java web 运行的报错

[sly401hh]

警告: DbConnectionManager.getConnection() 获得数据库链接失败.

链接类型:com.mysql.jdbc.Driver
链接位置:jdbc:mysql://127.0.0.1:3306/db_9griddiary?user=root&password=1234&useUnicode=true
十二月 03, 2018 10:35:29 下午 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet [DiaryServlet] in context with path [/NineGridDiary] threw exception
java.lang.NullPointerException java.sql.SQLException: The connection property 'useUnicode' only accepts values of the form: 'true', 'false', 'yes' or 'no'. The value 'true ' is not in this set.

[爱码少年 00fly.online]

true后面多打空格了。。。

[咸哼酒家]

'true' ==》 'true '