详解SpringBoot定制@ResponseBody注解返回的Json格式

/*
 * Copyright 2002-2017 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.web.method.support;

import org.springframework.core.MethodParameter;
import org.springframework.lang.Nullable;
import org.springframework.web.context.request.NativeWebRequest;

/**
 * Strategy interface to handle the value returned from the invocation of a
 * handler method .
 *
 * @author Arjen Poutsma
 * @since 3.1
 * @see HandlerMethodArgumentResolver
 */
public interface HandlerMethodReturnValueHandler {

 /**
 * Whether the given {@linkplain MethodParameter method return type} is
 * supported by this handler.
 * @param returnType the method return type to check
 * @return {@code true} if this handler supports the supplied return type;
 * {@code false} otherwise
 */
 boolean supportsReturnType(MethodParameter returnType);

 /**
 * Handle the given return value by adding attributes to the model and
 * setting a view or setting the
 * {@link ModelAndViewContainer#setRequestHandled} flag to {@code true}
 * to indicate the response has been handled directly.
 * @param returnValue the value returned from the handler method
 * @param returnType the type of the return value. This type must have
 * previously been passed to {@link #supportsReturnType} which must
 * have returned {@code true}.
 * @param mavContainer the ModelAndViewContainer for the current request
 * @param webRequest the current request
 * @throws Exception if the return value handling results in an error
 */
 void handleReturnValue(@Nullable Object returnValue, MethodParameter returnType,
  ModelAndViewContainer mavContainer, NativeWebRequest webRequest) throws Exception;

}

package com.autumn.template;

import lombok.AllArgsConstructor;
import lombok.Getter;
import lombok.NoArgsConstructor;
import lombok.Setter;
import lombok.experimental.Accessors;

/**
 * JSON信息交互对象模板
 * @Author Autumn、
 * @Date 2019/4/8 23:46
 * @Description
 */
@Setter
@Getter
@AllArgsConstructor
@NoArgsConstructor
@Accessors(chain = true)
public class Result implements BaseBean {

  ......(这里只展示一些必要字段)
  /** 响应码 */
  private Integer code;
  /** 响应信息 */
  private String message;
  /** 数据 */
  pr<b style="color:transparent">本文来源gao@!dai!ma.com搞$$代^@码网*</b>ivate Object data;
  /** 请求地址 */
  private String url;

  ......
}