实力踩坑：invalid comparison: java.util.Date and java.lang.String

Posted 2022-01-02 一宿君

实力踩坑：invalid comparison: java.util.Date and java.lang.String

• 1、错误日志
• 2、分析原因解决

1、错误日志

Caused by: java.lang.IllegalArgumentException: invalid comparison: java.util.Date and java.lang.String
	at org.apache.ibatis.ognl.OgnlOps.compareWithConversion(OgnlOps.java:93)
	at org.apache.ibatis.ognl.OgnlOps.isEqual(OgnlOps.java:143)
	at org.apache.ibatis.ognl.OgnlOps.equal(OgnlOps.java:802)
	at org.apache.ibatis.ognl.ASTNotEq.getValueBody(ASTNotEq.java:53)
	at org.apache.ibatis.ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)
	at org.apache.ibatis.ognl.SimpleNode.getValue(SimpleNode.java:258)
	at org.apache.ibatis.ognl.ASTAnd.getValueBody(ASTAnd.java:61)

2、分析原因解决

找到mybatis的xml文件，发现只有这两个字段是日期类型，仔细想了一下，那八成就是日期类型Date不能进行字符串Date != ""判断，只进行Date != null判断即可！

<if test='startDate != null and startDate != ""'>
     start_date = #startDate,jdbcType=TIMESTAMP,
</if>
<if test='endDate != null and endDate != ""'>
     end_date = #endDate,jdbcType=TIMESTAMP
</if>

只需改成如下：

<if test='startDate != null'>
     start_date = #startDate,jdbcType=TIMESTAMP,
</if>
<if test='endDate != null'>
     end_date = #endDate,jdbcType=TIMESTAMP
</if>

再次运行就妥了!!!