原路径__@宽_高.jpg<img alt="" src="img__@55_55.jpg"nginx代理
location /upload/ {
if (!-f $request_filename) {
rewrite ^(.*)/upload/(.*)$ http://www.xxxxx.com/imagemagick?url=/upload/$2 break;
}
root /home/xxxxx/;
expires 60;
}
servlet
package com.spring.web.servlet;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.log4j.Logger;
import org.springframework.util.StringUtils;
import com.spring.web.util.ImageTools;
/**
* Servlet implementation class ValidateCode
*/
public class Image extends HttpServlet {
private static final Logger log = Logger.getLogger("R");
private static final long serialVersionUID = 1L;
public Image() {
super();
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//设置相应类型,告诉浏览器输出的内容为图片
response.setContentType("image/jpg");
String url = request.getParameter("url").replace("/xieyun", "");
//String url = request.getRequestURI().replace("/xieyun", "");
String wl_url = request.getSession().getServletContext().getRealPath("/");
String all_url = wl_url + url;
//log.error("url：" + url);
//log.error("all_url：" + all_url);
String[] arr = url.split("__@");
if(arr.length == 1) {
if(!new File(all_url).exists()) {
imageOut(wl_url +"/images/member/tx.jpg", response);
return;
} else {
imageOut(all_url, response);
return;
}
}
if(!new File(wl_url + arr[0]).exists()) {
imageOut(wl_url +"/images/member/tx.jpg", response);
return;
}
String originalName = arr[0].substring(arr[0].lastIndexOf("."));
Integer width = StringUtils.isEmpty(arr[1].split("_")[0])?null:Integer.parseInt(arr[1].split("_")[0]);
String xx = arr[1].split("_")[1];
Integer height = StringUtils.isEmpty(xx.substring(0,xx.lastIndexOf(".")))?null:Integer.parseInt(xx.substring(0,xx.lastIndexOf(".")));
String new_url = arr[0] + "__@" + (null==width?"":width) + "_" + (null==height?"":height) + ".jpg"/*originalName*/;
File file = new File(wl_url + new_url);
//log.error("new_url：" + new_url);
//log.error("wl_url + new_url：" + wl_url + new_url);
if(!file.exists()) {
try {
log.info("转换图片：" + width + ","+ height + ","+ wl_url + arr[0] + ","+ wl_url + new_url);
ImageTools.cutImage(width, height, wl_url + arr[0], wl_url + new_url);
imageOut(wl_url + new_url, response);
return;
} catch (Exception e) {
log.error(e.getMessage());
e.printStackTrace();
imageOut(all_url, response);
return;
}
} else {
imageOut(wl_url + new_url, response);
return;
}
}
public void imageOut(String imagePath, HttpServletResponse response) throws IOException {
FileInputStream fis = new FileInputStream(imagePath);
int size =fis.available(); //得到文件大小
byte data[]=new byte[size];
fis.read(data); //读数据
fis.close();
response.setContentType("image/jpg"); //设置返回的文件类型
OutputStream os = response.getOutputStream();
os.write(data);
os.flush();
os.close();
}
}
/**
* Copyright(c)2013 Wuxi Lanlin Co.,Ltd.
* All right reserved.
*/
package com.spring.web.util;
import org.im4java.core.ConvertCmd;
import org.im4java.core.IMOperation;
/**
* ImageMagick和im4java处理图片
* @author sunlightcs
* 2011-6-1
* http://hi.juziku.com/sunlightcs/
*/
public class ImageTools {
/**
* ImageMagick的路径
*/
public static String imageMagickPath = "C:\\Program Files\\ImageMagick-6.9.2-Q16";
static{
/**
* 获取ImageMagick的路径
*/
//Properties prop = new PropertiesFile().getPropertiesFile();
//linux下不要设置此值，不然会报错
//imageMagickPath = prop.getProperty("imageMagickPath");
}
/**
* 根据坐标裁剪图片
*
* @param srcPath 要裁剪图片的路径
* @param newPath 裁剪图片后的路径
* @param x 起始横坐标
* @param y 起始挫坐标
* @param x1 结束横坐标
* @param y1 结束挫坐标
*/
public static void cutImage(String srcPath, String newPath, int x, int y, int x1, int y1) throws Exception {
int width = x1 - x;
int height = y1 - y;
IMOperation op = new IMOperation();
op.addImage(srcPath);
/**
* width：裁剪的宽度
* height：裁剪的高度
* x：裁剪的横坐标
* y：裁剪的挫坐标
*/
op.crop(width, height, x, y);
op.addImage(newPath);
ConvertCmd convert = new ConvertCmd();
//linux下不要设置此值，不然会报错
//convert.setSearchPath(imageMagickPath);
convert.run(op);
}
/**
* 根据尺寸缩放图片
* @param width 缩放后的图片宽度
* @param height 缩放后的图片高度
* @param srcPath 源图片路径
* @param newPath 缩放后图片的路径
*/
public static void cutImage(Integer width, Integer height, String srcPath, String newPath) throws Exception {
IMOperation op = new IMOperation();
op.addImage(srcPath);
op.resize(width, height);
op.addImage(newPath);
ConvertCmd convert = new ConvertCmd();
//linux下不要设置此值，不然会报错
//convert.setSearchPath("C:\\ImageMagick-6.9.2-Q16");
convert.run(op);
}
/**
* 根据宽度缩放图片
* @param width 缩放后的图片宽度
* @param srcPath 源图片路径
* @param newPath 缩放后图片的路径
*/
public static void cutImage(int width, String srcPath, String newPath) throws Exception {
IMOperation op = new IMOperation();
op.addImage(srcPath);
op.resize(width, null);
op.addImage(newPath);
ConvertCmd convert = new ConvertCmd();
//linux下不要设置此值，不然会报错
//convert.setSearchPath(imageMagickPath);
convert.run(op);
}
/**
* 给图片加水印
* @param srcPath 源图片路径
*/
public static void addImgText(String srcPath) throws Exception {
IMOperation op = new IMOperation();
op.font("宋体").gravity("southeast").pointsize(18).fill("#BCBFC8").draw("text 5,5 juziku.com");
op.addImage();
op.addImage();
ConvertCmd convert = new ConvertCmd();
//linux下不要设置此值，不然会报错
//convert.setSearchPath(imageMagickPath);
convert.run(op,srcPath,srcPath);
}
public static void main(String[] args) throws Exception{
//cutImage("D:\\apple870.jpg", "D:\\apple870eee.jpg", 98, 48, 370, 320);
cutImage(400,600, "E:/01_200_300.jpg", "E:/01_200_300.jpg");
//addImgText("//home//steven//a.jpg");
}
}