Struts2上传图片

package com.action;

import java.io.File;
import java.io.IOException;
import java.net.URLEncoder;
import java.util.UUID;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

import org.apache.struts2.ServletActionContext;
import org.aspectj.util.FileUtil;

import com.opensymphony.xwork2.ActionContext;

public class UploadAction {

	private File file;
	private String fileFileName; // 文件名
	private String fileContentType;// 文件类型
	private String maximumSize;// 文件大小
	private String allowedTypes;// 上传文件容许的类型

	public String execute() throws Exception {
		String realpath = ServletActionContext.getServletContext().getRealPath("/upload"); 
		HttpSession session=ServletActionContext.getRequest().getSession();
		
		HttpServletRequest request=ServletActionContext.getRequest();
		boolean falg = false;
		String fileType[] = allowedTypes.split(",");
		for (int j = 0; j < fileType.length; j++) {
			if (fileContentType.equals(fileType[j])) {
				falg = true;
			}
		}
		if (falg == false) {
			ActionContext.getContext().put("errormsg", "你上传的格式不是images格式文件!");
			return "error_msg";
		}
		if (file.length() > Long.parseLong(maximumSize)) {
			ActionContext.getContext().put("errormsg", "上传文件超过限制5MB");
			return "error_msg";
		}

		fileFileName = fileFileName.toLowerCase();// 获取这个文件转为为小写
		/**
		 */
		boolean falg1 = false;

		if (falg1) {
			ActionContext.getContext().put("errormsg", "该文件已经导入,请选择其他文件!");
			return "error_msg";
		} 
		/** 正在上传1 */
		File uploadFile = new File(realpath);
		if (!uploadFile.exists()) {
			uploadFile.mkdir();
		}
		
		File savefile = new File(new File(realpath), fileFileName);
		// 创建文件目录
		if (!savefile.getParentFile().exists()) {
			savefile.getParentFile().mkdirs();
		}
		try {
			FileUtil.copyFile(file, savefile);
			//session.setAttribute("msgs", "上传成功");
			//	IOUtils.renameFile(uploadFile, "goods_");
			//System.out.println("fileFileName:"+fileFileName);
			request.setAttribute("msgs",URLEncoder.encode(fileFileName,"UTF-8"));
		} catch (IOException e) {
			e.printStackTrace();
		}
		return "success";
	}

	public File getFile() {
		return file;
	}

	public void setFile(File file) {
		this.file = file;
	}

	public String getFileFileName() {
		String[] fileFiles = fileFileName.split("\\.");
		return UUID.randomUUID().toString()+"."+fileFiles[1];
	}

	public void setFileFileName(String fileFileName) {
		this.fileFileName = fileFileName;
	}

	public String getFileContentType() {
		return fileContentType;
	}

	public void setFileContentType(String fileContentType) {
		this.fileContentType = fileContentType;
	}

	public String getMaximumSize() {
		return maximumSize;
	}

	public void setMaximumSize(String maximumSize) {
		this.maximumSize = maximumSize;
	}

	public String getAllowedTypes() {
		return allowedTypes;
	}

	public void setAllowedTypes(String allowedTypes) {
		this.allowedTypes = allowedTypes;
	}
	
	 

}

	
	 	<action name="upload" class="com.UploadAction">
			<param name="allowedTypes">
				image/bmp,image/png,image/gif,image/jpeg,image/jpg,
      			image/pjpeg ,image/bmp, image/gif, image/x-png,
      		</param>
			<param name="maximumSize">5242880</param>
			<result name="success">/message.jsp</result>
			<result name="error_msg">/error.jsp</result>
		</action>