MySQL报错MySQL "java.lang.IllegalA

在项目中使用MySQL进行数据查询的时候，突然报错：

java.lang.IllegalArgumentException: HOUR_OF_DAY: 2 -> 3
    at java.util.GregorianCalendar.computeTime(GregorianCalendar.java:2829)
    at java.util.Calendar.updateTime(Calendar.java:3393)
    at java.util.Calendar.getTimeInMillis(Calendar.java:1782)
    at com.mysql.cj.result.SqlTimestampValueFactory.createFromTimestamp(SqlTimestampValueFactory.java:100)
    at com.mysql.cj.result.SqlTimestampValueFactory.createFromTimestamp(SqlTimestampValueFactory.java:46)
    at com.mysql.cj.result.BaseDecoratingValueFactory.createFromTimestamp(BaseDecoratingValueFactory.java:61)
    at com.mysql.cj.result.BaseDecoratingValueFactory.createFromTimestamp(BaseDecoratingValueFactory.java:61)
    at com.mysql.cj.protocol.a.MysqlTextValueDecoder.decodeTimestamp(MysqlTextValueDecoder.java:183)
    at com.mysql.cj.protocol.result.AbstractResultsetRow.decodeAndCreateReturnValue(AbstractResultsetRow.java:87)
    at com.mysql.cj.protocol.result.AbstractResultsetRow.getValueFromBytes(AbstractResultsetRow.java:250)
    at com.mysql.cj.protocol.a.result.ByteArrayRow.getValue(ByteArrayRow.java:91)
    at com.mysql.cj.jdbc.result.ResultSetImpl.getNonStringValueFromRow(ResultSetImpl.java:656)
    at com.mysql.cj.jdbc.result.ResultSetImpl.getDateOrTimestampValueFromRow(ResultSetImpl.java:679)
    at com.mysql.cj.jdbc.result.ResultSetImpl.getTimestamp(ResultSetImpl.java:1019)

原因是系统时区问题，需要在数据库连接加上如下部分：

&serverTimezone=Asia/Shanghai

如：

jdbc:mysql://localhost:3306/demo?useUnicode=true&characterEncoding=utf-8&serverTimezone=Asia/Shanghai

问题解决！