优化Mybatis系统异常
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@ -1,10 +1,11 @@
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package org.dromara.common.mybatis.handler;
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import cn.dev33.satoken.exception.NotLoginException;
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import cn.hutool.http.HttpStatus;
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import com.baomidou.dynamic.datasource.exception.CannotFindDataSourceException;
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import jakarta.servlet.http.HttpServletRequest;
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import lombok.extern.slf4j.Slf4j;
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import org.dromara.common.core.domain.R;
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import org.dromara.common.core.utils.StringUtils;
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import org.mybatis.spring.MyBatisSystemException;
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import org.springframework.dao.DuplicateKeyException;
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import org.springframework.web.bind.annotation.ExceptionHandler;
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@ -35,13 +36,54 @@ public class MybatisExceptionHandler {
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@ExceptionHandler(MyBatisSystemException.class)
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public R<Void> handleCannotFindDataSourceException(MyBatisSystemException e, HttpServletRequest request) {
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String requestURI = request.getRequestURI();
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String message = e.getMessage();
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if (StringUtils.contains(message, "CannotFindDataSourceException")) {
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Throwable root = getRootCause(e);
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if (root instanceof NotLoginException) {
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log.error("请求地址'{}',认证失败'{}',无法访问系统资源", requestURI, root.getMessage());
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return R.fail(HttpStatus.HTTP_UNAUTHORIZED, "认证失败,无法访问系统资源");
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}
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if (root instanceof CannotFindDataSourceException) {
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log.error("请求地址'{}', 未找到数据源", requestURI);
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return R.fail(HttpStatus.HTTP_INTERNAL_ERROR, "未找到数据源,请联系管理员确认");
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}
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log.error("请求地址'{}', Mybatis系统异常", requestURI, e);
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return R.fail(HttpStatus.HTTP_INTERNAL_ERROR, message);
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return R.fail(HttpStatus.HTTP_INTERNAL_ERROR, e.getMessage());
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}
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/**
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* 获取异常的根因(递归查找)
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*
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* @param e 当前异常
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* @return 根因异常(最底层的 cause)
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* <p>
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* 逻辑说明:
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* 1. 如果 e 没有 cause,说明 e 本身就是根因,直接返回
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* 2. 如果 e 的 cause 和自身相同(防止循环引用),也返回 e
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* 3. 否则递归调用,继续向下寻找最底层的 cause
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*/
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public static Throwable getRootCause(Throwable e) {
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Throwable cause = e.getCause();
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if (cause == null || cause == e) {
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return e;
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}
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return getRootCause(cause);
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}
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/**
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* 在异常链中查找指定类型的异常
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*
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* @param e 当前异常
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* @param clazz 目标异常类
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* @return 找到的指定类型异常,如果没有找到返回 null
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*/
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public static Throwable findCause(Throwable e, Class<? extends Throwable> clazz) {
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Throwable t = e;
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while (t != null && t != t.getCause()) {
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if (clazz.isInstance(t)) {
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return t;
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}
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t = t.getCause();
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}
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return null;
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}
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}
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