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我一直致力于通过多部分帖子将数据发送到 servlet。我的 Android 代码运行良好。但是在 servlet 中，当我尝试解析请求时，会收到我不理解的错误消息。

安卓

public void myClickHandler(View view)
{       
    //String path="http://10.0.2.2:8080/upload/uploadedimg";
    String path="http://10.0.2.2:8080/ImageLocalizer/Localize";
    String pathToFile="/sdcard/building.jpg";
    text1.setText(path);

    try
    {
        HttpClient httpclient = new DefaultHttpClient();
        HttpPost httppost = new HttpPost(path);
        Bitmap bitmapOrg = BitmapFactory.decodeFile(pathToFile);
        ByteArrayOutputStream bao = new ByteArrayOutputStream();
        //compressing the image byte array
        bitmapOrg.compress(Bitmap.CompressFormat.JPEG, 90, bao);
        byte [] data = bao.toByteArray();    

        ByteArrayBody bab = new ByteArrayBody(data,"/sdcard/building.jpg");
        MultipartEntity reqEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
        reqEntity.addPart("caption", new StringBody("nabeel"));
        reqEntity.addPart("uploaded", bab);
        httppost.setEntity(reqEntity);
        HttpResponse response = httpclient.execute(httppost);
        Toast.makeText(this, "Connection Established", Toast.LENGTH_LONG).show();
        BufferedReader in = new BufferedReader(new InputStreamReader(response.getEntity().getContent())); 

        String res,msg="";
        while ( (res = in.readLine()) != null )
            msg+=res;

        text2.setText(msg);
    } catch (Exception e) {
        // TODO Auto-generated catch block
        Toast.makeText(this, e.getMessage(), Toast.LENGTH_LONG).show();
    }
}

伺服器

boolean isMultipart = ServletFileUpload.isMultipartContent(request);

if (isMultipart) {
    //List<FileItem> fileItems;
    try {
        System.out.println("There is somwething transfered");
        FileItemFactory factory = new DiskFileItemFactory();
        ServletFileUpload upload = new ServletFileUpload(factory);

        System.out.println("DISK");
        System.out.println("Iterator");
        List<FileItem> fields = upload.parseRequest(request);
        out.println("Number of fields: " + fields.size() + "<br/><br/>");

    } catch (FileUploadException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    }

尝试使用时出现以下错误upload.parseRequest(request)

org.apache.tomcat.util.http.fileupload.FileUploadException: Stream closed
    at org.apache.tomcat.util.http.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:336)
    at org.apache.tomcat.util.http.fileupload.servlet.ServletFileUpload.parseRequest(ServletFileUpload.java:129)
    at Localize.doPost(Localize.java:97)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462)
4

0 回答 0