Retrofit入门

1   Retrofit retrofit = new Retrofit.Builder()
                            .addConverterFactory(ScalarsConverterFactory.create())  //请求返回字符串，如需返回对象，需使用converter-gson
                            .baseUrl("http://www.baidu.com").build();
   DataService service = retrofit.create(DataService.class);  

 public interface DataService {
     @GET("/")
     Call<String> getData();
 }

 Call<String> data = service.getData();
  //String msg=data.execute().body().toString();//同步执行

　　//异步执行
　  data.enqueue(new Callback<String>() {
          @Override
          public void onResponse(Call<String> call, Response<String> response) {

          }
          @Override
          public void onFailure(Call<String> call, Throwable t) {

          }
          });

• Gson: com.squareup.retrofit2:converter-gson
• Jackson: com.squareup.retrofit2:converter-jackson
• Moshi: com.squareup.retrofit2:converter-moshi
• Protobuf: com.squareup.retrofit2:converter-protobuf
• Wire: com.squareup.retrofit2:converter-wire
• Simple XML: com.squareup.retrofit2:converter-simplexml
• Scalars (primitives, boxed, and String): com.squareup.retrofit2:converter-scalars