修改功能报错，找不到错误原因了

### Error updating database.  Cause: com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data too long for column 'item' at row 1

### The error may involve com.imooc.oa.dao.ClaimVoucherItemDao.update-Inline

### The error occurred while setting parameters

### SQL: update  claim_voucher_item set claim_voucher_id=?,item=?,amount=?,comment=?         where id=?

### Cause: com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data too long for column 'item' at row 1

; SQL []; Data truncation: Data too long for column 'item' at row 1; nested exception is com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data too long for column 'item' at row 1] with root cause

 com.mysql.jdbc.MysqlDataTruncation: Data truncation: Data too long for column 'item' at row 1

at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3971)

at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3909)

at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2527)

at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2680)

at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2487)

at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1858)

at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:1197)

at org.apache.ibatis.executor.statement.PreparedStatementHandler.update(PreparedStatementHandler.java:46)

at org.apache.ibatis.executor.statement.RoutingStatementHandler.update(RoutingStatementHandler.java:74)

at org.apache.ibatis.executor.SimpleExecutor.doUpdate(SimpleExecutor.java:50)

at org.apache.ibatis.executor.BaseExecutor.update(BaseExecutor.java:117)

at org.apache.ibatis.executor.CachingExecutor.update(CachingExecutor.java:76)

at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:198)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433)

at com.sun.proxy.$Proxy17.update(Unknown Source)

at org.mybatis.spring.SqlSessionTemplate.update(SqlSessionTemplate.java:294)

at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:63)

at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59)

at com.sun.proxy.$Proxy21.update(Unknown Source)

at com.imooc.oa.biz.impl.ClaimVoucherBizImpl.update(ClaimVoucherBizImpl.java:88)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:302)

at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)

at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)

at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281)

at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)

at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)

at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)

at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208)

at com.sun.proxy.$Proxy23.update(Unknown Source)

at com.imooc.oa.controller.ClaimVoucherController.update(ClaimVoucherController.java:79)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)

at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136)

at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)

at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:817)

at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:731)

at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)

at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)

at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)

at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:968)

at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:870)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:661)

at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:844)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)

at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)

at com.imooc.oa.global.EncodingFilter.doFilter(EncodingFilter.java:31)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)

at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)

at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:800)

at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)

at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:806)

at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498)

at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)

at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

at java.lang.Thread.run(Thread.java:748)

<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.4//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.imooc.oa.dao.ClaimVoucherItemDao">
    <resultMap id="resultMap" type="ClaimVoucherItem">
        <id property="id" column="id" javaType="Integer"/>
        <result property="claimVoucherId" column="claim_voucher_id" javaType="Integer"/>
        <result property="item" column="item" javaType="String"/>
        <result property="amount" column="amount" javaType="Double"/>
        <result property="comment" column="comment" javaType="String"/>
    </resultMap>

    <insert id="insert" parameterType="ClaimVoucherItem">
        insert into claim_voucher_item(claim_voucher_id,item,amount,comment)
        values(#{claimVoucherId},#{item},#{amount},#{comment})
    </insert>

    <update id="update" parameterType="ClaimVoucherItem">
        update  claim_voucher_item set claim_voucher_id=#{claimVoucherId},item=#{item},amount=#{amount},comment=#{comment}
        where id=#{id}
    </update>

    <delete id="delete" parameterType="Integer">
        delete from claim_voucher_item where id=#{id}
    </delete>

    <select id="selectByClaimVoucher" resultMap="resultMap">
        select * from claim_voucher_item where claim_voucher_id=#{cvid} order by id
    </select>

</mapper>