//前端代码
<%@ page language="java" contentType="text/html; charset=gb2312" pageEncoding="gb2312"%> <%@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=gb2312"> <title>上传文件</title> </head> <body> <!-- 上传文件表单定义 --> <s:form action="upload" method="post" enctype="multipart/form-data"> <tr> <!-- 上传文件标签定义 --> <td>上传文件:<s:file name="file"></s:file></td> </tr> <tr> <td>再次上传文件:<s:file name="file"></s:file></td> </tr> <tr> <td align="left"><s:submit name="submit" value="提交"></s:submit></td> </tr> </s:form> </body> </html>
后台代码
package action; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.util.List; import org.apache.struts2.ServletActionContext; import com.opensymphony.xwork2.ActionSupport; //文件上传Action public class UploadAction extends ActionSupport { //上传文件存放路径 private final static String UPLOADDIR = "/upload"; //上传文件集合 private List<File> file; //上传文件名集合 private List<String> fileFileName; //上传文件内容类型集合 private List<String> fileContentType; 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; } public String execute() throws Exception { for (int i = 0; i < file.size(); i++) { //循环上传每个文件 uploadFile(i); } return "success"; } //执行上传功能 private void uploadFile(int i) throws FileNotFoundException, IOException { try { InputStream in = new FileInputStream(file.get(i)); String dir = ServletActionContext.getRequest().getRealPath(UPLOADDIR); File uploadFile = new File(dir, this.getFileFileName().get(i)); OutputStream out = new FileOutputStream(uploadFile); byte[] buffer = new byte[1024 * 1024]; int length; while ((length = in.read(buffer)) > 0) { out.write(buffer, 0, length); } in.close(); out.close(); } catch (FileNotFoundException ex) { ex.printStackTrace(); } catch (IOException ex) { ex.printStackTrace(); } } }
