Mybatis中传参包There is no getter for property named 'XXX' in 'class java.lang.Strin

来自于:http://blog.csdn.net/woshixuye/article/details/8820387

一、发现问题

<select id="queryStudentByNum" resultType="student" parameterType="string">  

select num,name,phone from student  
<where> 
<if test = " num!=null and num!='' ">
AND num = #{num}
</if>
</where>
</select> 
Mybatis查询传入一个字符串传参数,报There is no getter for property named 'num' in 'class java.lang.String'。


二、解决问题

<select id="queryStudentByNum" resultType="student" parameterType="string">  

select num,name,phone from student  
<where> 
<if test = " _parameter!=null and_parameter!='' ">
AND num = #{_parameter}
</if>
</where>
</select>
无论参数名,都要改成"_parameter"。


三、原因分析

Mybatis默认采用ONGL解析参数,所以会自动采用对象树的形式取string.num值,引起报错。也可以public List methodName(@Param(value="num") String num)的方法说明参数值


参考博客:

http://blog.sina.com.cn/s/blog_86e49b8f010191hw.html

http://txin0814.iteye.com/blog/1533645

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