SpringMVC Resetful+Hibernate+MySQL实现增删改查操作
一、Maven构建项目
该示例采用Maven构建一个Web项目，项目结构如图所示：
其中，pom.xml文件中依赖如下所示，自动添加相应依赖包，包括Spring MVC、Hibernate、MySQL JDBC等：
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>sdd</groupId>
<artifactId>sdd</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<name />
<description />
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>bean-validator</artifactId>
<version>3.0-JBoss-4.0.2</version>
</dependency>
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.annotation</artifactId>
<version>3.0.1</version>
</dependency>
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.ejb</artifactId>
<version>3.0.1</version>
</dependency>
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.enterprise.deploy</artifactId>
<version>3.0.1</version>
</dependency>
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.jms</artifactId>
<version>3.0.1</version>
</dependency>
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.management.j2ee</artifactId>
<version>3.0.1</version>
</dependency>
<dependency>
<groupId>org.eclipse.persistence</groupId>
<artifactId>javax.persistence</artifactId>
<version>2.0.0</version>
</dependency>
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.resource</artifactId>
<version>3.0.1</version>
</dependency>
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.security.auth.message</artifactId>
<version>3.0.1</version>
</dependency>
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.security.jacc</artifactId>
<version>3.0.1</version>
<exclusions>
<exclusion>
<artifactId>javax.servlet</artifactId>
<groupId>org.glassfish</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.servlet.jsp.jstl</artifactId>
<version>3.0.1</version>
</dependency>
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.transaction</artifactId>
<version>3.0.1</version>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api-osgi</artifactId>
<version>2.2.1</version>
</dependency>
<dependency>
<groupId>javax.ws.rs</groupId>
<artifactId>jsr311-api</artifactId>
<version>1.1.1</version>
</dependency>
<dependency>
<groupId>org.glassfish.web</groupId>
<artifactId>jstl-impl</artifactId>
<version>1.2</version>
<exclusions>
<exclusion>
<artifactId>servlet-api</artifactId>
<groupId>javax.servlet</groupId>
</exclusion>
<exclusion>
<artifactId>jsp-api</artifactId>
<groupId>javax.servlet.jsp</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>javax.mail</groupId>
<artifactId>mail</artifactId>
<version>1.4.3</version>
</dependency>
<dependency>
<groupId>javax.xml</groupId>
<artifactId>webservices-api-osgi</artifactId>
<version>2.0.1</version>
</dependency>
<dependency>
<groupId>org.jboss.weld</groupId>
<artifactId>weld-osgi-bundle</artifactId>
<version>1.0.1-SP3</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-core-asl</artifactId>
<version>1.9.12</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.12</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.5.0</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.5.0</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.5.0</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.0.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>4.3.11.Final</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.20</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>4.0.5.RELEASE</version>
</dependency>
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.2</version>
<exclusions>
<exclusion>
<groupId>xerces</groupId>
<artifactId>xerces</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.6</version>
</dependency>
</dependencies>
<build>
<sourceDirectory>${basedir}/src</sourceDirectory>
<outputDirectory>${basedir}/WebRoot/WEB-INF/classes</outputDirectory>
<resources>
<resource>
<directory>${basedir}/src</directory>
<excludes>
<exclude>**/*.java</exclude>
</excludes>
</resource>
</resources>
<plugins>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<configuration>
<webappDirectory>${basedir}/WebRoot</webappDirectory>
<warSourceDirectory>${basedir}/WebRoot</warSourceDirectory>
</configuration>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
二、配置Web.xml
web.xml配置是整个框架整合的关键，需要配置对Spring的支持、SpringMVC的支持，同时需要解决浏览器对于rest PUT和DELETE请求的支持。
