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| package com.example.myapplication1;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
public class MainActivity extends AppCompatActivity {
TextView et1,et2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
et1=(TextView)this.findViewById(R.id.et1);
et2=(TextView)this.findViewById(R.id.et2);
Button bt1=(Button)this.findViewById(R.id.bt1);
Button bt2=(Button)this.findViewById(R.id.bt2);
}
public void register(View view){
Intent intent = new Intent(MainActivity.this, RegisterActivity.class);
startActivity(intent);
}
public void sign(View view) {
String ac = et1.getText().toString();
String pw = et2.getText().toString();
Log.e("账号", ac);
Log.e("密码", pw);
if (!ac.equals("") && !pw.equals("")) {
// Toast.makeText(getApplication(),"用户名密码正常",Toast.LENGTH_SHORT).show();
new Thread(new Runnable() {
@Override
public void run() {
try {
String ac = et1.getText().toString();
String pw = et2.getText().toString();
Log.e("账号", ac);
Log.e("密码", pw);
String str = "http://www.tomatobz.xyz:3000/login?Accout=" + ac + "&Password=" + pw;
URL url = new URL(str);
Log.e("url", str);
HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
httpURLConnection.setRequestMethod("GET");
httpURLConnection.setReadTimeout(5000);
httpURLConnection.setConnectTimeout(5000);
InputStream inputStream = httpURLConnection.getInputStream();
InputStream in = url.openStream();//url非常重要的方法 openStream()返回输入流 用于读取网页流内容
BufferedReader br = new BufferedReader(new InputStreamReader(in));
String line = "";
String result = "";
while ((line = br.readLine()) != null) {
result += line;
Log.e("返回结果", result);
}
if (result.equals("success")) {
//通知主线程更新
makeToastByHandlerSendMessage("登录成功");
Intent intent = new Intent(MainActivity.this, home.class);
startActivity(intent);
} else {
//通知主线程更新
makeToastByHandlerSendMessage("账号或密码出错");
}
br.reset();
br.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}).start();
}
else{
Toast.makeText(getApplication(),"用户名或密码不能为空",Toast.LENGTH_SHORT).show();
}
}
static final int SUCCESS=1;
static final int FAIL=0;
Handler handler=new Handler(){
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
switch (msg.what) {
case SUCCESS:
Toast.makeText(MainActivity.this, msg.getData().get("msg").toString(), Toast.LENGTH_SHORT).show();
break;
case FAIL:
Toast.makeText(MainActivity.this, msg.getData().get("msg").toString(), Toast.LENGTH_SHORT).show();
break;
default:
super.handleMessage(msg);
}
}
};
private void makeToastByHandlerSendMessage(String msgStr) {
Message msg = new Message();
msg.what = 0;
Bundle bundle = new Bundle();
bundle.putString("msg", msgStr);
msg.setData(bundle);
handler.sendMessage(msg);
}
}
|
