SpringMVC配置2-CFANZ编程社区

优化SpringMVC配置1的配置文件路径问题，以及访问controller的路径问题

1.引入jar包

SpringMVC配置2_mvc

2.配置web.xml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">
  <!-- SpringMVC 前端控制器,入口 -->
  <servlet>
    <servlet-name>springmvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <!-- 设置  springmvc.xml 的路径在src下-->
      <param-value>classpath:springmvc.xml</param-value>
    </init-param>
    <!-- 自启动-在启动tomcat时立即加载对应的Servlet -->
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <!-- 只能放行jsp，这个地方很容易出错 不要配成/* ,否则jsp文件无法解析-->
    <url-pattern>/</url-pattern>
  </servlet-mapping>
</web-app>

3.配置springmvc.xml

<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.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">
  <!-- 告诉SpringMVC的注解在哪里 -->
  <context:component-scan base-package="com.sixfly.controller"></context:component-scan>
  <!-- 配置标签让SPringMVC注解生效,创建注解解析器. -->
  <mvc:annotation-driven />
  <!-- 如果碰见请求中/js/xx格式请求,去location配置的/js中去寻找,配置放行静态资源 -->
  <!-- 如果没有配置mvc:resources去寻找@requestmappingg -->
  <mvc:resources location="/js/" mapping="/js/**"></mvc:resources>
  <mvc:resources location="/images/" mapping="/images/**"></mvc:resources>
  <mvc:resources location="/css/" mapping="/css/**"></mvc:resources>
  <mvc:resources location="/" mapping="/**"></mvc:resources>
</beans>

4.测试代码

package com.sixfly.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class SixController {
  @RequestMapping("show")
  public String show(){
    System.out.println("配置方式2 show");
    return "index.jsp";
  }
}

5.jsp页面

<%@ 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>welcome</title>
</head>
<body>
    <img src="images/fun.jpg" />
    <br />
    <font size="20"> sixfly</font>
</body>
</html>

6.输出效果

6.1控制台输出

SpringMVC配置2_spring_02

6.2页面效果

SpringMVC配置2_SpringMVC_03