map;
    }
    @Override
    public ObjectWrapper getWrapperFor(MetaObject metaObject, Object object) {
        return new CustomWrapper(metaObject, (Map) object);
    }
}

config/DruidConfig

package com.mrcoder.webservice.config;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
/**
 * 配置 Druid登陆配置（白名单等）
 */
@Configuration
public class DruidConfig {
    @Value("${spring.druid.name}")
    private String name;
    @Value("${spring.druid.pass}")
    private String pass;
    private Logger logger = LoggerFactory.getLogger(DruidConfig.class);
    /**
     * 配置 Druid控制台 白名单、黑名单、用户名、密码等
     * 访问地址  ip+port/projectContextPath/druid/index.html
     */
    @Bean
    public ServletRegistrationBean DruidStatViewServlet() {
        logger.info("servletRegistrationBean configure is starting...");
        //org.springframework.boot.context.embedded.ServletRegistrationBean提供类的进行注册.
        ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(), "/druid/*");
        //添加初始化参数
        servletRegistrationBean.addInitParameter("allow", "*");
        servletRegistrationBean.addInitParameter("loginUsername", name);
        servletRegistrationBean.addInitParameter("loginPassword", pass);
        //是否可以重置
        servletRegistrationBean.addInitParameter("resetEnable", "false");
        return servletRegistrationBean;
    }
    /**
     * 注册一个：filterRegistrationBean
     */
    @Bean
    public FilterRegistrationBean druidStatFilter2() {
        logger.info("filterRegistrationBean configure is starting...");
        FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter());
        //添加过滤规则.
        filterRegistrationBean.addUrlPatterns("/*");
        //添加不需要忽略的格式信息.
        filterRegistrationBean.addInitParameter("exclusions", "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
        return filterRegistrationBean;
    }
}

config/MybatisConfig

package com.mrcoder.webservice.config;
import com.mrcoder.webservice.config.wrapper.MapWrapperFactory;
import org.mybatis.spring.boot.autoconfigure.ConfigurationCustomizer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
/**
 * mybatis配置类,将自定义的MapWrapperFactory覆盖默认的ObjectWrapperFactory
 */
@Configuration
public class MybatisConfig {
    private Logger logger = LoggerFactory.getLogger(MybatisConfig.class);
    @Bean
    public ConfigurationCustomizer mybatisConfigurationCustomizer() {
        logger.info("initialize the ConfigurationCustomizer....");
        return new ConfigurationCustomizer() {
            @Override
            public void customize(org.apache.ibatis.session.Configuration configuration) {
                configuration.setObjectWrapperFactory(new MapWrapperFactory());
            }
        };
    }
}

config/RedisConfig

package com.mrcoder.webservice.config;
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.mrcoder.mrutils.redis.RedisUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.*;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
/**
 * @redis 配置类
 */
@Configuration
public class RedisConfig {
    private Logger logger = LoggerFactory.getLogger(RedisConfig.class);
    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
        RedisTemplate<String, Object> template = new RedisTemplate<>();
        // 配置连接工厂
        template.setConnectionFactory(factory);

        //使用Jackson2JsonRedisSerializer来序列化和反序列化redis的value值（默认使用JDK的序列化方式）
        Jackson2JsonRedisSerializer jacksonSeial = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper om = new ObjectMapper();
        // 指定要序列化的域，field,get和set,以及修饰符范围，ANY是都有包括private和public
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        // 指定序列化输入的类型，类必须是非final修饰的，final修饰的类，比如String,Integer等会跑出异常
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jacksonSeial.setObjectMapper(om);
        // 值采用json序列化
        template.setValueSerializer(jacksonSeial);
        //使用StringRedisSerializer来序列化和反序列化redis的key值
        template.setKeySerializer(new StringRedisSerializer());
        // 设置hash key 和value序列化模式
        template.setHashKeySerializer(new StringRedisSerializer());
        template.setHashValueSerializer(jacksonSeial);
        template.afterPropertiesSet();
        return template;
    }
    /**
     * 对hash类型的数据操作
     *
     * @param redisTemplate
     * @return
     */
    @Bean
    public HashOperations<String, String, Object> hashOperations(RedisTemplate<String, Object> redisTemplate) {
        return redisTemplate.opsForHash();
    }
    /**
     * 对redis字符串类型数据操作
     *
     * @param redisTemplate
     * @return
     */
    @Bean
    public ValueOperations<String, Object> valueOperations(RedisTemplate<String, Object> redisTemplate) {
        return redisTemplate.opsForValue();
    }
    /**
     * 对链表类型的数据操作
     *
     * @param redisTemplate
     * @return
     */
    @Bean
    public ListOperations<String, Object> listOperations(RedisTemplate<String, Object> redisTemplate) {
        return redisTemplate.opsForList();
    }
    /**
     * 对无序集合类型的数据操作
     *
     * @param redisTemplate
     * @return
     */
    @Bean
    public SetOperations<String, Object> setOperations(RedisTemplate<String, Object> redisTemplate) {
        return redisTemplate.opsForSet();
    }
    /**
     * 对有序集合类型的数据操作
     *
     * @param redisTemplate
     * @return
     */
    @Bean
    public ZSetOperations<String, Object> zSetOperations(RedisTemplate<String, Object> redisTemplate) {
        return redisTemplate.opsForZSet();
    }
    /**
     * 使用上面初始化的RedisTemplate实例来初始化一个RedisUtil对象
     * ps:@Qualifier("redisTemplate") 可以不用加，如果存在RedisTemplate实例，spring会默认注入
     */
    @Bean
    public RedisUtil redisUtil(@Qualifier("redisTemplate") RedisTemplate redisTemplate) {
        RedisUtil redisUtil = new RedisUtil();
        redisUtil.setRedisTemplate(redisTemplate);
        return redisUtil;
    }
}

