java.sql.SQLException: Access denied for user ''@'localhost' (using password: NO) 出现缘由和解决办法
今天我在复习mysql数据库中,写JDBC测试代码的时候，在使用Junit测试运行程序的时候，遇到了这个错误:java.sql.SQLException: Access denied for user ''@'localhost' (using password: NO) ,从该报错的字面意思就能够知道是没有使用数据可密码，可是我在数据可的properties文件中，写了数据库密码了呀。怎
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