导入 jar 包
基础包
在web配置前端控制器
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id="WebApp_ID" version="3.0">
<!-- 配置前端控制器 -->
<servlet>
<servlet-name>springDispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 指定SpringMVC配置文件 -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springMVC-servlet.xml</param-value>
</init-param>
<!-- 大于0表示，容器启动时自动加载 -->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springDispatcherServlet</servlet-name>
<!-- 处理所有以action结束的请求 -->
<url-pattern>*.action</url-pattern>
</servlet-mapping>
</web-app>
配置处理映射器及处理适配器
在src下创建 springMVC-servlet.xml 文件
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd"
>
<!-- 注册处理映射器 -->
<bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"></bean>
<!-- 注册处理适配器 -->
<bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"></bean>
<!-- 视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"></bean>
<!-- 配置映射 url 与 action 的映射-->
<bean name="/login.action" class="com.project.action.LoginAction"></bean>
</beans>
创建 action 与 jsp
LoginAction.class
package com.project.action;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;
public class LoginAction implements Controller {
@Override
public ModelAndView handleRequest(HttpServletRequest arg0, HttpServletResponse arg1) throws Exception {
String account = arg0.getParameter("account");
// arg0.setAttribute("account", account);
// arg0.getRequestDispatcher("/index.jsp").forward(arg0, arg1);
// 以下操作的结果跟上面等价
ModelAndView model = new ModelAndView();
model.addObject("account", account);
model.setViewName("index.jsp");
return model;
}
}
index.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>
账号：${requestScope.account}
</body>
</html>
另一种适配器
配置
<!-- 注册处理适配器 -->
<bean class="org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter" />
action 需要继承 HttpRequestHandler 接口，操作跟传统servlet一致。
package com.project.action;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.HttpRequestHandler;
public class LoginAction implements HttpRequestHandler {
@Override
public void handleRequest(HttpServletRequest arg0, HttpServletResponse arg1) throws ServletException, IOException {
// 与往常的Servlet操作一致
}
}
