1.檢查實體類相應的字段名以及set，get方法（仔仔細細看）
2.檢查mapper.xml取值字段
3.注意實體類中isDelete等類似 isXxx的字段 set get方法會變成GetDelete() SetDelete(),手動改過來
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項目重啟后, Mybatis報錯org.apache.ibatis.ognl.NoSuchPropertyException分析
解決：org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.builder.BuilderException: Error evaluating expression 'requestMap.maintenancename != null and requestMap.maintenance
### 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
### 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.
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
org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: java.lang.NumberFormatException: For input string: "W%" ### Cause: java.lang.NumberFormatException: For input s
org.apache.ibatis.ognl.OgnlException: source is null for getProperty(null, "enterpCd")-Mybatis報錯
org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manu
org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure
異常：org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure