1.jsp页面设计uploadfileup.jsp
<%@ page language="java" contentType="text/html; charset=GB18030" pageEncoding="GB18030"%> <%@ taglib prefix="s" uri="/struts-tags" %> <!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=GB18030"> <title>Insert title here</title> <script type="text/javascript"> function addMore() { var td = document.getElementById("more"); var br = document.createElement("br"); var input = document.createElement("input"); var button = document.createElement("input"); input.type = "file"; input.name = "file"; button.type = "button"; button.value = "Remove"; button.onclick = function() { td.removeChild(br); td.removeChild(input); td.removeChild(button); } td.appendChild(br); td.appendChild(input); td.appendChild(button); } </script> </head> <body> <table align="center" width="50%"> <tr> <td> <s:fielderror cssStyle="color:red" /> </td> </tr> </table> <s:form action="upload" theme="simple" enctype="multipart/form-data"> <table align="center" width="50%" border="1"> <tr> <td> username </td> <td> <s:textfield name="username"></s:textfield> </td> </tr> <tr> <td> password </td> <td> <s:password name="password"></s:password> </td> </tr> <tr> <td> file </td> <td id="more"> <s:file name="file"></s:file><input type="button" value="Add More.." onclick="addMore()"> </td> </tr> <tr> <td> <s:submit value=" submit "></s:submit> </td> <td> <s:reset value=" reset "></s:reset> </td> </tr> </table> </s:form> </body> </html>
2.实现文件上传的Action类
package com.cjg.action; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.InputStream; import java.io.OutputStream; import java.util.List; import org.apache.struts2.ServletActionContext; import com.opensymphony.xwork2.ActionSupport; public class UploadAction extends ActionSupport { private String username; private String password; private List<File> file; private List<String> fileFileName; private List<String> fileContentType; public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public List<File> getFile() { return file; } public void setFile(List<File> file) { this.file = file; } public List<String> getFileFileName() { return fileFileName; } public void setFileFileName(List<String> fileFileName) { this.fileFileName = fileFileName; } public List<String> getFileContentType() { return fileContentType; } public void setFileContentType(List<String> fileContentType) { this.fileContentType = fileContentType; } @Override public String execute() throws Exception { for (int i = 0; i < file.size(); ++i) { InputStream is = new FileInputStream(file.get(i)); String root = ServletActionContext.getRequest().getRealPath( "/upload"); File destFile = new File(root, this.getFileFileName().get(i)); OutputStream os = new FileOutputStream(destFile); byte[] buffer = new byte[400]; int length = 0; while ((length = is.read(buffer)) > 0) { os.write(buffer, 0, length); } is.close(); os.close(); } return SUCCESS; } }
3.Struts.xml的配置
<constant name="struts.multipart.saveDir" value="c:\"></constant> <package name="struts2" extends="jfreechart-default"> <action name="upload" class="com.cjg.action.UploadAction"> <result name="success">/uploadResult.jsp</result> <result name="input">/uploadfileup.jsp</result> <interceptor-ref name="fileUpload"> <param name="maximumSize">409600</param> <param name="allowedTypes"> application/vnd.ms-powerpoint </param> </interceptor-ref> <interceptor-ref name="defaultStack"></interceptor-ref> </action> </package>