單個的string傳遞需要@Param否則會報沒有get方法，設定不入sql引數（There is no getter for property named 'bz' in 'class java.lang.String'）

     map,實體等都會有內建的getter

     public List<TbBasBedSrt> getTbBasBedSrtList(Map<String, Object> map);

      public List<?> getbedByBz(@Param(value="_bz") String _bz);

      <select id="getbedByBz" parameterType="string" resultType="java.util.HashMap">

select * from tb_bas_bed_srt where bz like '%${_bz}%' order by order_num 

</select>

   <select id="getTbBasLkpByBusinessTypeMap" parameterType="String"

resultType="java.util.HashMap" >

SELECT * FROM TB_BAS_LKP f

where 1 = 1

   <if test="businessType!=null and businessType!=''">

and f.BUSINESS_TYPE = #{businessType}//不用$,$傳遞引數的方式不一樣，#會將null轉化""

</if>

</select>

$的不會轉化為string 即不會加'',此時sql會識別此欄位為關鍵字（列名，表名）所以‘$’常常這樣用，補單用$

SQL: SELECT * FROM TB_BAS_LKP f   where 1 = 1           and  f.BUSINESS_TYPE = CURRENCY_TYPE_UNIT_RMB

### Cause: java.sql.SQLException: ORA-00904: "CURRENCY_TYPE_UNIT_RMB": 識別符號無效

#的會自動把引數轉化為string

 Preparing: SELECT * FROM TB_BAS_LKP f where 1 = 1 and f.BUSINESS_TYPE = ? 

 CURRENCY_TYPE_UNIT_RMB(String)