struts2文件上传实例

package com.test.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;

/**
 * struts2文件上传
 *
 * @author Peerless
 *
 */
@SuppressWarnings("serial")
public class UploadAction extends ActionSupport {

 private String username;

 private String password;

 private List<File> file; // 用数组或集合处理多文件，单文件去掉集合即可。

 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;

 }

}