Springmvc框架-文件上传-单文件上传

需求：在添加用户信息的时候，非必须上传个人免冠照。

编写文件上传的时候，要提交的表单必须是method="POST"  enctype="multipart/form-data";

这是文件上传的思路：

 

 　　

下面是文件上传的代码：

UserDaoImpl.java

 

UserServiceImpl.java

 

+ View Code?

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package cn.smbms.service.user;   import java.sql.Connection; import java.sql.SQLException; import java.util.List; import javax.annotation.Resource; import org.springframework.stereotype.Service; import cn.smbms.dao.BaseDao; import cn.smbms.dao.user.UserDao; import cn.smbms.pojo.User;   /**  * service层捕获异常，进行事务处理  * 事务处理：调用不同dao的多个方法，必须使用同一个connection（connection作为参数传递）  * 事务完成之后，需要在service层进行connection的关闭，在dao层关闭（PreparedStatement和ResultSet对象）  * @author Administrator  *  */ @Service public class UserServiceImpl implements UserService{     @Resource     private UserDao userDao;           @Override     public boolean add(User user) {         // TODO Auto-generated method stub                   boolean flag = false;         Connection connection = null;         try {             connection = BaseDao.getConnection();             connection.setAutoCommit(false);//开启JDBC事务管理             int updateRows = userDao.add(connection,user);             connection.commit();             if(updateRows > 0){                 flag = true;                 System.out.println("add success!");             }else{                 System.out.println("add failed!");             }                       } catch (Exception e) {             // TODO Auto-generated catch block             e.printStackTrace();             try {                 System.out.println("rollback==================");                 connection.rollback();             } catch (SQLException e1) {                 // TODO Auto-generated catch block                 e1.printStackTrace();             }         }finally{             //在service层进行connection连接的关闭             BaseDao.closeResource(connection, null, null);         }         return flag;     }     @Override     public User login(String userCode, String userPassword) {         // TODO Auto-generated method stub         Connection connection = null;         User user = null;         try {             connection = BaseDao.getConnection();             user = userDao.getLoginUser(connection, userCode);         } catch (Exception e) {             // TODO Auto-generated catch block             e.printStackTrace();         }finally{             BaseDao.closeResource(connection, null, null);         }                   //匹配密码         if(null != user){             if(!user.getUserPassword().equals(userPassword))                 user = null;         }                   return user;     }     @Override     public List<User> getUserList(String queryUserName,int queryUserRole,int currentPageNo, int pageSize) {         // TODO Auto-generated method stub         Connection connection = null;         List<User> userList = null;         System.out.println("queryUserName ---- > " + queryUserName);         System.out.println("queryUserRole ---- > " + queryUserRole);         System.out.println("currentPageNo ---- > " + currentPageNo);         System.out.println("pageSize ---- > " + pageSize);         try {             connection = BaseDao.getConnection();             userList = userDao.getUserList(connection, queryUserName,queryUserRole,currentPageNo,pageSize);         } catch (Exception e) {             // TODO Auto-generated catch block             e.printStackTrace();         }finally{             BaseDao.closeResource(connection, null, null);         }         return userList;     }     @Override     public User selectUserCodeExist(String userCode) {         // TODO Auto-generated method stub         Connection connection = null;         User user = null;         try {             connection = BaseDao.getConnection();             user = userDao.getLoginUser(connection, userCode);         } catch (Exception e) {             // TODO Auto-generated catch block             e.printStackTrace();         }finally{             BaseDao.closeResource(connection, null, null);         }         return user;     }     @Override     public boolean deleteUserById(Integer delId) {         // TODO Auto-generated method stub         Connection connection = null;         boolean flag = false;         try {             connection = BaseDao.getConnection();             if(userDao.deleteUserById(connection,delId) > 0)                 flag = true;         } catch (Exception e) {             // TODO Auto-generated catch block             e.printStackTrace();         }finally{             BaseDao.closeResource(connection, null, null);         }         return flag;     }     @Override     public User getUserById(String id) {         // TODO Auto-generated method stub         User user = null;         Connection connection = null;         try{             connection = BaseDao.getConnection();             user = userDao.getUserById(connection,id);         }catch (Exception e) {             // TODO: handle exception             e.printStackTrace();             user = null;         }finally{             BaseDao.closeResource(connection, null, null);         }         return user;     }     @Override     public boolean modify(User user) {         // TODO Auto-generated method stub         Connection connection = null;         boolean flag = false;         try {             connection = BaseDao.getConnection();             if(userDao.modify(connection,user) > 0)                 flag = true;         } catch (Exception e) {             // TODO Auto-generated catch block             e.printStackTrace();         }finally{             BaseDao.closeResource(connection, null, null);         }         return flag;     }     @Override     public boolean updatePwd(int id, String pwd) {         // TODO Auto-generated method stub         boolean flag = false;         Connection connection = null;         try{             connection = BaseDao.getConnection();             if(userDao.updatePwd(connection,id,pwd) > 0)                 flag = true;         }catch (Exception e) {             // TODO: handle exception             e.printStackTrace();         }finally{             BaseDao.closeResource(connection, null, null);         }         return flag;     }     @Override     public int getUserCount(String queryUserName, int queryUserRole) {         // TODO Auto-generated method stub         Connection connection = null;         int count = 0;         System.out.println("queryUserName ---- > " + queryUserName);         System.out.println("queryUserRole ---- > " + queryUserRole);         try {             connection = BaseDao.getConnection();             count = userDao.getUserCount(connection, queryUserName,queryUserRole);         } catch (Exception e) {             // TODO Auto-generated catch block             e.printStackTrace();         }finally{             BaseDao.closeResource(connection, null, null);         }         return count;     }       }

