2.struts上传多个文件

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使用struts的标签库:

  <body><s:form action="/uploadList.action" enctype="multipart/form-data" method="post"><s:textfield label="文件名称" name="name"></s:textfield><s:file label="选择文件" name="upload"></s:file><s:file label="选择文件" name="upload"></s:file><s:file label="选择文件" name="upload"></s:file><s:submit value="上传"/></s:form>  </body>

记得加标签:

<%@ taglib uri="/struts-tags" prefix="s"%>

struts的配置文件:

<?xml version="1.0" encoding="GBK"?>    <!DOCTYPE struts PUBLIC        "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"        "http://struts.apache.org/dtds/struts-2.3.dtd">    <struts>  <constant name="struts.multipart.maxSize" value="409715200" />     <package name="struct2" extends="struts-default">       <action name="uploadList" class="struct2.uploadFile">             <result>../success.jsp</result>             <result name="input">../tagUpload.jsp</result>             <interceptor-ref name="fileUpload">                <param name="allowedTypes">image/bmp,image/x-png,image/gif</param>                 <param name="maximumSize">4M</param>             </interceptor-ref>              <interceptor-ref name="defaultStack"></interceptor-ref>         </action>               </package>  </struts>

<constant name="struts.multipart.maxSize" value="409715200" /> //修改默认的最大上传文件的限度<pre name="code" class="html"><param name="maximumSize">4M</param>//限定文件大小，大小不大于上面的

action的处理过程:

package struct2;import java.io.File;import java.io.IOException;import java.util.List;import org.apache.commons.io.FileUtils;import org.apache.struts2.ServletActionContext;import com.opensymphony.xwork2.ActionSupport;public class uploadFile extends ActionSupport {private static final long serialVersionUID = 1L;private String name;private List<File> upload;//文件集合private List<String> uploadContextType;//文件类型集合private List<String> uploadFileName;//上传文件的名称public String getName() {return name;}public void setName(String name) {this.name = name;}public List<File> getUpload() {return upload;}public void setUpload(List<File> upload) {this.upload = upload;}public List<String> getUploadContextType() {return uploadContextType;}public void setUploadContextType(List<String> uploadContextType) {this.uploadContextType = uploadContextType;}public List<String> getUploadFileName() {return uploadFileName;}public void setUploadFileName(List<String> uploadFileName) {this.uploadFileName = uploadFileName;}public String execute(){String path = ServletActionContext.getServletContext().getRealPath("/WEB-INF/uploadList");File file = new File(path);if(!file.exists()){file.mkdirs();//不存在时创建,养成好的习惯，每次检验文件呀是否存在(即使你已经创建)}for(int i=0;i<upload.size();i++){try {FileUtils.copyFile(upload.get(i), new File(file,uploadFileName.get(i)));  return SUCCESS;  } catch (IOException e) {e.printStackTrace();}}return null;}}

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