spring boot自带的ResponseEntity ResponseEntity是springboot自带的返回格式封装类，使用起来也简单，和我们平时自己封装的差不多，大概的使用如下： 自己封装类 和spring boot自带的类似，返回的无非就是data，code，message，其中data是个泛型，可以存放各种数据类型。封装类如下： Data public class ResultData<T> { /** 结果状态 ,具体状态码参见ResultData.java*/ private int code; private String message; private T data; public ResultData (){ } public static <T> ResultData<T> success(T data) { ResultData<T> resultData = new ResultData<>(); resultData.setCode(HttpStatus.RC200.getCode()); resultData.setMessage(HttpStatus.RC200.getMessage()); resultData.setData(data); return resultData; } public static <T> ResultData<T> fail(int code, String message) { ResultData<T> resultData = new ResultData<>(); resultData.setCode(code); resultData.setMessage(message); return resultData; } } 自己封装的HttpStatus枚举类。其实可以使用spring boot自带的HttpStatus，只是都是英文，对开发要求较高。 @AllArgsConstructor public enum HttpStatusEnum { /**操作成功**/ SUCCESS(200,"操作成功"), /**无权访问**/ NO_PERMISSION(403,"无访问权限,请联系管理员授予权限"), /**匿名访问资源失败**/ ACCESS_FAILED(401,"匿名用户访问无权限资源时的异常"), /**服务异常**/ FAIL(500,"系统异常，请稍后重试"), INVALID_TOKEN(2001,"访问令牌不合法"), ACCESS_DENIED(2003,"没有权限访问该资源"), CLIENT_AUTHENTICATION_FAILED(1001,"客户端认证失败"), USERNAME_OR_PASSWORD_ERROR(1002,"用户名或密码错误"), UNSUPPORTED_GRANT_TYPE(1003, "不支持的认证模式"); /**自定义状态码**/ private final int code; /**自定义描述**/ private final String message; public int getCode() { return code; } public String getMessage() { return message; } } 随后就是对controller层进行统一处理，使用注解RestControllerAdvice，对返回的数据进行统一的封装后返回。 @RestControllerAdvice(basePackages = "com.nchu.weather.controller") public class ResponseAdvice implements ResponseBodyAdvice<Object> { @Autowired ObjectMapper objectMapper; @Override public boolean supports(MethodParameter returnType, Class<? extends HttpMessageConverter<?>> converterType) { return true; } @SneakyThrows @Override public Object beforeBodyWrite(Object body, MethodParameter returnType, MediaType selectedContentType, Class<? extends HttpMessageConverter<?>> selectedConverterType, ServerHttpRequest request, ServerHttpResponse response) { if(body instanceof String){ return objectMapper.writeValueAsString(ResultData.success(body)); } // 防止二次封装 if(body instanceof ResultData){ return body; } return ResultData.success(body); } } 都搞定以后，可以写几个接口试一下了。下列是示例： @RestController @RequestMapping("/weather") public class WeatherRestController { @Autowired private WeatherDataService weatherDataService; @GetMapping public WeatherVO getWeather(@RequestParam("name") String name){ WeatherResponseVO weatherResponseVO = weatherDataService.getDataByCityName(name); WeatherVO weatherVO = null; if (1000 == weatherResponseVO.getStatus()){ weatherVO = weatherResponseVO.getData(); } return weatherVO; } }

结果自动被封装 部分对错误信息的统一处理相关类看这里： https://blog.csdn.net/weixin_44632065/article/details/123031889 所使用的接口文档配置代码： https://blog.csdn.net/weixin_44632065/article/details/122971425