Throw proper exception when request parsing fails

还没有人认领这个 Issue。

Currently calling the .body method (or injecting it) and sending invalid content to the endpoint throws a generic java.text.ParseException or MapperWrongTypeException from abstract-data. The stacktrace is hard to debug since it doesn't contain any context (endpoint, invalid data, etc.)

Instead we should throw an exception that contains more context and can be properly handled in the exception handler and responded to.

1. Invalid request body throws a specific exception
2. The default exception handler, responds with 400

从 .body 方法或 body 注入所使用的请求解析路径开始，然后跟踪 ParseException 和 MapperWrongTypeException 如何到达默认异常处理器。为请求体失败添加上下文，并验证无效请求体会产生特定异常和 400 响应。

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