严重: Servlet.service() for servlet [jsp] in context with path [/management] threw exception [javax.servlet.ServletException: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'CLAMP' in 'where clause'] with root cause
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'CLAMP' in 'where clause'
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
at com.mysql.jdbc.Util.getInstance(Util.java:381)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1031)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:957)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3376)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3308)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1837)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1961)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2537)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2466)
at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1383)
at org.apache.jsp._30010_005fpart_jsp._jspService(_30010_005fpart_jsp.java:300)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:431)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at management.EncodingFilter.doFilter(EncodingFilter.java:21)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:516)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1086)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:659)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:285)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2439)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2428)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:744)

原因：原来写的带非数字的字符串查找没有加单引号

原写法：sql="select * from material_info where m_author="+search_key;

改正后：sql="select * from material_info where m_author='"+search_key+"'";

Sql语句出错：Unknown column 'CLAMP' in 'where clause'的更多相关文章

  1. mysql—mysql查询语句提示Unknown column ‘xxx’ in ‘where clause’

    运行结果中提示Unknown column 'xxx' in 'where clause'的问题.经过大神的指导,顿时明白其中缘由,如果sql中定义的类型是int型的可以不用加引号,但是如果是字符串类 ...

  2. 数据库查询语句遇到:Unknown column 'XXXX' in 'where clause'解决方法

    数据库查询语句遇到:Unknown colunm 'XXX' in 'where clause'解决方法 根本原因:可能是sql语句所用到的数据类型错误(int与String)弄错- 我的情况: 在网 ...

  3. sql语句出错：Column count doesn't match value count at row 1

    报错内容: java.sql.SQLException: Column count doesn't match value count at row 1 at com.mysql.jdbc.SQLEr ...

  4. 查询避免Unknown column ‘xxx’ in ‘where clause’

    但凡写过sql语句的人估计都曾经碰到过类似于Unknown column ‘xxx’ in ‘where clause’的问题. 单从字面理解,我们很容易得出列名不存在的结论,但是,很多时候起始并不是 ...

  5. 查询避免Unknown column ‘xxx’ in ‘where clause

    问题: 单从字面理解,我们很容易得出列名称不存在的结论, 但是,很多时候并不是列名出错造成的,而是由于拼凑sql语句时对字符类型数据没有用引号引起来造成的. 例子: 例如:  String sql=& ...

  6. com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'dd' in 'where clause'

    今天在使用mysql数据库查找数据的时候报错,错误信息如下: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown co ...

  7. jmeter------reponse报错”Unknown column 'XXXXX' in 'where clause'“

    一.问题描述 jmeter添加了与数据库mysql的连接,编写完JDBC Request之后,运行提示报错”Unknown column 'be7f5b6e750bb6becf855386338644 ...

  8. mysql出现 Unknown column 'bname' in 'where clause'和Unknown column 'bid' in 'field list'

    在用mysql数据库建表和修改数据库数据时,出现  Unknown column 'bname' in 'where clause'和Unknown column 'bid' in 'field li ...

  9. JFinal项目eclipse出现Unknown column 'createtime' in 'order clause' 的错误

    JFinal项目eclipse出现Unknown column 'createtime' in 'order clause' 的错误,在本次项目中的原因是我的表中的字段信息中创建时间的字段是creat ...

随机推荐

  1. 微擎开发------day04

    (1) cache_write($key,$data)  按照指定键名缓存数据 cache_write('test', $data) (2) cache_load($key)  读取指定键名的缓存数据 ...

  2. Python开发——函数【Python内建函数】

  3. 29.Mysql监控

    29.Mysql监控29.1 如何选择一个监控方案 29.1.1 选择何种监控方式 29.1.2 如何选择合适自己的监控工具29.2 常用网络监控工具 29.2.1 Cacti简介 29.2.2 Na ...

  4. Django跨域(前端跨域)

    前情回顾 在说今天的问题之前先来回顾一下有关Ajax的相关内容 Ajax的优缺点 AJAX使用Javascript技术向服务器发送异步请求: AJAX无须刷新整个页面: 因为服务器响应内容不再是整个页 ...

  5. boost asio 学习(八) 网络基础 二进制写发送和接收

    http://www.gamedev.net/blog/950/entry-2249317-a-guide-to-getting- started-with-boostasio?pg=9 8. Net ...

  6. 游戏脚本编程 文本token解析

    一个数字的组成由以下几个字符 正负号 + -   小数点 .   数字 0-9 比如 3 -3 3.13 -34.2234 但是符号和小数点不会出现多次 那么识别流程用图来表示 则是 整数 浮点数 一 ...

  7. java多线程系列9 高级同步工具(3) CyclicBarrier

    CyclicBarrier 一个同步辅助类,它允许一组线程互相等待,直到到达某个公共屏障点 (common barrier point)   然后一再执行 public class CyclicBar ...

  8. flask更改已有的response

    今天遇到个问题,需要更改返回的response,但框架已经生成了一个response,所以需要直接更改. 试着找了找解决办法,最终解决方式如下: #下文中payload的类型是 # class Res ...

  9. Unity AssetBundle打包资源工具

    using UnityEngine;using System.Collections;using UnityEditor; /// <summary>/// 简单资源打包Editor/// ...

  10. HTML5 添加新的标签 input属性

    <!-- 新增 有语意标签 --> <nav></nav> <!-- 导航标签 --> <seclion></seclion> ...