config/Swagger2Config

package com.mrcoder.webservice.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;
/**
 * @Description: swagger2配置类
 */
@Configuration
@EnableSwagger2
public class Swagger2Config {
    @Bean
    public Docket createRestApi() {
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.mrcoder.webservice.controller"))
                .paths(PathSelectors.any())
                .build();
    }
    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("SPRING-BOOT整合MYBATIS--API说明文档")
                .description("2019-04-26")
                .version("1.0.0")
                .license("署名-MrCoder")
                .build();
    }
}

controller/TestController

package com.mrcoder.webservice.controller;
import com.mrcoder.mrentity.entity.master.Student;
import com.mrcoder.mrservice.RedisService;
import com.mrcoder.mrservice.StudentService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import java.util.List;
@RestController
@Api(value = "Test", description = "Test测试Controller")
public class TestController {
    @Autowired
    private StudentService studentService;
    @Autowired
    private RedisService redisService;
    private Log logger = LogFactory.getLog(getClass());
    @ApiOperation(value = "log测试接口", notes = "测试写level日志")
    @RequestMapping("log")
    public void testAll() {
        logger.info("====info");
        logger.warn("====warn");
        logger.error("====error");
    }
    //列表查询
    @RequestMapping("getStudentList")
    public ResponseEntity<List<Student>> getStudentList() {
        return ResponseEntity.ok(studentService.getList());
    }
    //列表查询
    @RequestMapping("getStudentListByAnno")
    public ResponseEntity<List<Student>> getStudentListByAnno() {
        return ResponseEntity.ok(studentService.getListByAnno());
    }
    //新增
    @RequestMapping("addStudent")
    public int addStudent() {
        Student student = new Student();
        student.setAge(1);
        student.setGrade(1);
        student.setName("student");
        return studentService.save(student);
    }
    //更新
    @RequestMapping("updateStudent/{id}")
    public int updateStudent(@PathVariable(name = "id") Long id) {
        Student student = new Student();
        student.setAge(10);
        student.setGrade(10);
        student.setName("update");
        student.setId(id);
        return studentService.update(student);
    }
    //删除
    @RequestMapping("deleteStudent/{id}")
    public int deleteStudent(@PathVariable(name = "id") Long id) {
        return studentService.delete(id);
    }
    //事务
    @RequestMapping("transSuccess")
    public void transSuccess() {
        //人为制造0除异常测试事务分布式事务回滚
        studentService.trans(1);
    }
    //事务
    @RequestMapping("transRoll")
    public void transRoll() {
        //人为制造0除异常测试事务分布式事务回滚
        studentService.trans(0);
    }
    //redis string读写
    @RequestMapping(value = "/redis")
    public String redis() {
        redisService.setValue("test", "test123");
        return redisService.getValue("test").toString();
    }
}

WebServiceApplication

package com.mrcoder.webservice;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;
@SpringBootApplication
@ComponentScan(basePackages = {"com.mrcoder"})
public class WebServiceApplication {
    public static void main(String[] args) {
        SpringApplication.run(WebServiceApplication.class, args);
    }
}

注意

@ComponentScan(basePackages = {"com.mrcoder"})

