1.引
前面的章节已经分析了Spring的IOC容器、AOP、事物管理等，今天开始分析SpringMVC的实现。当然需要先搭建一下SpringMVC源码的阅读环境，因为之前的代码分析都是非Web环境的。
2.新建Gradle模块
2.1 右键spring源码根目录，新建模块，弹出窗口选择Gradle --> 同时勾选java和web
在这里插入图片描述
2.2 选择根目录并输入ArtifactId，点击确定
在这里插入图片描述
2.3 完善项目结构
- 通过前两步的操作，得到一个空的web项目，接下来就要将其完善。打开build.gradle配置文件，并配置：
plugins {
id 'java'
id 'war'
}
group 'org.springframework'
version '5.1.0.RC1'
sourceCompatibility = 1.8
repositories {
mavenCentral()
}
dependencies {
compile(project(":spring-beans"))
compile(project(":spring-core"))
optional(project(":spring-aop"))
optional(project(":spring-context"))
optional(project(":spring-oxm"))
optional(project(":spring-jdbc"))
optional(project(":spring-web"))
optional(project(":spring-webmvc"))
optional(project(":spring-test"))
optional group: 'javax.servlet', name: 'javax.servlet-api', version: '3.1.0'
optional group: 'asm', name: 'asm', version: '3.3.1'
optional group: 'junit', name: 'junit', version: '4.12'
optional group: 'cglib', name: 'cglib', version: '2.2.2'
optional group: 'org.jsoup', name: 'jsoup', version: '1.11.3'
optional group: 'commons-dbcp', name: 'commons-dbcp', version: '1.4'
optional group: 'mysql', name: 'mysql-connector-java', version: '5.1.38'
optional("javax.annotation:javax.annotation-api:1.3.2")
optional("javax.ejb:javax.ejb-api:3.2")
optional("javax.enterprise.concurrent:javax.enterprise.concurrent-api:1.0")
optional("javax.inject:javax.inject:1")
optional("javax.interceptor:javax.interceptor-api:1.2.2")
optional("javax.money:money-api:1.0.3")
optional("javax.validation:validation-api:1.1.0.Final")
optional("javax.xml.ws:jaxws-api:2.3.0")
optional("org.aspectj:aspectjweaver:${aspectjVersion}")
optional("org.codehaus.groovy:groovy:${groovyVersion}")
optional("org.beanshell:bsh:2.0b5")
optional("joda-time:joda-time:2.10")
optional("org.hibernate:hibernate-validator:5.4.2.Final")
optional("org.jetbrains.kotlin:kotlin-reflect:${kotlinVersion}")
optional("org.jetbrains.kotlin:kotlin-stdlib:${kotlinVersion}")
testCompile("org.codehaus.groovy:groovy-xml:${groovyVersion}")
testCompile("org.codehaus.groovy:groovy-jsr223:${groovyVersion}")
testCompile("org.codehaus.groovy:groovy-test:${groovyVersion}")
testCompile("org.apache.commons:commons-pool2:2.6.0")
testCompile("javax.inject:javax.inject-tck:1")
testRuntime("javax.xml.bind:jaxb-api:2.3.0")
testRuntime("org.glassfish:javax.el:3.0.1-b08")
testRuntime("org.javamoney:moneta:1.3")
}
- 在resources资源文件下添加log4j.properties和spring-context.xml配置文件
# Output pattern : date [thread] priority category - message FATAL 0 ERROR 3 WARN 4 INFO 6 DEBUG 7
log4j.rootLogger=INFO, Console, RollingFile
#Console
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.layout=org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=%d %-5p [%c{5}] - %m%n
#RollingFile
log4j.appender.RollingFile=org.apache.log4j.DailyRollingFileAppender
log4j.appender.RollingFile.File=mylog.log
log4j.appender.RollingFile.layout=org.apache.log4j.PatternLayout
log4j.appender.RollingFile.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n
#log4j.logger.java.sql=DEBUG
#Springframework level
#log4j.logger.org.springframework=ERROR
#Hibernate level
#log4j.logger.org.hibernate=ERROR
#log4j.logger.org.hibernate.cache.ehcache.AbstractEhcacheRegionFactory=ERROR
#log4j.logger.org.hibernate.search.impl.ConfigContext=ERROR
#log4j.logger.net.sf.ehcache.config.CacheConfiguration=ERROR
#Project defalult level
#log4j.logger.org.activiti.engine.impl.persistence=DEBUG
#log4j.logger.org.apache.shiro=DEBUG
log4j.logger.com.thinkgem.jeesite=DEBUG
log4j.logger.com.thinkgem.jeesite.common.security.shiro=WARN
log4j.logger.com.thinkgem.jeesite.common.utils.JedisUtils=WARN
log4j.logger.com.thinkgem.jeesite.modules.sys.web.LoginController=WARN
log4j.logger.com.thinkgem.jeesite.modules.oa.dao.OaNotifyDao.findCount=WARN
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.0.xsd"
default-lazy-init="true">
<!-- 采用注释的方式配置bean -->
<context:annotation-config />
<!-- proxy-target-class默认"false",更改为"ture"使用CGLib动态代理 -->
<aop:aspectj-autoproxy/>
<!-- 开启自动扫包 -->
<context:component-scan base-package="com.lyc.cn">
<!--制定扫包规则，不扫描@Controller注解的JAVA类，其他的还是要扫描 -->
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
</context:component-scan>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/pages/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
</beans>
- 在WEB-INF下添加web.xml和example-servlet.xml配置文件
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<!-- 项目名 -->
<display-name>example</display-name>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>example</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>example</servlet-name>
<url-pattern>/example/</url-pattern>
</servlet-mapping>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-context.xml</param-value>
</context-param>
<filter>
<filter-name>characterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>characterEncodingFilter</filter-name>
<url-pattern>/</url-pattern>
</filter-mapping>
</web-app>
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
<!-- 开启注解模式驱动 -->
<!-- springmvc中配置这个标签默认注册三个bean：RequestMappingHandlerMapping，RequestMappingHandlerAdapter，DefaultHandlerExceptionResolver -->
<mvc:annotation-driven />
<!-- 扫包 -->
<context:component-scan base-package="com.lyc.cn"></context:component-scan>
<!-- 视图渲染 jsp/freemaker/velocity -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- 制定页面存放的路径 -->
<property name="prefix" value="/WEB-INF/pages/"></property>
<!-- 文件的后缀 -->
<property name="suffix" value=".jsp"></property>
</bean>
</beans>
- 在WEB-INF下新建pages文件夹并添加sayHello.jsp
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</head>
<body>
sayHello...<br/>
${myBean.name}<br/>
${myBean.age}
</body>
</html>
- 添加TestController和MyBean
package com.lyc.cn.controller;
import com.lyc.cn.vo.MyBean;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;
@Controller
public class TestController {
@RequestMapping("sayHello")
@ResponseBody
public ModelAndView sayHello(int age, String name) {
ModelAndView mav = new ModelAndView();
MyBean bean = new MyBean(age, name);
mav.addObject("myBean", bean);
mav.setViewName("sayHello");
System.out.println(bean.toString());
return mav;
}
}
package com.lyc.cn.vo;
public class MyBean {
private int age;
private String name;
public MyBean(int age, String name) {
this.age = age;
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
3.配置tomcat并运行项目
tomcat配置比较简单，不赘述了。启动项目在地址栏输入：http://localhost:8080/example/sayHello?age=12&name=Jack
