Question

单击登录按钮“尝试登录”消息仅显示，并且应用程序中没有其他活动，并且在单击按钮后，LOGCAT中显示异常“java.net.ConnectException：无法连接到/ 15000ms后127.0.0.1（端口80）：isConnected失败：ECONNREFUSED（拒绝连接）“。可能只有preexecute正在运行而不是后台任务。但问题出在哪里？

Login.java ---＆GT;

Title

............................................... ................................. JsonParser.java ----＆GT;

public class Login extends Activity {
        AutoCompleteTextView UsernameEt;
        EditText PasswordEt;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_login);
            UsernameEt = (AutoCompleteTextView) findViewById(R.id.email);
            PasswordEt = (EditText) findViewById(R.id.password);
        }

        class PostAsync extends AsyncTask<String, String, JSONObject> {
            JSONParser jsonParser = new JSONParser();

            private ProgressDialog pDialog;

           // private static final String LOGIN_URL = "http://10.0.3.2:8080/login3.php";
           // private static final String LOGIN_URL = "http://192.168.*.*/login3.php";
           private static final String LOGIN_URL = "http://127.0.0.1/login3.php";

            private static final String TAG_SUCCESS = "success";
            private static final String TAG_MESSAGE = "message";


            @Override
            protected void onPreExecute() {
                pDialog = new ProgressDialog(Login.this);
                pDialog.setMessage("Attempting login...");
                pDialog.setIndeterminate(false);
                pDialog.setCancelable(true);
                pDialog.show();
            }

            @Override
            protected JSONObject doInBackground(String... args) {

                try {

                    HashMap<String, String> params = new HashMap<>();
                    params.put("name", args[0]);
                    params.put("password", args[1]);

                    Log.d("request", "starting");

                    JSONObject json = jsonParser.makeHttpRequest(
                            LOGIN_URL, "POST", params);

                    if (json != null) {
                        Log.d("JSON result", json.toString());

                        return json;
                    }

                } catch (Exception e) {
                    e.printStackTrace();
                }

                return null;
            }

            protected void onPostExecute(JSONObject json) {

                int success = 0;
                String message = "";

                if (pDialog != null && pDialog.isShowing()) {
                    pDialog.dismiss();
                }

                if (json != null) {
                    Toast.makeText(Login.this, json.toString(),
                            Toast.LENGTH_LONG).show();

                    try {
                        success = json.getInt(TAG_SUCCESS);
                        message = json.getString(TAG_MESSAGE);
                    } catch (JSONException e) {
                        e.printStackTrace();
                    }
                }

                if (success == 1) {
                    Log.d("Success!", message);
                }else{
                    Log.d("Failure", message);
                }
            }

        }

        public void OnLogin(View view) {
            String username = UsernameEt.getText().toString();
            String password = PasswordEt.getText().toString();

            new PostAsync().execute(username, password);

        }
    }

Answer 1

使用10.0.2.2而不是127.0.0.1或localhost

无法连接到端口80

1 个答案: