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

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

<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>  

<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>