sql有误,一般是   sql语句少了问号.…

今天给大家分析一个在mybatis中遇见的错误 是什么原因导致这个错误信息呢,请看下面代码 再来看看下面找个 发现区别在哪里没有,没错就是#与$的区别. 1 #是将传入的值当做字符串的形式,eg:select id,name,age from student where id =#{id},当前端把id值1,传入到后台的时候,就相当于 select id,name,age from student where id ='1'. 2 $是将传入的数据直接显示生成sql语句,eg:select id…

Caused by: java.lang.ClassNotFoundException: org.springframework.dao.DataIntegrityViolationException     at java.net.URLClassLoader$1.run(Unknown Source)     at java.security.AccessController.doPrivileged(Native Method)     at java.net.URLClassLoader…

数据库用的hibernate,开发工具用的myeclipse,使用开发工具连接数据库生成hibernate基于xml的po类,运行时报org.springframework.dao.DataIntegrityViolationException 并且提示某个字段  not—null: 解决,查看了数据库字段类型为number类型,将生成的po对应字段改写成Integer类型,原因:开发工具生成的类型,与数据库number类型对象,但是如果数据是0会被过滤, 而Integer数据int的包装类型,…

org.springframework.dao.InvalidDataAccessApiUsageException: Write operations are not allowed in read-only mode (FlushMode.NEVER) - turn your Session into FlushMode.AUTO or remove 'readOnly' marker from transaction definition 解决办法: 在执行service中一个方法bume…

题记:以前记录过一些自己遇到的BUG,这个行为,让我一看报错的提示信息就能定位到问题的所在,后来记得比较多了,好多是重复性的再加上比较忙就没有详细的记录了,今天的工作量比较小,就顺便记录一下,以便以后更快的解决此类问题. BUG的报错信息如下所示: org.springframework.dao.InvalidDataAccessApiUsageException: Parameter value [41] did not match expected type [java.lang.Integ…

异常信息: org.springframework.dao.InvalidDataAccessApiUsageException: The given object has a null identifier: com.blog.entity.PersonalizedSettings; nested exception is org.hibernate.TransientObjectException: The given object has a null identifier: com.bl…

[spring]:org.springframework.dao.InvalidDataAccessApiUsageException: Write operations are not allowed in read-only mode org.springframework.dao.InvalidDataAccessApiUsageException: Write operations are not allowed in read-only mode (FlushMode.NEVER/MA…

报错:org.springframework.dao.InvalidDataAccessApiUsageException: Write operations are not allowed in read-only mode (FlushMode.NEVER/MANUAL): Turn your Session into FlushMode.COMMIT/AUTO or remove 'readOnly' marker from transaction definition. 搞开发的时候碰到…

public Wcrash getWcrashInfo(int id) { String sql = "select plateform_id,android_version,app_version_code,app_version_name,device_id," + "model,brand,product,stack_trace,crash_date,package_name from wcrash where id = ? "; return this.jd…