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<display-name></display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!-- 添加对spring的支持 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- Spring 刷新Introspector防止内存泄露 -->
<listener>
<listener-class>
org.springframework.web.util.IntrospectorCleanupListener
</listener-class>
</listener>
<!-- Spring MVC配置 -->
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<!-- 不能是/*，否则会报404 -->
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- 浏览器不支持put,delete等method,由该filter将/user?_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>
<!-- spring 名称一定要和servlet-mapping中servlet name一致 -->
<servlet-name>spring</servlet-name>
</filter-mapping>
<!-- 指定Spring配置文件位置 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
</web-app>
三、配置spring-servlet.xml
一般以servlet-name来命名，你也可以取其他名字。该文件主要配置Spring MVC，同时需要解决Spring MVC对静态文件的解析过滤，通常放在WEB-INF路径下，具体内容如下：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
<!-- Spring MVC扫描Control -->
<context:component-scan base-package="com.springmvc.control" />
<!-- 使用如下两个class激活@RequestMapping annotation -->
<bean
class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" />
<!-- 通过mvc:resources设置静态资源，这样servlet就会处理这些静态资源，而不通过控制器 -->
<!-- 设置不过滤内容，比如:css,jquery,img 等资源文件 -->
<mvc:resources location="/*.html" mapping="/**.html" />
<mvc:resources location="/css/*" mapping="/css/**" />
<mvc:resources location="/js/*" mapping="/js/**" />
<mvc:resources location="/images/*" mapping="/images/**" />
<!-- 对转向页面的路径解析。prefix：前缀， suffix：后缀 -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
<!-- 避免IE执行AJAX时,返回JSON出现下载文件 -->
<bean id="mappingJacksonHttpMessageConverter"
class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
<property name="supportedMediaTypes">
<list>
<value>text/html;charset=UTF-8</value>
</list>
</property>
</bean>
<!-- 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">
<property name="messageConverters">
<list>
<ref bean="mappingJacksonHttpMessageConverter" /><!-- json转换器 -->
</list>
</property>
</bean>
</beans>
四、创建并配置jdbc.properties
五、创建并配置applicationContext.xml文件jdbc.driverClassName=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=UTF-8 jdbc.username=root jdbc.password=root
该文件通常放在src目录下
<?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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd"> <!-- 注解支持 --> <context:annotation-config /> <!-- 启动组件扫描，排除@Controller组件，该组件由SpringMVC配置文件扫描 --> <context:component-scan base-package="com.springmvc.dao,com.springmvc.service"> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" /> </context:component-scan> <!-- JDBC属性文件位置 --> <context:property-placeholder location="classpath:jdbc.properties" /> <!-- MySQL数据库连接 --> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"> <property name="driverClassName" value="${jdbc.driverClassName}" /> <property name="url" value="${jdbc.url}" /> <property name="username" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> </bean> <!-- 创建sessionFactory工具类 --> <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop> <prop key="hibernate.show_sql">true</prop> </props> </property> <property name="mappingResources"> <list> <value>com/springmvc/model/User.hbm.xml</value> </list> </property> </bean> <!-- Spring接管Hibernate CRUD操作 --> <bean id="hibernateTemplate" class="org.springframework.orm.hibernate4.HibernateTemplate"> <property name="sessionFactory" ref="sessionFactory" /> </bean> <!-- Spring声明式事务管理器 --> <bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory" /> </bean> <!-- 配置事务特性，配置add，delete，update开始的方法，事务传播特性为required --> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <!-- REQUIRED 表示 如果存在一个事务，则支持当前事务。如果没有事务则开启 --> <tx:method name="add*" propagation="REQUIRED" /> <tx:method name="delete*" propagation="REQUIRED" /> <tx:method name="update*" propagation="REQUIRED" /> <tx:method name="*" read-only="true" /> </tx:attributes> </tx:advice> <!-- 配置那些类的方法进行事务管理，当前com.ssh2.basedao.impl包中的子包， 类中所有方法需要，还需要参考tx:advice的设置 --> <aop:config> <aop:pointcut id="allManagerMethod" expression="execution(* com.springmvc.service.*.*(..))" /> <aop:advisor advice-ref="txAdvice" pointcut-ref="allManagerMethod" /> </aop:config> <!-- 导入SpringMVC Servlet配置文件 --> <import resource="classpath*:spring-servlet.xml" /> </beans>
