Android使用OkHttp发送post请求

 public class MainActivity extends AppCompatActivity { private EditText mEt_qq; private EditText mEt_pwd; private TextView mTv_status; String path = "http://169.254.53.96:8080/web/LoginServlet"; private static final int SUCCESS = 665; private static final int FALL = 894; Handler handler=new Handler(){ @Override public void handleMessage(Message msg) { switch (msg.what) { case SUCCESS: String text= (String) msg.obj; mTv_status.setText(text); break; case FALL: Toast.makeText(MainActivity.this, "没有网", Toast.LENGTH_SHORT).show(); break; default: break; } } }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //对控件进行初始化操作 initVIew(); } private void initVIew() { mEt_qq = (EditText) findViewById(R.id.et_qq); mEt_pwd = (EditText) findViewById(R.id.et_pwd); mTv_status = (TextView) findViewById(R.id.tv_status); } /** * 使用Post进行表单(键值对)上传,完成登录 * @param view */ public void login(View view){ //得到用户输入的信息,进行非空判断 String qq = mEt_qq.getText().toString().trim(); String pwd =mEt_pwd.getText().toString().trim(); if(TextUtils.isEmpty(qq) || TextUtils.isEmpty(pwd) ){ Toast.makeText(MainActivity.this, "不能输入为空", Toast.LENGTH_SHORT).show(); return; } //1.0 创建okhttpClinet OkHttpClient okHttpClient = new OkHttpClient.Builder() .connectTimeout(10, TimeUnit.SECONDS) .readTimeout(10,TimeUnit.SECONDS) .writeTimeout(10,TimeUnit.SECONDS) .build(); FormBody formBody= new FormBody.Builder() .add("qq", qq).add("pwd", pwd) .build(); Request request= new Request.Builder() .post(formBody) .url(path) .build(); Call call = okHttpClient.newCall(request); call.enqueue(new Callback() { @Override public void onFailure(Call call, IOException e) { handler.sendEmptyMessage(FALL); } @Override public void onResponse(Call call, Response response) throws IOException { String string = response.body().string(); Message msg = Message.obtain(); msg.obj=string; msg.what=SUCCESS; handler.sendMessage(msg); } }); } }

 implementation 'com.squareup.okhttp3:okhttp:3.4.2'