Retrofit+okhttp基本使用

来源：互联网发布：米桶什么牌子好知乎编辑：程序博客网时间：2024/05/17 03:08

1、导入必要jar包

compile ‘com.squareup.retrofit2:retrofit:2.0.0-beta4’//Retrofit2所需要的包

compile ‘com.squareup.retrofit2:converter-gson:2.0.0-beta4’//ConverterFactory的Gson依赖包

compile ‘com.squareup.retrofit2:converter-scalars:2.0.0-beta4’//ConverterFactory的String依赖包

compile ‘com.google.code.gson:gson:2.2.4’ //gson解析依赖jar包

compile ‘com.squareup.okhttp3:okhttp:3.4.2’ //okhttp 的依赖包

compile ‘com.squareup.okio:okio:1.11.0’ //okhttp 的依赖包

2、创建请求接口

GET请求:

public interface RequestServerInterface {    @GET("{ie}{oe}{wd}{tn}{ch}")    Call<String> getString(@Path("ie") String ie, @Path("oe") String oe, @Path("wd") String wd, @Path("tn") String tn, @Path("ch") String ch);}

POST请求: (@POST中的参数是:与baseUrl组合形成请求url)

public interface RequestServerInterface {    @POST("/xxx")    Call<String> getString(@Query("username" String username),@Query("password" String password));}

3、创建Retrofit对象

Retrofit retrofit = new Retrofit.Builder()                //要以/结尾                .baseUrl("https://www.baidu.com/")                //字符串返回值                .addConverterFactory(ScalarsConverterFactory.create())                //Json实体类返回值                .addConverterFactory(GsonConverterFactory.create())                .build();        RequestServerInterface serverInterface = retrofit.create(RequestServerInterface.class);        Call<String> call = serverInterface.getString("utf8", "utf8", "Android开发", "98012088_5_dg", "1");        call.enqueue(new Callback<String>() {            @Override            public void onResponse(Call<String> call, Response<String> response) {                Log.i(TAG, "sucess：" + response.body().toString());            }            @Override            public void onFailure(Call<String> call, Throwable t) {                t.printStackTrace();            }        });

4、上面的String泛型可以改为实体类

访问网址：的时候会有这种异常

11-27 12:09:58.909 6031-6031/com.example.administrator.retrofit_ W/System.err: java.io.EOFException11-27 12:09:58.909 6031-6031/com.example.administrator.retrofit_ W/System.err:     at okio.RealBufferedSource.require(RealBufferedSource.java:59)11-27 12:09:58.909 6031-6031/com.example.administrator.retrofit_ W/System.err:     at okio.RealBufferedSource.readIntLe(RealBufferedSource.java:251)11-27 12:09:58.909 6031-6031/com.example.administrator.retrofit_ W/System.err:     at okio.GzipSource.consumeTrailer(GzipSource.java:173)11-27 12:09:58.909 6031-6031/com.example.administrator.retrofit_ W/System.err:     at okio.GzipSource.read(GzipSource.java:92)11-27 12:09:58.909 6031-6031/com.example.administrator.retrofit_ W/System.err:     at okio.RealBufferedSource.read(RealBufferedSource.java:45)11-27 12:09:58.909 6031-6031/com.example.administrator.retrofit_ W/System.err:     at okio.ForwardingSource.read(ForwardingSource.java:35)11-27 12:09:58.910 6031-6031/com.example.administrator.retrofit_ W/System.err:     at retrofit2.OkHttpCall$ExceptionCatchingRequestBody$1.read(OkHttpCall.java:281)11-27 12:09:58.910 6031-6031/com.example.administrator.retrofit_ W/System.err:     at okio.Buffer.writeAll(Buffer.java:996)11-27 12:09:58.910 6031-6031/com.example.administrator.retrofit_ W/System.err:     at okio.RealBufferedSource.readByteArray(RealBufferedSource.java:106)11-27 12:09:58.910 6031-6031/com.example.administrator.retrofit_ W/System.err:     at okhttp3.ResponseBody.bytes(ResponseBody.java:128)11-27 12:09:58.910 6031-6031/com.example.administrator.retrofit_ W/System.err:     at okhttp3.ResponseBody.string(ResponseBody.java:154)11-27 12:09:58.910 6031-6031/com.example.administrator.retrofit_ W/System.err:     at retrofit2.converter.scalars.ScalarResponseBodyConverters$StringResponseBodyConverter.convert(ScalarResponseBodyConverters.java:30)11-27 12:09:58.910 6031-6031/com.example.administrator.retrofit_ W/System.err:     at retrofit2.converter.scalars.ScalarResponseBodyConverters$StringResponseBodyConverter.convert(ScalarResponseBodyConverters.java:26)11-27 12:09:58.910 6031-6031/com.example.administrator.retrofit_ W/System.err:     at retrofit2.OkHttpCall.parseResponse(OkHttpCall.java:213)11-27 12:09:58.910 6031-6031/com.example.administrator.retrofit_ W/System.err:     at retrofit2.OkHttpCall$1.onResponse(OkHttpCall.java:109)

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