图像剪切
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);
}
}
