SpringBoot项目配置全局处理异常

1、自定义异常

/**
 * 自定义异常
 */
public class RRException extends RuntimeException {
    private static final long serialVersionUID = 1L;

    private String msg;
    private int code = 500;

    public RRException(String msg) {
        super(msg);
        this.msg = msg;
    }

    public RRException(String msg, Throwable e) {
        super(msg, e);
        this.msg = msg;
    }

    public RRException(int code, String msg) {
        super(msg);
        this.msg = msg;
        this.code = code;
    }

    public RRException(String msg, int code, Throwable e) {
        super(msg, e);
        this.msg = msg;
        this.code = code;
    }
}

2、全局异常处理器

import com.youzidata.businesschain.common.Result;
import com.youzidata.businesschain.exception.RRException;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

/**
 * 全局异常处理器
 */
@RestControllerAdvice
@Slf4j
public class GlobalExceptionHandler {
    /**
     * 业务异常
     */
    @ExceptionHandler(RRException.class)
    public Object businessException(RRException e) {
        log.error(e.getMessage());
        return Result.failure(e.getCode(), e.getMessage());
    }
}

3、异常调用

if (cellSet.size() != sumCellSet.size() || !cellSet.containsAll(sumCellSet)) {
    throw new RRException(1002, "数据错误");
}

4、说明

通过配置全局异常处理器，会过滤到对应的业务异常，然后我们在代码中只需要抛出异常并且不需要另外使用try-catch来进行捕获，则可以处理并返回前端对应的响应码和错误信息。