 

　　

 

UserController.java

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// 其中request对象主要用来存放错误信息，便于前台获取进行相应的提示     @RequestMapping(value = "/useraddsave.html", method = RequestMethod.POST)     public String addUserSave(             User user,             HttpSession session,             HttpServletRequest request,             @RequestParam(value = "a_idPicPath", required = false) MultipartFile attach) {         // 编写文件上传的代码         // 1.判断上传的文件是否为空         String idPicPath = null;         // 如果上传的文件不为空 与系统有关的默认名称分隔符。此字段被初始化为包含系统属性 file.separator 的值的第一个字符。在         // UNIX 系统上，此字段的值为 '/'；在 Microsoft Windows 系统上，它为 '\\'。         if (!attach.isEmpty()) {             String path = request.getSession().getServletContext()                     .getRealPath("statics" + File.separator + "uploadfiles");             logger.info("uploadFile path ============== > " + path);             String oldFileName = attach.getOriginalFilename();// 原来你存在电脑盘符的文件名             logger.info("原来的文件名 ============== > " + oldFileName);             String prefix = FilenameUtils.getExtension(oldFileName);             logger.info("上传文件的后缀：" + prefix);             int filesize = 500000;// 表示文件大小是500k             if (attach.getSize() > filesize) {                 request.setAttribute("uploadFileError", "上传的文件大小不得超过500k");                 return "useradd";                 // 判断文件的上传文件的格式             } else if (prefix.equalsIgnoreCase("jpg")                     || prefix.equalsIgnoreCase("png")                     || prefix.equalsIgnoreCase("pneg")) {                 String fileName = System.currentTimeMillis()                         + RandomUtils.nextInt(10000000) + "Personal.jpg";                 logger.debug("new fileName======== " + attach.getName());                 File targetFile = new File(path, fileName);                 logger.info("上传到服务器的文件名是：" + targetFile.toString());                 // 如果服务器的文件路径存在的话，就进行创建                 if (!targetFile.exists()) {                     /*                      * mkdirs()可以建立多级文件夹， mkdir()只会建立一级的文件夹， 如下：                      * new File("/tmp/one/two/three").mkdirs();                      * 执行后， 会建立tmp/one/two/three四级目录                      * new File("/tmp/one/two/three").mkdir();                      * 则不会建立任何目录， 因为找不到/tmp/one/two目录， 结果返回false                      */                     targetFile.mkdirs();                 }                 try {                     attach.transferTo(targetFile);                 } catch (Exception e) {                     // TODO Auto-generated catch block                     e.printStackTrace();                     request.setAttribute("uploadFileError", "上传文件失败");                     return "useradd";                 }                 idPicPath = path + File.separator + fileName;             }         } else {             request.setAttribute("uploadFileError", " * 上传图片格式不正确");             return "useradd";         }         user.setCreatedBy(((User) session.getAttribute(Constants.USER_SESSION))                 .getId());         user.setCreationDate(new Date());         user.setIdPicPath(idPicPath);           if (userService.add(user)) {             return "redirect:/user/userlist.html";         }         return "useradd";       }

