springmvc+spring框架

jar包

 com.springsource.javax.validation-1.0.0.GA.jar
 com.springsource.org.aopalliance-1.0.0.jar
 com.springsource.org.apache.commons.logging-1.1.1.jar
 commons-fileupload-1.2.2.jar
 commons-io-2.0.1.jar
 hibernate-validator-4.1.0.Final.jar
 jstl.jar
 log4j.jar
 slf4j-api-1.5.8.jar
 slf4j-log4j12.jar
 spring-aop-3.2.2.jar
 spring-aspects-3.2.2.jar
 spring-beans-3.2.2.jar
 spring-context-3.2.2.jar
 spring-context-support-3.2.2.jar
 spring-core-3.2.2.jar
 spring-expression-3.2.2.jar
 spring-tx-3.2.2.jar
 spring-web-3.2.2.jar
 spring-webmvc-3.2.2.jar
 standard.jar

web.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <web-app version="2.5"
     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_2_5.xsd">

     <context-param>
         <param-name>contextConfigLocation</param-name>
         <param-value>classpath:beans.xml</param-value>
     </context-param>
     <listener>
         <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
     </listener>

     <servlet>
         <servlet-name>action</servlet-name>
         <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
         <init-param>
             <param-name>contextConfigLocation</param-name>
             <param-value>classpath:spring-mvc.xml</param-value>
         </init-param>
         <load-on-startup>1</load-on-startup>
     </servlet>

     <servlet-mapping>
         <servlet-name>action</servlet-name>
         <url-pattern>/</url-pattern>
     </servlet-mapping>

   <welcome-file-list>
     <welcome-file>index.jsp</welcome-file>
   </welcome-file-list>
 </web-app>

beans.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:mvc="http://www.springframework.org/schema/mvc"
     xmlns:context="http://www.springframework.org/schema/context"
     xsi:schemaLocation="http://www.springframework.org/schema/beans
             http://www.springframework.org/schema/beans/spring-beans-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/context
             http://www.springframework.org/schema/context/spring-context-3.2.xsd ">

     <!-- 自动扫描 -->
     <context:component-scan base-package="cn.itcast.springmvc.service"/>

 </beans>

spring-mvc.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:mvc="http://www.springframework.org/schema/mvc"
     xmlns:context="http://www.springframework.org/schema/context"
     xsi:schemaLocation="http://www.springframework.org/schema/beans
             http://www.springframework.org/schema/beans/spring-beans-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/context
             http://www.springframework.org/schema/context/spring-context-3.2.xsd ">

     <!-- 自动扫描 -->
     <context:component-scan base-package="cn.itcast.springmvc.web.controller"/>

     <!-- 注解驱动 -->
     <mvc:annotation-driven/>

     <!-- 资源管理 -->
     <mvc:resources location="/resources/" mapping="/resources/**"/>
     <mvc:resources location="/upload/" mapping="/upload/**"/>

     <!-- 上传文件解析器 -->
     <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
         <property name="maxUploadSize" value="10485670"/> <!-- 10M -->
     </bean>

     <!-- 内部资源视图解析器  prefix + logicName + suffix /WEB-INF/jsps/ + index + .jsp-->
     <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
         <!-- 前缀 -->
         <property name="prefix" value="/WEB-INF/jsps/"/>
         <!-- 后缀 -->
         <property name="suffix" value=".jsp"/>
     </bean>

 </beans>

HomeController.java

 package cn.itcast.springmvc.web.controller;

 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;

 @Controller
 public class HomeController {

     @RequestMapping(value={"/","/home.action"})
     public String goHome(){
         System.out.println("Brave New World!");

         return "index";
     }
 }

PersonController.java

 package cn.itcast.springmvc.web.controller;

 import java.io.File;
 import java.io.IOException;
 import java.util.List;
 import java.util.Map;

 import javax.annotation.Resource;
 import javax.servlet.ServletContext;
 import javax.servlet.http.HttpServletRequest;
 import javax.validation.Valid;

 import org.apache.commons.io.FileUtils;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
 import org.springframework.validation.BindingResult;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestMethod;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.multipart.MultipartFile;

 import cn.itcast.springmvc.domain.Person;
 import cn.itcast.springmvc.service.PersonService;

 @Controller
 @RequestMapping("/person")
 public class PersonController {

     @Resource
     private PersonService ps;

     //列表
     @RequestMapping("/listAll")
     public String listAll(Map<String,Object> model){
         List<Person> personList = ps.listAll();
         model.put("personList", personList);

         System.out.println(" listall hello");

         return "person/jPersonList";
     }

     //列表
     @RequestMapping("/listAllOther")
     public String listAllOther(Model model){
         List<Person> personList1 = ps.listAll();
         model.addAttribute(personList1);

         System.out.println(" listallother1 hello");

         return "person/jPersonList";
     }

     //转向新增页面
     @RequestMapping(value={"/tocreate"},method=RequestMethod.GET)
     public String tocreate(){

         return "person/jPersonCreate";
     }

     //转向修改页面
     @RequestMapping("/toupdate")
     public String toupdate(Integer id, Model model){
         Person p = ps.get(id);
         model.addAttribute(p);

         return "person/jPersonUpdate";
     }

     //保存
     @RequestMapping("/saveOrUpdate")
     public String saveOrUpdate(  HttpServletRequest request,@Valid Person p, BindingResult br, MultipartFile photo) throws IOException{
         //错误处理
         if(br.hasErrors()){
             return "/person/jPersonUpdate";
         }

         //上传图片
         ServletContext sc = request.getSession().getServletContext();
         String dir = sc.getRealPath("/upload/");
         String fileName = photo.getOriginalFilename();

         //防止图片覆盖
         Long _l = System.nanoTime();
         String _extName = fileName.substring(fileName.indexOf("."));
         fileName = _l + _extName;

