Spring自定义Handler关键点

Spring自定义Handler关键点：

ServletInvocableHandlerMethod

112行：

try {

this.returnValueHandlers.handleReturnValue(

returnValue, getReturnValueType(returnValue),mavContainer,webRequest);

}

97行：

Object returnValue = invokeForRequest(webRequest,mavContainer,providedArgs);

setResponseStatus(webRequest);

HandlerMethodReturnValueHandlerComposite

77行：

HandlerMethodReturnValueHandler handler = selectHandler(returnValue, returnType);

if (handler ==null) {

thrownew IllegalArgumentException("Unknown return value type: " +returnType.getParameterType().getName());

}

handler.handleReturnValue(returnValue,returnType,mavContainer,webRequest);

返回值需要考虑MapMethodProcess

org.springframework.web.servlet.mvc.method.annotation.

RequestMappingHandlerAdapter