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

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

// 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

<?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

<%@ 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：

- (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