在Kotlin进行JUnit测试(JUnit test in Kotlin)

 Play 2.5.x确实为这样做提供了支持。 
 
 请注意我的示例是在Scala中，但您可以使用Java API实现相同的功能 - 只需查看下面的文档即可。 
 
// Scala example

def accept = Action(parse.json) { implicit request =>
    render {
      case Accepts.Json() => Ok(Json.parse("""{"message" : "Thanks for sending and accepting JSON"}"""))
    }
  }
 
 通过指定您正在使用显式parse.json正文解析器，如果客户端尝试发送Content-Type的application/json以外的任何内容，则Play将自动为您生成415代码的结果。 请参阅涵盖此位的Java示例 。 
 
 case Accepts.Json()是一个提取器，用于测试媒体类型是否在范围内（即用例中的application/json ）。 如果客户端发送不同的媒体类型，那么我认为Play构建了406 Not Acceptable 。 请参阅Java示例 。 

Play 2.5.x does provide support for doing this.
 
Apologies that my example is in Scala, but you can achieve just the same with the Java API - just check the docs below.
 
// Scala example

def accept = Action(parse.json) { implicit request =>
    render {
      case Accepts.Json() => Ok(Json.parse("""{"message" : "Thanks for sending and accepting JSON"}"""))
    }
  }
 
By specifying that you are using an explicit parse.json body parser, Play will automatically build a result with a 415 code for you if the client attempts to send anything other than application/json for the Content-Type. See the Java examples that covers this bit.
 
The case Accepts.Json() is an extractor that tests that the media type is within range (ie. application/json in your use case). If the client sends a different media type then I think Play builds a 406 Not Acceptable. See the Java examples.