Spring MVC rest

列表页面  /user/users

更新页面  /user/20150128/update

删除页面  /user/20150218/delete

添加页面  /user/add

显示详情  /user/张无忌  

@RequestMapping(value="/{username}",method=RequestMethod.GET)  
 public String show(@PathVariable String username){ 
     return "user/show";
 }

一个相对完整的实例，只提供了现实列表功能 和  修改功能，添加删除基本一样，没做处理

@Controller
@RequestMapping("/user")
public class UserController {

	private DB db;

	@RequestMapping(value = "/add", method = RequestMethod.GET)
	public String add(User user) {
		return "add";
	}

	@RequestMapping(value = "/add", method = RequestMethod.POST)
	public String add(User user, Model model) {
		model.addAttribute("user", user);
		return "/user/users";
	}

	@RequestMapping(value = "/users")
	public String list(Model model) {
		Map<String, User> maps = db.getUserList();
		model.addAttribute("maps", maps);
		return "user/users";
	}

	@RequestMapping(value = "/{id}/update", method = RequestMethod.GET)
	public String update(@PathVariable(value = "id") String id, Model model) {
		User user = db.maps.get(id);
		model.addAttribute(user);
		return "/user/update";
	}

	@RequestMapping(value = "/{id}/update", method = RequestMethod.POST)
	public String update(@PathVariable(value = "id") String id, User user) {
		db.maps.remove(id);
		db.maps.put(id, user);
		return "redirect:/user/users";
	}

}

public class User {

	public User() {
	}

	public User(String id, String name, String password, String email) {
		this.id = id;
		this.name = name;
		this.password = password;
		this.email = email;
	}

	private String id;
	private String name;
	private String password;
	private String email;

	public String getId() {
		return id;
	}

	public void setId(String id) {
		this.id = id;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getPassword() {
		return password;
	}

	public void setPassword(String password) {
		this.password = password;
	}

	public String getEmail() {
		return email;
	}

	public void setEmail(String email) {
		this.email = email;
	}

	@Override
	public String toString() {
		return "User [name=" + name + ", password=" + password + ", email="
				+ email + "]";
	}

}

public class DB {
	public static Map<String, User> maps = new LinkedHashMap<>();
	static {
		maps.put("1", new User("1", "张无忌", "123", "[e-mail]"));
		maps.put("2", new User("2", "周芷若", "123", "[e-mail]"));
		maps.put("3", new User("3", "包大人", "123", "[e-mail]"));
		maps.put("4", new User("4", "吕布", "123", "[e-mail]"));
	}

	public static Map<String, User> getUserList() {
		return maps;
	}

	public static User getUserById(String id) {
		return maps.get(id);
	}

	public static void addUser(User user) {
		maps.put(String.valueOf(maps.size() + 1), user);
	}

	public static void removeUser(String id) {
		maps.remove(id);
	}

	public static void updateUser(User user) {
		if (maps.containsKey(user.getId())) {
			maps.remove(user.getId());
			maps.put(user.getId(), user);
		}
	}
}

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" xmlns:web="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">

<!-- 加载顺序 context param  listener filter servlet -->
	<filter>
		<filter-name>CharacterEncodingFilter</filter-name>
		<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
		<init-param>
			<param-name>encoding</param-name>
			<param-value>UTF-8</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>CharacterEncodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>

	<servlet>
		<servlet-name>mvc</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
	</servlet>
	<servlet-mapping>
		<servlet-name>mvc</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>

</web-app>	

mvc-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/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
		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">

	<mvc:annotation-driven />
	<context:component-scan base-package="com.cnpc.rest.*" />

	<mvc:resources location="/resources/" mapping="/resources/**" />

	<bean
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/WEB-INF/jsp/"></property>
		<property name="suffix" value=".jsp"></property>
	</bean>
</beans>

users.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!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>
	 <c:forEach items="${maps }" var="map">
     ${map.value.id } -- <a href="../user/${map.value.id }/update">${map.value.name }</a> -- ${map.value.email } <br/>
  </c:forEach>
</body>
</html>

update.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
	pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!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>
 	<form action="../${user.id }/update" method="post">
 	      <input type="text" name="id" id="id" value="${user.id }"/> <br/>
		用户名：<input type="text" name="name" id="name" value="${user.name }"/> <br/>
		密码：<input type="password" name="password" id="password" value="${user.password }"><br/>
		邮箱：<input type="text" name="email" id="email" value="${user.email }"/><br/>
		<input type="submit" value="提交"/>
	</form>
</body>
</html>