zbb20171215 MyBatis報錯: Parameter '*' not found. Available parameters are [1, 0, param1, param2]
阿新 • • 發佈:2018-01-02
class adding data alt num sql throws clas str
的錯誤。
mapper代理接口中的方法:
public User login(String loginid,String loginpwd) throws Exception;
mapper.xml中的代碼:
<select id="login" parameterType="String" resultType="User">
SELECT * FROM `user` WHERE LoginID=‘#{loginid}‘ and LoginPwd=‘#{loginpwd}‘ AND Role=2
</select>
調用login()時出現Parameter ‘loginid‘ not found. Available parameters are [1, 0, param1, param2]
解決方案:
當只傳一個參數到sql語句時,可以直接寫參數名,當傳多個參數時,應當這樣寫(多個參數已#{0}開始):
1 |
public User login(String loginid,String loginpwd) throws Exception;
|
1 2 3 |
<select id= "loginByTeacher" parameterType= "String" resultType= "User" >
SELECT * FROM `user` WHERE LoginID=#{ 0 } and LoginPwd=#{ 1 } AND Role= 2
</select>
|
參考:http://www.2cto.com/database/201409/338155.html
zbb20171215 MyBatis報錯: Parameter '*' not found. Available parameters are [1, 0, param1, param2]