第64天(就业班) springmvc

01_JavaWeb中的MVC设计模式1）MVC这种设计模式，不光运用于Web领域，而且也能用于非Web领域2）今天说的MVC特指一种表现层设计模式，不限于Java语言02_回顾struts2+Spring开发1）需求：学生注册【add.jsp->StudentAction.java->addOK.jsp】2）struts2框架有如下特点：    每次请求action时，都创建action实例    action类一成不变的直接或间接继续ActionSupport类 action类中的业务控制方法总是相类似的签名且无参    action类中，接收参数要用实例变量和对应的set方法或set/get方法struts.xml配置文件，必须以struts.xml命名，且放在src目录下--oraclecreate table emps(id varchar2(40) primary key,username varchar2(10) not null,salary number(6,2));commit;desc emp;package cn.itcast.javaee.springmvc.app02;import java.util.UUID;public class Emp {private String id;//编号private String username;//姓名private Double salary;//薪水public Emp(){}public Emp(String username, Double salary) {this.username = username;this.salary = salary;}public String getId() {return UUID.randomUUID().toString();}public void setId(String id) {this.id = id;}public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public Double getSalary() {return salary;}public void setSalary(Double salary) {this.salary = salary;}}package cn.itcast.javaee.springmvc.app02;import com.mchange.v2.c3p0.ComboPooledDataSource;public class JdbcUtil {private static ComboPooledDataSource dataSource = new ComboPooledDataSource();public static ComboPooledDataSource getDataSource() {return dataSource;}}<?xml version="1.0" encoding="UTF-8"?><c3p0-config><default-config><property name="driverClass">oracle.jdbc.driver.OracleDriver</property><property name="jdbcUrl">jdbc:oracle:thin:@127.0.0.1:1521:orcl</property><property name="user">scott</property><property name="password">tiger</property><property name="acquireIncrement">2</property><property name="initialPoolSize">5</property><property name="minPoolSize">1</property><property name="maxPoolSize">5</property></default-config></c3p0-config>package cn.itcast.javaee.springmvc.app02;import org.apache.commons.dbutils.QueryRunner;public class EmpDao {/** * 增加员工 */public void add(Emp emp) throws Exception{QueryRunner runner = new QueryRunner(JdbcUtil.getDataSource());String sql = "INSERT INTO EMPS(ID,USERNAME,SALARY) VALUES(?,?,?)";Object[] params = {emp.getId(),emp.getUsername(),emp.getSalary()};runner.update(sql,params);}/** * 测试  */public static void main(String[] args) throws Exception{EmpDao dao = new EmpDao();dao.add(new Emp("测试",5000D));}}package cn.itcast.javaee.springmvc.app02;public class EmpService {private EmpDao empDao;public void setEmpDao(EmpDao empDao) {//springioc自动注入this.empDao = empDao;}/** * 增加员工 */public void addEmp(Emp emp) throws Exception{if(emp == null){throw new RuntimeException("EmpService参数不能为空");}empDao.add(emp);}}<!-- 注册spring提供的针对POST请求的中文乱码问题 --><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><?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE struts PUBLIC    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"    "http://struts.apache.org/dtds/struts-2.3.dtd"><struts>   <package name="myPackage" extends="struts-default" namespace="/">   <action name="register" class="empActionID" method="registerMethod">   <result name="success" type="dispatcher">   /jsp/success.jsp   </result>   </action>   </package></struts>package cn.itcast.javaee.springmvc.app02;import com.opensymphony.xwork2.ActionSupport;/** * 员工管理模块 * @author xiongpan */public class EmpAction extends ActionSupport{private EmpService empService;//业务层public void setEmpService(EmpService empService) {//springioc自动注入实现类this.empService = empService;}private Emp emp;//模型public Emp getEmp() {return emp;}public void setEmp(Emp emp) {this.emp = emp;}/** * 注册员工 */public String registerMethod() throws Exception{empService.addEmp(emp);return "success";}}<!-- 注册EmpDao类 --><bean id="empDaoID" class="cn.itcast.javaee.springmvc.app02.EmpDao"></bean><!-- 注册EmpService类 --><bean id="empServiceID" class="cn.itcast.javaee.springmvc.app02.EmpService"><property name="empDao" ref="empDaoID"/></bean><!-- 注册EmpAction类 --><bean id="empActionID" class="cn.itcast.javaee.springmvc.app02.EmpAction" scope="prototype"><property name="empService" ref="empServiceID"/></bean>

