String sqlString = "{CALL MyStoredProcedure(?,?)}";
CallableStatement sqlStm = connection.prepareCall(sqlString);
sqlStm.setString(1, username);
sqlStm.registerOutParameter(2, Types.DECIMAL, 0); // <---- ERROR
sqlStm.execute();
这是我的错误堆栈跟踪:
java.sql.SQLException: Parameter number 2 is not an OUT parameter
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1073)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:987)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:982)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:927)
at com.mysql.jdbc.CallableStatement.checkIsOutputParam(CallableStatement.java:690)
at com.mysql.jdbc.CallableStatement.registerOutParameter(CallableStatement.java:1881)
at com.mysql.jdbc.CallableStatement.registerOutParameter(CallableStatement.java:1890)
at com.isb.igt.database.StoredProcedures.preparationCalls(StoredProcedures.java:40)
at com.isb.igt.database.StoredProcedures.main(StoredProcedures.java:236)
程序第一行:
CREATE DEFINER=devel@11.22.33.44程序MyStoredProcedure(登录时) VARCHAR(255),OUT变量DECIMAL(20,2)
我无法弄清楚如何让它发挥作用。
谢谢
答案 0 :(得分:2)
函数调用应该看起来像{? = call MyStoredProcedure(?)}