鏈接的是mysql數據庫,插入數據時,控制檯報: java
com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data too long for column 'user_name' at row 1
錯誤,具體信息以下: mysql
嚴重: Servlet.service() for servlet default threw exceptio
com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data too long for column 'user_name' at row 1
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2868)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1573)
at com.mysql.jdbc.ServerPreparedStatement.serverExecute(ServerPreparedStatement.java:1160)
at com.mysql.jdbc.ServerPreparedStatement.executeInternal(ServerPreparedStatement.java:685)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1400)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1314)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:1299)
at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeUpdate(NewProxyPreparedStatement.java:105)
at org.springframework.jdbc.core.JdbcTemplate$2.doInPreparedStatement(JdbcTemplate.java:745)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:538)
at org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:739)
at org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:797)
at org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:805)
at com.bester.blog.dao.impl.UserDAOImpl.add(UserDAOImpl.java:25)
at com.bester.blog.service.impl.UserServiceImpl.add(UserServiceImpl.java:12)
at com.bester.blog.web.action.UserAction.add(UserAction.java:30)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
........................ web
看着這錯誤信息,怎麼有似曾相識的感受呢。但就是記不起來了。根據字面意思,一位是輸入超出範圍了。但個人user_name字段設置的是varchar(45),只輸入了三個中文,怎麼可能超出呢? spring
google一下,一看到字符設置字眼,突然想起之前碰到過這個問題的。只是早以到了九霄雲外罷了。 sql
緣由在於:建表的時候,表的編碼和字段編碼都是默認的latin1,設置爲utf8後,問題解決。 數據庫
俗話說,人不能兩次踏入同一條河流,我算破戒了。 google