图像剪切

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图像处理

Servlet EXT JSP

上传图片类

package com.cmcc.servlet;

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.jspsmart.upload.File;
import com.jspsmart.upload.SmartUpload;

/*****************************************************
 * 
 * @author wuzhenzhong
 * 
 * @since 2009-3-10
 * 
 *****************************************************/
public class UpLoadUserHeadImage extends HttpServlet {

	
	
	/**
	 * 上传图片类
	 */
	private static final long serialVersionUID = -3421050378459224321L;
	public UpLoadUserHeadImage() {
		config = null;
		FileName = null;
		sPath = "/UploadPhoto";
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		SmartUpload mySmartUpload = new SmartUpload();
		mySmartUpload.initialize(config, request, response);
		mySmartUpload.setMaxFileSize(0x200000L);
		mySmartUpload.setAllowedFilesList("jpg,gif,png,jpeg,bmp");
		try {
			mySmartUpload.upload();
			File myFile = mySmartUpload.getFiles().getFile(0);
			if (!myFile.isMissing()) {
				Date currTime = new Date();
				SimpleDateFormat formatter2 = new SimpleDateFormat(
						"yyyyMMddhhmmssS", Locale.US);
				FileName = new String(formatter2.format(currTime).getBytes(
						"iso-8859-1"));
				String ext = myFile.getFileExt();
				FileName = (new StringBuilder(String.valueOf(FileName)))
						.append(".").append(ext).toString();
				myFile.saveAs((new StringBuilder(String.valueOf(sPath)))
						.append("/").append(FileName).toString(), 1);
			}
			response.sendRedirect((new StringBuilder(
					"/upload/uploadimage.jsp?Picurl=")).append(FileName)
					.append("&step=2").toString());
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	public void init(ServletConfig config) throws ServletException {
		this.config = config;
	}

	private ServletConfig config;
	private String FileName;
	private String sPath;
}

图片处理类用于对图片进行剪切

package com.cmcc.servlet;

import java.awt.Rectangle;
import java.io.File;
import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.cmcc.util.ImageHepler;

/*****************************************************
 * 
 * @author wuzhenzhong
 * 
 * @since 2009-3-10
 * 
 *****************************************************/
public class ZoomImage extends HttpServlet {

	/**
	 * 
	 */
	private static final long serialVersionUID = 3424060966540179365L;

	public ZoomImage() {
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		int imageWidth = Integer.parseInt(request.getParameter("txt_width"));
		int imageHeight = Integer.parseInt(request.getParameter("txt_height"));
		int cutTop = Integer.parseInt(request.getParameter("txt_top"));
		int cutLeft = Integer.parseInt(request.getParameter("txt_left"));
		int dropWidth = Integer.parseInt(request.getParameter("txt_DropWidth"));
		int dropHeight = Integer.parseInt(request
				.getParameter("txt_DropHeight"));
		float imageZoom = Float.parseFloat(request.getParameter("txt_Zoom"));
		String picture = request.getParameter("picture");
		System.out.println((new StringBuilder("imageWidth : ")).append(
				imageWidth).toString());
		System.out.println((new StringBuilder("imageHeight : ")).append(
				imageHeight).toString());
		System.out.println((new StringBuilder("cutTop : ")).append(cutTop)
				.toString());
		System.out.println((new StringBuilder("cutLeft : ")).append(cutLeft)
				.toString());
		System.out.println((new StringBuilder("dropWidth : "))
				.append(dropWidth).toString());
		System.out.println((new StringBuilder("dropHeight : ")).append(
				dropHeight).toString());
		System.out.println((new StringBuilder("imageZoom : "))
				.append(imageZoom).toString());
		System.out.println((new StringBuilder("picture : ")).append(picture)
				.toString());
		System.out.println((new StringBuilder("url :")).append(
				request.getRealPath("")).append("/UploadPhoto/")
				.append(picture).toString());
		Rectangle rec = new Rectangle(cutLeft, cutTop, dropWidth, dropHeight);
		File file = new File((new StringBuilder(String.valueOf(request
				.getRealPath("")))).append("/User/UserHeadImage/").append(
				picture).toString());
		saveSubImage(new File((new StringBuilder(String.valueOf(request
				.getRealPath("")))).append("/UploadPhoto/").append(picture)
				.toString()), file, imageWidth, imageHeight, rec);
		response.sendRedirect((new StringBuilder(
				"/upload/uploadimage.jsp?Picurl=")).append(picture)
				.append("&step=3").toString());
	}

	private static void saveSubImage(File srcImageFile, File descDir,
			int width, int height, Rectangle rect) throws IOException {
		ImageHepler.cut(srcImageFile, descDir, width, height, rect);
	}
}

用于图片剪切和保存图片

package com.cmcc.util;

import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.*;
import javax.imageio.ImageIO;

/*****************************************************
 * 
 * @author wuzhenzhong
 * 
 * @since 2009-3-10
 * 
 *****************************************************/
public class ImageHepler {

	public ImageHepler() {
	}

	private static BufferedImage makeThumbnail(Image img, int width, int height) {
		BufferedImage tag = new BufferedImage(width, height, 1);
		Graphics g = tag.getGraphics();
		g.drawImage(img.getScaledInstance(width, height, 4), 0, 0, null);
		g.dispose();
		return tag;
	}

	private static void saveSubImage(BufferedImage image,
			Rectangle subImageBounds, File subImageFile) throws IOException {
		String fileName = subImageFile.getName();
		String formatName = fileName.substring(fileName.lastIndexOf('.') + 1);
		BufferedImage subImage = new BufferedImage(subImageBounds.width,
				subImageBounds.height, 1);
		Graphics g = subImage.getGraphics();
		if (subImageBounds.width > image.getWidth()
				|| subImageBounds.height > image.getHeight()) {
			int left = subImageBounds.x;
			int top = subImageBounds.y;
			if (image.getWidth() < subImageBounds.width)
				left = (subImageBounds.width - image.getWidth()) / 2;
			if (image.getHeight() < subImageBounds.height)
				top = (subImageBounds.height - image.getHeight()) / 2;
			g.setColor(Color.white);
			g.fillRect(0, 0, subImageBounds.width, subImageBounds.height);
			g.drawImage(image, left, top, null);
			ImageIO.write(image, formatName, subImageFile);
			System.out.println((new StringBuilder("if is running left:"))
					.append(left).append(" top: ").append(top).toString());
		} else {
			g.drawImage(image.getSubimage(subImageBounds.x, subImageBounds.y,
					subImageBounds.width, subImageBounds.height), 0, 0, null);
			System.out.println("else is running");
		}
		g.dispose();
		ImageIO.write(subImage, formatName, subImageFile);
	}

	public static void cut(String srcImageFile, String descDir, int width,
			int height, Rectangle rect) throws IOException {
		Image image = ImageIO.read(new File(srcImageFile));
		BufferedImage bImage = makeThumbnail(image, width, height);
		saveSubImage(bImage, rect, new File(descDir));
	}

	public static void cut(File srcImageFile, File descDir, int width,
			int height, Rectangle rect) throws IOException {
		Image image = ImageIO.read(srcImageFile);
		BufferedImage bImage = makeThumbnail(image, width, height);
		saveSubImage(bImage, rect, descDir);
	}
}