Question

我正在尝试通过HTTP从Eclipse-PlugIn Client上传文件。当我使用HTTPrequest的getOutputStream添加我的文件时，文本文件的连接失败，包括字符串“class”。如果文件中没有“class”，则连接正常。我

不知道为什么会这样。在服务器端，文件将被上传，链接缩短并可以打开。除了文本包含“类”之外，一切都正常应用。

Answer 1

确保使用form-multipart encoded POST，如下例所示：

    final String CHARSET = "ISO-8859-1";
    final String CRLF = "\r\n";
    String formFieldName = "uploadfile";
    String fileName = "upload.jpeg";
    String fileContentType = "image/jpeg";
    URL url = new URL("http://localhost");
    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
    connection.setRequestMethod("POST");
    connection.setDoOutput(true);
    connection.setDoInput(true); // if input is expected
    String boundary = "--------------------"+System.currentTimeMillis();
    StringBuilder postData = new StringBuilder();
    postData.append("--").append(boundary).append(CRLF);
    postData.append("Content-Disposition: form-data; name=\"").append(formFieldName).append("\"; filename=\"").append(fileName).append("\"").append(CRLF);
    postData.append("Content-Type: ").append(fileContentType).append(CRLF);
    postData.append(CRLF).append(new String(bytes, CHARSET)).append(CRLF);
    postData.append("--").append(boundary).append("--").append(CRLF);   
    connection.setRequestProperty("Content-Type", "multipart/form-data; boundary="+boundary);
    connection.setRequestProperty("Content-Length", Integer.toString(postData.length()));
    connection.setFixedLengthStreamingMode(postData.length());
    OutputStreamWriter out = new OutputStreamWriter(connection.getOutputStream(), CHARSET);
    out.write(postData.toString());
    out.close();
    assert(connection.getResponseCode() == HttpURLConnection.HTTP_OK);
    // if input is expected
    BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream(), CHARSET));
    String line;
    while ((line = in.readLine()) != null) {
        System.out.println(line);
    }

干杯，最大

当文件包含＆＃34;类＃34时，使用HTTP从Java上传不起作用;

1 个答案: