跨服务器上传图片win7tolinuix

有一台专门的图片服务器 A,然后服务器B要满足上传、修改图片到服务器A上,需求大概就是这样。

解决途径采用 HttpClient 模拟from表单提交，在A上有一个 服务端来处理上传图片的请求

HttpClient用的是 4.23

测试成功 win7上传xp,win7上传linux(不知道版本)

参考：

http://www.cnblogs.com/zhangxz/archive/2010/09/06/1819333.html

1.服务端

主要方法

url:http://192.168.1.135:8080/servlet/UploadImageServlet?xx=xx&xx=xx

</pre><pre name="code" class="java">public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {//init();request.setCharacterEncoding("UTF-8");   response.setContentType("text/html");response.setCharacterEncoding("UTF-8"); try {System.out.print("*********开始上传图片到服务器************");// 获取url后面参数String realPath = (String) request.getParameter("realPath");String fileName = (String) request.getParameter("fileName");String delOldPath = (String) request.getParameter("delOldPath");System.out.println("fileName:"+fileName);System.out.println("realPath:"+realPath);System.out.println("delOldPath:"+delOldPath);if(null != realPath && !"".equals(realPath)){initPath(realPath);}    DiskFileItemFactory factory = new DiskFileItemFactory();    // 设置缓冲区大小，这里是4kb    factory.setSizeThreshold(10240000);    // 设置缓冲区目录    factory.setRepository(tempPathFile);    ServletFileUpload upload = new ServletFileUpload(factory);    // 设置最大文件尺寸，这里是4MB    upload.setSizeMax(4194304);     upload.setHeaderEncoding("UTF-8");    // 得到所有的文件    List<FileItem> items = upload.parseRequest(request);    Iterator<FileItem> i = items.iterator();    while (i.hasNext()){    FileItem fi = (FileItem) i.next();    String filename = fi.getName();    if (filename != null && checkFormat(filename)){    File fullFile = new File(filename);    File savedFile = new File(uploadPath, fullFile.getName());    fi.write(savedFile);    System.out.print("----------------------"+fileName+",上传成功---------");    }else{    System.out.print("----------------------上传失败，"+fileName+":格式不对---------");    }    }    // 删除旧的图片if(null!=delOldPath && !"".equals(delOldPath)){delOldPic(delOldPath);}   }   catch (Exception e){    System.out.println(e.getMessage());    e.printStackTrace();   }}

其它方法：// 创建路径public void initPath(String path){uploadPath = path;tempPath = path+"/temp";File uploadFile = new File(path);        if (!uploadFile.exists()) {            uploadFile.mkdirs();        }    File tempPathFile = new File(tempPath);    if (!tempPathFile.exists()) {    tempPathFile.mkdirs();    }}//上传格式检查public boolean checkFormat(String fileName){String fileExt = fileName.substring(fileName.lastIndexOf(".") + 1);String[] fileTypes = new String[] { "gif", "jpg", "jpeg", "png","bmp" };//检查扩展名    if (!Arrays.<String> asList(fileTypes).contains(fileExt)) {         return false;     } return true;}public String dealFileName(String fileName){String fileExt = fileName.substring(fileName.lastIndexOf(".") + 1);// 名称后面加上时间戳SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyyMMdd");    String uploadTime=simpleDateFormat.format(new Date()) + "_" + String.valueOf(System.currentTimeMillis());StringBuilder newName = new StringBuilder(fileName.substring(0,fileName.lastIndexOf(".")));newName.append("_").append(uploadTime).append(".").append(fileExt);return newName.toString();}// 修改时，删除旧的图片public void delOldPic(String oldPicPath){if (null != oldPicPath && !"".equals(oldPicPath)){ //http://img.114piaowu.com/upload/ask/20131119_1384843321562.jpg String root = "/data/www/ImgServer/images/"; String tempPath = ""; if ( -1 != oldPicPath.lastIndexOf("/images")) { String[] names = oldPicPath.split("\\/"); String picName = names[names.length-1]; String dirPath = names[names.length-2]; tempPath = dirPath + "/" + picName; System.out.print(dirPath+","+picName); System.out.print(tempPath); } File file = new File(root + tempPath); if (file.exists()) { file.delete(); }}}//重构上传图片的名称: 名称_日期时分秒_随机数.jpgpublic void dealFileName(){String fileExt = fileFileName.substring(fileFileName.lastIndexOf(".") + 1).toLowerCase();  //得到上传文件的扩展名   SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");   String newImgName = fileFileName.substring(0,fileFileName.lastIndexOf(".")) + "_" + df.format(new Date()) + "_"            + new Random().nextInt(1000) + "." + fileExt;fileFileName = newImgName;}

2.客户端

主要方法

public String uploadFileDetail(File file,String fileName,String url,String realPath,String delOldPath) throws UnsupportedEncodingException{//url = "http://192.168.1.135:8080/servlet/UploadImageServlet"; //本地url//url = "http://192.168.1.136:8081/ImgServer/servlet/UploadImageServlet"; //windows系统其他机器urlurl += "?realPath="+realPath+"&delOldPath="+URLEncoder.encode(delOldPath, "UTF-8")+"&fileName="+URLEncoder.encode(fileName, "UTF-8");PostMethod postMethod = new PostMethodUTF8(url); try {HttpClient client = new HttpClient();Part[] parts = {new ImagePart(fileName, file)};HttpMethodParams  params = new HttpMethodParams();postMethod.setParams(params);postMethod.setRequestEntity(new MultipartRequestEntity(parts,postMethod.getParams()));client.getHttpConnectionManager().getParams().setConnectionTimeout(50000);//设置超时    int status = client.executeMethod(postMethod);    System.out.println("status:"+status);        if (status == HttpStatus.SC_OK){    System.out.println("客户端打印*********：上传成功");    return "success";    }else{    System.out.println("客户端打印*********：上传失败");    }    } catch (FileNotFoundException e) {e.printStackTrace();} catch (HttpException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}finally{postMethod.releaseConnection();}return "false";}

其中注意点，

1.url后面传中文参数乱码

封装PostMethod类，设置url编码，并且 中文参数用URLEncoder.encode(xx, "UTF-8");转码,同样服务端接收时要设置编码

public class PostMethodUTF8 extends PostMethod {    public PostMethodUTF8(String url){             super(url);         }         @Override        public String getRequestCharSet() {             return "utf-8";         }     }

2.Part 类传参数时候中文也会乱码

封装FilePart类，我为了方便改变了其中一个参数

public class ImagePart extends FilePart  {// 上传图片到铁行服务器，中文乱码解决private String fileName;// 真实的文件名称public ImagePart(String name, File file) throws FileNotFoundException {super(name, file);this.fileName = name;}protected void sendDispositionHeader(OutputStream out) throws IOException {             super.sendDispositionHeader(out);     //      String filename = getSource().getFileName();         String filename = fileName;        if (filename != null) {                 out.write(EncodingUtil.getAsciiBytes(FILE_NAME));                 out.write(QUOTE_BYTES);                 out.write(EncodingUtil.getBytes(filename, "utf-8"));                 out.write(QUOTE_BYTES);             }         }  }