秀外慧中的springMVC(三)---文件的上传

1.web.xml配置

<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">  <display-name>SpringMvc</display-name>  <!-- 中央控制器 -->  <servlet>     <servlet-name>springmvc</servlet-name>     <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  </servlet>  <servlet-mapping>    <servlet-name>springmvc</servlet-name>    <url-pattern>*.do</url-pattern>  </servlet-mapping>  <!-- 过滤编码设置 -->   <filter>          <filter-name>SpringCharacterEncodingFilter</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>SpringCharacterEncodingFilter</filter-name>          <url-pattern>/*</url-pattern>      </filter-mapping>           <welcome-file-list>    <welcome-file>index.html</welcome-file>    <welcome-file>index.htm</welcome-file>    <welcome-file>index.jsp</welcome-file>  </welcome-file-list></web-app>

2.springmvc配置文件配置

<?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"xmlns:aop="http://www.springframework.org/schema/aop"xmlns:tx="http://www.springframework.org/schema/tx"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 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 ">        <!-- mvc注解驱动 当有扫描器时候component-scan此标签可以省略             <mvc:annotation-driven/>        -->        <!-- 扫描器 -->        <context:component-scan base-package="org.senssic.springmvc"></context:component-scan>    <!-- 定义ViewResolver --><bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">     <property name="prefix" value="/jsp/"/>     <property name="suffix" value=".jsp"/></bean><!-- 文件上传 解析器,其中multipartResolver为固定--><bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">   <!-- 上传文件的最大值，以byte为单位 -->    <property name="defaultEncoding" value="UTF-8"/>          <!-- 指定所上传文件的总大小不能超过200m。注意maxUploadSize属性的限制不是针对单个文件，而是所有文件的容量之和 -->              <property name="maxUploadSize" value="200000000"/> </bean>    <!-- SpringMVC在超出上传文件限制时，会抛出org.springframework.web.multipart.MaxUploadSizeExceededException -->      <!-- 该异常是SpringMVC在检查上传的文件信息时抛出来的，而且此时还没有进入到Controller方法中 -->      <bean id="exceptionResolver" class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">          <property name="exceptionMappings">              <props>                  <!-- 遇到MaxUploadSizeExceededException异常时，自动跳转到/WEB-INF/jsp/error_fileupload.jsp页面 -->                  <prop key="org.springframework.web.multipart.MaxUploadSizeExceededException">error_fileupload</prop>              </props>          </property>      </bean>  </beans>

3.上传controller类

package org.senssic.springmvc;import java.io.FileOutputStream;import java.io.OutputStream;import java.io.PrintWriter;import java.text.SimpleDateFormat;import java.util.Date;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestParam;import org.springframework.web.bind.annotation.SessionAttributes;import org.springframework.web.multipart.MultipartFile;@Controller// 多了一层路径/sen/xxx@RequestMapping("/sen")// 只要下面的方法中执行model.addAttribute("loginUser","jadyer")那么"loginUser"便被自动放到HttpSession@SessionAttributes("loginUser")public class MyController {@RequestMapping("/uploadFile.do")public void uploadFile(@RequestParam MultipartFile myfile,PrintWriter response) throws Exception {if (myfile.isEmpty()) {System.out.println("文件未上传");} else {System.out.println("文件长度: " + myfile.getSize());System.out.println("文件类型: " + myfile.getContentType());System.out.println("文件名称: " + myfile.getName());System.out.println("文件原名: " + myfile.getOriginalFilename());System.out.println("========================================");byte[] bfile = myfile.getBytes();String filename = "";SimpleDateFormat sFormat = new SimpleDateFormat("yyyyMMddHHmmssSSS");filename = sFormat.format(new Date());String origFileName = myfile.getOriginalFilename();System.out.println(origFileName);String suffix = origFileName.substring(origFileName.lastIndexOf("."));filename = filename + suffix;OutputStream oStream = new FileOutputStream("d:\\" + filename);oStream.write(bfile);oStream.close();}}}

4.上传文件的页面

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Insert title here</title></head><body>    <form action="<%=request.getContextPath()%>/sen/uploadFile.do" method="post"          enctype="multipart/form-data">          <p>              选择文件:<input type="file" name="myfile">          <p>                   <input type="submit" value="提交">      </form> </body></html>

5.多文件上传：

我在刚才那样上传过个文件时候只能上传一个文件

下面是多文件上传的代码

@RequestMapping("/uploadFile.do")public void uploadFile(String username[], HttpServletRequest hRequest,PrintWriter response) throws Exception {MultipartHttpServletRequest rm = (MultipartHttpServletRequest) hRequest;// 获得文件List<MultipartFile> cfile = rm.getFiles("files");System.out.println(cfile.size() + "名字：" + username[1] + "---"+ username[0] + hRequest.getParameter("files"));for (MultipartFile myfile : cfile) {if (myfile.isEmpty()) {System.out.println("文件未上传");} else {System.out.println("文件长度: " + myfile.getSize());System.out.println("文件类型: " + myfile.getContentType());System.out.println("文件名称: " + myfile.getName());System.out.println("文件原名: " + myfile.getOriginalFilename());System.out.println("========================================");byte[] bfile = myfile.getBytes();String filename = "";SimpleDateFormat sFormat = new SimpleDateFormat("yyyyMMddHHmmssSSS");filename = sFormat.format(new Date());String origFileName = myfile.getOriginalFilename();System.out.println(origFileName);String suffix = origFileName.substring(origFileName.lastIndexOf("."));filename = filename + suffix;OutputStream oStream = new FileOutputStream("d:\\" + filename);oStream.write(bfile);oStream.close();}}}

页面代码：

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Insert title here</title></head><body>    <form action="<%=request.getContextPath()%>/sen/uploadFile.do" method="post"          enctype="multipart/form-data">          <input name="username" type="text">        <input name="username" type="text">        <p>              选择文件:<input type="file" name="files">          <p>              选择文件:<input type="file" name="files">          <p>              选择文件:<input type="file" name="files">          <p>              <input type="submit" value="提交">      </form> </body></html>