这个注解是用来扫描com.mrcoder下的所有类的。

核心配置,主要的数据源配置都在此
resources/application.yml

## 公共配置start
## 配置数据源相关信息
spring:
  ## 环境配置
  profiles:
    active: dev
  ## 数据源设置
  datasource:
    type: com.alibaba.druid.pool.xa.DruidXADataSource
    druid:
      ## 连接池配置
      master:
        ## JDBC配置
        name: master
        url: jdbc:mysql://192.168.145.131:3306/test?useUnicode=true&characterEncoding=UTF-8&useSSL=false&autoReconnect=true&failOverReadOnly=false&serverTimezone=GMT%2B8
        username: root
        password: 123456
        driver-class-name: com.mysql.cj.jdbc.Driver
        filters: stat
        maxActive: 20
        initialSize: 1
        maxWait: 60000
        minIdle: 1
        timeBetweenEvictionRunsMillis: 60000
        minEvictableIdleTimeMillis: 300000
        validationQuery: select 'x'
        testWhileIdle: true
        testOnBorrow: true
        testOnReturn: true
        poolPreparedStatements: true
        maxOpenPreparedStatements: 20
      slave:
        ## JDBC配置
        name: slave
        url: jdbc:mysql://192.168.145.131:3306/test2?useUnicode=true&characterEncoding=UTF-8&useSSL=false&autoReconnect=true&failOverReadOnly=false&serverTimezone=GMT%2B8
        username: root
        password: 123456
        driver-class-name: com.mysql.cj.jdbc.Driver
        filters: stat
        maxActive: 20
        initialSize: 1
        maxWait: 60000
        minIdle: 1
        timeBetweenEvictionRunsMillis: 60000
        minEvictableIdleTimeMillis: 300000
        validationQuery: select 'x'
        testWhileIdle: true
        testOnBorrow: true
        testOnReturn: true
        poolPreparedStatements: true
        maxOpenPreparedStatements: 20

  redis:
    host: 127.0.0.1  # redis服务所在的地址
    port: 6379
    password:   # redis的密码默认为空
    pool:
      max-active: 8  #连接池最大连接数（使用负值表示没有限制）
      max-idle: 8  #连接池最大空闲数
      min-idle: 1  #连接池最小空闲数
      max-wait: 60000  #获取连接的超时等待事件
    timeout: 30000  #连接redis服务器的最大等待时间

  #druid监控页面用户名和密码
  druid:
    name: admin
    pass: admin


## 该配置节点为独立的节点
mybatis:
  mapper-locations: classpath:mapper/*/*.xml  # 注意：一定要对应mapper映射xml文件的所在路径
  type-aliases-package: com.mrcoder.mrentity.entity # 注意：对应实体类的路径
  configuration:
    map-underscore-to-camel-case: true

## 公共配置 end


---
## 开发环境配置
spring:
  profiles: dev
server:
  port: 8080

---
## 测试环境配置
spring:
  profiles: test
server:
  port: 8082

---
## 生产环境配置
spring:
  profiles: prod
server:
  port: 8084

这边细心的盆友发现了

17.png

这边是为了区分多个环境的配置，实际项目开发时，都会区分开发/联调/测试/生产等环境，yml配置文件本身支持多环境的区分，用“---”隔开来不同环境。

公用的配置写在最上方即可，需要采用的配置用"active"关键词声明即可。

18.png

atomikos分布式事务管理器配置
resources/jta.properties

com.atomikos.icatch.service=com.atomikos.icatch.standalone.UserTransactionServiceFactory
com.atomikos.icatch.max_timeout=600000
com.atomikos.icatch.default_jta_timeout=600000
com.atomikos.icatch.log_base_dir =transaction-logs
com.atomikos.icatch.log_base_name=springboot-mybatis
com.atomikos.icatch.serial_jta_transactions=false

