Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL

本文记录了一次因SQL语句中括号未正确闭合导致的MySQL语法错误经历,通过检查和修正SQL语句中的括号匹配问题,解决了更新操作失败的问题。

Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘’ at line 11
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)

  @Test
        public void testUpdateUser() {
            // 查询
            User user = this.userMapper.queryUserById(11L);
            // 更新
            user.setAge(28);
            user.setPassword("111111");
            this.userMapper.updateUser(user);
        }
   <update id="updateUser" parameterType="cn.itcast.pojo.User">
        update tb_user
        set
        user_name = #{userName},
        password = #{password},
        name = #{name},
        age = #{age},
        sex = #{sex},
        birthday = #{birthday},
        updated = NOW()
        where
           (id = #{id});
    </update>

又遇到这个问题了,简直快无语了,然后把之前可以跑成功的代码复制过来就好了,对比也没发现有什么不同,就是这么奇怪吗?写代码就是磨练心性,不急不躁,心平气和
对比发现id那里少了一个},原来不仅要比对字段和属性,更重要的是比对你的符号是否正确,对数据库的语句确实是不太熟悉,需要进行一波复习。。。

Exception in thread "main" org.apache.ibatis.exceptions.PersistenceException: ### Error updating database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '//分别对应接口方法,对应的实体类 insert into user(name ,pas' at line 1 ### The error may exist in mappers/UserMapper.xml ### The error may involve mapper.UserMapper.addUser-Inline ### The error occurred while setting parameters ### SQL: //分别对应接口方法,对应的实体类 insert into user(name ,password,age,address) values (?,?,?,?) ### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '//分别对应接口方法,对应的实体类 insert into user(name ,pas' at line 1 at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30) at org.apache.ibatis.session.defaults.DefaultSqlSession.update(DefaultSqlSession.java:196) at org.apache.ibatis.session.defaults.DefaultSqlSession.insert(DefaultSqlSession.java:181) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:62) at org.apache.ibatis.binding.MapperProxy$PlainMethodInvoker.invoke(MapperProxy.java:145) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:86) at com.sun.proxy.$Proxy4.addUser(Unknown Source) at UserTest.main(UserTest.java:27) Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '//分别对应接口方法,对应的实体类 insert into user(name ,pas' at line 1 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at com.mysql.jdbc.Util.handleNewInstance(Util.java:425) at com.mysql.jdbc.Util.getInstance(Util.java:408) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:943) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3973) 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:2501) 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:47) 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:194) ... 6 more
最新发布
10-19
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