安卓学习—-使用okHttp(POST方式)—登录

工具类

package com.liunan.okhttpdemo3post.Utils;import java.io.IOException;import okhttp3.MediaType;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;
import okhttp3.Response;
import okhttp3.ResponseBody;/**
 * Created by Administrator on 2016-03-27.
 */
public class HttpUtils {    OkHttpClient client = new OkHttpClient();
    public static final MediaType JSON
            = MediaType.parse("application/json; charset=utf-8");    public String login(String url, String json) throws IOException {
        //把请求的内容字符串转换为json
        RequestBody body = RequestBody.create(JSON, json);
        //RequestBody formBody = new FormEncodingBuilder()        Request request = new Request.Builder()
                .url(url)
                .post(body)
                .build();        Response response = client.newCall(request).execute();        String result = response.body().string();        return result;    }    public String bolwingJson(String username, String password) {
        return "{'username':" + username + "," + "'password':" + password + "}";
        //     "{'username':" + username + ","+"'password':"+password+"}";
    }}

Activity

package com.liunan.okhttpdemo3post;import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;import com.liunan.okhttpdemo3post.Utils.HttpUtils;import org.w3c.dom.Text;import java.io.IOException;public class MainActivity extends AppCompatActivity implements View.OnClickListener {
    private static final String TAG ="MainActivity" ;
    //用户名
    private EditText mEtUsername;
    //密码
    private EditText mEtPwd;
    //登录按键
    private Button mBtnLogin;
    private TextView mTvResult;    private String url ="http://192.168.1.102:8080/Login/login";    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);        initView();
        initListener();
    }    /**
     * 初始化组件
     */
    private void initView() {        mEtUsername = (EditText) findViewById(R.id.login_et_name);
        mEtPwd = (EditText) findViewById(R.id.login_et_pwd);        mBtnLogin = (Button) findViewById(R.id.login_btn_login);        mTvResult = (TextView) findViewById(R.id.login_tv_result);    }    /**
     * 设置监听器
     */
    private void initListener() {        mBtnLogin.setOnClickListener(this);    }    /*
    单击事件监听
     */
    @Override
    public void onClick(View v) {
        if(v==mBtnLogin){
            login();
        }
    }    /*
    登录
     */
    private void login() {        final String username = mEtUsername.getText().toString().trim();
        final String password = mEtPwd.getText().toString().trim();        if(TextUtils.isEmpty(username) || TextUtils.isEmpty(password)){            Toast.makeText(MainActivity.this, "用户名或者密码不能为空", Toast.LENGTH_SHORT).show();
            return;
        }        new Thread(){
            @Override
            public void run() {                    HttpUtils httpUtils = new HttpUtils();
                    //转换为JSON
                    String user = httpUtils.bolwingJson(username, password);                //String user ="{'username':" + username + ","+"'password':"+password+"}";                Log.d(TAG, "user:" + user);                try {
                    final String result = httpUtils.login(url, user);
                    Log.d(TAG, "结果:" + result);
                    //更新UI,在UI线程中
                    runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            if("SUCCESS".equals(result)){                                mTvResult.setText("登录成功");                            }else{
                                mTvResult.setText("登录失败");
                            }
                        }
                    });
                } catch (IOException e) {
                    e.printStackTrace();
                }            }
        }.start();    }
}