我正在尝试从Google Flight页面获取JSON响应。我查看了以下教程，该教程解释了如何获取它link。所以我在Android中创建了一个HttpPost请求并添加了所有必需的标头我从谷歌浏览器获取模拟请求（我正在检查我的Chrome浏览器中的请求/响应）。我的问题是如何获得JSON响应。到目前为止我的代码。
public class SearchScreen extends Activity {
private static final String URL = "http://www.google.com/flights/rpc";
//"www.google.com/flights/#search;f=SJC;t=EWR,JFK,LGA;d=2012-04-05;r=2012-04-12"
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_search_screen);
new AirplaneDetailsAsyncTask().execute(URL);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.search_screen, menu);
return true;
}
private class AirplaneDetailsAsyncTask extends
AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... urls) {
DefaultHttpClient client = new DefaultHttpClient();
HttpResponse response;
HttpPost post = new HttpPost(urls[0]);
try {
post.setEntity(new StringEntity(streamToString(getAssets().open("json_payload.txt"))));
} catch (UnsupportedEncodingException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
post.addHeader("Host", "www.google.com");
post.addHeader("Content-Type", "application/json; charset=utf-8");
post.addHeader("X-GWT-Permutation",
"C8210E5F468630F84E578D8EDE10A1A0");
post.addHeader("X-GWT-Module-Base",
"http://www.google.com/flights/static/");
post.addHeader("Referer", "http://www.google.com/flights/");
post.addHeader(
"Cookie",
"PREF=ID=e2a92b3380d7d27f:U=3d554774092713bb:LD=en:TM=1358479701:LM=1380698072:DV=ItTa9H05UtgwsKnDG0OzXrRI8wzwgvK6-YzRssPfBQAAACoAp5J-Wg59AQAAAA:GM=1:S=UCXKy-x_emr9K3SO; HSID=AgVJtn-g2CDMiOMYl; SSID=A4yKK8G7fF8e5M01T; APISID=s-DKCLDgya0AD2eY/ArIOuAT3DXpIkznme; SAPISID=muzbz8j6Wy5YybG8/A3d1OIAjmhDsC_WXo; NID=67=wDEHoc3k9xdwS2WTBxz5Q0fzrmmwHphYHoKamTgFPUb17DwM-dFWJp4sJdEciRCn9RH7wdk1b97eF94zZS0IZ9SgTddQnLr5ht8Qsc2esrtU2LIlcIHyFVC9RRWs4h1f2rMCxGeWybkU_dgiqrqr2UQHkSSJSemCfxJV_FhF-gEG6b8KKjzWKzsBVtQS0gUG7g6rFZkDPDwZU-yD25Hh3-XoQkkTQoIG7k-y3pTG06-J-tUjRMNZbjBzoBN_ZYZRowSOCXJlkuSUku-SpEaDKd7IoUJ5Z3fBSzU; S=account-recovery=4KJarpZsJ5s:travel-flights=bFOuuLXsJoYhlhLnM7sMuQ; SID=DQAAAIQCAADA-EGq6XJtdkoCOaR9Dot7zk6oOuGFKSWS3t2aWMaB6rGfOleOuhydcutRWbQst5pTXflQuHHdqf8XlzHMxEdXTNDF4So282agqwLuI0b4TdEnOHKIxr1ToYtELmE5PaP-0tfDoF3NRFVSlnIfip0ty7AZGUX3oBv8ejSIn3Z-jn_Pd-Dg4Y4WOa70W9noFxkH0lok1-fk4TSUjZEhJRJPu4LydNCQFWjRJ6EMW22twsAHHTSqt92Nj4tFY9zzaJer7PIiYL7VU3SmGRwNRESR-vq-lEyDexnjoVgx5p0ck1lvGRI1CQ8RlAGSMoA0obU8fDspcQG4o2bugltVCb080aSjpi_JWyJhZOTI7dwYl8po7Z1ztf98PeS6uf2fFM1kaZ2DynIWfuDOWSh1TLsW24l3x4rIrEthH3NTd1f_lMyfyiRkMoiTKPaeqo-S1V-7_YzqJA8Us0L8q2ChW641nbEHTtURvoj0g8vNKrSfP0AgvxUb1Hmh2v2EzlHoTsAEkf8GYlCAP-VV6Z50IaNW93NUxSc-pD1TLSXL_tNqV0pG4IXJf1RD6dST2xojvZjEdznMXqTughtt1jdOp_2RaQSauOSCOUYE9v7MUmn4CxE1LfvFHW2Hq5zaErOjj5GmBSd-8n6M0BaBv2Kx7MdU3wwGgZJYVdwaTbnl1a6-BsXbUARSZIbQZ6plwUGjHGiWLvFoGY3l2YElBX9irN46Mts87A8kb2tSXuN6DOhRurdebChUkXYxcAt0OcoXIYTiTrQWr4QpPfrX1pt2imQqRTlj1E0t8nkg684tKbF6w2Fsul06Wlq1yIHFOdVffklF7BSSoFNS8oAAG-JfOYJu_-FuRQQbXlBazJUsa_DO-w");
post.addHeader("Pragma", "no-cache");
//post.addHeader("Content-Length","1255");
post.addHeader("Cache-Control", "no-cache");
String entityBody;
try {
response = client.execute(post);
int respnseCode = response.getStatusLine().getStatusCode();
switch (respnseCode) {
case 200:
HttpEntity entity = response.getEntity();
if (entity != null) {
entityBody = EntityUtils.toString(entity);
Log.d("Entity", entityBody);
}
break;
}
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
private String streamToString(InputStream inputStream ){
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
StringBuilder total = new StringBuilder();
String line;
try {
while ((line = reader.readLine()) != null) {
total.append(line);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return total.toString();
}
}
}
以下是我收到的回复字符串
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更新：指向rpc终点服务器后，我得到一个响应代码405方法不允许。