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", "zhangwuji@qq.com"));
maps.put("2", new User("2", "周芷若", "123", "zhouzhiruo01@sina.com.cn"));
maps.put("3", new User("3", "包大人", "123", "baodaren@sohu.com.cn"));
maps.put("4", new User("4", "吕布", "123", "lvbu008@163.com.cn"));
}

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>