[英]How to read XML returned by HTTP POST request?
不能重复我的其他问题。
我正在发送这样的POST
请求:
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();
如何读取HTTP POST
请求返回的xml响应? 特别是,我想将响应文件另存为.xml文件,然后读取它。 对于我通常的GET
请求,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
附录 :我正在使用以下代码,它可以正常工作。 但是,它忽略了任何空格和新行,并将完整的XML内容视为单行。 我如何解决它?
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();
不要将Readers
和readLine()
与xml数据一起使用。 使用InputStreams
和byte[]
。
感谢Pangea,我修改了他的代码,现在可以使用:
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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