1

src/main/java/com/stu/stusystem/common/ApiResult.java

 package com.stu.stusystem.common;
 
+import com.stu.stusystem.exception.CommonEnum;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import lombok.*;
@@ -25,7 +26,7 @@ public class ApiResult<T> implements Serializable {
     private Boolean success;
 
     @ApiModelProperty(value = "状态码", required = true)
-    private int code;
+    private Integer code;
 
     @ApiModelProperty(value = "消息", required = true)
     private String message;
@@ -33,13 +34,13 @@ public class ApiResult<T> implements Serializable {
     @ApiModelProperty(value = "返回数据")
     private T data;
 
-    public ApiResult(Boolean success, int code, String message) {
+    public ApiResult(Boolean success, Integer code, String message) {
         this.success = success;
         this.code = code;
         this.message = message;
     }
 
-    public ApiResult(int code, String message) {
+    public ApiResult(Integer code, String message) {
         this.success = false;
         this.code = code;
         this.message = message;
@@ -104,7 +105,14 @@ public class ApiResult<T> implements Serializable {
     /**
      * 错误
      */
-    public static <T> ApiResult<T> error(int code, String message) {
+    public static <T> ApiResult<T> error(CommonEnum e) {
+        return new ApiResult<T>(false, 500, e.getResultMsg());
+    }
+
+    /**
+     * 错误
+     */
+    public static <T> ApiResult<T> error(Integer code, String message) {
         return new ApiResult<T>(false, code, message);
     }
 }

src/main/java/com/stu/stusystem/exception/BaseErrorInfoInterface.java

+package com.stu.stusystem.exception;
+
+/**
+ * 异常信息接口
+ */
+public interface BaseErrorInfoInterface {
+    /**
+     * 错误码
+     */
+    Integer getResultCode();
+
+    /**
+     * 错误描述
+     */
+    String getResultMsg();
+}
\ No newline at end of file

src/main/java/com/stu/stusystem/exception/BizException.java

+package com.stu.stusystem.exception;
+
+/**
+ * @author: cxt
+ * @time: 2021/3/10
+ * 自定义异常类
+ */
+public class BizException extends RuntimeException {
+
+    private static final long serialVersionUID = 1L;
+
+    /**
+     * 错误码
+     */
+    protected String errorCode;
+    /**
+     * 错误信息
+     */
+    protected String errorMsg;
+
+    public BizException() {
+        super();
+    }
+
+    public BizException(BaseErrorInfoInterface errorInfoInterface) {
+        super(errorInfoInterface.getResultCode());
+        this.errorCode = errorInfoInterface.getResultCode();
+        this.errorMsg = errorInfoInterface.getResultMsg();
+    }
+
+    public BizException(BaseErrorInfoInterface errorInfoInterface, Throwable cause) {
+        super(errorInfoInterface.getResultCode(), cause);
+        this.errorCode = errorInfoInterface.getResultCode();
+        this.errorMsg = errorInfoInterface.getResultMsg();
+    }
+
+    public BizException(String errorMsg) {
+        super(errorMsg);
+        this.errorMsg = errorMsg;
+    }
+
+    public BizException(String errorCode, String errorMsg) {
+        super(errorCode);
+        this.errorCode = errorCode;
+        this.errorMsg = errorMsg;
+    }
+
+    public BizException(String errorCode, String errorMsg, Throwable cause) {
+        super(errorCode, cause);
+        this.errorCode = errorCode;
+        this.errorMsg = errorMsg;
+    }
+
+
+    public String getErrorCode() {
+        return errorCode;
+    }
+
+    public void setErrorCode(String errorCode) {
+        this.errorCode = errorCode;
+    }
+
+    public String getErrorMsg() {
+        return errorMsg;
+    }
+
+    public void setErrorMsg(String errorMsg) {
+        this.errorMsg = errorMsg;
+    }
+
+    public String getMessage() {
+        return errorMsg;
+    }
+
+    @Override
+    public Throwable fillInStackTrace() {
+        return this;
+    }
+
+}
\ No newline at end of file

src/main/java/com/stu/stusystem/exception/CommonEnum.java

+package com.stu.stusystem.exception;
+
+/**
+ * 异常枚举类
+ */
+public enum CommonEnum implements BaseErrorInfoInterface {
+    // 数据操作错误定义
+    SUCCESS("200", "成功!"),
+    BODY_NOT_MATCH("400", "请求的数据格式不符!"),
+    SIGNATURE_NOT_MATCH("401", "请求的数字签名不匹配!"),
+    NOT_FOUND("404", "未找到该资源!"),
+    INTERNAL_SERVER_ERROR("500", "服务器内部错误!"),
+    SERVER_BUSY("503", "服务器正忙，请稍后再试!");
+
+    /**
+     * 错误码
+     */
+    private String resultCode;
+
+    /**
+     * 错误描述
+     */
+    private String resultMsg;
+
+    CommonEnum(String resultCode, String resultMsg) {
+        this.resultCode = resultCode;
+        this.resultMsg = resultMsg;
+    }
+
+    @Override
+    public String getResultCode() {
+        return resultCode;
+    }
+
+    @Override
+    public String getResultMsg() {
+        return resultMsg;
+    }
+
+}

src/main/java/com/stu/stusystem/exception/GlobalExceptionHandler.java

+package com.stu.stusystem.exception;
+
+import com.stu.stusystem.common.ApiResult;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+import javax.servlet.http.HttpServletRequest;
+
+/**
+ * @author: cxt
+ * @time: 2021/3/10
+ * 全局异常处理
+ */
+@ControllerAdvice
+@Slf4j
+public class GlobalExceptionHandler {
+
+    /**
+     * 处理自定义的业务异常
+     * @param req
+     * @param e
+     * @return
+     */
+    @ExceptionHandler(value = BizException.class)
+    @ResponseBody
+    public ApiResult bizExceptionHandler(HttpServletRequest req, BizException e){
+        log.error("发生业务异常！原因是：{}",e.getErrorMsg());
+        return ApiResult.error(Integer.parseInt(e.getErrorCode()),e.getErrorMsg());
+    }
+
+    /**
+     * 处理空指针的异常
+     * @param req
+     * @param e
+     * @return
+     */
+    @ExceptionHandler(value =NullPointerException.class)
+    @ResponseBody
+    public ApiResult exceptionHandler(HttpServletRequest req, NullPointerException e){
+        log.error("发生空指针异常！原因是:",e);
+        return ApiResult.error(CommonEnum.BODY_NOT_MATCH);
+    }
+
+
+    /**
+     * 处理其他异常
+     * @param req
+     * @param e
+     * @return
+     */
+    @ExceptionHandler(value =Exception.class)
+    @ResponseBody
+    public ApiResult exceptionHandler(HttpServletRequest req, Exception e){
+        log.error("未知异常！原因是:",e);
+        return ApiResult.error(CommonEnum.INTERNAL_SERVER_ERROR);
+    }
+}