我想将登录信息从我的应用程序发送到 php url。因为这我的应用程序将崩溃。任何人都可以帮助我解决这个问题。
这是我的服务器登录方法。我想将数据发送到此登录方法..
Method [ public method login ] {
- Parameters [3] {
Parameter #0 [ $user_auth ]
Parameter #1 [ $application ]
Parameter #2 [ $name_value_list = Array ]
}
}
这是我在android应用程序中的login.java
public class Login extends ActionBarActivity implements View.OnClickListener {
EditText userName, pass;
Button login;
private ProgressDialog pDialog;
JSONParser jsonParser = new JSONParser();
private static final String LOGIN_URL = "http://crm.demo.com/service/v4_1/rest.php/login";
private static final String TAG_SUCCESS = "sucess";
private static final String TAG_MESSAGE = "message";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.login);
userName = (EditText) findViewById(R.id.editText_userN);
pass = (EditText) findViewById(R.id.editText_pass);
login = (Button) findViewById(R.id.btn_login);
login.setOnClickListener(this);
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Log.d("v", "Login button clicked");
new AttemptLogin().execute();
}
class AttemptLogin extends AsyncTask<String, String, String>{
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(Login.this);
pDialog.setMessage("Attempting login..");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
pDialog.dismiss();
}
@Override
protected String doInBackground(String... args) {
// Check for success tag
int success;
String user_auth[];
String user_name = userName.getText().toString();
String password = pass.getText().toString();
String application = "wakensys";
String name_value_list[];
String language = "en-au";
String notifyonsave = "true";
try {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("user_auth[]", user_name));
params.add(new BasicNameValuePair("user_auth[]", password));
params.add(new BasicNameValuePair("application", application));
params.add(new BasicNameValuePair("name_value_list[]", language));
params.add(new BasicNameValuePair("name_value_list[]", notifyonsave));
Log.d("request!", "starting..");
Log.i("NameValuePair", params.toString());
// getting product details by making HTTP request
JSONObject json = jsonParser.makeHttpRequest(LOGIN_URL, "POST", params);
if(json == null)
return null;
// check your log for json response
Log.d("Login attempt", json.toString());
// json success tag
success = json.getInt(TAG_SUCCESS);
if (success == 1) {
Log.d("Login Successful!", json.toString());
Intent i = new Intent(Login.this, Success.class);
finish();
startActivity(i);
return json.getString(TAG_MESSAGE);
}else{
Log.d("Login Failure!", json.getString(TAG_MESSAGE));
return json.getString(TAG_MESSAGE);
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog once product deleted
pDialog.dismiss();
if (file_url != null){
Toast.makeText(Login.this, file_url, Toast.LENGTH_LONG).show();
}
}
}
}
--新的日志猫---
11-21 10:33:34.467: D/v(4400): Login button clicked
11-21 10:33:34.496: D/request!(4400): starting..
11-21 10:33:34.496: I/NameValuePair(4400): [user_auth=dghj, user_auth=ccbj, name_value_list=EN]
11-21 10:33:36.528: E/JSON Parser(4400): Error parsing data org.json.JSONException: Value <pre> of type java.lang.String cannot be converted to JSONObject
11-21 10:33:36.531: E/AndroidRuntime(4400): FATAL EXCEPTION: AsyncTask #1
11-21 10:33:36.531: E/AndroidRuntime(4400): Process: com.wakensys.sugercrm, PID: 4400
11-21 10:33:36.531: E/AndroidRuntime(4400): java.lang.RuntimeException: An error occured while executing doInBackground()
11-21 10:33:36.531: E/AndroidRuntime(4400): at android.os.AsyncTask$3.done(AsyncTask.java:300)
11-21 10:33:36.531: E/AndroidRuntime(4400): at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
11-21 10:33:36.531: E/AndroidRuntime(4400): at java.util.concurrent.FutureTask.setException(FutureTask.java:222)
11-21 10:33:36.531: E/AndroidRuntime(4400): at java.util.concurrent.FutureTask.run(FutureTask.java:242)
11-21 10:33:36.531: E/AndroidRuntime(4400): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
11-21 10:33:36.531: E/AndroidRuntime(4400): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
11-21 10:33:36.531: E/AndroidRuntime(4400): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
11-21 10:33:36.531: E/AndroidRuntime(4400): at java.lang.Thread.run(Thread.java:818)
11-21 10:33:36.531: E/AndroidRuntime(4400): Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String org.json.JSONObject.toString()' on a null object reference
11-21 10:33:36.531: E/AndroidRuntime(4400): at com.wakensys.sugercrm.Login$AttemptLogin.doInBackground(Login.java:116)
11-21 10:33:36.531: E/AndroidRuntime(4400): at com.wakensys.sugercrm.Login$AttemptLogin.doInBackground(Login.java:1)
11-21 10:33:36.531: E/AndroidRuntime(4400): at android.os.AsyncTask$2.call(AsyncTask.java:288)
11-21 10:33:36.531: E/AndroidRuntime(4400): at java.util.concurrent.FutureTask.run(FutureTask.java:237)
11-21 10:33:36.531: E/AndroidRuntime(4400): ... 4 more
请帮忙！
JOSON解析器.java
public class JSONParser {
static InputStream is = null;
static JSONObject jObj = null;
static String json = "";
// constructor
public JSONParser() {
}
public JSONObject getJSONFromUrl(final String url) {
// Making HTTP request
try {
// Construct the client and the HTTP request.
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
// Execute the POST request and store the response locally.
HttpResponse httpResponse = httpClient.execute(httpPost);
// Extract data from the response.
HttpEntity httpEntity = httpResponse.getEntity();
// Open an inputStream with the data content.
is = httpEntity.getContent();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
// Create a BufferedReader to parse through the inputStream.
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 8);
// Declare a string builder to help with the parsing.
StringBuilder sb = new StringBuilder();
// Declare a string to store the JSON object data in string form.
String line = null;
// Build the string until null.
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
// Close the input stream.
is.close();
// Convert the string builder data to an actual string.
json = sb.toString();
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
// Try to parse the string to a JSON object
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
// Return the JSON Object.
return jObj;
}
// function get json from url
// by making HTTP POST or GET mehtod
public JSONObject makeHttpRequest(String url, String method,
List<NameValuePair> params) {
// Making HTTP request
try {
// check for request method
if(method == "POST"){
// request method is POST
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
httpPost.setEntity(new UrlEncodedFormEntity(params));
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
}else if(method == "GET"){
// request method is GET
DefaultHttpClient httpClient = new DefaultHttpClient();
String paramString = URLEncodedUtils.format(params, "utf-8");
url += "?" + paramString;
HttpGet httpGet = new HttpGet(url);
HttpResponse httpResponse = httpClient.execute(httpGet);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
json = sb.toString();
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
// try parse the string to a JSON object
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
// return JSON String
return jObj;
}
}
