mybaits错误解决:There is no getter for property named 'id' in class 'java.lang.String'
2017-03-15 15:22
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在使用mybaitis传参数的时候,如果仅传入一个类型为String的参数,那么在 xml文件中应该使用_parameter来代替参数名。
正确的写法:
<select id="isCargoBillNoExist" resultType="java.lang.Integer">
select count(1)
from t_entry_cargo_receiver_info
where 1=1
<if test="_parameter != null" >
and cargo_bill_no = #{_parameter,jdbcType=VARCHAR}
</if>
</select>
错误的写法:
<select id="isCargoBillNoExist" resultType="java.lang.Integer">
select count(1)
from t_entry_cargo_receiver_info
where 1=1
<if test="id != null" >
and cargo_bill_no = #{id,jdbcType=VARCHAR}
</if>
</select>
评论区有人提到:
也可以在mapper的接口中,给这个方法的参数加上@Param(value=“id”),这样就能在.xml中使用#{id,jdbcType=VARCHAR} 了。
正确的写法:
<select id="isCargoBillNoExist" resultType="java.lang.Integer">
select count(1)
from t_entry_cargo_receiver_info
where 1=1
<if test="_parameter != null" >
and cargo_bill_no = #{_parameter,jdbcType=VARCHAR}
</if>
</select>
错误的写法:
<select id="isCargoBillNoExist" resultType="java.lang.Integer">
select count(1)
from t_entry_cargo_receiver_info
where 1=1
<if test="id != null" >
and cargo_bill_no = #{id,jdbcType=VARCHAR}
</if>
</select>
评论区有人提到:
也可以在mapper的接口中,给这个方法的参数加上@Param(value=“id”),这样就能在.xml中使用#{id,jdbcType=VARCHAR} 了。
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