解决：org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.builder.BuilderException: Error evaluating expression 'requestMap.maintenancename != null and requestMap.maintenance

本文转载自查看原文 2017-04-23 16:32 5150

异常如下：org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.builder.BuilderException: Error evaluating expression 'requestMap.maintenancename != null and requestMap.maintenancename != '''. Cause: org.apache.ibatis.ognl.OgnlException: source is null for getProperty(null, "maintenancename")

解决方案：在dao层添加dao层方法中加@Param("requestmap")注解即可

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猜您在找 Spring+mybatis错误：org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.binding. Spring错误：org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.binding.Bi org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.binding.BindingException: Parameter 'username' not found. Available parameters are [1, 0, param1, param2] ### Cause: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error creating document instance. Cause: org.xml.sax. ### Error building SqlSession. ### The error may exist in SQL Mapper Configuration ### Cause: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibat MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException mybatis3.5.2报错org.apache.ibatis.builder.BuilderException: Error creating document instance. Cause: com.sun.org.apache.xerces.internal.impl.io.MalformedByteSequenceException: 1 字节的 UTF-8 序列的字节 1 无效。 The error may exist in com/bjpowernode/dao/StudentDao.xml ### Cause: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderExcept 报错 ———— Cause: org.apache.ibatis.builder.BuilderException: Error creating document instance. Cause: org.xml.sax.SAXParseException; lineNumber: 2; columnNumber: 6; 不允许有匹配 "[xX][mM][lL]" 的处理指令目标。