spring3实现MVC的rest

程序员文章站 2022-07-08 10:24:28

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首先配置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/web-app_2_5.xsd"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
	id="WebApp_ID" version="2.5">



	<servlet>
		<servlet-name>springmvc</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<load-on-startup>1</load-on-startup>
	</servlet>
	
	<!-- 覆盖default servlet的/, springmvc servlet将处理原来处理静态资源的映射 -->
	<servlet-mapping>
		<servlet-name>springmvc</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>

	<!--
		浏览器不支持put,delete等method,由该filter将/blog?_method=delete转换为标准的http
		delete方法
	-->
	<filter>
		<filter-name>HiddenHttpMethodFilter</filter-name>
		<filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
	</filter>

	<filter-mapping>
		<filter-name>HiddenHttpMethodFilter</filter-name>
		<servlet-name>springmvc</servlet-name>
	</filter-mapping>

</web-app>

然后配置springmvc-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>

<!-- 
	修改说明:
	1.修改<context:component-scan以确定要加载的controller,默认为com.**.controller
	2.修改class=ControllerClassNameHandlerMapping节点的pathPrefix以确定要生成的前缀
 -->
<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"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans 
        http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context-2.5.xsd"
    default-autowire="byName"   >
    <!-- 对web包中的所有controller类进行扫描，以完成Bean创建和自动依赖注入的功能 -->
	<context:component-scan base-package="com.**.controller" />
	<bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" />
	<!-- 启动Spring MVC的注解功能，完成请求和注解POJO的映射 -->		
	<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />  
	<!-- 对模型视图名称的解析，即在模型视图名称添加前后缀 -->
	<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"
	 p:prefix="/WEB-INF/pages/" p:suffix=".jsp"/>

        
</beans>

SERVLET类：

package com.insigma.controller;

import java.util.ArrayList;
import java.util.List;

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.bind.annotation.RequestMethod;

import com.insigma.domain.Person;

@Controller
@RequestMapping("/people")
public class UserInfoController {

	private static List list = new ArrayList<Person>();

	static {
		Person person = new Person();
		person.setId(new Long(1));
		person.setName("He Jing");
		person.setTitle("None");
		list.add(person);
		Person person1 = new Person();
		person1.setId(new Long(2));
		person1.setName("Kevin");
		person1.setTitle("Who");
		list.add(person1);
	}

	@RequestMapping(method = RequestMethod.GET)
	public String getAll(Model model) {
		System.out.println("=============> Get list");
		model.addAttribute("list", list);
		return "people";
	}

	@RequestMapping(value = "/{id}", method = RequestMethod.GET)
	public String getPerson(@PathVariable("id") Long personId, Model model) {
		System.out.println("=========> Get one person");
		Person person;
		List list2 = new ArrayList<Person>();
		for (int i = 0; i < list.size(); i++) {
			person = (Person) list.get(i);
			if (person.getId().equals(personId)) {
				list2.add(person);
			}
		}
		model.addAttribute("list", list2);
		return "people";
	}

	@RequestMapping(method = RequestMethod.POST)
	public String savePerson(Person person, Model model) {
		list.add(person);
		model.addAttribute("list", list);
		return "people";
	}

	@RequestMapping(value = "/{id}", method = RequestMethod.DELETE)
	public String deletePerson(@PathVariable("id") Long personId, Model model) {
		Person person;
		for (int i = 0; i < list.size(); i++) {
			person = (Person) list.get(i);
			if (person.getId().equals(personId)) {
				list.remove(i);
			}
		}
		model.addAttribute("list", list);
		return "people";
	}

	@RequestMapping(value = "/{id}", method = RequestMethod.PUT)
	public String updatePerson(@PathVariable("id") Long personId, Person person, Model model) {
		Person person2;
		for (int i = 0; i < list.size(); i++) {
			person2 = (Person) list.get(i);
			if (person2.getId().equals(personId)) {
				person2.setId(person.getId());
				person2.setName(person.getName());
				person2.setTitle(person.getTitle());
			}
		}
		model.addAttribute("list", list);
		return "people";
	}
}

people.jsp:

<%@ page contentType="text/html;charset=UTF-8" language="java"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt"%>

<html>
<body>
<table>
	<tr>
		<td>People id</td>
		<td>People name</td>
		<td>People title</td>
		<td></td>
	</tr>
	<c:forEach items="${list}" var="people">
		<tr>
			<td><input id="pid${people.id}" type="text" value='${people.id}'/></td>
			<td><input id="pna${people.id}" type="text" value='${people.name}'/></td>
			<td><input id="pti${people.id}" type="text" value='${people.title}'/></td>
			<td><input type="button" value="Update" onClick="upd('${people.id}')" /></td>
			<td><input type="button" value="Delete" onClick="del('${people.id}')" /></td>
		</tr>
	</c:forEach>



	<form id="upForm" action="/TestREST/people" method="POST">
		<input id="people_id" name="id" type="hidden" />
		<input id="people_name" name="name" type="hidden" />
		<input id="people_title" name="title" type="hidden" />
		<input type="hidden" name="_method" value="put" />
	</form>

	<form id="delForm" action="/TestREST/people/" method="POST"><input
		type="hidden" name="_method" value="delete" /></form>
	</table>


	<table>
		<form action="/TestREST/people" method="POST">
			<tr>
				<td>people_id:<input id="people_id" name="id" type="text" /></td>
			</tr>
			<tr>
				<td>people_name:<input id="people_name" name="name" type="text" /></td>
			</tr>
			<tr>
				<td>people_title:<input id="people_title" name="title" type="text" /></td>
			</tr>
			<tr>
				<td><input type="submit" value="Add" /></td>
			</tr>		
		</form>
	</table>

</body>
<Script>
	function del(id) {
		document.getElementById('delForm').action = '/TestREST/people/' + id;
		document.getElementById('delForm').submit();
	}

	function upd(id) {
		var form=document.getElementById('upForm');
		form.action = '/TestREST/people/' + id;
		form.people_id.value=document.getElementById('pid'+id).value;
		form.people_name.value=document.getElementById('pna'+id).value;
		form.people_title.value=document.getElementById('pti'+id).value;
		form.submit();
	}
</Script>
</html>

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