REST是英文representational state transfer(表象性状态转变)或者表述性状态转移;Rest是web服务的一种架构风格;使用HTTP,URI,XML,JSON,HTML等广泛流行的标准和协议;轻量级,跨平台,跨语言的架构设计;它是一种设计风格,不是一种标准,是一种思想。
关于这个项目实例：
导入springmvc的框架jar等，保持版本号保持一致。（3.xxx对应的是jdk1.7,4.xxx对应的是jdk1.8）
web.xml配置前置控制器和过滤器。过滤器是为了将普通浏览器的post请求转成delete和put。
<?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">
<display-name>springMVC001</display-name>
<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:springmvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<!--为了解决一些浏览器不支持设置put和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>*.do</url-pattern>
</filter-mapping>
</web-app>springmvc.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: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.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
">
<!--设置扫描包 -->
<context:component-scan base-package="controller"/>
<!--开启注解 -->
<mvc:annotation-driven/>
</beans>在这个hello1.jsp页面进行请求
<%@ 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>
四种表现方式
<form action="rest/abdc.do" method="post">
<input type="submit" value="增加">
</form>
<form action="rest/abdc.do" method="post">
<input type="hidden" name="_method" value="DELETE">
<input type="submit" value="删除">
</form>
<form action="rest/abdc.do" method="post">
<input type="hidden" name="_method" value="PUT">
<input type="submit" value="修改">
</form>
<form action="rest/abdc.do" method="get">
<input type="submit" value="查看">
</form>
</body>
</html>请求处理类
@Controller
public class Restful {
@RequestMapping(value="/rest/{name}.do",method=RequestMethod.POST)
public String restinsert(@PathVariable("name") String name){
System.out.println("增加"+name);
return "/hello.jsp";
}
@RequestMapping(value="/rest/{name}.do",method=RequestMethod.DELETE)
public String restdelete(@PathVariable("name") String name){
System.out.println("删除"+name);
return "/hello.jsp";
}
@RequestMapping(value="/rest/{name}.do",method=RequestMethod.PUT)
public String restupdate(@PathVariable("name") String name){
System.out.println("更新"+name);
return "/hello.jsp";
}
@RequestMapping(value="/rest/{name}.do",method=RequestMethod.GET)
public String restselect(@PathVariable("name") String name){
System.out.println("查看"+name);
return "/hello.jsp";
}
}
处理请求后会跳转到hello.jsp中，但是会报错！！！
错误是这样的：JSPs only permit GET POST or HEAD
三种简单处理的办法！
1.tomcat换到7.0以及以下版本
2.请求先转给一个Controller,再返回jsp页面
3.在你的success页面头部文件将
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8" isErrorPage="true"%>
本人所使用的就是第三种就可以成功跳转了。
附上成功跳转页hello.jsp的代码
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8" isErrorPage="true"%>
<!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>
hello
${name}
</body>
</html>