以用户管理系统的开发为例,详细介绍SpringMVC+Spring+Mybatis的整合,并在编写controller的过程中记录SpringMVC中的一些高级应用(会特别标示)



1. 项目整合搭建过程

    1. 项目需求:主要实现简单的用户登录注册,以及修改自身信息功能,额外扩展一个用户管理系统,可以查看所有用户以及删除用户

    2. 搭建工程:创建Maven工程

  • 首先准备环境,mysql数据库、Spring的相关jar包、mybatis相关jar包,暂时只需要下图中的这些jar包,后面会逐步添加相关功能所需的jar包
  • 整合SpringMVC+Spring+Mybatis,整合思路如下
  • 第一步:整合dao层          mybatis和spring整合,通过spring管理mapper接口。
             使用mapper的扫描器自动扫描mapper接口在spring中进行注册。
  • 第二步:整合service层
             通过spring管理 service接口。
             使用配置方式将service接口配置在spring配置文件中。
             实现事务控制。
  • 第三步:整合springmvc由于springmvc是spring的模块,不需要整合。
  • springmvc 引入mybatisplus springmvc与mybatis整合_java

  • 整合dao层
  • 编写mybatis的配置文件,sqlmapconfig.xml
<?xml version="1.0" encoding="UTF-8"?>  
<!DOCTYPE configuration PUBLIC "-//ibatis.apache.org//DTD Config 3.0//EN" 
	"http://ibatis.apache.org/dtd/ibatis-3-config.dtd">
<configuration>
<!-- 配置分页插件,dialect指定使用的数据库类型	 -->
 	<plugins>
		<plugin interceptor="com.github.pagehelper.PageHelper">
			<property name="dialect" value="mysql"/>
		</plugin>
	</plugins>
</configuration>
  • 编写applicationContext_dao.xml,将mybatis和spring进行整合:配置数据源、SqlSessionFactory、mapper扫描器
<?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:jdbc="http://www.springframework.org/schema/jdbc"  
	xmlns:jee="http://www.springframework.org/schema/jee" 
	xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:aop="http://www.springframework.org/schema/aop" 
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	xmlns:util="http://www.springframework.org/schema/util"
	xmlns:jpa="http://www.springframework.org/schema/data/jpa"
	xsi:schemaLocation="
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd
		http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.2.xsd
		http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.2.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
		http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
		http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
		http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.2.xsd">
	
	<!-- mybatis配置 -->
	<context:property-placeholder location="classpath:db.properties"/>
	<bean id="datasource" class="org.apache.commons.dbcp.BasicDataSource">
		<property name="driverClassName" value="${jdbc.driver}"></property>
		<property name="url" value="${jdbc.url}"></property>
		<property name="password" value="${jdbc.password}"></property>
		<property name="username" value="${jdbc.name}"></property>
	</bean>
	<bean id="ssf" class="org.mybatis.spring.SqlSessionFactoryBean">
		<property name="dataSource" ref="datasource"></property>
		<property name="configLocation" value="classpath:conf/SqlMapConfig.xml"></property>
	</bean>
	<bean id="mfc" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<property name="basePackage" value="user_manage.mapper"></property>
		<property name="sqlSessionFactoryBeanName" value="ssf"></property>
	</bean>

</beans>
  • 逆向工程生成po类及mapper:对于单表查询使用mybatis逆向工程生成的mapper接口和对于的映射文件足够使用,也可以自己添加映射文件
import java.util.List;
import org.apache.ibatis.annotations.Param;
import user_manage.pojo.User;
import user_manage.pojo.UserExample;

public interface UserMapper {
    long countByExample(UserExample example);

    int deleteByExample(UserExample example);

    int deleteByPrimaryKey(Integer userAccount);

    int insert(User record);

    int insertSelective(User record);

    List<User> selectByExample(UserExample example);

    User selectByPrimaryKey(Integer userAccount);

    int updateByExampleSelective(@Param("record") User record, @Param("example") UserExample example);

    int updateByExample(@Param("record") User record, @Param("example") UserExample example);

    int updateByPrimaryKeySelective(User record);

    int updateByPrimaryKey(User record);
}
  • 整合service层:service层即业务层,在这里实现主要的处理逻辑代码
  • 编写service层接口,以及接口实现类
import java.util.List;

import user_manage.pojo.User;

public interface UserService {
	public void insertUser(User user);
	public void deleteUser(int user_account);
	public List<User> findUserList(int pageNumber,int rows);
	public void updateUser(User user);
}
  • 将接口实现类扫描进Spring容器中,通过Spring进行管理,并创建applicationContext-service.xml,文件中配置扫描service。
<?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:jdbc="http://www.springframework.org/schema/jdbc"  
	xmlns:jee="http://www.springframework.org/schema/jee" 
	xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:aop="http://www.springframework.org/schema/aop" 
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	xmlns:util="http://www.springframework.org/schema/util"
	xmlns:jpa="http://www.springframework.org/schema/data/jpa"
	xsi:schemaLocation="
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd
		http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.2.xsd
		http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.2.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
		http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
		http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
		http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.2.xsd">
	
