在将kft-activiti-demo的数据库连接改为mysql之后，可以正常登陆，但是在新建请假流程的时候出现如下错误：
Caused by: java.sql.SQLException: Incorrect string value: '\xE5\x85\xAC\xE4\xBC\x91' for column 'leave_type' at row 1
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:998)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3847)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3783)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2447)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2594)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2545)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1901)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2113)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2049)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2034)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:105)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeUpdate(DelegatingPreparedStatement.java:105)
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:133)
... 122 more
经过查找发发现是由于mysql连接设置的有问题，在application.properitis中设置的连接如下：
jdbc.url=jdbc:mysql://localhost:3306/kafeitu?useUnicode=true&characterEncoding=utf-8
应该改为：
jdbc.url=jdbc:mysql://localhost:3306/kafeitu?useUnicode=true&characterEncoding=utf-8