SpringMVC rest风格的url
无多余后缀，没有？！=那些乱七八糟的东西。
但是rest风格也是有很多不好控制的东西，所以大部分的网站还是再用传统方式，稍好一点的会采用.html或.htm为后缀
知识点：
1.SpringMVC——对rest风格的支持
2.@PathVariable获取url变量
3.SpringMVC对静态资源的处理
示例（模拟文章的点击查看）
实体类：
package com.maya.model; public class Article { private int id; private String title; private String content; public Article() { super(); // TODO Auto-generated constructor stub } public Article(String title, String content) { super(); this.title = title; this.content = content; } public int getId() { return id; } public void setId(int id) { this.id = id; } public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } public String getContent() { return content; } public void setContent(String content) { this.content = content; } }
控制层
package com.maya.controller; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView; import com.maya.model.Article; @Controller @RequestMapping("article") public class ArticleController { @RequestMapping("/list") public String list(Model model){ return "list"; } @RequestMapping("/details/{id}")//请求的参数，可以跟多个所以用集合的方式 public ModelAndView details(@PathVariable("id") int id){//@PathVariable获取url的变量 ModelAndView mav=new ModelAndView(); if(id==1){ mav.addObject("article", new Article("文章一","文章一的内容")); }else if(id==2){ mav.addObject("article", new Article("文章二","文章二的内容")); } mav.setViewName("details");//设置返回的视图名 return mav; } }
list.jsp
<body> <table> <tr> <th colspan="2"> <img alt="文章列表" src="${pageContext.request.contextPath}/resources/article_list.jpg"> </th> <!-- 以resources就被被映射到images路径下 --> </tr> <tr> <td>1</td> <td> <a href="${pageContext.request.contextPath}/article/details/1" target="_blank">文章一</a> </td> <!-- /article/details/1 : 带的参数id --> </tr> <tr> <td>2</td> <td> <a href="${pageContext.request.contextPath}/article/details/2" target="_blank">文章二</a> </td> </tr> </table> </body>
details.jsp
<link href="${pageContext.request.contextPath }/resources2/css.css" rel="stylesheet" type="text/css"/> </head> <body> <h1>${article.title }</h1> ${article.content } </body>
spring-mvc.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/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.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!-- 使用注解的包，包括子集 --> <context:component-scan base-package="com.maya"/> <!-- 注解驱动 --> <mvc:annotation-driven></mvc:annotation-driven> <!-- 这样所有以resources开头的都会被映射到images路径下 --> <mvc:resources mapping="/resources/**" location="/images/"/> <!-- 多个路径时可以这样区分开写 --> <mvc:resources mapping="/resources2/**" location="/css/"/> <!-- 视图解析器 --> <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/article/" /><!-- 返回视图到这个目录下 --> <property name="suffix" value=".jsp"></property> </bean> </beans>
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" 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>SpringMVC3</display-name> <welcome-file-list> <welcome-file>index.html</welcome-file> </welcome-file-list> <!-- 同struts一样，也是需要拦截请求 --> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring-mvc.xml</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>/</url-pattern><!-- 既然是rest风格的就不能只拦截后缀是.do的请求了，直接/，拦截所有请求才可以 --> </servlet-mapping> </web-app>