<%@ page language="java" pageEncoding="UTF-8"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>  <head>    <title>struts2+spring+jdbc+oracle</title>    <meta charset="utf-8">  </head>  <body><form action="${pageContext.request.contextPath}/register.action" method="POST"><table border="2" align="center"><tr><th>姓名</th><td><input type="text" name="emp.username" value="哈哈"/></td></tr><tr><th>薪水</th><td><input type="text" name="emp.salary" value="5000"/></td></tr><tr><td colspan="2" align="center"><input type="submit" value="注册"/></td></tr></table></form>  </body></html>03_初识springmvc工作流程什么是springmvc，它与spring有什么关系springmvc属于spring框架的后续产品，用在基于MVC的表现层开发，类似于struts2框架参见<<springmvc与spring的关系.JPG>>

04_springmvc快速入门（XML版本）

1）springmvc快速入门（传统版）

   步一：创建springmvc-day01这么一个web应用

   步二：导入springioc，springweb , springmvc相关的jar包

步三：在/WEB-INF/下创建web.xml文件<!-- 注册springmvc核心控制器 --><servlet><servlet-name>DispatcherServlet</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><!-- 通知DispatcherServlet去指定的目录下加载springmvc.xml配置文件 --><init-param><param-name>contextConfigLocation</param-name><param-value>classpath:springmvc.xml</param-value></init-param></servlet><servlet-mapping><servlet-name>DispatcherServlet</servlet-name><url-pattern>*.action</url-pattern></servlet-mapping>步四：创建HelloAction.java控制器类package cn.itcast.javaee.springmvc.app05;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.web.servlet.ModelAndView;import org.springframework.web.servlet.mvc.Controller;/** * 单例 * 控制器Action * 处理器Action * @author AdminTC */public class HelloAction implements Controller{public HelloAction(){System.out.println("HelloAction()::" + this.hashCode());}/** * 业务方法 */public ModelAndView handleRequest(HttpServletRequest request,HttpServletResponse response) throws Exception {System.out.println("HelloAction::handleRequest()");/** * ModelAndView表示向视图封装的数据和真实路径 */ModelAndView modelAndView = new ModelAndView();modelAndView.addObject("message","这是我的第一个springmvc应用程序，映射器_适配器_视图解析器_都可省略");modelAndView.setViewName("/jsp/success.jsp");return modelAndView;}}package cn.itcast.javaee.springmvc.app05;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.web.servlet.ModelAndView;import org.springframework.web.servlet.mvc.Controller;/** * 单例 * 控制器Action * 处理器Action * @author AdminTC */public class ByeAction implements Controller{public ByeAction(){System.out.println("ByeAction()::" + this.hashCode());}/** * 业务方法 */public ModelAndView handleRequest(HttpServletRequest request,HttpServletResponse response) throws Exception {System.out.println("ByeAction::handleRequest()");/** * ModelAndView表示向视图封装的数据和真实路径 */ModelAndView modelAndView = new ModelAndView();modelAndView.addObject("message","这是我的第一个springmvc应用程序，映射器_适配器_视图解析器_都可省略");modelAndView.setViewName("/jsp/success.jsp");return modelAndView;}}步五：在/WebRoot/下创建jsp/success.jsp<%@ page language="java" pageEncoding="UTF-8"%><%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>  <body>success.jsp<br/>成功<br/>${requestScope.message}<br/>姓名：${requestScope.emp.username}<br/>性别：${requestScope.emp.gender}<br/>入职时间：${requestScope.emp.hiredate}<br/><hr/>入职时间：<fmt:formatDate value="${requestScope.emp.hiredate}"type="date"dateStyle="medium"/><!