[英]OUT Parameter Error in Calling MySQL Stored Procedure from Java (Eclipse)
[英]MySQL Java stored procedure gives error "Parameter index of 1 is out of range"
public static void main(String[] args) throws Exception {
Connection connection = getMySqlConnection();
CallableStatement proc = connection.prepareCall("{ call LCD_GetDispInfoAllTimeTable() }");
proc.registerOutParameter(1, Types.INTEGER);
proc.execute();
int returnValue = proc.getInt(1);
System.out.println(returnValue + "");
// conn.close();
}
public static Connection getMySqlConnection() throws Exception {
String driver = "com.mysql.jdbc.Driver";
String url = "";
String username = "";
String password = "";
Class.forName(driver);
Connection conn = DriverManager.getConnection(url, username, password);
return conn;
}
}
當我運行此代碼時,我在線程“main”中看到一個異常 java.sql.SQLException: Parameter index of 1 is out of range (1, 0) ,為什么?
此程序返回:
Niemstów 07 pętla 10 05:33:00 3673114 11558169 754378 1
NŻ Niemstów 05 16 05:35:00 3669905 11556510 754379 3
NŻ Niemstów 03 16 05:37:00 3666969 11555665 754380 3
我的程序;
CREATE DEFINER=`root`@`%` PROCEDURE `LCD_GetDispInfoAllTimeTable`()
BEGIN
SELECT bs.name as bsName, tt.busstoptype as bsType, tt.time as ttTime, bs.longitude as lon, bs.latitude as lat, tt.timetable_id as ttID,
Bus_Stop_Status_GET( tt.timetable_id, bst.timetable_id, bst.busstate_id ) as bus_stop_status -- 0 zrobiony, 1 - aktualny, 2- pomiędzy, 3 następne
FROM (SELECT * FROM mpk_currentbusstate ORDER BY changestime desc LIMIT 1 )bst
join mpk_timetable t ON( bst.timetable_id = t.timetable_id )
join mpk_timetable tt ON ( t.linelogin_id = tt.linelogin_id AND t.line_id = tt.line_id AND t.brigade = tt.brigade AND t.rate = tt.rate
and t.schedudle_id = tt.schedudle_id)
LEFT JOIN mpk_busstop bs ON (bs.busstop_id = tt.busstop_id)
LEFT JOIN mpk_busstate bt ON( bst.busstate_id = bt.busstate_id );
END
您需要在調用字符串中指定參數:
CallableStatement proc = connection.prepareCall("{ call LCD_GetDispInfoAllTimeTable(?) }");
注意到了?
,它說有一個參數要設置。 現在它知道有一個參數需要設置,就像 Java 或其他語言中的方法一樣。 如果你想使用多個參數,你可以寫多個?
,例如: ...LCD_GetDispInfoAllTimeTable(?, ?, ?)
。
就您的程序聲明而言,其代碼是:
CREATE DEFINER=`root`@`%` PROCEDURE `LCD_GetDispInfoAllTimeTable`()
BEGIN
SELECT bs.name as bsName, tt.busstoptype as bsType, tt.time as ttTime,
bs.longitude as lon, bs.latitude as lat, tt.timetable_id as ttID,
Bus_Stop
其中過程定義不包含任何參數定義,因此 setParameter 或 registerOutParameter 不能應用於此過程
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