图片上传、修改、缩略图

package com.sp.util;

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

import org.apache.commons.io.FileUtils;

public class PhotoUtil {
/**
* @author wwd
* @Title: copyPhotoByOne
* @Description: 上传、修改文件 
* @param  photoname 修改原始图片名称
* @param  savePath  保存路径
* @param photoFiles 上传或修改的文件
* @param  photoName  上传或修改文件名
* @param  flag  1：上传  其余为修改
* @param  packages  要存储的最后一个包名
* @param @return    设定文件
* @return String    返回类型
* @throws
*/
public static String copyPhotoByOne( String savePath, File photoFiles, String photoName,String packages,int flag) {
String newName ="";
try {
//新文件名
newName = packages + File.separator + UUID.randomUUID() + photoName.substring(photoName.lastIndexOf("."), photoName.length());
//判断文件夹是否存在，不在创建
File uploadDir = new File(savePath+packages);
if (!uploadDir.isDirectory()) {
uploadDir.mkdirs();
}
if(flag == 1){
//新增文件
File file1 = new File(new File(savePath), newName);
FileUtils.copyFile(photoFiles, file1);
}else{
//修改文件
File file1 = new File(new File(savePath), photoName);
if (!file1.getParentFile().exists()) {
file1.getParentFile().mkdirs();
}
FileUtils.copyFile(photoFiles, file1);
// 修改文件名称
file1.renameTo(new File(savePath + newName));
}
newName = newName.replace(File.separator, "/");
} catch (IOException e) {
e.printStackTrace();
}
return newName;
}
/**
* @author wwd
* @Title: deletePhoto
* @Description: 删除文件
* @param @param savePath 存储路径
* @param @param fileName 文件名
* @return void    返回类型
* @throws
*/
public static void deletePhoto(String savePath,String fileName){
fileName = fileName.replace("/",File.separator);
File old_file = new File(new File(savePath), fileName.toString());
if (old_file.exists())
old_file.delete(); // 若存在即删除
}
/**
* @author wwd
* @Title: getNewPhoto
* @Description: 等比例压缩后获取图片名称
* @param @param fileName
* @param @param packages
* @param @return    设定文件
* @return String    返回类型
* @throws
*/
public static String getNewPhoto(String fileName,String packages,String savePath,int photoSize){
//根据大图生成小图 ,转换为了获取包路径
String newName ="";
try {
fileName = fileName.replace("/",File.separator);
File originalImage = new File(savePath+fileName); 
newName  = packages + File.separator + UUID.randomUUID() + fileName.substring(fileName.lastIndexOf("."), fileName.length());
ImageZipUtil.resize(originalImage, new File(savePath+newName),photoSize, 0.75f);
newName = newName.replace(File.separator,"/");
} catch (IOException e) {
e.printStackTrace();
}
return newName;
}
/**
* @author wwd
* @Title: copyPhotoByOne
* @Description: 上传图片不改名
* @param @param savePath
* @param @param photoFiles
* @param @param photoName
* @param @param packages
* @param @param flag
* @param @return    设定文件
* @return String    返回类型
* @throws
*/
public static void updatePhotoByOne( String savePath, String fileName,File photoFiles) {
try {
//修改文件
File file = new File(savePath);
if (!file.isDirectory()) {
file.mkdirs();
}
File file1 = new File(new File(savePath), fileName);

if (!file1.getParentFile().exists()) {
file1.getParentFile().mkdirs();
}
FileUtils.copyFile(photoFiles, file1);
// 修改文件名称
} catch (IOException e) {
e.printStackTrace();
}
}
}


package com.sp.util;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;   
import java.awt.image.BufferedImage;   
import java.io.File;   
import java.io.FileOutputStream;   
import java.io.IOException;  

import com.sun.image.codec.jpeg.JPEGImageEncoder; 
import com.sun.image.codec.jpeg.JPEGCodec; 
import com.sun.image.codec.jpeg.JPEGEncodeParam; 
import java.awt.image.Kernel; 
import java.awt.image.ConvolveOp;
   
import javax.swing.ImageIcon;
   
   
public class ImageZipUtil {   
   
    /**
    * @author wwd
    * @Title: resize
    * @Description: 等比例压缩图片
    * @param @param originalFile
    * @param @param resizedFile
    * @param @param newWidth
    * @param @param quality
    * @param @throws IOException    设定文件
    * @return void    返回类型
    * @throws
     */
    public static void resize(File originalFile, File resizedFile, int newWidth, float quality) throws IOException { 
 
        if (quality > 1) { 
            throw new IllegalArgumentException( 
                    "Quality has to be between 0 and 1"); 
        } 
 
        ImageIcon ii = new ImageIcon(originalFile.getCanonicalPath()); 
        Image i = ii.getImage(); 
        Image resizedImage = null; 
 
        int iWidth = i.getWidth(null); 
        int iHeight = i.getHeight(null); 
 
        if (iWidth > iHeight) { 
            resizedImage = i.getScaledInstance(newWidth, (newWidth * iHeight) 
                    / iWidth, Image.SCALE_SMOOTH); 
        } else { 
            resizedImage = i.getScaledInstance((newWidth * iWidth) / iHeight, 
                    newWidth, Image.SCALE_SMOOTH); 
        } 
 
        // This code ensures that all the pixels in the image are loaded. 
        Image temp = new ImageIcon(resizedImage).getImage(); 
 
        // Create the buffered image. 
        BufferedImage bufferedImage = new BufferedImage(temp.getWidth(null), 
                temp.getHeight(null), BufferedImage.TYPE_INT_RGB); 
 
        // Copy image to buffered image. 
        Graphics g = bufferedImage.createGraphics(); 
 
        // Clear background and paint the image. 
        g.setColor(Color.white); 
        g.fillRect(0, 0, temp.getWidth(null), temp.getHeight(null)); 
        g.drawImage(temp, 0, 0, null); 
        g.dispose(); 
 
        // Soften. 
        float softenFactor = 0.05f; 
        float[] softenArray = { 0, softenFactor, 0, softenFactor, 
                1 - (softenFactor * 4), softenFactor, 0, softenFactor, 0 }; 
        Kernel kernel = new Kernel(3, 3, softenArray); 
        ConvolveOp cOp = new ConvolveOp(kernel, ConvolveOp.EDGE_NO_OP, null); 
        bufferedImage = cOp.filter(bufferedImage, null); 
 
        // Write the jpeg to a file. 
        FileOutputStream out = new FileOutputStream(resizedFile); 
 
        // Encodes image as a JPEG data stream 
        JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out); 
 
        JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bufferedImage); 
 
        param.setQuality(quality, true); 
 
        encoder.setJPEGEncodeParam(param); 
        encoder.encode(bufferedImage);
        out.close();
    } // Example usage 
  
 
  public static void main(String[] args) throws IOException { 
         File originalImage = new File("E:\\1.png"); 
         resize(originalImage, new File("E:\\2.png"),455, 0.75f); 
    }
   
}