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新知识

新知识

有两个接口

RequestBodyAdviceResponseBodyAdvice 在spring4中新添加的两个接口

RequestBodyAdvice接口

该接口是在获取@RequestBody参数数据之前进行处理的

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public interface RequestBodyAdvice {


boolean supports(MethodParameter methodParameter, Type targetType,
Class<? extends HttpMessageConverter<?>> converterType);


Object handleEmptyBody(Object body, HttpInputMessage inputMessage, MethodParameter parameter,
Type targetType, Class<? extends HttpMessageConverter<?>> converterType);


HttpInputMessage beforeBodyRead(HttpInputMessage inputMessage, MethodParameter parameter,
Type targetType, Class<? extends HttpMessageConverter<?>> converterType) throws IOException;


Object afterBodyRead(Object body, HttpInputMessage inputMessage, MethodParameter parameter,
Type targetType, Class<? extends HttpMessageConverter<?>> converterType);

}

ResponseBodyAdvice接口

该接口是在消息体被HttpMessageConverter消息解析器写入之前执行的

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public interface ResponseBodyAdvice<T> {


boolean supports(MethodParameter returnType, Class<? extends HttpMessageConverter<?>> converterType);


T beforeBodyWrite(T body, MethodParameter returnType, MediaType selectedContentType,
Class<? extends HttpMessageConverter<?>> selectedConverterType,
ServerHttpRequest request, ServerHttpResponse response);

}