mybatis There is no getter for property named 'xx' in 'class java.lang.String

用mybatis查询时，传入一个字符串传参数，且进行判断时，会报

There is no getter for property named ‘moduleCode‘ in ‘class java.lang.String  

错误写法：

<select id="queryAllParentModule" resultType="jobModule" parameterType="jobModule">
select modulecode,
       modulename,
       modulevalue,
       linkurl,
       rank,
       parentmodule=isnull(parentmodule,1),
       moduledescription
from job_module
<where>
          <choose>
              <when test="moduleCode!=null and moduleCode!=‘‘">modulecode = #{moduleCode}</when>
              <when test="moduleCode==null or moduleCode==‘‘">(parentmodule is null or len(parentmodule)&lt;=0)</when>
          </choose>
      </where>
lt;/select>  

需要修改成：

<select id="queryModuleByCode" resultType="jobModule" parameterType="string">
select modulecode,
       modulename,
       modulevalue,
       linkurl,
       rank,
       parentmodule=isnull(parentmodule,1),
       moduledescription
from job_module
<where>
          <choose>
              <when test="_parameter!=null and _parameter!=‘‘">modulecode = #{_parameter}</when>
              <when test="_parameter==null or _parameter==‘‘">(parentmodule is null or len(parentmodule)&lt;=0)</when>
          </choose>
      </where>
lt;/select>  

不管你的参数是什么，都要改成"_parameter"

mybatis There is no getter for property named 'xx' in 'class java.lang.String