改造2中的'com.google.code.gson:gson:2.6.1'依赖项在拥有自己的gson转换器时起什么作用? [英] What is the role of 'com.google.code.gson:gson:2.6.1' dependency in retrofit 2 when it has its own gson converter?

问题描述

// Retrofit
compile 'com.squareup.retrofit2:retrofit:2.1.0'

// JSON Parsing
compile 'com.google.code.gson:gson:2.6.1'
compile 'com.squareup.retrofit2:converter-gson:2.1.0'

我的问题是关于添加的第二个和第三个依赖项.我知道它与JSON转换有关.如果添加了第三个依赖项，是否仍然需要第二个依赖项?

My question is regarding the second and third dependency added. I do understand it is related to JSON conversion. If the third dependency is added,would the second dependency still be needed?

我已经看到它们都被添加到几个示例中.例如: https://www.androidhive.info/2016/05/android-working-with-retrofit-http-library/ https://code.tutsplus.com/tutorials/sending-data-with-retrofit-2-http-client-for-android--cms-27845

I have seen them both being added on several examples. For e.g: https://www.androidhive.info/2016/05/android-working-with-retrofit-http-library/ https://code.tutsplus.com/tutorials/sending-data-with-retrofit-2-http-client-for-android--cms-27845

推荐答案

在源，其中包含Gson的依赖项.

At the source of Retrofit Gson contverter library, there is a dependency of Gson.

<dependency>
  <groupId>com.google.code.gson</groupId>
  <artifactId>gson</artifactId>
</dependency>

因此，当您将 com.squareup.retrofit2:converter-gson 作为依赖项时， com.google.code.gson:gson 将自动包含.

So, when you include com.squareup.retrofit2:converter-gson as your dependency, com.google.code.gson:gson will be automatically included.

因此，您无需显式包括 Gson 依赖项.

So, you will not need to include the Gson dependency explicitly.

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