-- 1)fmt:formatDate 来源于 http://java.sun.com/jsp/jstl/fmt2)fmt:formatDate作用是格式化日期的显示，例如：2015年5月10日 星期日3)value表示需要格式化的值4)type表示显示日期,时间,都显示  type=date表示只显示日期  type=time表示只显示时间  type=both表示日期时间均显示5)dateStyle表示显示日期的格式：short/medium/default/long/full-->  </body></html>步六：在/WEB-INF/创建DispatcherServlet-servlet.xml配置文件，xml头部信息与spring.xml相同       注意：该配置文件的命名规则：web.xml文件中配置的<servlet-name>的值-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:aop="http://www.springframework.org/schema/aop"      xmlns:tx="http://www.springframework.org/schema/tx"  xmlns:mvc="http://www.springframework.org/schema/mvc"      xsi:schemaLocation="        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     http://www.springframework.org/schema/aop   http://www.springframework.org/schema/aop/spring-aop-3.0.xsd    http://www.springframework.org/schema/tx      http://www.springframework.org/schema/tx/spring-tx-3.0.xsd          http://www.springframework.org/schema/mvc      http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd              ">            <!-- 控制器(程序员) -->    <bean name="/hello.action" class="cn.itcast.javaee.springmvc.base.HelloAction"></bean>              <!-- 映射器(框架) -->      <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"></bean>                  <!-- 适配器(框架) -->      <bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"></bean>                  <!-- 视图解析器(框架) -->      <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"></bean>              </beans>步七：部署web应用到tomcat中，通过浏览器访问如下URL：       http://127.0.0.1:8080/springmvc-day01/hello.action05_自定义的spring.xml配置文件和逻辑视图名在默认情况下：springmvc框架的配置文件必须叫<servlet-name>-servlet.xml且必须放在/WEB-INF/目录下，我们可以在web.xml文件中，为DispatcherServlet配置一个初始化参数，让它去我们指定的目录下加载springmvc.xml配置文件，web.xml代码如下：package cn.itcast.javaee.springmvc.app07;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.web.servlet.ModelAndView;import org.springframework.web.servlet.mvc.Controller;/** * 单例 * 控制器Action * 处理器Action * @author AdminTC */public class HelloAction implements Controller{/** * 业务方法 */public ModelAndView handleRequest(HttpServletRequest request,HttpServletResponse response) throws Exception {ModelAndView modelAndView = new ModelAndView();modelAndView.addObject("message","这是我的第二个springmvc应用程序，视图使用逻辑名");//原来封装视图的真实路径//modelAndView.setViewName("/jsp/success.jsp");//现在封装视图的逻辑名称modelAndView.setViewName("success");return modelAndView;}}<?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:mvc="http://www.springframework.org/schema/mvc"      xsi:schemaLocation="  http://www.springframework.org/schema/beans   http://www.springframework.org/schema/beans/spring-beans-3.0.xsd          http://www.springframework.org/schema/mvc      http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd              ">          <!-- 注册Action(必须配置) -->      <bean name="/hello.action" class="cn.itcast.javaee.springmvc.app07.HelloAction"></bean>            <!--       如果Action中书写的是视图逻辑名称，那么视图解析器就必须配置       如果Action中书写的是视图真实名称，那么视图解析器就可选配置       -->      <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">      <!-- 路径前缀 -->      <property name="prefix" value="/jsp/"/>      <!-- 路径后缀 -->      <property name="suffix" value=".jsp"/>      <!-- 前缀+视图逻辑名+后缀=真实路径 -->      </bean>            </beans>      <!-- 注册springmvc框架核心控制器 --><servlet><servlet-name>DispatcherServlet</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param><param-name>contextConfigLocation</param-name><param-value>/WEB-INF/classes/cn/itcast/javaee/springmvc/config/springmvc.xml</param-value></init-param></servlet><servlet-mapping><servlet-name>DispatcherServlet</servlet-name><url-pattern>*.action</url-pattern></servlet-mapping>如果springmvc.xml配置文件放在src目录下，web.xml代码如下：<!-- 注册springmvc框架核心控制器 --><servlet><servlet-name>DispatcherServlet</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param><param-name>contextConfigLocation</param-name><param-value>classpath:spring.xml</param-value></init-param></servlet><servlet-mapping><servlet-name>DispatcherServlet</servlet-name><url-pattern>*.action</url-pattern></servlet-mapping>视图解析器InternalResourceViewResolver【解析视图逻辑名对应的真实路径】ModelAndView对象中即可以封装真实视图路径名，也可以封装视图路径的逻辑名，springmvc.xml代码如下：    <!