struts2+jquery+ajax文件异步上传

package ul; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import org.apache.struts2.ServletActionContext; import com.opensymphony.xwork2.ActionSupport; @SuppressWarnings("serial") public class FileAction extends ActionSupport { private File file; private String fileFileName; private String fileFileContentType; private String newfilename; private String groupid; private String message = "文件上传成功"; @SuppressWarnings("deprecation") @Override public String execute() throws Exception { String path = ServletActionContext.getRequest().getRealPath("/upload"); System.out.println(this.getFileFileName()+"........................"+this.getNewfilename()); try { File f = this.getFile(); if (this.getFileFileName().endsWith(".exe")) { message = "上传的文件格式不正确"; return ERROR; } FileInputStream inputStream = new FileInputStream(f); FileOutputStream outputStream = new FileOutputStream(path + "/" + this.getFileFileName()); byte[] buf = new byte[1024]; int length = 0; while ((length = inputStream.read(buf)) != -1) { outputStream.write(buf, 0, length); } inputStream.close(); outputStream.flush(); this.setMessage("http://localhost:8080/testup/upload/" + this.getFileFileName()); } catch (Exception e) { e.printStackTrace(); message = "上传文件失败!!!!"; } return SUCCESS; } public String getMessage() { return message; } public void setMessage(String message) { this.message = message; } public File getFile() { return file; } public void setFile(File file) { this.file = file; } public String getFileFileName() { return fileFileName; } public void setFileFileName(String fileFileName) { this.fileFileName = fileFileName; } public String getFileFileContentType() { return fileFileContentType; } public void setFileFileContentType(String fileFileContentType) { this.fileFileContentType = fileFileContentType; } public String getNewfilename() { return newfilename; } public void setNewfilename(String newfilename) { this.newfilename = newfilename; } public String getGroupid() { return groupid; } public void setGroupid(String groupid) { this.groupid = groupid; } }