Retrofit 传递json 和 复杂参数类型List<T>

1 首先你要定义一个接口

  @POST
  Call<String> post(@Url String url, @Body String info);

2 创建一个service

        public static RetrofitHttpService createRetrofitHttpService() {
            Retrofit retrofit = new Retrofit.Builder()
                    .baseUrl(BASE_URL + "/")
                    .addConverterFactory(StringConverterFactory.create())
                    .build();

            RetrofitHttpService Service =
                    retrofit.create(RetrofitHttpService.class);
            return Service;
        }

3 需要添加一个string转换器

package org.droidplanner.lelefly.retrofit;

import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;

import okhttp3.MediaType;
import okhttp3.RequestBody;
import okhttp3.ResponseBody;
import okio.Buffer;
import retrofit2.Converter;
import retrofit2.Retrofit;

public class StringConverterFactory extends Converter.Factory {
    private static final MediaType MEDIA_TYPE = MediaType.parse("application/json; charset=UTF-8");
    public static StringConverterFactory create() {
        return new StringConverterFactory();
    }

    private StringConverterFactory() {

    }

    @Override
    public Converter<ResponseBody, ?> responseBodyConverter(Type type, Annotation[] annotations,
                                                            Retrofit retrofit) {
        return new Converter<ResponseBody, String>(){
            @Override
            public String convert(ResponseBody value) throws IOException {
                return value.toString();
            }
        };
    }

    @Override
    public Converter<?, RequestBody> requestBodyConverter(Type type,
                                                          Annotation[] parameterAnnotations, Annotation[] methodAnnotations, Retrofit retrofit) {
        return new Converter<String, RequestBody>(){
            @Override
            public RequestBody convert(String value) throws IOException {
                Buffer buffer = new Buffer();
                Writer writer = new OutputStreamWriter(buffer.outputStream(), "utf-8");
                writer.write(value);
                writer.close();
                return RequestBody.create(MEDIA_TYPE, buffer.readByteString());
            }
        };
    }
}

4 就可以传递jsonarray了，我下面的实例代码传递的是jsonarray

        HttpUtil.post(Lconstant.base + Lconstant.ADD_UAV_MISSION,"[" +
        resultStr +"]", new ResultCallBack() {
            @Override
            public void onSuccess(String url, String model) {
                Log.i("===>>",model);
                showToast("上传服务器成功");

            }

            @Override
            public void onFailure(int statusCode, String errorMsg) {
                showToast(errorMsg);
            }
        });