六、编写控制类
Controller控制类是Spring MVC的核心，类似于Struts2框架中的Action，通过@Controller注解实现Spring的注入，并通过@RequestMapping接收前端映射请求。加入返回值@ResponseBoady注解后，要把对象转换成json格式，缺少转换依赖的jar包，会出现以下异常的情况，需要添加依赖的jar，jackson-core-asl-1.9.12.jar，jackson-mapper-asl-1.9.12.jar问题解决。
Response Status: 406 (Not Acceptable)
package com.springmvc.control;
import javax.annotation.Resource;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;
import org.springframework.stereotype.Repository;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;
import com.springmvc.model.User;
import com.springmvc.service.UserService;
/**
* Scope：表示实例是原型，这样会对每一个请求实例化，保证线程安全 Spring中使用 Controller注解表示该类是控制器
* Repository注解Dao访问类 Service注解业务逻辑处理类 Resource注解表示使用某个bean资源
* RequestMapping：表示对该类所有方法的请求URL，前面必须接上/user，如/user/login 表示对login方法的请求访问
*
* @author Administrator
*
*/
@Scope("prototype")
@Controller
@RequestMapping("/user")
public class UserControl {
@Resource(name = "userService")
private UserService userService;
private String message;
/**
*
* Spring MVC中使用RequestMapping处理URL请求，
* GET：表示查询；POST：表示添加操作
* PUT：表示修改操作；DELETE：表示删除操作
* ResponseBody：表示返回对象或者值;
* consumes: 表示前端传过来的数据格式;
* produces：表示返回数据格式
*/
@RequestMapping(value = "/login", method = RequestMethod.GET, consumes = "application/json", produces = "application/json")
@ResponseBody
public User login(User user, Model model) {
// System.out.println(user.getUsername());
User u = userService.findUserByNameAndPassword(user);
return u;
}
@RequestMapping(value = "/addUser", method = RequestMethod.POST, produces = "application/json")
@ResponseBody
public String addUser(User user) {
boolean flag = userService.addUser(user);
if (flag) {
message = "success";
} else {
message = "error";
}
return message;
}
/**
* PathVariable:注解方法参数，表示该参数变量值是通过URL传递的
* URL中必须包含该参数变量名，变量名需要相同才能完成变量传递注入
*/
@RequestMapping(value = "/deleteUser/{id}", method = RequestMethod.DELETE, produces = "application/json")
@ResponseBody
public String deleteUser(@PathVariable Integer id) {
boolean flag = userService.deleteUser(id);
if (flag) {
message = "success";
} else {
message = "error";
}
return message;
}
public void setUserService(UserService userService) {
this.userService = userService;
}
public UserService getUserService() {
return userService;
}
}
七、编写业务逻辑类
package com.springmvc.service;
import java.util.List;
import javax.annotation.Resource;
import org.springframework.stereotype.Service;
import com.springmvc.dao.UserDao;
import com.springmvc.model.User;
@Service(value="userService")
public class UserService {
@Resource(name="userDao")
private UserDao userDao;
public User findUserByNameAndPassword (User user) {
List<User> listUsers = userDao.findByNameAndPassword(user);
if(listUsers.size() > 0) {
return listUsers.get(0);
}
return null;
}
public User findUserByName (String name) {
List<User> listUsers = userDao.findUserByName(name);
if(listUsers.size() > 0) {
return listUsers.get(0);
}
return null;
}
public boolean deleteUser(Integer id) {
return userDao.deleteUser(id);
}
public boolean addUser(User user) {
return userDao.addUser(user);
}
public UserDao getUserDao() {
return userDao;
}
public void setUserDao(UserDao userDao) {
this.userDao = userDao;
}
}
八、编写Dao操作类
package com.springmvc.dao;
import java.util.ArrayList;
import java.util.List;
import javax.annotation.Resource;
import org.springframework.orm.hibernate4.HibernateTemplate;
import org.springframework.stereotype.Repository;
import com.springmvc.model.User;
@Repository(value="userDao")
public class UserDao {
//hibernateTemplate是Spring提供的Hibernate Dao操作类，在applicationContext中已经完成bean注入，所以此处直接
//可以拿过来使用
@Resource(name="hibernateTemplate")
private HibernateTemplate hibernateTemplate;
//根据用户名和密码查询
public List<User> findByNameAndPassword (User user) {
String queryString = "from User where username = :username and password = :password";
String paramNames[] = {"username" , "password"};
String paramValues[] = {user.getUsername(),user.getPassword()};
//findByNamedParam方法提供hql方法参数查询，避免Sql注入漏洞
@SuppressWarnings("unchecked")
List<User> listUsers = (List<User>) hibernateTemplate.findByNamedParam(queryString, paramNames, paramValues);
