servlet 3.1 上传单张图片.java

package com.fz.servlet;

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

import javax.enterprise.inject.New;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.MultipartConfig;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.Part;

import com.fz.test.ImageText;

@WebServlet("/up.do")
@MultipartConfig
public class Up extends HttpServlet {

	private static final long serialVersionUID = 1L;

	@Override
	public void service(ServletRequest req, ServletResponse res)
			throws ServletException, IOException {
		String name = req.getParameter("name");
		HttpServletRequest request = (HttpServletRequest) req;
		// 获取文件
		Part part = request.getPart("ifile");
		// 获取上传文件名字
		String iString = part.getSubmittedFileName();
		// 获取文件后缀名
		String extString = iString.substring(iString.lastIndexOf(".")).toLowerCase();

		// 设置文件路径
		String pathString = this.getServletContext().getRealPath("upload/");
		//缩略图文件路径
		String path = this.getServletContext().getRealPath("uploadlim/");
		//水印图标
		String paths = this.getServletContext().getRealPath("65724_1408730_93.png");
		//System.out.println(path+"-*");
		File fi1 = new File(path);
		if (!fi1.exists()) {
			fi1.mkdirs();
		}
		File file = new File(pathString);
		if (!file.exists()) {
			file.mkdirs();
		}
		// UUID编码
		String uuid = UUID.randomUUID().toString();
		// 时间编码
		SimpleDateFormat sFormat = new SimpleDateFormat("yyyyMMddhhmmssS");
		String uuid1 = sFormat.format(new Date());
		//上穿名（1）形式
		//file.listFiles();
		// 设置文件大小
		long size = 1024 * 1000;
		if (part.getSize() < size) {
			System.out.println("----");
			//文件上传
			part.write(pathString+uuid1+extString);
			
			/*//批量图片加水印
			File fis = new File(pathString);
			File[] f = fis.listFiles();
			for (File file2 : f) {
				ImageText.writerText(file2);
			}*/
			//单个图片加水印
			File fi = new File(pathString+uuid1+extString);
			if (fi.exists()) {
				//添加水印文字
				ImageText.writerText(fi);
				//生产缩略图
				ImageText.littleImg(fi, new File(path+uuid+extString));
				String uuid2 = UUID.randomUUID().toString();
				//裁剪图片
				ImageText.cutImg(fi, new File(path+uuid2+extString));
				//logo
				ImageText.logo(fi,new File(paths));
			}
			
			
		}else {
			System.out.println("文件太大");
			PrintWriter out = res.getWriter();
			out.println("文件太大");
		}
		
	}

}