-- 视图解析器(框架) -->      <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">    <property name="prefix" value="/jsp/"/>    <property name="suffix" value=".jsp"/>    </bean>Action类代码如下：modelAndView.setViewName("success");06_映射器_BeanNameUrlHanderMappingpackage cn.itcast.javaee.springmvc.app08;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.web.servlet.ModelAndView;import org.springframework.web.servlet.mvc.Controller;/** * 控制器 * @author AdminTC */public class UserAction implements Controller{public ModelAndView handleRequest(HttpServletRequest request,HttpServletResponse response) throws Exception {System.out.println("操作用户");ModelAndView modelAndView = new ModelAndView();modelAndView.addObject("message","操作用户成功");modelAndView.setViewName("success");return modelAndView;}}<?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:mvc="http://www.springframework.org/schema/mvc"      xsi:schemaLocation="  http://www.springframework.org/schema/beans   http://www.springframework.org/schema/beans/spring-beans-3.0.xsd          http://www.springframework.org/schema/mvc      http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd              ">  <!-- 注册Action -->  <bean id="userActionID" class="cn.itcast.javaee.springmvc.app08.UserAction"></bean>    <!-- 注册映射器     【适合】于将多个请求，映射到同一个Action   -->  <bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">  <property name="mappings">  <props>  <!-- key表示请求路径 -->  <prop key="/update.action">userActionID</prop>  <prop key="/delete.action">userActionID</prop>  <prop key="/find.action">userActionID</prop>  </props>  </property>  </bean>    <!-- 注册Action -->      <bean name="/add.action" class="cn.itcast.javaee.springmvc.app08.UserAction"></bean>  <!--         <bean name="/update.action" class="cn.itcast.javaee.springmvc.app08.UserAction"></bean>      <bean name="/delete.action" class="cn.itcast.javaee.springmvc.app08.UserAction"></bean>      <bean name="/find.action" class="cn.itcast.javaee.springmvc.app08.UserAction"></bean>      -->      <!-- 映射器 -->  <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"></bean>      <!-- 适配器 -->                  <!-- 视图解析器 -->  <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">  <property name="prefix" value="/jsp/"/>  <property name="suffix" value=".jsp"/> </beans>      1）org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping(核心)将程序员定义的Action所对应的<bean>标签的name属性作为请求路径      <!-- 注册控制器(程序员) -->      <bean name="/add.action" class="cn.itcast.javaee.springmvc.mapping.UserAction"></bean>      <!-- 注册映射器(handler包)(框架) -->  <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"></bean>2）org.springframework.web.servlet.handler.SimpleUrlHandlerMapping/delete.action和/update.action和/find.action请求路径都交由<bean>标签为id的Action，即多个路径对应同一个Action       <!-- 注册控制器(程序员) -->  <bean id="userActionID" class="cn.itcast.javaee.springmvc.mapping.UserAction"></bean>  <!-- 注册映射器(handler包)(框架) -->  <bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">  <property name="mappings">  <props>  <prop key="/delete.action">userActionID</prop>  <prop key="/update.action">userActionID</prop>  <prop key="/find.action">userActionID</prop>  </props>  </property>  </bean><%@ page language="java" pageEncoding="UTF-8"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>  <head>    <title>演示映射器</title>    <style type="text/css">    .no_underline{    text-decoration:none    }    </style>  </head>  <body><a href="${pageContext.request.contextPath}/add.action" class="no_underline">增加用户</a><br/><hr/><a href="${pageContext.request.contextPath}/update.action" class="no_underline" >修改用户</a><br/><a href="${pageContext.request.contextPath}/delete.action" class="no_underline" >删除用户</a><br/><a href="${pageContext.request.contextPath}/find.action" class="no_underline" >查询用户</a><br/>  </body></html>07_映射器_SimpleUrlHanderMapping

