springmvc01

1，环境搭建：

将 \spring-framework-3.1.1.RELEASE-with-docs\spring-framework-3.1.1.RELEASE\dist 下的所有jar导入，再导入commons-logging-1.1.3.jar 导入即可

2，整体架构

3，第一个springmvc程序

1） web.xml

<?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>springmvc</display-name>

    <!-- 1,配置springmvc -->
    <servlet>
        <!-- 这个servlet的name值是hello，必须有一个对应的hello-servlet.xml文件在WEB-INF下  -->
        <servlet-name>hello</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <!--  这个url一定要是 / -->
        <servlet-name>hello</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    
    
</web-app>

2） /WEB-INF/hello-servlet.xml

<?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:mvc="http://www.springframework.org/schema/mvc"
    xmlns:context="http://www.springframework.org/schema/context"
   
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans 
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context-3.0.xsd">

    <!--  使用annotation配置控制器 -->
    <context:component-scan base-package="com.yangw.springmvc.controller" />
    <mvc:annotation-driven/>
    
    
    <!-- 完成视图的对应 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="WEB-INF/jsp/" />
        <property name="suffix" value=".jsp" />
    </bean>
</beans>

3）WelcomeController类

package com.yangw.springmvc.controller;

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

@Controller
public class WelcomeController{

    //@RequestMapping表示 用哪个url对应
    @RequestMapping(value={"/","/welcome"})
    public String welcome(){
        System.out.println("welcome");
        return "welcome"; //返回的逻辑视图
    }

}

4） WEB-INF/jsp/welcome.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>
  welcome jsp
</body>
</html>

4，请求传递参数给controller

package com.yangw.springmvc.controller;

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

@Controller
public class WelcomeController{

    //@RequestMapping表示 用哪个url对应
    @RequestMapping(value={"/","/welcome"})
    
    //请求传递过来的值如果一定存在，即必不可少的话，使用@RequestParam(value="paramname")
    //如果参数有可能存在，有可能不存在，就不需要注解，直接使用参数
    public String welcome(@RequestParam(value="hello") String hello,String world){
        System.out.println(hello);
        System.out.println(world);
        System.out.println("welcome");
        return "welcome"; //返回的逻辑视图
    }

}

　　下面三种传递参数的情形，对应不同的结果

5， controller传递参数给view

package com.yangw.springmvc.controller;

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

@Controller
public class WelcomeController{

    //springmvc使用Model来view传值，也可以使用Map替代Model
    @RequestMapping(value="/hello")
    public String hello(Model model){
        
        model.addAttribute("hello", "hehe");
        //也可以使用model.addAttribute(Object obj);,此时对象的key默认就是对象类型
        //这种简化的情形适合 自定义类型，比如一个User对象
        model.addAttribute("nihao");
        return "welcome"; //返回的逻辑视图
    }

}

　　WEB-INF/jsp/welcome.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>
 <h3>welcome to springmvc</h3><br/>

 <!--  在界面上使用${key}获取controller传递过来的值 -->
 <h3>${hello } --获取的是model.addAttribute("hello", "hehe");设置的值</h3><br/>
 <h3>${string } --获取的是model.addAttribute("nihao");设置的值</h3>
</body>
</html>

posted on 2013-11-19 00:03 梦相随1006 阅读(278) 评论(0) 编辑收藏举报

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springmvc01