Java报错Exception in thread “main“ java.lang.ExceptionInInitializerError

秒速五厘米 2022-11-12 09:54 219阅读 0赞

> 记一次在Java中遇到的奇葩报错，在网上找了各种各样的方法还是无法解决。后经逐步排查解决方法如下：

> Exception in thread "main" java.lang.ExceptionInInitializerError  
> Caused by: java.lang.NullPointerException  
>     at java.lang.Class.forName0(Native Method)  
>     at java.lang.Class.forName(Unknown Source)  
>     at util.BaseDao.<clinit>(BaseDao.java:26)

**报错如图：**

![20210323183541351.png][]

**弹窗显示：**A Java Exception has occurred. 发生了Java异常。

连简单的System.out.println("测试");都输不出来

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDg5MzkwMg_size_16_color_FFFFFF_t_70][]

**解决方法：**

我发现是我jdbc的链接 jdbc.url 写反了，更正为图二就解决了

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDg5MzkwMg_size_16_color_FFFFFF_t_70 1][]

**其他错误解决方法：**

[https://blog.csdn.net/u012061196/article/details/53443204][https_blog.csdn.net_u012061196_article_details_53443204]

[https://blog.csdn.net/m0\_38120325/article/details/89363407][https_blog.csdn.net_m0_38120325_article_details_89363407]

[20210323183541351.png]: /images/20221022/983c8110944141138a05a0a2cbac8b3d.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDg5MzkwMg_size_16_color_FFFFFF_t_70]: /images/20221022/50412c6d410c4c029c9f982c60c229fa.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDg5MzkwMg_size_16_color_FFFFFF_t_70 1]: /images/20221022/15aea7e785c4445eb4866e09fb73347c.png
[https_blog.csdn.net_u012061196_article_details_53443204]: https://blog.csdn.net/u012061196/article/details/53443204
[https_blog.csdn.net_m0_38120325_article_details_89363407]: https://blog.csdn.net/m0_38120325/article/details/89363407