08_适配器_SimpleControllerHandlerAdapter1）Action实现Controller接口org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapterpublic class EmpAction implements Controller{public ModelAndView handleRequest(HttpServletRequest request,HttpServletResponse response) throws Exception {System.out.println("EmpAction::handleRequest");request.setCharacterEncoding("UTF-8");String username = request.getParameter("username");ModelAndView modelAndView = new ModelAndView();modelAndView.addObject("message",username);modelAndView.setViewName("/jsp/success.jsp");return modelAndView;}}package cn.itcast.javaee.springmvc.app09;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.web.servlet.ModelAndView;import org.springframework.web.servlet.mvc.Controller;/** * 控制器是实现Controller接口的类 * @author AdminTC */public class EmpAction implements Controller{public ModelAndView handleRequest(HttpServletRequest request,HttpServletResponse response) throws Exception {ModelAndView  modelAndView = new ModelAndView();//设置编码方式request.setCharacterEncoding("UTF-8");//获取员工姓名String username = request.getParameter("username");//显示System.out.println("员工姓名：" + username);//将员工姓名封装到ModelAndView对象中去modelAndView.addObject("message",username);//将真实路径名封装到ModelAndView对象中去modelAndView.setViewName("/jsp/success.jsp");return modelAndView;}}/** * 1)Action类实现Controller接口，带来了代码耦合 * 2)如果参数过多，实现Controller接口的Action收集起来不便 */<?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:mvc="http://www.springframework.org/schema/mvc"      xsi:schemaLocation="  http://www.springframework.org/schema/beans   http://www.springframework.org/schema/beans/spring-beans-3.0.xsd          http://www.springframework.org/schema/mvc      http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd              ">     <!-- EmpAction处理类 --><bean name="/add.action" class="cn.itcast.javaee.springmvc.app09.EmpAction"></bean>  <!-- 映射器(省) -->     <!-- 适配器 -->    <bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"></bean>       <!-- 视图解析器(省) -->      </beans>      <%@ page language="java" pageEncoding="UTF-8"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>  <head>    <title>演示适配器</title>  </head>  <body><form action="${pageContext.request.contextPath}/add.action" method="POST">员工姓名：<input type="text" name="username"/><input type="submit" value="提交"/></form>  </body></html>09_jsp到jsp的控制器_ParameterizableViewControllerpackage cn.itcast.javaee.springmvc.app10;import java.util.Date;/** * 员工 * @author AdminTC */public class Emp {private String username;//姓名private String gender;//性别private Date hiredate;//入职时间public Emp(){}public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public String getGender() {return gender;}public void setGender(String gender) {this.gender = gender;}public Date getHiredate() {return hiredate;}public void setHiredate(Date hiredate) {this.hiredate = hiredate;}}package cn.itcast.javaee.springmvc.app10;import java.text.SimpleDateFormat;import java.util.Date;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.beans.propertyeditors.CustomDateEditor;import org.springframework.validation.BindException;import org.springframework.web.bind.ServletRequestDataBinder;import org.springframework.web.servlet.ModelAndView;import org.springframework.web.servlet.mvc.AbstractCommandController;/** * 单例 * 处理类 * @author AdminTC */@SuppressWarnings("deprecation")public class EmpAction extends AbstractCommandController{public EmpAction(){//将表单参数封装到Emp对象中去this.setCommandClass(Emp.class);}/** * 自定义类型转换器，将String->Date类型(格式yyyy-MM-dd) */@Overrideprotected void initBinder(HttpServletRequest request,ServletRequestDataBinder binder) throws Exception {//向springmvc内部注入一个自定义的类型转换器//参数一：将String转成什么类型的字节码//参数二：自定义转换规则//true表示该日期字段可以为空binder.registerCustomEditor(Date.class,new CustomDateEditor(new SimpleDateFormat("yyyy-MM-dd"),true));}/** * obj表示封装后的实体 * error表示封装时产生的异常 */@Overrideprotected ModelAndView handle(HttpServletRequest request,HttpServletResponse response, Object obj, BindException error)throws Exception {ModelAndView modelAndView = new ModelAndView();modelAndView.addObject("message","增加员工成功");Emp emp = (Emp) obj;System.out.println(emp.getUsername()+":"+emp.getGender()+":"+emp.getHiredate().toLocaleString());//将Emp封装到ModeAndView对象中modelAndView.addObject("emp",emp);modelAndView.setViewName("/jsp/success.jsp");return modelAndView;}}<?