	<context:component-scan base-package="user_manage.service"></context:component-scan>
</beans>
  • 配置开启事务管理:编写applicationContext_tx.xml,对service层中的所有方法开启事务管理
<?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:jdbc="http://www.springframework.org/schema/jdbc"  
	xmlns:jee="http://www.springframework.org/schema/jee" 
	xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:aop="http://www.springframework.org/schema/aop" 
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	xmlns:util="http://www.springframework.org/schema/util"
	xmlns:jpa="http://www.springframework.org/schema/data/jpa"
	xsi:schemaLocation="
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd
		http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.2.xsd
		http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.2.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
		http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
		http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
		http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.2.xsd">
	
	
	<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="datasource"></property>
	</bean>
	<tx:advice id="txAdvice" transaction-manager="transactionManager">
		<tx:attributes>
		<!-- 传播行为 -->
			<tx:method name="save*" propagation="REQUIRED"/>
			<tx:method name="insert*" propagation="REQUIRED"/>
			<tx:method name="add*" propagation="REQUIRED"/>
			<tx:method name="update*" propagation="REQUIRED"/>
			<tx:method name="delete*" propagation="REQUIRED"/>
			<tx:method name="find*" propagation="SUPPORTS" read-only="true"/>
			<tx:method name="select*" propagation="SUPPORTS" read-only="true"/>
			<tx:method name="get*" propagation="SUPPORTS" read-only="true"/>
		</tx:attributes>
	</tx:advice>
	
	<!-- AOP配置 -->
	<aop:config>
		<aop:advisor advice-ref="txAdvice" pointcut="execution(* user_manage.service.*.*(..))"/>
	</aop:config>
</beans>
  • 整合Controller层,编写SpringMVC配置文件:
  • 创建springmvc.xml文件,配置处理器映射器、适配器和视图解析器,并配置扫描所有的controller类
<?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:jdbc="http://www.springframework.org/schema/jdbc"  
	xmlns:jee="http://www.springframework.org/schema/jee" 
	xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:aop="http://www.springframework.org/schema/aop" 
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	xmlns:util="http://www.springframework.org/schema/util"
	xmlns:jpa="http://www.springframework.org/schema/data/jpa"
	xsi:schemaLocation="
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd
		http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.2.xsd
		http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.2.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
		http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd
		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
		http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
		http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.2.xsd">
	
	<context:component-scan base-package="user_manage.controller"></context:component-scan>
	<mvc:annotation-driven></mvc:annotation-driven>
	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/WEB-INF/jsp/"></property>
		<property name="suffix" value=".jsp"></property>
	</bean>
<!--该配置用于接收上传的文件-->
	<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
		<property name="maxUploadSize">
			<value>1048576</value>
		</property>
		<property name="defaultEncoding">
			<value>utf-8</value>
		</property>
	</bean>
<!--该配置用于处理RESTful风格路径所引起的访问静态资源路径错误问题-->
	<mvc:resources location="/WEB-INF/js/" mapping="/js/**"/>
	<mvc:resources location="/WEB-INF/html/" mapping="/html/**"/>
</beans>
  • 编写Controller类
  • 编写jsp
  • 加载spring容器:在web.xml中,将mapper、service、controller层的配置文件加载到spring容器中。并且配置前端控制器。
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns="http://xmlns.jcp.org/xml/ns/javaee"
	xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
	id="WebApp_ID" version="3.1">
	<display-name>user_manage</display-name>
	<!-- 通过 controller、service、dao三层的配置文件加载spring容器,这里是spring应用上下文-->
	<context-param>
		<param-name>contextConfigLocation</param-name>
<!-- *表示通配符,以通配符的方式匹配加载配置文件-->
		<param-value>classpath:conf/applicationContext_*.xml</param-value>
	</context-param>
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
	
	<!-- RESTful风格的路径配置 -->
	<servlet>
		<servlet-name>RESTful</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<!--SpringMVC加载的配置文件,这里是springweb应用上下文 -->
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:conf/springMVC.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
	<servlet-mapping>
		<servlet-name>RESTful</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>
	<!-- 以.do结尾的路径也会接收 -->
	<servlet>
		<servlet-name>spring</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<!-- 配置SpringMVC加载的配置文件 -->
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:conf/springMVC.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
	<servlet-mapping>
		<servlet-name>spring</servlet-name>
		<url-pattern>*.do</url-pattern>
	</servlet-mapping>

