存储程序
CREATE OR REPLACE
PROCEDURE ADDITION
(
A IN NUMBER ,
B IN NUMBER ,
C OUT NUMBER )
AS
BEGIN
C := A+B;
dbms_output.put_line(c);
END ADDITION;
JDBC程序
cstmt = conn.prepareCall("BEGIN addition(?, ?,?); END;");
cstmt.setInt(1, 10);
cstmt.setInt(2, 85);
cstmt.registerOutParameter(3, java.sql.Types.INTEGER);
ResultSet rs = cstmt.executeQuery();
while(rs.next()){
int c =rs.getInt("c");
System.out.println(c);
}
执行上述程序时出现错误。
错误:
java.sql.SQLException: Cannot perform fetch on a PLSQL statement: next
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:113)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:147)
at oracle.jdbc.driver.OracleResultSetImpl.next(OracleResultSetImpl.java:192)
at stored_procedure.main(stored_procedure.java:32)
最佳答案
executeQuery()
设计用于处理返回游标的 sql 语句(最常见的是 SELECT
查询)。
您的调用不会返回游标,因此不适合与此方法一起使用。您应该只使用 execute()
,然后从输出参数中获取值:
cstmt = conn.prepareCall("BEGIN addition(?, ?,?); END;");
cstmt.setInt(1, 10);
cstmt.setInt(2, 85);
cstmt.registerOutParameter(3, java.sql.Types.INTEGER);
cstmt.execute();
int c = cstmt.getInt(3);
System.out.println(c);
关于java - 无法对 PLSQL 语句执行 fetch : next,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/19443213/