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:mvc="http://www.springframework.org/schema/mvc"      xsi:schemaLocation="  http://www.springframework.org/schema/beans   http://www.springframework.org/schema/beans/spring-beans-3.0.xsd          http://www.springframework.org/schema/mvc      http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd    <!-- 专用于jsp到jsp/html的转发控制器 -->    <bean name="/index.action" class="org.springframework.web.servlet.mvc.ParameterizableViewController">    <!-- 转发到真实视图名 -->    <property name="viewName" value="/WEB-INF/05_index.jsp"/>    </bean><!-- 注册Action --><bean name="/add.action" class="cn.itcast.javaee.springmvc.app10.EmpAction"></bean><!-- 映射器 -->    <!-- 适配器(SimpleControllerHandlerAdapter去找实现了Controller接口的Action，           也能去找继承了AbstractCommandController类的Action，...)--><!-- 视图解析器 --></beans>      10_继承AbstractCommandController的Action1）org.springframework.web.servlet.mvc.AbstractCommandController能够以实体的形式，收集客户端参数public class AdminAction extends AbstractCommandController{public AdminAction(){this.setCommandClass(Admin.class);}@Overrideprotected ModelAndView handle(HttpServletRequest request,HttpServletResponse response, Object obj, BindException bindException)throws Exception {System.out.println("AdminAction::handle");ModelAndView modelAndView = new ModelAndView();Admin admin = null;if(obj instanceof Admin){admin = (Admin) obj;}modelAndView.addObject("username",admin.getUsername());modelAndView.addObject("gender",admin.getGender());modelAndView.addObject("hiredate",admin.getHiredate());modelAndView.setViewName("/jsp/success.jsp");return modelAndView;}}          <!-- 请求处理类 -->      <bean name="/add.action" class="cn.itcast.javaee.springmvc.controller.AdminAction">      </bean>            <!-- 映射器 -->  <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping">  </bean>1）org.springframework.web.servlet.mvc.AbstractCommandController能够以实体的形式，收集客户端参数public class AdminAction extends AbstractCommandController{public AdminAction(){this.setCommandClass(Admin.class);}@Overrideprotected ModelAndView handle(HttpServletRequest request,HttpServletResponse response, Object obj, BindException bindException)throws Exception {System.out.println("AdminAction::handle");ModelAndView modelAndView = new ModelAndView();Admin admin = null;if(obj instanceof Admin){admin = (Admin) obj;}modelAndView.addObject("username",admin.getUsername());modelAndView.addObject("gender",admin.getGender());modelAndView.addObject("hiredate",admin.getHiredate());modelAndView.setViewName("/jsp/success.jsp");return modelAndView;}}          <!-- 请求处理类 -->      <bean name="/add.action" class="cn.itcast.javaee.springmvc.controller.AdminAction">      </bean>            <!-- 映射器 -->  <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping">  </bean>日期转换器和编码过滤器1）在默认情况下，springmvc不能将String类型转成Date类型，必须自定义类型转换器public class AdminAction extends AbstractCommandController{@Overrideprotected void initBinder(HttpServletRequest request,ServletRequestDataBinder binder) throws Exception {binder.registerCustomEditor(Date.class,new CustomDateEditor(new SimpleDateFormat("yyyy-MM-dd"),true));}2）spring提供的，专用于解决POST提交中文乱码问题，需要在web.xml文件中配置<!-- 编码过滤器 --><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>第十二章 springmvc与struts2的区别1）springmvc的入口是一个servlet，即前端控制器，例如：*.action   struts2入口是一个filter过虑器，即前端过滤器，例如：/*2）springmvc是基于方法开发，传递参数是通过方法形参，可以设计为单例   struts2是基于类开发，传递参数是通过类的属性，只能设计为多例3）springmvc通过参数解析器是将request对象内容进行解析成方法形参，将响应数据和页面封装成   ModelAndView对象，最后又将模型数据通过request对象传输到页面struts采用值栈存储请求和响应的数据，通过OGNL存取数据   .. …