return listUsers;
}
@SuppressWarnings("unchecked")
public List<User> findUserByName(String name) {
List<User> userList = new ArrayList<User>();
String queryString = "from User where username like:name";
userList = (List<User>) hibernateTemplate.findByNamedParam(queryString,"name",name);
return userList;
}
public boolean addUser(User user) {
try {
hibernateTemplate.save(user);
} catch (Exception e) {
return false;
}
return true;
}
public boolean deleteUser(Integer id) {
try {
User user = hibernateTemplate.get(User.class, id);
hibernateTemplate.delete(user);
} catch (Exception e) {
return false;
}
return true;
}
public HibernateTemplate getHibernateTemplate() {
return hibernateTemplate;
}
public void setHibernateTemplate(HibernateTemplate hibernateTemplate) {
this.hibernateTemplate = hibernateTemplate;
}
}
九、本示例中的Model类
package com.springmvc.model;
public class User {
private Integer id;
private String username;
private String password;
private String address;
private String tel;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getTel() {
return tel;
}
public void setTel(String tel) {
this.tel = tel;
}
}
十、前端JSP页面Ajax请求
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%> <% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>My JSP 'index.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> <!-- action uri 前面不能加/ 否则路径变成从根开始 --> <!-- <script type="text/javascript" src="js/jquery-easyui-1.4.4/jquery.min.js"></script> --> <script type="text/javascript" src="js/jquery-easyui-1.4.4//jquery.min.js"></script> <script type="text/javascript"> $(document).ready( function() { $("#btnQuery").click( function() { var username = $("#username").val(); var password = $("#password").val(); var data = { "username" : username, "password" : password }; // alert(JSON.stringify(data)); $.ajax({ type : "GET", url : "user/login", dataType : "json", //后台返回值类型 data : data, beforeSubmit : function() { }, success : function(data) { alert(data.username + " " + data.password + " " + data.address + " " + data.tel); }, error : function(data) { alert("error"); } }); }); $("#btnAdd").click( function() { var username = $("#username").val(); var password = $("#password").val(); var address = $("#address").val(); var tel = $("#tel").val(); var data = { "username" : username, "password" : password, "address" : address, "tel" : tel }; $.ajax({ type : "POST", url : "user/addUser", dataType : "json", //后台返回值类型 data : data, beforeSubmit : function() { }, success : function(data) { if(data == 'success') { alert("添加成功"); }else { alert("添加失败"); } }, error : function(data) { alert("error"); } }); }); $("#btnDel").click( function() { var id = $("#id").val(); $.ajax({ type : "DELETE", url : "user/deleteUser/"+id, dataType : "json", //后台返回值类型 beforeSubmit : function() { }, success : function(data) { if(data == 'success') { alert("删除成功"); }else { alert("删除失败"); } }, error : function(data) { alert("error"); } }); }); }); </script> </head> <body> <!-- 查询 --> 用户名： <input type="text" id="username" value="xx"> <br> 密码： <input type="password" id="password" value="1233"> <br> <a href="javascript:void(0)" id="btnQuery">查询</a> <br> <!-- 添加 --> 用户名： <input type="text" id="username" value="张三图"> <br> 密码： <input type="password" id="password" value="1233"> <br> 地址： <input type="text" id="address" value="安徽天长"> <br> 联系方式： <input type="password" id="tel" value="1232333"> <br> <input type="button" id="btnAdd" value="提交"> <br> <!-- 删除 --> <input type="text" id="id" value="51"> <input type="button" id="btnDel" value="删除"> <%-- <form:form action="user/login" method="post"> 用户名：<input type="text" name="username" value="xx"><br> 密码： <input type="password" name="password" value="1233"><br> 用户名：<input type="text" name="address" value="ss"><br> 密码： <input type="password" name="tel" value="1232333"><br> <input type="submit" value="提交"> </form:form> --%> <%--<form:form action="user/deleteUser/50" method="delete"> <input type="submit" value="提交"> </form:form> --%> </body> </html>HTTP请求中本身是不支持PUT和DELETE method方法请求的，本文在web.xml中添加了过滤器处理该部分请求，并且通过Ajax发送请求。但是Spring MVC本身也提供了<form:form>标签，通过表单提交的方式发送Restful请求，如上面代码中注释内容所示。只需要在页面前面导入标签库即可。
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%>