Parameters parameter = new Parameters();
parameter.setFileName(imgEditor.getFileName(file,request,session));
<span style="white-space:pre"> </span>return parameter;
}
}
我在这规定图片在前台展示的大小为400*400，用到的图片裁剪压缩等的工具类为：
package com.quanshi.ums.gate.view.rest;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.geom.AffineTransform;
import java.awt.image.AffineTransformOp;
import java.awt.image.BufferedImage;
import java.awt.image.CropImageFilter;
import java.awt.image.FilteredImageSource;
import java.awt.image.ImageFilter;
import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date; import javax.imageio.ImageIO;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.web.multipart.MultipartFile;
public class ImgEditor {
/**
* 改变图片尺寸
* @param srcFileName 源图片路径
* @param tagFileName 目的图片路径
* @param width 修改后的宽度
* @param height 修改后的高度
*/
public void zoomImage(String srcFileName,String tagFileName,int width,int height){
try {
BufferedImage bi = ImageIO.read(new File(srcFileName));
BufferedImage tag=new BufferedImage(width,height, BufferedImage.TYPE_INT_RGB);
tag.getGraphics().drawImage(bi, 0, 0, width, height, null);
ImageIO.write(tag, "jpg", new File(tagFileName));//画图
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* 缩放图像（按高度和宽度缩放）
* @param srcImageFile 源图像文件地址
* @param result 缩放后的图像地址
* @param height 缩放后的高度
* @param width 缩放后的宽度
* @param bb 比例不对时是否需要补白：true为补白; false为不补白;
*/
public void scale(String srcImageFile, String result, int height, int width, boolean bb) {
try {
double ratio = 0.0; // 缩放比例
File f = new File(srcImageFile);
BufferedImage bi = ImageIO.read(f);
Image itemp = bi.getScaledInstance(width, height, bi.SCALE_SMOOTH);
// 计算比例
if ((bi.getHeight() > height) || (bi.getWidth() > width)) {
if (bi.getHeight() > bi.getWidth()) {
ratio = (new Integer(height)).doubleValue()
/ bi.getHeight();
} else {
ratio = (new Integer(width)).doubleValue() / bi.getWidth();
}
AffineTransformOp op = new AffineTransformOp(AffineTransform
