SpringBoot后端统一格式返回

GitHub地址

统一结果一般形式:

  • 状态码
  • 描状态码述
  • 响应数据

 结果类枚举:

@Getter
public enum ResultEnum {

    SUCCESS(200,"成功"),
    UNEXIST_URL(404,"URL不存在"),
    UNEXIST_ERROR(404,"用户不存在或密码有误"),
    UNKNOWN_ERROR(520,"未知错误"),
    SYSTEM_ERROR(500, "系统异常"),
    PARAM_ERROR(201,"参数错误"),
    NULL_POINTER(202,"空指针异常");

    // 响应状态码
    private Integer code;
    // 响应信息
    private String message;

    ResultEnum(Integer code, String message) {
        this.code = code;
        this.message = message;
    }

}
View Code

统一结果类:

@Accessors(chain = true)
@Data
public class Result {
    // 响应码
    private Integer code;

    // 响应消息
    private String message;

    // 响应数据
    private Map<String, Object> data = new HashMap<>();

    // 私有构造器
    private Result() {

    }

    // 通用成功
    public static Result ok() {
        return new Result()
                .setCode(ResultEnum.SUCCESS.getCode())
                .setMessage(ResultEnum.SUCCESS.getMessage());
    }

    // 通用失败
    public static Result error() {
        return new Result()
                .setCode(ResultEnum.UNKNOWN_ERROR.getCode())
                .setMessage(ResultEnum.UNKNOWN_ERROR.getMessage());
    }

    // 自定义返回信息
    public static Result setResult(ResultEnum result) {
        return new Result()
                .setCode(result.getCode())
                .setMessage(result.getMessage());
    }

    /** ------------使用链式编程,返回类本身-----------**/
    // 自定义返回数据
    public Result data(Map<String, Object> map) {
        this.setData(map);
        return this;
    }

    // 通用设置data
    public Result data(String key,Object value) {
        this.data.put(key, value);
        return this;
    }

    // 自定义状态信息
    public Result message(String message) {
        this.setMessage(message);
        return this;
    }

    // 自定义状态码
    public Result code(Integer code) {
        this.setCode(code);
        return this;
    }

}
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Controller统一结果返回:

统一异常处理:

@ControllerAdvice :该注解为统一异常处理的核心

自定义全局异常:

@Data
@ToString
public class CustomerDefinedException extends RuntimeException{

    private Integer code;

    public CustomerDefinedException(Integer code, String message) {
        super(message);
        this.code = code;
    }

    public CustomerDefinedException(ResultEnum resultEnum) {
        super(resultEnum.getMessage());
        this.code = resultEnum.getCode();
    }

}
View Code

统一异常处理器:

@Slf4j
@ControllerAdvice
public class GloablExceptionHandler {

    /**-------- 通用异常 --------**/
    @ExceptionHandler(Exception.class)
    @ResponseBody
    public Result error(Exception e) {
        log.error("通用异常:" + e.getMessage());
        return Result.setResult(ResultEnum.UNKNOWN_ERROR);
    }

    /**-------- 空指针异常 --------**/
    @ExceptionHandler(NullPointerException.class)
    @ResponseBody
    public Result error(NullPointerException e) {
        log.error("空指针异常:" + e.getMessage());
        System.out.println("空指针异常:" + e.getMessage());
        return Result.setResult(ResultEnum.NULL_POINTER);
    }

    /**-------- 运行异常 --------**/
    @ExceptionHandler(Throwable.class)
    @ResponseBody
    public Result error(Throwable e) {
        log.error("运行异常:" + e.getMessage());
        System.out.println("运行异常:" + e.getMessage());
        return Result.setResult(ResultEnum.SYSTEM_ERROR);
    }

    /**-------- 自定义异常 --------**/
    @ExceptionHandler(CustomerDefinedException.class)
    @ResponseBody
    public Result error(CustomerDefinedException e) {
        log.error("自定义异常:" + e.getMessage());
        return Result.error().message(e.getMessage()).code(e.getCode());
    }

    /**-------- 算法异常 --------**/
    @ExceptionHandler(ArithmeticException.class)
    @ResponseBody
    public Result error(ArithmeticException e) {
        log.error("算法异常:" + e.getMessage());
        return Result.error().message(e.getMessage());
    }

    /**-------- HTTP请求异常 --------**/
    @ExceptionHandler(HttpRequestMethodNotSupportedException.class)
    @ResponseBody
    public Result error(HttpRequestMethodNotSupportedException e) {
        log.error("HTTP请求异常:" + e.getMessage());
        return Result.error().message(e.getMessage());
    }

    /**-------- 数据库操作异常 --------**/
    @ExceptionHandler(DataAccessException.class)
    @ResponseBody
    public Result error(DataAccessException e) {
        log.error("数据库操作异常:" + e.getMessage());
        return Result.error().message(e.getMessage());
    }

}
View Code

统一error处理(Web断跳404,500和error页面,非Web端统一JSON结果返回)

@Controller
public class ErrorController implements org.springframework.boot.web.servlet.error.ErrorController {

    @Override
    public String getErrorPath() {
        return "/error";
    }

    //针对浏览器端error异常处理--跳转403、404、500、error页面
    @RequestMapping(value = "/error", produces = "text/html")
    public String errorPageHandler(HttpServletResponse response) {
        int status = response.getStatus();
        switch (status) {
            case 403:
                return "403";
            case 404:
                return "404";
            case 500:
                return "500";
        }
        return "error";
    }

    //针对非浏览器端error异常处理(Postman,APP)--统一返回JSON结果
    @RequestMapping("/error")
    @ResponseBody
    public Result handleError(HttpServletRequest request) {
        //获取statusCode:401,404,500
        Integer statusCode = (Integer) request.getAttribute("javax.servlet.error.status_code");
        return Result.setResult(ResultEnum.UNEXIST_URL).setCode(statusCode);
    }

}
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Web端跳404页面

非Web端统一JSON格式返回

 

posted on 2020-04-04 00:08  陌生街中吹起褪色故梦  阅读(419)  评论(0编辑  收藏  举报