【spring】实现restful

1. 创建一个新的web工程，导入springMVC的jre包。

2. web.xml添加配置

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 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_2_5.xsd">
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
    
    <!--
        以下是Spring MVC配置
    -->
    <context-param>
        <param-name>webAppRootKey</param-name>
        <param-value>springmvc.root</param-value>
    </context-param>
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>WEB-INF/classes/applicationContext.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    
    <!-- -chushihuacanshu- -->
    <servlet>
        <servlet-name>spring-mvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>WEB-INF/classes/springmvc-servlet.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>spring-mvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    <filter>
        <filter-name>encodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
</web-app>

3. 在src目录下添加appactionContext.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:aop="http://www.springframework.org/schema/aop"  
    xmlns:tx="http://www.springframework.org/schema/tx"  
    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/tx   
          http://www.springframework.org/schema/tx/spring-tx-3.0.xsd  
          http://www.springframework.org/schema/context   
          http://www.springframework.org/schema/context/spring-context-3.0.xsd   
          http://www.springframework.org/schema/aop   
          http://www.springframework.org/schema/aop/spring-aop-3.0.xsd" default-autowire="byName">    
</beans>

4. 在src目录下添加springmvc-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:p="http://www.springframework.org/schema/p"  
    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-3.0.xsd   
           http://www.springframework.org/schema/context   
           http://www.springframework.org/schema/context/spring-context-3.0.xsd  
           http://www.springframework.org/schema/mvc   
           http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
    
    <!-- 启动扫描所有的controller -->
    <context:component-scan base-package="com.greeting.api"/>
    
    <!--  主要作用于@Controller，激活该模式        
        下面是一种简写形式，完全可以手动配置替代这种简写形式；
         它会自动注册DefaultAnnotationHandlerMapping与AnnotationMethodHandlerAdapter 两个bean,
           是spring MVC为@Controllers分发请求所必须的
           
    <bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"/>   
    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"/>  
    
     -->
    <mvc:annotation-driven/>
   
    <mvc:view-controller path="/api" view-name="api"/>

    <!-- jsp页面解析器，当Controller返回XXX字符串时，先通过拦截器，然后该类就会在/WEB-INF/views/目录下，查找XXX.jsp文件-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/api-views/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>
    
</beans>

5. src下编写api的java类

package com.greeting.api;

import java.util.Date;

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


@Controller
public class InfoController {
    @RequestMapping(value="/{name}")
    @ResponseBody 
    public String getJson(@PathVariable String name){    
        Date date = new Date();
        String name1= name;
        String result ="hi,"+name1+","+date ;
        
        return result.toString();
    }
}

6. 页面访问http://localhost:8080/greeting/jack，便能获得相应

这是最简单的springMVC了吧~~自己加油