安卓--OKHttp GET&&POST请求方式的封装工具类(内附拦截器+单例模式)

第一步:建一个类 OkHttpUtils
public class OkHttpUtils {

    private static OkHttpUtils okHttpUtils=null;
    //构造
    public OkHttpUtils() {
    }

    //单例模式
    public static OkHttpUtils getInstance() {
        if (okHttpUtils==null){
            //同步锁
            synchronized (OkHttpUtils.class){
                if (okHttpUtils == null) {
                    okHttpUtils = new OkHttpUtils();
                }
            }
        }
        //返回
        return okHttpUtils;
    };
    

//网络请求OkHttp--POST请求方式
    public  static void getPOSTJson(String url, Callback callback){
        //创建拦截器拦截器
        HttpLoggingInterceptor loggingInterceptor = new HttpLoggingInterceptor( new HttpLoggingInterceptor.Logger() {
            @Override
            public void log(String message) {
                Log.i( "zjm",message );
            }
        } );
        //指定日志拦截器模式
        loggingInterceptor.setLevel( HttpLoggingInterceptor.Level.BODY );

        //创建OKHttp的对象
        OkHttpClient build = new OkHttpClient.Builder()
                .addInterceptor( loggingInterceptor )
                .build();
        FormBody formBody = new FormBody.Builder().build();
        Request request = new Request.Builder()
                .method( "POST",formBody )
                .url( url )
                .build();
        Call call = build.newCall( request );
        call.enqueue( callback );
    }


    //网络请求OkHttp--GET请求方式
    public static  void getGetJson(String url, Callback callback){
		//创建日志拦截器
        HttpLoggingInterceptor loggingInterceptor1 = new HttpLoggingInterceptor( new 					HttpLoggingInterceptor.Logger() {
            @Override
            public void log(String message) {
                Log.i( "zjm",message );
            }
        } );
        //指定拦截器的模式
        loggingInterceptor1.setLevel( HttpLoggingInterceptor.Level.HEADERS );
        
        //创建OKHttp的对象
        OkHttpClient build = new OkHttpClient.Builder()
                .addInterceptor( loggingInterceptor1 )
                .build();
        Request request = new Request.Builder()
                .url( url )
                .build();
        Call call = build.newCall( request );
        call.enqueue( callback );
    }

-----------------------------------------OHGO添加请求头------------------------------------------------
OkGo.<String>get( Api.BANNER_URL )
                .headers( "userId",userId )
                .headers( "sesionid",sesionid )
                .execute( new StringCallback() {
                    @Override
                    public void onSuccess(Response<String> response) {
                        String message = response.body().toString();
                        callBack_lunbo.responseData( message );
                    }
                } );

}