java 图形处理库_java中处理图片的类库
拷貝一下代碼,以后備用:import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.methods.GetMethod;
import com.aa.bb.Constants;
import com.aa.bb.util.ImageUtil;
import com.aa.bb.util.StringUtil;
import com.aa.bb.util.upload.GetURLUtil;
import com.aa.bb.util.upload.HandleUploadeFile;
import com.aa.bb.util.upload.MD5;
public class UDArticleImagesAction extends HttpServlet {
/**
* Constructor of the object.
*/
public UDArticleImagesAction() {
super();
}
/**
* The doPost method of the servlet.
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
request.setCharacterEncoding("UTF-8");
PrintWriter out = response.getWriter();
String body = request.getParameter("body");
String path = getServletContext().getRealPath(GetURLUtil.getWebArticleAffixPath() +
GetURLUtil.getPath() + Constants.YEAR? + GetURLUtil.getPath() +
Constants.MONTH);
String fileName;
// 文章內容非空
if(!StringUtil.isBlank(body)) {
// 取得文章中所有IMG標簽
List imgList = ImageUtil.getImgSrc(body);
HttpClient client = new HttpClient();
// 遍歷下載并重命名
for(String img : imgList) {
// 取得URL中的文件名
fileName = img.split("/")[img.split("/").length - 1];
// get方法取得圖片
GetMethod get = new GetMethod(img);
client.executeMethod(get);
// 建立文件存儲路徑
HandleUploadeFile.checkDirectoryAndCreateDirectory(path);
//圖片名稱
String imgName = MD5.getImgName(fileName);
// 存儲文件
//??? ??? ??????? System.out.println(path + "\\" + MD5.getImgName(fileName));
//??? ??? ??????? File storeFile = new File(path + "\\" + MD5.getImgName(fileName));
System.out.println(path + "\\" + imgName);
File storeFile = new File(path + "\\" + imgName);
FileOutputStream output = new FileOutputStream(storeFile);
//得到網絡資源的字節數組,并寫入文件
output.write(get.getResponseBody());
output.close();
// 初始化新圖片本地URL
String imgUrl = "http://" + request.getServerName();
if(request.getServerPort() != 80) {
imgUrl += ":" + request.getServerPort();
}
imgUrl += "/cms" + GetURLUtil.getWebArticleAffixPath() +
"/" + Constants.YEAR + "/" + Constants.MONTH + "/" + imgName;
System.out.println(imgUrl);
// 替換到原文章內容
body = StringUtil.replaceAll(body, img, imgUrl);
}
System.out.println(body);
out.println(body);
}
out.flush();
out.close();
}
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("123");
out.flush();
out.close();
}
}
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