Struts2.0文件上传实例

package com.jiaheng.file.action; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.InputStream; import java.io.OutputStream; import java.util.Date; import org.apache.struts2.ServletActionContext; import com.opensymphony.xwork2.ActionSupport; public class FileUploadAction extends ActionSupport{ private static final int BUFFER_SIZE=800*1024; private File myFile; private String contentType; private String fileName; private String imageFileName; private String caption; public String getCaption() { return caption; } public void setCaption(String caption) { this.caption = caption; } public String getMyFileContentType() { return contentType; } public void setMyFileContentType(String contentType) { this.contentType = contentType; } public String getMyFileFileName() { return fileName; } public void setMyFileFileName(String fileName) { this.fileName = fileName; } public String getImageFileName() { return imageFileName; } public void setImageFileName(String imageFileName) { this.imageFileName = imageFileName; } public File getMyFile() { return myFile; } public void setMyFile(File myFile) { this.myFile = myFile; } /** * getter()and setter() * */ private static void copy(File src,File dst){ try{ InputStream in =null; OutputStream out = null; try{ in = new BufferedInputStream(new FileInputStream(src),BUFFER_SIZE); out = new BufferedOutputStream(new FileOutputStream(dst),BUFFER_SIZE); byte[] buffer = new byte[BUFFER_SIZE]; while(in.read(buffer)>0){ out.write(buffer); } }finally{ if(null!=in){ in.close(); } if(null!=out){ out.close(); } } }catch(Exception e){ e.printStackTrace(); } } private static String getExtention(String fileName){ int pos=fileName.lastIndexOf("."); return fileName.substring(pos); } public String execute(){ imageFileName=new Date().getTime()+getExtention(fileName); File imageFile=new File(ServletActionContext.getServletContext().getRealPath("/UploadImages")+"/"+imageFileName); System.out.println("imageFileName"+imageFile); copy(myFile,imageFile); return SUCCESS; } }