spring全局异常处理

迷南。 2022-11-27 10:15 159阅读 0赞

### 工具类 ###

import com.fasterxml.jackson.annotation.JsonInclude;
    
    /**
     * Json响应对象类
     * @author YorkHwang
     * @since 2017-06-21
     */
    public class JsonResponse<T>{
    
        //成功
        public static final int SC_SUCCESS = 200;
        //服务端异常
        public static final int SC_SERVER_ERROR = 500;
        //客户端异常
        public static final int SC_CLIENT_ERROR = 400;
    
        public static final String MSG_SUCCESS = "success";
        public static final String MSG_SERVER_ERROR = "服务端异常,请联系管理员";
    
        private int code = SC_SUCCESS;
    
        @JsonInclude(JsonInclude.Include.NON_NULL)
        private String msg;
    
        @JsonInclude(JsonInclude.Include.NON_NULL)
        private T data = null;
    
        public JsonResponse() {
        }
    
        public int getCode() {
            return code;
        }
    
        public JsonResponse<T> setCode(int code) {
            this.code = code;
            return this;
        }
    
        public String getMsg() {
            return msg;
        }
    
        public JsonResponse<T> setMsg(String msg) {
            this.msg = msg;
            return this;
        }
    
        public T getData() {
            return data;
        }
    
    
        public JsonResponse<T> setData(T data) {
            this.data = data;
            return this;
        }
    
        public boolean succeed(){
            return this.code == SC_SUCCESS;
        }
    
    
        public static <T> JsonResponse success(T data) {
            return success(data, MSG_SUCCESS);
        }
    
        public static <T> JsonResponse success(T data, String message) {
            return new JsonResponse().setCode(SC_SUCCESS).setData(data).setMsg(message);
        }
    
        public static <T> JsonResponse serverError(String message) {
            return new JsonResponse().setCode(SC_SERVER_ERROR).setMsg(message);
        }
    
    
        public static <T> JsonResponse serverError() {
            return new JsonResponse().setCode(SC_SERVER_ERROR).setMsg(MSG_SERVER_ERROR);
        }
    
        public static <T> JsonResponse parameterError(String message) {
            return new JsonResponse().setCode(SC_CLIENT_ERROR).setMsg(message);
        }
    
    }

public class BusinessException extends RuntimeException {
        private static final long serialVersionUID = 1L;
    
        protected final String    code;
    
        public BusinessException() {
            this.code = null;
        }
    
        public BusinessException(final String message) {
            super(message);
            this.code = null;
        }
    
        public BusinessException(final Throwable cause) {
            super(cause);
            this.code = null;
        }
    
        public BusinessException(final String message, final Throwable cause) {
            super(message, cause);
            this.code = null;
        }
    
        public BusinessException(final String code, final String message) {
            super(message);
            this.code = code;
        }
    
        public BusinessException(final String code, final String message, final Throwable cause) {
            super(message, cause);
            this.code = code;
        }
    
        public String getCode() {
            return this.code;
        }
    
    }

### 全局异常处理类 ###

import org.springframework.web.bind.annotation.ExceptionHandler;
    import org.springframework.web.bind.annotation.ResponseBody;
    import org.springframework.web.bind.annotation.RestControllerAdvice;
    
    import lombok.extern.slf4j.Slf4j;
    
    @Slf4j
    @RestControllerAdvice
    public class ExceptionConfig {
    
    	@ExceptionHandler
    	@ResponseBody
    	public Object BusinessExceptionHandler(BusinessException e) {
    		log.error("======================运行时异常信息======================", e);
    		JsonResponse json = JsonResponse.serverError().setMsg(e.getMessage());
    		return json;
    	}
    	@ExceptionHandler
    	@ResponseBody
    	public Object ExceptionHandler(Exception e) {
    		log.error("======================Exception异常信息======================", e);
    		JsonResponse json = JsonResponse.serverError().setMsg(e.getMessage());
    		return json;
    	}
    	/*
    	 * @ExceptionHandler
    	 * 
    	 * @ResponseBody public Object ExceptionHandler(Exception e) { if(e instanceof
    	 * ArithmeticException) { log.error(
    	 * "======================ArithmeticException异常信息======================",e);
    	 * JsonResponse json = JsonResponse.serverError().setMsg("算数异常。"); return json;
    	 * }else if(e instanceof NullPointerException) { log.error(
    	 * "======================NullPointerException异常信息======================",e);
    	 * JsonResponse json = JsonResponse.serverError().setMsg("空指针异常。"); return json;
    	 * }else if(e instanceof BindException) { log.error(
    	 * "======================NullPointerException异常信息======================",e);
    	 * JsonResponse json = JsonResponse.serverError().setMsg("对象校验异常。"); return
    	 * json; }else {
    	 * log.error("======================Exception异常信息======================",e);
    	 * JsonResponse json = JsonResponse.serverError().setMsg(e.getMessage()); return
    	 * json; } }
    	 */
    }

### controller测试类 ###

import javax.validation.Valid;
    
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    import com.ctx.bean.Student;
    
    @RestController
    public class StudentController {
    	@GetMapping("/fun")
    	public Student fun(@Valid Student student) {
    		int a=1/0;
    		return student;
    	}
    }

### 实体类 ###

import javax.validation.constraints.NotBlank;
    import javax.validation.constraints.NotNull;
    
    import lombok.Data;
    
    @Data
    public class Student {
    	@NotBlank(message = "学号不能为空。")
    	private String no;
    	@NotBlank(message = "姓名不能为空。")
    	private String name;
    	@NotNull
    	private Integer  age;
    }

### 请求测试 ###

#测试参数校验
    http://localhost:8080/fun?no=1&name=zhangsan
    #测试方法内部异常
    http://localhost:8080/fun?no=1&name=zhangsan&age=2