	<!-- post请求编码过滤器,将post中的请求参数统一转为utf-8编码,/*表示拦截所有路径请求 -->
	<filter>
		<filter-name>postEncode</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>postEncode</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
</web-app>


2. 用户注册功能开发

    1. 操作流程:首先进入注册页面,然后填写注册所需的数据,然后点击注册,发送请求

    2. 开发Mapper:

<insert id="insertSelective" parameterType="user_manage.pojo.User">
  <!-- 将自增主键生成的结果回写到传入的user_manage.pojo.User对象中 -->
  	<selectKey keyProperty="userAccount" keyColumn="user_account" order="AFTER" resultType="int">
  		select last_insert_id()
  	</selectKey>
    insert into user
    <trim prefix="(" suffix=")" suffixOverrides=",">
      <if test="userAccount != null">user_account,</if>
      <if test="userName != null">user_name,</if>
      <if test="userPassword != null">user_password,</if>
      <if test="userAge != null">user_age,</if>
      <if test="userAddress != null">user_address,</if>
      <if test="userTelephone != null">user_telephone,</if>
      <if test="userImage != null">user_image,</if>
    </trim>
    <trim prefix="values (" suffix=")" suffixOverrides=",">
      <if test="userAccount != null">#{userAccount,jdbcType=INTEGER},</if>
      <if test="userName != null">#{userName,jdbcType=VARCHAR},</if>
      <if test="userPassword != null">#{userPassword,jdbcType=VARCHAR},</if>
      <if test="userAge != null">#{userAge,jdbcType=INTEGER},</if>
      <if test="userAddress != null">#{userAddress,jdbcType=VARCHAR}, </if>
      <if test="userTelephone != null">#{userTelephone,jdbcType=CHAR},</if>
      <if test="userImage != null">#{userImage,jdbcType=VARCHAR},</if>
    </trim>
  </insert>