         FileUtils.writeByteArrayToFile(new File(dir, fileName), photo.getBytes());

         p.setPhotoPath("/upload/"+fileName);        //指定图片保存路径

         ps.save(p);
         return "redirect:/person/listAll";
     }

     //删除
     @RequestMapping("/delete")
     public String delete(@RequestParam("delId")Integer id){
         ps.deleteById(id);
         return "redirect:/person/listAll";
     }
 }

PersonService.java

 package cn.itcast.springmvc.service;

 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;

 import org.springframework.stereotype.Service;

 import cn.itcast.springmvc.domain.Person;

 @Service
 public class PersonService {
     //初始化信息
     private static Integer id = 0;
     private static Map<Integer,Person> map = new HashMap<Integer,Person>();
     static{
         Person p = null;
         for(int i=0;i<10;i++){
             p = new Person();

             p.setId(id);
             p.setName("tony"+i);
             p.setAge(20+i);

             map.put(p.getId(), p);

             id++;
         }
     }

     //列表
     public List<Person> listAll(){
         return new ArrayList(map.values());
     }

     //获取对象
     public Person get(Integer id){
         return map.get(id);
     }

     //保存
     public void save(Person p){
         if(p.getId()==null){
             id++;
             p.setId(id);
         }
         map.put(p.getId(), p);
     }

     //删除
     public void deleteById(Integer id){
         map.remove(id);
     }

 }

Person.java

 package cn.itcast.springmvc.domain;

 import javax.validation.constraints.NotNull;
 import javax.validation.constraints.Size;

 public class Person {
     private Integer id;
     public Integer getId() {
         return id;
     }
     public void setId(Integer id) {
         this.id = id;
     }
     public String getName() {
         return name;
     }
     public void setName(String name) {
         this.name = name;
     }
     public Integer getAge() {
         return age;
     }
     public void setAge(Integer age) {
         this.age = age;
     }
     @Size(min=3,max=10,message="用户名必须为3到10个字符!")
     private String name;
     @NotNull(message="年龄必须填写!")
     private Integer age;
     private String photoPath;
     public String getPhotoPath() {
         return photoPath;
     }
     public void setPhotoPath(String photoPath) {
         this.photoPath = photoPath;
     }
 }

WEB-INF下的jsps文件夹下

jPersonList.jsp

 <%@ page language="java" pageEncoding="UTF-8"%>
 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
 <html>
   <head>
     <title>My JSP 'index.jsp' starting page</title>
   </head>

   <body>
 <h2>用户列表</h2>

         <div style="padding:10px;"><a href="${pageContext.request.contextPath}/person/tocreate.action">新增</a></div>

 <table border="1">
 <tr>
     <td>photo</td>
     <td>id</td>
     <td>name</td>
     <td>age</td>
     <td>操作</td>
 </tr>

 <c:forEach items="${personList}" var="p">
 <tr>
     <td><img src="${pageContext.request.contextPath}${p.photoPath}"/></td>
     <td>${p.id}</td>
     <td>${p.name}</td>
     <td>${p.age}</td>
     <td>
         <a href="${pageContext.request.contextPath}/person/toupdate.action?id=${p.id}">修改</a>
         <a href="${pageContext.request.contextPath}/person/delete.action?delId=${p.id}">删除</a>
     </td>
 </tr>
 </c:forEach>

 </table>
   </body>
 </html>

jPersonCreate.jsp

 <%@ page language="java" pageEncoding="UTF-8"%>
 <html>
   <head>
     <title>My JSP 'index.jsp' starting page</title>
   </head>

   <body>
 <form action="${pageContext.request.contextPath}/person/saveOrUpdate.action" method="post" enctype="multipart/form-data">
      <h2>新增用户</h2>
 <table>
 <tr>
     <td>id:</td>
     <td><input type="text" name="id"/></td>
 </tr>
 <tr>
     <td>name:</td>
     <td><input type="text" name="name"/></td>
 </tr>
 <tr>
     <td>age:</td>
     <td><input type="text" name="age"/></td>
 </tr>
 <tr>
     <td>photo:</td>
     <td><input type="file" name="photoPathxx"/></td>
 </tr>
 <tr>
     <td colspan="2">
         <input type="submit"/>
     </td>
 </tr>
 </table>

 </form>
   </body>
 </html>

jPersonUpdate.jsp

 <%@ page language="java" pageEncoding="UTF-8"%>

 <%@ taglib uri="http://www.springframework.org/tags/form" prefix="sf"%>
 <html>
   <head>
     <title>My JSP 'index.jsp' starting page</title>
   </head>

   <body>
 <sf:form id="p" action="saveOrUpdate"
     method="post"
     enctype="multipart/form-data"
     modelAttribute="person">

 <h2>修改用户</h2>

 <table border="1">
 <tr>
     <td>id:</td>
     <td><sf:input path="id"/></td>
 </tr>
 <tr>
     <td>name:</td>
     <td><sf:input path="name"/><sf:errors path="name"/></td>
 </tr>
 <tr>
     <td>age:</td>
     <td><sf:input path="age"/><sf:errors path="age"/></td>
 </tr>
 <tr>
     <td>photo:</td>
     <td><input type="file" name="photo"/></td>
 </tr>
 <tr>
     <td><input type="submit"/></td>
 </tr>

 </table>

 </sf:form>
   </body>
 </html>

index.jsp

 <%@ page language="java" pageEncoding="UTF-8"%>
 <html>
   <head>
     <title>My JSP 'index.jsp' starting page</title>
   </head>

   <body>
    <img src="${pageContext.request.contextPath}/resources/girl.jpg"><br/>
     This is my JSP page. spring MVC Brave New World!<br/>
   </body>
 </html>