Retrofit进行post提交json数据

定义api

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对象转成jsonstr然后body传参

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引入retrofit相关依赖 <dependency> <groupId>com.squareup.retrofit2</groupId> <artifactId>retrofit</artifactId> <version>2.4.0</version> </dependency> <dependency> <groupId>com.squareup.retrofit2</groupId> <artifactId>converter-jackson</artifactId> <version>2.4.0</version> </dependency>