SpringMVC学习笔记(四):地址映射RequestMapping

事例:查询,增加,更新

控制器:

package com.lin.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;

/**
 * 控制器
 * user/list.do
 * user/add.do
 * user/update.do
 * @author h
 */
@Controller
@RequestMapping("/user")//请求地址一级映射,功能模块
public class UserController {

    @RequestMapping(value="/list",method=RequestMethod.GET)//请求地址二级映射并指定请求的参数为GET方式,如果不填表示两种请求方式都可以接收到
    public ModelAndView list(){
        System.out.println("--list users--");

        ModelAndView mav = new ModelAndView("user_list");//视图modelAndView关联user_list.jsp
        mav.addObject("user_list", "list users");//向关联的界面传递一个user_list数据
        return mav;//跳转界面
    }
    @RequestMapping("/add")//请求地址二级映射
    public ModelAndView add(){
        System.out.println("--add users--");

        ModelAndView mav = new ModelAndView("user_add");
        mav.addObject("user_add", "add users");
        return mav;
    }
    @RequestMapping("/update")//请求地址二级映射
    public ModelAndView update(){
        System.out.println("--update users--");

        ModelAndView mav = new ModelAndView("user_update");
        mav.addObject("user_update", "update users");
        return mav;
    }
}

jsp界面

//index.jsp
  <body>
      
    <a href="user/list.do">查询a>br>
    <a href="user/add.do">添加get方式a>br>
     <form action="user/add.do" method="post"><input type="submit" value="添加POST方式"/>form>br>
    <a href="user/update.do">更新a>

  body>

//user_list.jsp
<body>
   <h1>${user_list }h1>
  body>

//user_add.jsp
<body>
   <h1>${user_add }h1>
  body>
//user_update.jsp
<body>
   <h1>${user_update }h1>
  body>

springmvc-servlet.xml


<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:p="http://www.springframework.org/schema/p"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.1.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd">

    
    <mvc:annotation-driven/>
    
    <context:component-scan base-package="com">context:component-scan>

    
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        
        <property name="prefix" value="/userInfo/">property>
        <property name="suffix" value=".jsp">property>
    bean>


beans>

web.xml


<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">
  <display-name>SpringMVC04display-name>
  <welcome-file-list>
    <welcome-file>index.jspwelcome-file>
  welcome-file-list>
  <servlet>
    <servlet-name>springmvcservlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
  servlet>
  <servlet-mapping>
    <servlet-name>springmvcservlet-name>
    <url-pattern>*.dourl-pattern>
  servlet-mapping>
  <filter>
    <filter-name>encodeFilterfilter-name>
    <filter-class>com.lin.controller.EncodeFilterfilter-class>
  filter>
  <filter-mapping>
    <filter-name>encodeFilterfilter-name>
    <url-pattern>/*url-pattern>
  filter-mapping>
web-app>

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