Java 如何解析从OkHttp返回的XML?
这是我使用OkHttp的异步Get的OkHttp Post表单参数方法Java 如何解析从OkHttp返回的XML?,java,android,okhttp,android-xmlpullparser,Java,Android,Okhttp,Android Xmlpullparser,这是我使用OkHttp的异步Get的OkHttp Post表单参数方法 public Call postGetCountries(Callback callback) { RequestBody body = new FormEncodingBuilder() .add("op", "op") .build(); Log.d(TAG_PARAMS, "op=sgetcountrylist, app_type=1"); Request r
public Call postGetCountries(Callback callback) {
RequestBody body = new FormEncodingBuilder()
.add("op", "op")
.build();
Log.d(TAG_PARAMS, "op=sgetcountrylist, app_type=1");
Request request = new Request.Builder()
.url(GATEWAY_URL)
.post(body)
.build();
Call call = CLIENT.newCall(request);
call.enqueue(callback);
return call;
}
这是我的自定义回调
private class GetCountriesCallback implements Callback {
@Override
public void onFailure(Request request, IOException e) {
Log.e("OkHttp", e.getMessage());
}
@Override
public void onResponse(Response response) throws IOException {
Log.d("PASSED", "PASS");
Log.d(Connection.TAG_RETURN, response.body().string());
try {
InputStream is = response.body().byteStream();
List test = connectionParser.parse(is, "op");
} catch (XmlPullParserException e) {
Log.e("PARSE ERROR", e.getMessage());
}
}
}
这是我的实例化解析方法
public List parse(InputStream in, String op) throws XmlPullParserException, IOException {
try {
XmlPullParser parser = Xml.newPullParser();
parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, false);
parser.setInput(in, null);
parser.nextTag();
return readFeed(parser, op);
} finally {
in.close();
}
}
我目前正在测试它是否有效不幸的是,我收到了
10-06 11:54:42.492 6336-6892/ D/PASSED: PASS
10-06 11:54:42.692 6336-6892/ E/PARSE ERROR: Invalid stream or encoding: java.io.IOException: closed (position:START_DOCUMENT null@1:1) caused by: java.io.IOException: closed
这是我在活动的onCreate上用于启动整个流程的内容:
private Connection connect = Connection.getInstance();
connect.postGetCountries(new GetCountriesCallback());
我不明白为什么InputStream会关闭。可能发生了两件事。首先,你只能读一次正文。如果你想多次阅读,你需要把结果存储在某个地方。你在读尸体两遍,一次在这里-- 然后在这里-- 当您开始解析时,您已经耗尽了流中的可用输入。快速解决方案是删除log语句
另一件可能会绊倒您或将来可能绊倒您的事情是
onResponse
,即使在HTTP返回错误代码的情况下也会调用它。您应该检查响应
或方法,以确定是否应该尝试解析响应。这将返回带有Log.d(Connection.TAG_RETURN, response.body().string());
InputStream is = response.body().byteStream();
List test = connectionParser.parse(is, "op");