修改Spring-servlet.xml文件

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<?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: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.xsd         http://www.springframework.org/schema/context         http://www.springframework.org/schema/context/spring-context.xsd         http://www.springframework.org/schema/mvc         http://www.springframework.org/schema/mvc/spring-mvc.xsd">               <context:component-scan base-package="cn.smbms.controller"/>        <mvc:annotation-driven/>           <mvc:resources mapping="/statics/**" location="/statics/" />     <!-- 完成视图的对应 -->     <!-- 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="/WEB-INF/jsp/"/>         <property name="suffix" value=".jsp"/>     </bean>           <!--  全局异常处理 -->     <bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">         <property name="exceptionMappings">             <props>                 <prop key="java.lang.RuntimeException">error</prop>             </props>         </property>     </bean>           <!--配置MultipartResolver,用于文件上传  -->     <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">         <property name="maxUploadSize" value="5000000"></property>         <property name="defaultEncoding" value="UTF-8"></property>     </bean>       </beans>

　　useradd.jsp

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<%@ page language="java" contentType="text/html; charset=UTF-8"     pageEncoding="UTF-8"%> <%@include file="/WEB-INF/jsp/common/head.jsp"%>   <div class="right">         <div class="location">             <strong>你现在所在的位置是:</strong>             <span>用户管理页面 >> 用户添加页面</span>         </div>         <div class="providerAdd">             <form id="userForm" name="userForm" method="post" action="${pageContext.request.contextPath }/user/useraddsave.html" enctype="multipart/form-data">                 <input type="hidden" name="method" value="add">                 <!--div的class 为error是验证错误，ok是验证成功-->                 <div>                     <label for="userCode">用户编码：</label>                     <input type="text" name="userCode" id="userCode" value="">                     <!-- 放置提示信息 -->                     <font color="red"></font>                 </div>                 <div>                     <label for="userName">用户名称：</label>                     <input type="text" name="userName" id="userName" value="">                     <font color="red"></font>                 </div>                 <div>                     <label for="userPassword">用户密码：</label>                     <input type="password" name="userPassword" id="userPassword" value="">                     <font color="red"></font>                 </div>                 <div>                     <label for="ruserPassword">确认密码：</label>                     <input type="password" name="ruserPassword" id="ruserPassword" value="">                     <font color="red"></font>                 </div>                 <div>                     <label >用户性别：</label>                     <select name="gender" id="gender">                         <option value="1" selected="selected">男</option>                         <option value="2">女</option>                      </select>                 </div>                 <div>                     <label for="birthday">出生日期：</label>                     <input type="text" Class="Wdate" id="birthday" name="birthday"                     readonly="readonly" onclick="WdatePicker();">                     <font color="red"></font>                 </div>                 <div>                     <label for="phone">用户电话：</label>                     <input type="text" name="phone" id="phone" value="">                     <font color="red"></font>                 </div>                     <div>                     <input type="hidden" id="errorinfo" value="${uploadFileError }"/>                     <label for="a_idPicPath">证件照：</label>                     <input type="file" name="a_idPicPath" id="a_idPicPath">                     <font color="red"></font>                 </div>                 <div>                     <label for="address">用户地址：</label>                    <input name="address" id="address"  value="">                 </div>                 <div>                     <label >用户角色：</label>                     <!-- 列出所有的角色分类 -->             <!-- <select name="userRole" id="userRole"></select> -->             <select name="userRole" id="userRole">             <option value="1">系统管理员</option>             <option value="2">经理</option>             <option value="3" selected="selected">普通用户</option>             </select>                 <font color="red"></font>                 </div>                 <div class="providerAddBtn">                     <input type="button" name="add" id="add" value="保存" >                     <input type="button" id="back" name="back" value="返回" >                 </div>             </form>         </div> </div> </section> <%@include file="/WEB-INF/jsp/common/foot.jsp" %> <script type="text/javascript" src="${pageContext.request.contextPath }/statics/js/useradd.js"></script>

　　useradd.js

 