    3. 开发service:实现insertUser方法

public void insertUser(User user) {
		userMapper.insertSelective(user);
	}



4. 开发Controller:通过该开发了解@RequestMapping注解的部分特性、controller方法的返回值、参数绑定

  • 关于@RequestMapping注解的部分特性:
  • url映射:定义controller类中方法对应的url,进行处理器映射使用。
  • 窄化请求映射路径:如果controller类中的每个方法都在同一级请求路径之下(根路径),那么就可以将根路径写在controller上,子路径写在方法上,最后匹配的路径就是根路径+子路径,这样做的好处就是如果controller中的方法很多,就不用重复的去相同的路径部分,减少代码量
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
/**
 * @ClassName:PageController
 * @Description:页面跳转,主要请求路径为/page/regist.do,不写.do是因为在前端控制器中配置扫描以.do结尾的请求路径
 * 所以在RequestMapping中就不需要写.do
 */
@Controller
@RequestMapping("/page")
public class PageController {
	@RequestMapping("/regist")
	public ModelAndView toRegist(){
		ModelAndView mv=new ModelAndView();
		mv.setViewName("regist");
		return mv;
	}	
}
  • 限制http请求方法:出于安全性考虑,对http的请求方法限制。如果限制只接受post方式的请求,但进行get请求,则会报错
//限制只接受post和get方式的请求
	@RequestMapping(value="/regist",method={RequestMethod.GET,RequestMethod.POST})
  • 关于Controller方法的返回值:
  • 返回ModelAndView:定义ModelAndView,将model和view分别进行设置,返回给前端控制器进行渲染和处理。
@RequestMapping(value="/regist",method={RequestMethod.GET,RequestMethod.POST})
	public ModelAndView toRegist(){
		ModelAndView mv=new ModelAndView();
		mv.setViewName("regist");
		return mv;
	}
  • 返回String:如果controller方法返回string,有多重含义
  • 表示返回逻辑视图名,所写值要考虑视图解析器中是否配置了前缀和后缀。真正视图(jsp路径)=前缀+逻辑视图名+后缀
//如果返回的String表示逻辑视图名,那么,只需要在方法的形参中添加一个Model类型的参数,
	//就会自动将Model对象和逻辑视图名代表的逻辑视图传给前端控制器进行处理,相当于返回ModelAndView
	@RequestMapping(value="/regist",method={RequestMethod.GET,RequestMethod.POST})
	public String toRegist(Model model){
		model.addAttribute("key", "value");
		return "regist";
	}
  • redirect重定向:redirect重定向特点就是浏览器地址栏中的url会变化。修改提交的request数据无法传到重定向的地址。因为重定向后重新进行request(request无法共享)
@Controller
@RequestMapping("/page")
public class PageController {
//如果请求路径为/page,那么主动重定向跳转至注册页面
	@RequestMapping("/")
	public String toPage(){
		return "redirect:regist.do";
	}
	@RequestMapping(value="/regist",method={RequestMethod.GET,RequestMethod.POST})
	public String toRegist(Model model){
		model.addAttribute("key", "value");
		return "regist";
	}	
}
  • forward页面转发:通过forward进行页面转发,浏览器地址栏url不变,request可以共享。
@Controller
@RequestMapping("/page")
public class PageController {
//如果请求路径为/page,那么主动重定向跳转至注册页面
	@RequestMapping("/")
	public String toPage(){
		return "forward:regist.do";
	}
	@RequestMapping(value="/regist",method={RequestMethod.GET,RequestMethod.POST})
	public String toRegist(Model model){
		model.addAttribute("key", "value");
		return "regist";
	}	
}
  • 如果返回void:在controller方法形参上可以定义request和response,使用request或response指定响应结果
  • 通过request进行页面转发,并传递参数
@RequestMapping(value="/regist",method={RequestMethod.GET,RequestMethod.POST})
	public void toRegist(HttpServletRequest req,HttpServletResponse res){
		req.setAttribute("key", "value");
		try {
			req.getRequestDispatcher("path").forward(req, res);
		} catch (ServletException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
  • 通过response页面重定向,无法传递参数,response.sendRedirect("url")
  • 也可以通过response指定响应结果,例如html等,响应json数据如下:
    response.setCharacterEncoding("utf-8");
    response.setContentType("application/json;charset=utf-8");
    response.getWriter().write("json串");
  • 参数绑定:从客户端发送的请求中包括key/value数据,经过参数绑定,将key/value数据绑定到controller方法的形参上。
  • 参数绑定默认支持的类型:直接在controller方法形参中定义这些类型的对象,就可以使用这些对象。因为在参数绑定过程中,控制器适配器如果遇到这些类型直接进行参数绑定。类型有HttpServletRequest、HttpServletResponse、HttpSession、Model/ModelMap(model是一个接口,modelMap是一个接口实现 ,可以将model数据填充到request域)
  • 参数绑定默认支持的类型还包括Java中的简单类型(常用有String和8个基本类型):通过在形参前添加注解@RequestParam对简单类型的参数进行绑定,如果不使用@RequestParam,要求request传入参数名称(名称实际是key的值,request传入参数都是key/value,而且value都是字符串格式,所以需要转换器converters将字符串转为形参类型)和controller方法的形参名称一致,方可绑定成功(此外还要必须保证value值能够转换为形参类型,否则就会出现错误)。如果使用@RequestParam,不用限制request传入参数名称和controller方法的形参名称一致。通过required属性指定参数是否必须要传入,如果设置为true,通过defaultValue指定如果传入的值为空,则设置一个默认值,value就表示指定参数中的key名称
@RequestMapping(value="/regist",method={RequestMethod.GET,RequestMethod.POST})
	public String toRegist(Model model,@RequestParam(value="id",required=true,defaultValue="1") int id){
		model.addAttribute("key", "value");
		return "regist";
	}
  • 绑定pojo参数类型:如果形参类型为pojo类型,那么就必须满足一个规范,请求中传来的每一个key/value数据,每个数据的key都要与controller的pojo形参中的属性名称一致,那么就会将数据绑定到pojo对应的属性,如果不一致,那么请求中的数据就无法绑定到pojo对象的属性中
  • 自定义一个converters转换器:将请求中的日期字符串转换为日期类型数据,这样就可以实现日期类型的参数绑定,如果绑定为pojo类型,即便pojo类型中包括非简单类型的属性,也需要对该属性的类型定义一个转换器,这样才能完成对pojo类的参数绑定。以实现java.util.Date的转换器为例
  • 首先定义converters转换器类
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import org.springframework.core.convert.converter.Converter;
//自定义转换器必须实现org.springframework.core.convert.converter.Converter接口
public class DateConvertor implements Converter<String,Date>{
	@Override
	public Date convert(String source) {
		SimpleDateFormat sdf=new SimpleDateFormat("yy-MM-dd HH:mm:ss");
		Date date=null;
		try {
			date = sdf.parse(source);
		} catch (ParseException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return date;
	}
}
  • 将Converter配置装载进入SpringMVC的转换器集合中
<mvc:annotation-driven conversion-service="conversionService"></mvc:annotation-driven>
	<bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
		<property name="converters">
			<list>
				<bean class="user_manage.convertor.DateConvertor"></bean>
			</list>
		</property>
	</bean>