Android中登录的空JSON响应
我正在使用android进行注册和从服务器登录。注册已成功完成，但登录时给出空响应 我的登录页面如下：Android中登录的空JSON响应,android,json,Android,Json,我正在使用android进行注册和从服务器登录。注册已成功完成，但登录时给出空响应 我的登录页面如下： package com.example.arunraj.locationtracker; import android.app.ProgressDialog; import android.content.Intent; import android.os.AsyncTask; import android.support.v7.app.ActionBarActivity; import a
package com.example.arunraj.locationtracker;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
public class MainActivity extends ActionBarActivity {
String L_URL= "http://safetracker-threetinker.rhcloud.com/api/login";
EditText e_user,e_pwd;
String c_username,c_password;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
e_user = (EditText) findViewById(R.id.e_user);
e_pwd = (EditText) findViewById(R.id.e_pwd);
Button b_login = (Button) findViewById(R.id.b_login);
Button b_register = (Button) findViewById(R.id.b_register);
b_login.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
c_username=e_user.getText().toString();
c_password=e_pwd.getText().toString();
LoginAsyn loginAsyn=new LoginAsyn();
loginAsyn.execute(L_URL);
//
}
});
b_register.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent i = new Intent(getApplicationContext(), RegisterActivity.class);
startActivity(i);
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it i present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
class LoginAsyn extends AsyncTask<String,Void,String>
{
private ProgressDialog nDialog;
@Override
protected void onPreExecute()
{
//progress dialog
nDialog = new ProgressDialog(MainActivity.this);
nDialog.setMessage("Loading..");
nDialog.setTitle("Login....");
nDialog.setIndeterminate(false);
nDialog.setCancelable(true);
nDialog.show();
}
@Override
protected String doInBackground(String... params) {
InputStream inputStream = null;
String result = "";
try {
// 1. create HttpClient
HttpClient httpclient = new DefaultHttpClient();
// 2. make POST request to the given URL
HttpPost httpPost = new HttpPost(params[0]);
String json = "";
// 3. build jsonObject
JSONObject jsonObject = new JSONObject();
jsonObject.put("name", c_username);
jsonObject.put("password", c_password);
// 4. convert JSONObject to JSON to String
json = jsonObject.toString();
// 5. set json to StringEntity
StringEntity se = new StringEntity(json);
// 6. set httpPost Entity
httpPost.setEntity(se);
// 7. Set some headers to inform server about the type of the content
httpPost.setHeader("Accept", "application/json");
httpPost.setHeader("Content-type", "application/json");
// 8. Execute POST request to the given URL
HttpResponse httpResponse = httpclient.execute(httpPost);
inputStream = httpResponse.getEntity().getContent();
BufferedReader bufferedReader = new BufferedReader( new InputStreamReader(inputStream));
String line = "";
while((line = bufferedReader.readLine()) != null)
result += line;
inputStream.close();
} catch (Exception e) {
}
// 11. return result
return result;
}
@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
if (nDialog.isShowing()) {
nDialog.dismiss();
}
Toast.makeText(MainActivity.this, s, Toast.LENGTH_LONG).show();
}
}
}
{
"name":"hima",
"password":"sample123"
}
{
"userId": 1,
"userName": "hima"
}
07-30 12:41:51.881 744-897/? W/InputMethodManagerService﹕ 窗口已聚焦，忽略焦点增益：com.android.internal.view.IInputMethodClient$Stub$Proxy@8173b94attribute=null，token=android.os。BinderProxy@3dcb4c75我猜你正在吞咽的
doInBackground您的URL=”http://safetracker-threetinker.rhcloud.com/api/login“它不起作用。首先检查它。首先，正如您可能知道的，它已被弃用，请使用 使用从注释中提取的以下json：
{
"name":"arya",
"password":"arya123"
}
// 8. Handle response
if (responseCode == HttpURLConnection.HTTP_OK || responseCode == HttpURLConnection.HTTP_MOVED_TEMP) { //success
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
String line;
while((line = bufferedReader.readLine()) != null)
result += line;
bufferedReader.close();
Log.d("StackOverFlow", result);
}
07-30 11:25:11.350 27868-29041/com.example.stackoverflowtestapp I/StackOverFlow﹕ POST Response Code :: 302
07-30 11:25:11.350 27868-29041/com.example.stackoverflowtestapp D/StackOverFlow﹕ {"userId":15,"userName":"arya"}
作为补充说明，如果您打算在Android上处理REST API，我建议您查看一下Pleae suggest Solutions将一些日志放在异常上，并记录httpResponse，这应该会给您一些关于发生了什么的指示。请告诉我您将internet权限放在清单
// 8. Handle response
if (responseCode == HttpURLConnection.HTTP_OK || responseCode == HttpURLConnection.HTTP_MOVED_TEMP) { //success
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
String line;
while((line = bufferedReader.readLine()) != null)
result += line;
bufferedReader.close();
Log.d("StackOverFlow", result);
}
07-30 11:25:11.350 27868-29041/com.example.stackoverflowtestapp I/StackOverFlow﹕ POST Response Code :: 302
07-30 11:25:11.350 27868-29041/com.example.stackoverflowtestapp D/StackOverFlow﹕ {"userId":15,"userName":"arya"}