package com.github.hunter0x7c7.sync.model.server.net.converters;
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import okhttp3.ResponseBody;
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import retrofit2.Converter;
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import retrofit2.Retrofit;
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import java.io.IOException;
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import java.lang.annotation.Annotation;
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import java.lang.reflect.Type;
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/**
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* ================================================================
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* <p>
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* 版 权： HunterHuang(c)2020
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* <p>
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* 作 者： Hunter_1125607007@QQ.COM
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* <p>
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* 版 本： V1.0
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* <p>
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* 创建日期： 2020/6/23 21:05
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* <p>
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* 描 述：解决当接口请求的数据为空，返回没有响应体body，只有响应头header，content-length为0的Response，这时候GsonConverterFactory就解析异常
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* <p>
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* <p>
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* 修订历史：
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* <p>
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* ================================================================
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*/
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public class NullOnEmptyConverterFactory extends Converter.Factory {
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@Override
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public Converter<ResponseBody, ?> responseBodyConverter(Type type, Annotation[] annotations, Retrofit retrofit) {
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final Converter<ResponseBody, ?> delegate = retrofit.nextResponseBodyConverter(this, type, annotations);
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return new Converter<ResponseBody, Object>() {
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@Override
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public Object convert(ResponseBody body) throws IOException {
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if (body.contentLength() == 0) return null;
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return delegate.convert(body);
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}
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};
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}
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}
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