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如何讀取HTTP POST請求返回的XML?

[英]How to read XML returned by HTTP POST request?

不能重復我的其他問題。

我正在發送這樣的POST請求:

        String urlParameters = "a=b&c=d";
        String request = "http://www.example.com/";

        URL url = new URL(request);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();      
        connection.setDoOutput(true);
        connection.setDoInput(true);
        connection.setInstanceFollowRedirects(false); 
        connection.setRequestMethod("POST");
        connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); 
        connection.setRequestProperty("charset", "utf-8");
        connection.setRequestProperty("Content-Length", "" + Integer.toString(urlParameters.getBytes().length));
        connection.setUseCaches(false);

        DataOutputStream wr = new DataOutputStream(connection.getOutputStream());
        wr.writeBytes(urlParameters);
        wr.flush();
        wr.close();
        connection.disconnect();

如何讀取HTTP POST請求返回的xml響應? 特別是,我想將響應文件另存為.xml文件,然后讀取它。 對於我通常的GET請求,我使用以下命令:

    SAXBuilder builder = new SAXBuilder();
    URL website = new URL(urlToParse);
    ReadableByteChannel rbc = Channels.newChannel(website.openStream());
    FileOutputStream fos = new FileOutputStream("request.xml");
    fos.getChannel().transferFrom(rbc, 0, 1 << 24);
    fos.close();
    // Do the work

附錄 :我正在使用以下代碼,它可以正常工作。 但是,它忽略了任何空格和新行,並將完整的XML內容視為單行。 我如何解決它?

    InputStream is = connection.getInputStream();
    BufferedReader br = new BufferedReader(new InputStreamReader(is));
    StringBuilder sb1 = new StringBuilder();
    String line;
    while ((line = br.readLine()) != null) {
        sb1.append(line);
    }
    FileOutputStream f = new FileOutputStream("request.xml");
    f.write(sb1.toString().getBytes());
    f.close();
    br.close();

不要將ReadersreadLine()與xml數據一起使用。 使用InputStreamsbyte[]

感謝Pangea,我修改了他的代碼,現在可以使用:

    TransformerFactory transFactory = TransformerFactory.newInstance();
    Transformer t= transFactory.newTransformer();
    t.setOutputProperty(OutputKeys.METHOD, "xml");
    t.setOutputProperty(OutputKeys.INDENT,"yes");                
    Source input = new StreamSource(is);
    Result output = new StreamResult(new FileOutputStream("request.xml"));
    transFactory.newTransformer().transform(input, output);

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