 运行结果：

 

 运行日志：

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- (72410 ms) - 2020-1-29 21:09:19[DEBUG](DispatcherServlet.java:819) DispatcherServlet with name 'springmvc' processing POST request for [/SMBMS_C11_01/user/useraddsave.html] - (72931 ms) - 2020-1-29 21:09:19[DEBUG](CommonsFileUploadSupport.java:259) Found multipart file [a_idPicPath] of size 33326 bytes with original filename [sunFlower.jpg], stored at [D:\SoftWare\tomcat\apache-tomcat-6.0.53\work\Catalina\localhost\SMBMS_C11_01\upload__20c85c57_16ff16b9d67__8000_00000008.tmp] - (72934 ms) - 2020-1-29 21:09:19[DEBUG](AbstractHandlerMethodMapping.java:229) Looking up handler method for path /user/useraddsave.html - (72935 ms) - 2020-1-29 21:09:19[DEBUG](AbstractHandlerMethodMapping.java:234) Returning handler method [public java.lang.String cn.smbms.controller.UserController.addUserSave(cn.smbms.pojo.User,javax.servlet.http.HttpSession,javax.servlet.http.HttpServletRequest,org.springframework.web.multipart.MultipartFile)] - (72935 ms) - 2020-1-29 21:09:19[DEBUG](AbstractBeanFactory.java:243) Returning cached instance of singleton bean 'userController' - (72956 ms) - 2020-1-29 21:09:19[ INFO](UserController.java:193) uploadFile path ============== > D:\SoftWare\tomcat\apache-tomcat-6.0.53\webapps\SMBMS_C11_01\statics\uploadfiles - (72956 ms) - 2020-1-29 21:09:19[ INFO](UserController.java:195) 原来的文件名 ============== > sunFlower.jpg - (72958 ms) - 2020-1-29 21:09:19[ INFO](UserController.java:197) 上传文件的后缀：jpg - (72961 ms) - 2020-1-29 21:09:19[DEBUG](UserController.java:208) new fileName======== a_idPicPath - (72961 ms) - 2020-1-29 21:09:19[ INFO](UserController.java:210) 上传到服务器的文件名是：D:\SoftWare\tomcat\apache-tomcat-6.0.53\webapps\SMBMS_C11_01\statics\uploadfiles\1580307319502Personal.jpg - (72968 ms) - 2020-1-29 21:09:19[DEBUG](CommonsMultipartFile.java:139) Multipart file 'a_idPicPath' with original filename [sunFlower.jpg], stored at [D:\SoftWare\tomcat\apache-tomcat-6.0.53\work\Catalina\localhost\SMBMS_C11_01\upload__20c85c57_16ff16b9d67__8000_00000008.tmp]: moved to [D:\SoftWare\tomcat\apache-tomcat-6.0.53\webapps\SMBMS_C11_01\statics\uploadfiles\1580307319502Personal.jpg] add success! - (72995 ms) - 2020-1-29 21:09:19[DEBUG](AbstractAutowireCapableBeanFactory.java:1557) Invoking afterPropertiesSet() on bean with name 'redirect:/user/userlist.html' - (72995 ms) - 2020-1-29 21:09:19[DEBUG](DispatcherServlet.java:1198) Rendering view [org.springframework.web.servlet.view.RedirectView: name 'redirect:/user/userlist.html'; URL [/user/userlist.html]] in DispatcherServlet with name 'springmvc' - (72995 ms) - 2020-1-29 21:09:19[DEBUG](CommonsFileUploadSupport.java:282) Cleaning up multipart file [a_idPicPath] with original filename [sunFlower.jpg], stored at [D:\SoftWare\tomcat\apache-tomcat-6.0.53\work\Catalina\localhost\SMBMS_C11_01\upload__20c85c57_16ff16b9d67__8000_00000008.tmp] - (72995 ms) - 2020-1-29 21:09:19[DEBUG](FrameworkServlet.java:983) Successfully completed request - (73000 ms) - 2020-1-29 21:09:19[DEBUG](DispatcherServlet.java:819) DispatcherServlet with name 'springmvc' processing GET request for [/SMBMS_C11_01/user/userlist.html] - (73000 ms) - 2020-1-29 21:09:19[DEBUG](AbstractHandlerMethodMapping.java:229) Looking up handler method for path /user/userlist.html - (73000 ms) - 2020-1-29 21:09:19[DEBUG](AbstractHandlerMethodMapping.java:234) Returning handler method [public java.lang.String cn.smbms.controller.UserController.getUserList(org.springframework.ui.Model,java.lang.String,java.lang.String,java.lang.String)] - (73000 ms) - 2020-1-29 21:09:19[DEBUG](AbstractBeanFactory.java:243) Returning cached instance of singleton bean 'userController' - (73000 ms) - 2020-1-29 21:09:19[DEBUG](DispatcherServlet.java:906) Last-Modified value for [/SMBMS_C11_01/user/userlist.html] is: -1 - (73001 ms) - 2020-1-29 21:09:19[ INFO](UserController.java:109) getUserList ---- > queryUserName: null - (73001 ms) - 2020-1-29 21:09:19[ INFO](UserController.java:110) getUserList ---- > queryUserRole: null - (73001 ms) - 2020-1-29 21:09:19[ INFO](UserController.java:111) getUserList ---- > pageIndex: null queryUserName ---- > queryUserRole ---- > 0 sql ----> select count(1) as count from smbms_user u,smbms_role r where u.userRole = r.id queryUserName ---- > queryUserRole ---- > 0 currentPageNo ---- > 1 pageSize ---- > 5 sql ----> select u.*,r.roleName as userRoleName from smbms_user u,smbms_role r where u.userRole = r.id order by creationDate DESC limit ?,? - (73023 ms) - 2020-1-29 21:09:19[DEBUG](DispatcherServlet.java:1198) Rendering view [org.springframework.web.servlet.view.JstlView: name 'userlist'; URL [/WEB-INF/jsp/userlist.jsp]] in DispatcherServlet with name 'springmvc' - (73023 ms) - 2020-1-29 21:09:19[DEBUG](AbstractView.java:375) Added model object 'userList' of type [java.util.ArrayList] to request in view with name 'userlist' - (73023 ms) - 2020-1-29 21:09:19[DEBUG](AbstractView.java:375) Added model object 'roleList' of type [java.util.ArrayList] to request in view with name 'userlist' - (73023 ms) - 2020-1-29 21:09:19[DEBUG](AbstractView.java:375) Added model object 'queryUserName' of type [java.lang.String] to request in view with name 'userlist' - (73024 ms) - 2020-1-29 21:09:19[DEBUG](AbstractView.java:382) Removed model object 'queryUserRole' from request in view with name 'userlist' - (73024 ms) - 2020-1-29 21:09:19[DEBUG](AbstractView.java:375) Added model object 'totalPageCount' of type [java.lang.Integer] to request in view with name 'userlist' - (73024 ms) - 2020-1-29 21:09:19[DEBUG](AbstractView.java:375) Added model object 'totalCount' of type [java.lang.Integer] to request in view with name 'userlist' - (73024 ms) - 2020-1-29 21:09:19[DEBUG](AbstractView.java:375) Added model object 'currentPageNo' of type [java.lang.Integer] to request in view with name 'userlist' - (73024 ms) - 2020-1-29 21:09:19[DEBUG](InternalResourceView.java:236) Forwarding to resource [/WEB-INF/jsp/userlist.jsp] in InternalResourceView 'userlist' - (73030 ms) - 2020-1-29 21:09:19[DEBUG](FrameworkServlet.java:983) Successfully completed request