我进行了登录，但我需要知道服务器连接何时失败 ，这是我的按钮事件
login.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
usuario=(EditText)findViewById(R.id.etUsuario);
contrasena=(EditText)findViewById(R.id.etContrasena);
usuario_ws = usuario.getText().toString();
pass_ws = contrasena.getText().toString();
new HttpAsyncTask().execute(GET());
}
});
这是我的服务器响应的异步任务
private class HttpAsyncTask extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... params) {
return GET();
}
// onPostExecute displays the results of the AsyncTask.
@Override
protected void onPostExecute(String result) {
// Toast.makeText(getBaseContext(), "Received!", Toast.LENGTH_LONG).show();
// etResponse.setText(result);
Integer respuesta_ws = Integer.valueOf(result);
if (respuesta_ws>=1){
sesionIn();
}
else if (respuesta_ws==0){
sesionFail();
}
}
}
public String GET() {
String url = "http://"+ippref+":8080/WSAppInventario/webresources/inventario.users/Login/"+usuario_ws+"/"+pass_ws+"";
String result = "";
BufferedReader inStream = null;
try {
HttpClient httpClient = new DefaultHttpClient();
HttpGet httpRequest = new HttpGet(url);
HttpResponse response = httpClient.execute(httpRequest);
inStream = new BufferedReader(
new InputStreamReader(
response.getEntity().getContent()));
StringBuffer buffer = new StringBuffer();
String line = "";
//String NL = System.getProperty("line.separator");
while ((line = inStream.readLine()) != null) {
buffer.append(line);
}
inStream.close();
result = buffer.toString();
respuesta_ws = Integer.valueOf(result);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return result;
}
字符串ippref
它是一个要保留在 SharedPreferences 之前的对象
最佳答案
这应该有效
private class HttpAsyncTask extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... params) {
return GET();
}
// onPostExecute displays the results of the AsyncTask.
@Override
protected void onPostExecute(String result) {
// Toast.makeText(getBaseContext(), "Received!", Toast.LENGTH_LONG).show();
// etResponse.setText(result);
if (result=="failed"){
sesionFail();
}
else{
sesionIn();
}
}
}
public String GET() {
String url = "http://"+ippref+":8080/WSAppInventario/webresources/inventario.users/Login/"+usuario_ws+"/"+pass_ws+"";
String result = "";
BufferedReader inStream = null;
try {
HttpClient httpClient = new DefaultHttpClient();
HttpGet httpRequest = new HttpGet(url);
HttpResponse response = httpClient.execute(httpRequest);
inStream = new BufferedReader(
new InputStreamReader(
response.getEntity().getContent()));
StringBuffer buffer = new StringBuffer();
String line = "";
//String NL = System.getProperty("line.separator");
while ((line = inStream.readLine()) != null) {
buffer.append(line);
}
inStream.close();
result = buffer.toString();
respuesta_ws = Integer.valueOf(result);
} catch (Exception e) {
e.printStackTrace();
return "failed";
}
return result;
}
关于java - 我如何知道与服务器的连接是否正确？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/34968943/