discuz头像上传插件Java版

package com.pkg.upload; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.PrintWriter; import java.net.URLDecoder; import java.net.URLEncoder; import java.util.Iterator; import java.util.List; import java.util.UUID; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.FileUploadException; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; /** * discuz头像上传 集成camera.swf 可对图片进行裁剪及调用摄像头 * @author quadrapop * */ public class AvatarServlet extends HttpServlet{ private static final long serialVersionUID = -6611495029909662649L; private String tempPath = ""; private String imgPath = ""; @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { this.doPost(req, resp); } @Override protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.addHeader("Content-Type", "text/html;charset=utf-8"); PrintWriter out = response.getWriter(); String imagepath=""; String action= request.getParameter("a"); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+"/";; this.tempPath = getPhysicalPath(request,"upload/img_cache/"); this.imgPath = getPhysicalPath(request,"upload/img/"); if(action==null){ //最终裁剪好的图片存放位置 String uid=UUID.randomUUID().toString(); imagepath="upload/img/"+uid+"_big.jpg"; // 裁剪后的路径，也就是页面上要显示的图片路径 /* * function updateavatar() 是裁剪成功后的回调函数 */ out.println("<script type=\"text/javascript\">"); out.println("function updateavatar() {"); out.println("document.getElementById(\"avatarpic_big\").src='"+imagepath+"';"); imagepath="upload/img/"+uid+"_middle.jpg"; out.println("document.getElementById(\"avatarpic_middle\").src='"+imagepath+"';"); imagepath="upload/img/"+uid+"_small.jpg"; out.println("document.getElementById(\"avatarpic_small\").src='"+imagepath+"';"); out.println("}"); out.println("</script>"); try { out.print(renderHtml("5",basePath,URLEncoder.encode(uid,"utf-8"))); } catch (Exception e) { e.printStackTrace(); } }else if("uploadavatar".equals(action)){ //上传临时图片 String picNewName= ""; DiskFileItemFactory fac = new DiskFileItemFactory(); fac.setRepository(new File(this.tempPath)); ServletFileUpload upload = new ServletFileUpload(fac); upload.setHeaderEncoding("utf-8"); List fileList = null; try { fileList = upload.parseRequest(request); } catch (FileUploadException ex) { ex.printStackTrace(); } Iterator<FileItem> it = fileList.iterator(); String name = ""; String extName = ""; //判断存贮路径是否存在 File f=new File(tempPath); if(!f.exists()){ f.mkdirs(); } while (it.hasNext()) { FileItem item = it.next(); if (!item.isFormField()) { name = item.getName(); if (name == null || name.trim().equals("")) { continue; } // 扩展名格式： if (name.lastIndexOf(".") >= 0) { extName = name.substring(name.lastIndexOf(".")); } File file = null; picNewName= UUID.randomUUID().toString()+extName; file = new File( tempPath + picNewName); if(file.exists()){ file.delete(); } File saveFile = new File(tempPath+ picNewName); try { item.write(saveFile); } catch (Exception e) { e.printStackTrace(); } } } out.print(basePath+"upload/img_cache/"+picNewName); }else if("rectavatar".equals(action)){//缩略图 String avatar1 = request.getParameter("avatar1");//大 String avatar2 = request.getParameter("avatar2");//中 String avatar3 = request.getParameter("avatar3");//小 String output =""; try { output = URLDecoder.decode(request.getParameter("input").trim(),"utf-8"); }catch(Exception e) { System.out.println("解码错误!"); } imagepath=imgPath+output+"_big.jpg"; boolean a1=saveFile(imagepath,getFlashDataDecode(avatar1)); imagepath=imgPath+output+"_middle.jpg"; boolean a2=saveFile(imagepath,getFlashDataDecode(avatar2)); imagepath=imgPath+output+"_small.jpg"; boolean a3=saveFile(imagepath,getFlashDataDecode(avatar3)); if(a1&&a2&&a3){ out.print("<?xml version=\"1.0\" ?><root><face success=\"1\"/></root>"); }else{ out.print("<root><message type=\"error\" value=\"-1\" /></root>"); } } out.flush(); } //编辑页面中包含 camera.swf 的 HTML 代码 public String renderHtml(String id,String basePath,String input) throws Exception { String uc_api =URLEncoder.encode(basePath+"avatar.jhtml","utf-8"); String urlCameraFlash = "js/camera.swf?nt=1&inajax=1&appid=1&input="+input+"&uploadSize=1000&ucapi="+uc_api; urlCameraFlash = "<script src=\"js/common.js?B6k\" type=\"text/javascript\"></script><script type=\"text/javascript\">document.write(AC_FL_RunContent(\"width\",\"450\",\"height\",\"253\",\"scale\",\"exactfit\",\"src\",\""+urlCameraFlash+"\",\"id\",\"mycamera\",\"name\",\"mycamera\",\"quality\",\"high\",\"bgcolor\",\"#ffffff\",\"wmode\",\"transparent\",\"menu\",\"false\",\"swLiveConnect\",\"true\",\"allowScriptAccess\",\"always\"));</script>"; return urlCameraFlash; } // 获取裁剪后的字节 private byte[] getFlashDataDecode(String src) { char []s=src.toCharArray(); int len=s.length; byte[] r = new byte[len / 2]; for (int i = 0; i < len; i = i + 2) { int k1 = s[i] - 48; k1 -= k1 > 9 ? 7 : 0; int k2 = s[i + 1] - 48; k2 -= k2 > 9 ? 7 : 0; r[i / 2] = (byte)(k1 << 4 | k2); } return r; } // 保存文件 public boolean saveFile(String path,byte[]b){ try{ FileOutputStream fs = new FileOutputStream(path); fs.write(b, 0, b.length); fs.close(); return true; }catch(Exception e){ return false; } } /** * 根据传入的虚拟路径获取物理路径 * * @param path * @return */ private String getPhysicalPath(HttpServletRequest request,String path) { String servletPath = request.getServletPath(); String realPath = request.getSession().getServletContext() .getRealPath(servletPath); return new File(realPath).getParent() +"\\" +path; } }