标签：结果 component 技术分享 location 否则 xml文件 map htm get
REST架构是一个抽象的概念，目前主要是基于HTTP协议实现，其目的是为了提高系统的可伸缩性、降低应用之间的耦合度、便于架构分布式处理程序。
在URL中设置使用如下方式: /{变量名1}/{变量名2}
在代码中向Controller方法注入参数: (@PathVariable("变量名1") String str1,@PathVariable("变量名2") String str2)
例如：
@RequestMapping(value="/book/{bookid}",method=RequestMethod.POST)
@ResponseBody
public Object getBook(@PathVariable("bookid") String bookid){
return new Book();
}
下面是一个使用案例：
bean类：
package cn.xdl.bean; public class Book { private int bid; private String bname; public int getBid() { return bid; } public void setBid(int bid) { this.bid = bid; } public String getBname() { return bname; } public void setBname(String bname) { this.bname = bname; } public Book(int bid, String bname) { super(); this.bid = bid; this.bname = bname; } public Book() { super(); // TODO Auto-generated constructor stub } @Override public String toString() { return "Book [bid=" + bid + ", bname=" + bname + "]"; } }
Controller类
BookController.java这里的通信方式返回的结果是Object对象。
bean.xml文件
<?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:jdbc="http://www.springframework.org/schema/jdbc" xmlns:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:util="http://www.springframework.org/schema/util" xmlns:jpa="http://www.springframework.org/schema/data/jpa" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-4.1.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.1.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.1.xsd http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd 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/util http://www.springframework.org/schema/util/spring-util-4.1.xsd"> <!-- 开启注解扫描 --> <context:component-scan base-package="cn"></context:component-scan> <!-- 开启mvc注解扫描 --> <mvc:annotation-driven/> <mvc:default-servlet-handler/> </beans>
在配置文件中一定需要指出：
<mvc:default-servlet-handler/>
否则会出现静态资源（如js、css等资源）拦截404的错误。
web.xml文件
<?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" version="3.0">
<servlet>
<servlet-name>webmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:bean.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>webmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
web.xml文件过滤的url必须写成 <url-pattern>/</url-pattern> ,因为采用REST编程风格，在url地址中只会出现/分割符号，所以只能写成这样 <url-pattern>/</url-pattern> ，以匹配所有的路径。
restTest.jsp文件
<%@ 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> <script type="text/javascript" src="js/jquery.js"></script> <script type="text/javascript"> function insertClick(){ $.ajax({ url:"book/10003/hahaha", dataType:"JSON", type:"POST", success:function(data){ alert( JSON.stringify(data)); }, error:function(){ } }); } function deleteClick(){ $.ajax({ url:"book/10003", dataType:"JSON", type:"DELETE", success:function(data){ alert( JSON.stringify(data)); }, error:function(){ } }); } function updateClick(){ $.ajax({ url:"book/10003/hahaha", dataType:"JSON", type:"PUT", success:function(data){ alert( JSON.stringify(data)); }, error:function(){ } }); } function findClick(){ $.ajax({ url:"book/10003", dataType:"JSON", type:"GET", success:function(data){ alert( JSON.stringify(data)); }, error:function(){ } }); } </script> </head> <body> <input onclick="insertClick()" type="button" value="增加"/><br><br> <input onclick="deleteClick()" type="button" value="删除"/><br><br> <input onclick="updateClick()" type="button" value="修改"/><br><br> <input onclick="findClick()" type="button" value="查询"/><br><br> </body> </html>
这里通信方式是采用Ajax请求。
标签：结果 component 技术分享 location 否则 xml文件 map htm get
原文地址：http://www.cnblogs.com/HDK2016/p/7197696.html
