springMVC的rest风格的url请求

rest是一个架构风格,用url来访问网络上的任何资源。rest的一种思想就是用http中的动作get，post，put，delete，来进行增删改查。

这里介绍的是springMVC的rest请求。不包含webservice的JAX-RS的例子。rest风格的webservice可以用cxf框架进行实现。也很简单。

1 首先准备web项目需要的jar包，也就是springMVC所依赖的jar：

2 创建一个动态的web工程：这里首先需要配置web.xml文件注册springMVC的前端控制器，dispatcherServlet，所有的客户端请求会被他进行转发。然后在配置hiddenHttpMethodFilter用来把post请求转成put 和 delete

<?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">


<!-- hiddenHttpMethodFilter 可以把把post请求转船成put delete -->


<filter>


<filter-name>hiddenHttpMethodFilter</filter-name>


<filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>


</filter>


<filter-mapping>


<filter-name>hiddenHttpMethodFilter</filter-name>


<url-pattern>/*</url-pattern>


</filter-mapping>


<!-- 配置springmvc的dispatcherServlet分发请求，实际上他是一个前端控制器 -->


<servlet>


<servlet-name>dispatcherServlet</servlet-name>


<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>


</servlet>


<servlet-mapping>


<servlet-name>dispatcherServlet</servlet-name>


<url-pattern>/</url-pattern>


</servlet-mapping>


</web-app>

3 编写rest风格的接口

package cn.bean.demo.service;

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.RequestMethod;


@Controller


@RequestMapping(value="/restservice")


public class RestService {


public final static String SUCCEEDD="show";


/


* get请求


* url:  http://localhost:8080/springmvc/restservice/testRestGet/12


* @param id  


*         查询的参数


* @return


*/


@RequestMapping(value="/testRestGet/{id}",method=RequestMethod.GET)


public String testRestGet(@PathVariable("id") Integer id){


System.out.println("rest 风格的GET请求..........id=" +id);


return SUCCEEDD;


}


/


* post新增 


* url:  http://localhost:8080/springmvc/restservice/testRestPost

* @return


/


@RequestMapping(value="/testRestPost",method=RequestMethod.POST)


public String testRestPost(){


System.out.println("rest 风格的POST请求.......... ");


return SUCCEEDD;


}


/**


* PUT 修改操作


* url:  http://localhost:8080/springmvc/restservice/testRestPut/put123


* @param name


* @return


/


@RequestMapping(value="/testRestPut/{name}",method=RequestMethod.PUT)


public String testRestPut(@PathVariable("name") String name){


System.out.println("rest 风格的PUT请求..........name="+name);


return SUCCEEDD;


}


/**


*   DELETE删除操作


*   url: http://localhost:8080/springmvc/restservice/testRestDelete/11


* @param id


* @return


*/


@RequestMapping(value="/testRestDelete/{id}",method=RequestMethod.DELETE)


public String testRestDelete(@PathVariable Integer id){


System.out.println("rest 风格的DELETE请求..........id="+id);


return SUCCEEDD;


}


}

4 编写接口的响应页面 -对应着接口的return

<%@ 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>

   <h2>show  this is succeedd ？  yes  </h2>

</body>

</html>

5 发布和配置rest接口 dispatcherServlet-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: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/context http://www.springframework.org/schema/context/spring-context-4.0.xsd

        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">


<!-- 配置自定扫描的包 -->


<context:component-scan base-package="cn.bean.demo"></context:component-scan>


<!-- 配置视图解析器: 如何把 handler 方法返回值解析为实际的物理视图 -->


<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">


<property name="prefix" value="/WEB-INF/views/"></property>


<property name="suffix" value=".jsp"></property>


</bean>


</beans>

6 测试rest接口: 将项目发布到tomcat7中。测试工具RESTClient

posted @ 2017-12-17 14:21 星朝阅读(858) 评论(0) 收藏举报

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springMVC的rest风格的url请求

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