SpringBoot自定义异常基本步骤模板

public class MyException extends RuntimeException {

    private int status; //状态码

    public MyException( int status,String message) {
        super(message);
        this.status = status;
    }
}

/**
 * 自定义异常类
 */

public class LyException extends RuntimeException {

    private int status; //状态码

    public LyException(String message,int status) {
        super(message);
        this.status = status;
    }

    /**
     * 支持枚举
     * @param ceshisglShog
     */
    public LyException(ExceptionEnums ceshisglShog) {
        super(ceshisglShog.getMessage());
        this.status = ceshisglShog.getStatus();
    }

    public int getStatus() {
        return status;
    }
}

import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import javax.servlet.http.HttpServletRequest;

@ControllerAdvice // 对controller中的方法做增强,做异常处理的增强
public class ControllerExceptionAdvice {

/*
*这个方法的返回类型,可以是一个结果类
*/
    @ExceptionHandler(MyException.class) //写自定义异常类或者你要拦截的异常类,如Exception异常类
    public String exceptionHandler(MyException ex){
    	//异常内容
        String message = ex.getMessage();
        
        /*
        * 具体内容根据需求来
        */
        
		// 返回异常结果
        return message ;
    }

}

import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;


/**
 * 捕获自定义异常
 */
@ControllerAdvice
public class BasicExceptionAdvice {

    @ExceptionHandler(LyException.class)//拦截的自定义异常类
    public ResponseEntity handleException(LyException ex){

        return ResponseEntity.status(ex.getStatus()).body(new ExceptionResult(ex));
    }
}

<dependency>
    <groupId>joda-time</groupId>
    <artifactId>joda-time</artifactId>
</dependency>

import lombok.Getter;
import org.joda.time.DateTime;

/**
 * 自定义异常结果类
 */
@Getter //记得导入lombok,不用直接就来一个 Get方法
public class ExceptionResult {
    private int status;//状态码
    private String message; //内容
    private String timestamp;//时间

    public ExceptionResult(LyException e) {
        this.status = e.getStatus();
        this.message = e.getMessage();
        this.timestamp = DateTime.now().toString("yyyy-MM-dd HH:mm:ss");
    }
}

@Getter //记得导入lombok,不用直接就来一个 Get方法
public enum  ExceptionEnums {
	//有多少定义多少
    ITEM_PRICE_NOT_NULL(501,"价格不能为空"),
    UPLOAD_FILE_ERROR(502,"上传失败，请重试");
    
    private int status;
    private String message;//内容
    
    ExceptionEnums(int status, String message) {
        this.status = status;
        this.message = message;
    }
}