日志配置
resources/logback-spring.xml

<configuration debug="false" scan="true" scanPeriod="10 seconds">
    <contextName>logback</contextName>
    <!--输出sql语句-->
    <logger name="com.mrcoder.webservice" level="debug"/>
    <property name="path" value="/logs"></property>
    <property name="maxHistory" value="30"/>
    <property name="maxFileSize" value="50MB"/>
    <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>debug</level>
        </filter>
        <encoder>
            <pattern>%date %level [%thread] %logger{36} [%file : %line] %msg%n
            </pattern>
        </encoder>
    </appender>
    <appender name="debug_file" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>logs/logback_debug.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!-- 每天一归档 -->
            <fileNamePattern>${path}/logback_debug.log.%d{yyyy-MM-dd}-%i.zip</fileNamePattern>
            <maxHistory>${maxHistory}</maxHistory>
            <timeBasedFileNamingAndTriggeringPolicy
                    class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>${maxFileSize}</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
        </rollingPolicy>
        <encoder>
            <pattern>%date %level [%thread] %logger{36} [%file : %line] %msg%n
            </pattern>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>DEBUG</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
    </appender>
    <appender name="info_file" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>logs/logback_info.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!-- 每天一归档 -->
            <fileNamePattern>${path}/logback_info.log.%d{yyyy-MM-dd}-%i.zip</fileNamePattern>
            <maxHistory>${maxHistory}</maxHistory>
            <timeBasedFileNamingAndTriggeringPolicy
                    class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>${maxFileSize}</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
        </rollingPolicy>
        <encoder>
            <pattern>%date %level [%thread] %logger{36} [%file : %line] %msg%n
            </pattern>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>INFO</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
    </appender>
    <appender name="warn_file" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>logs/logback_warn.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!-- 每天一归档 -->
            <fileNamePattern>${path}/logback_warn.log.%d{yyyy-MM-dd}-%i.zip</fileNamePattern>
            <maxHistory>${maxHistory}</maxHistory>
            <timeBasedFileNamingAndTriggeringPolicy
                    class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>${maxFileSize}</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
        </rollingPolicy>
        <encoder>
            <pattern>%date %level [%thread] %logger{36} [%file : %line] %msg%n
            </pattern>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>WARN</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
    </appender>
    <appender name="error_file" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>logs/logback_error.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!-- 每天一归档 -->
            <fileNamePattern>${path}/logback_error.log.%d{yyyy-MM-dd}-%i.zip</fileNamePattern>
            <maxHistory>${maxHistory}</maxHistory>
            <timeBasedFileNamingAndTriggeringPolicy
                    class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>${maxFileSize}</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
        </rollingPolicy>
        <encoder>
            <pattern>%date %level [%thread] %logger{36} [%file : %line] %msg%n
            </pattern>
        </encoder>
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>ERROR</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
    </appender>
    <root>
        <level value="info"/>
        <appender-ref ref="console"/>
        <appender-ref ref="debug_file"/>
        <appender-ref ref="info_file"/>
        <appender-ref ref="warn_file"/>
        <appender-ref ref="error_file"/>
    </root>
</configuration>

至此，所有的代码均已完善，大家已经可以运行

19.png

运行

http://localhost:8080/log
http://localhost:8080/getStudentList
http://localhost:8080/getStudentListByAnno
http://localhost:8080/addStudent
http://localhost:8080/updateStudent/1
http://localhost:8080/deleteStudent/1
http://localhost:8080/transSuccess
http://localhost:8080/transRoll
http://localhost:8080/redis

关于druid和swagger2的使用

druid监控 （具体使用请查看官方文档）
http://localhost:8080/druid 账号和密码在application.yml有配置

20.png

swagger2 api文档 （具体使用请查看官方文档）
http://localhost:8080/swagger-ui.html
关于swagger2 api文档的自动生成，我们只是简单的测试了一下

21.png

关于mybatis 代码自动生成

这个其实在前几章，作者已经介绍过了，但是这边再讲一下。
我们看mr-entity子模块的pom.xml文件，可以看到注释的build信息，只需放开注释，我们假设在你的master数据源（也就是test库）中有张person表，你想自动生成entity和mapper文件，只需修改resources/generator/masterGenerator.xml

22.png

然后点击IDEA右侧

23.png

关于打包的介绍

关于打包的几个pom.xml build块配置
先看父模块pom.xml中的

24.png

这个是跑测试用例JUnit的配置

再看web-service子模块的pom.xml配置

25.png

重要的掉已经在截图中标红了，大家可以重点看下~

最后，我们再看mr-entity子模块pom.xml中的build信息

26.png

可以看到，这边是注释的，为啥注释呢？因为像mr-entity，mr-service，mr-utils等模块无需打包，我们最终需要打包的只有真正的应用web-service模块。也就是说只有需要打包的模块才能有build配置信息。

最后，打包命令我们只需在IDEA右侧点击

27.png

注意，作者打包时操作的是root项目，也就是父项目。操作父项目执行的操作会对所有的子模块执行，若同学们只想打包某个子项目只需对对应的子模块下执行操作即可~
强调一下重点，先clean，再package！

执行完成后，我们看IDEA的console口出现

28.png

此时，我们发现，各个模块下都会出现一个target文件夹，且里面会有对应的jar包，我们找到web-service服务模块的jar包（为什么找这个，因为只有它才是真正提供服务的模块，才有入口启动类，通俗点，只有它能运行，不懂的可以再回头看看文章。）
我们再cmd下执行 jar -jar xxxx.jar包 即可运行该服务！linux下同理！注意，必须按照JDK环境，这里就不讲如何安装配置JDK了。

总结

好了，至此，一个可生产的springboot项目结构已经搭建完毕，该结构可以直接拿去投产，从结构的构思到demo的编写，作者花了几天的时间，还请用的上的同学关注下作者的公众号，同时对github点个赞~

项目地址

https://github.com/MrCoderStack/SpringBootFrame

请关注我的订阅号

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