Oracle 数字或值错误 pl/SQL

Question

嗨，我在包中编写了一个插入数据的过程，如下所示：

create or replace package Proj2_student_reg_package is
type data_cursor is ref cursor;
procedure add_students(sidIn IN students.sid%type, fnameIn IN students.firstname%type,
lnameIn IN students.lastname%type, statusIn IN students.status%type,
gpaIn IN students.gpa%type, emailIn IN students.gpa%type,
ret_message OUT varchar2);
end Proj2_student_reg_package;
/
create or replace package body Proj2_student_reg_package as
procedure add_students(sidIn IN students.sid%type, fnameIn IN students.firstname%type,
lnameIn IN students.lastname%type, statusIn IN students.status%type,
gpaIn IN students.gpa%type, emailIn IN students.gpa%type,
ret_message OUT varchar2)
is
begin
insert into students values(sidIn ,fnameIn,lnameIn,statusIn,gpaIn,emailIn);
COMMIT;
ret_message := 'Success';
EXCEPTION
WHEN OTHERS THEN
ret_message := 'Error';
end add_students;


end Proj2_student_reg_package;
​

我正在通过Java程序调用：

import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Types;
import java.util.Scanner;
import oracle.jdbc.OracleTypes;
import oracle.jdbc.pool.OracleDataSource;
public class AddStudent {
public void addStudent(){
Scanner line = new Scanner(System.in);
try
{       
//Connection to Oracle server
OracleDataSource ds = new oracle.jdbc.pool.OracleDataSource();
ds.setURL("jdbc:oracle:thin:@localhost:1521:xe");
Connection conn = ds.getConnection("*****", "****");
System.out.print("Enter the sid: ");
String sid = line.next();
System.out.print("Enter first name: ");
String fname = line.next();
System.out.print("Enter last name: ");
String lname = line.next();
System.out.print("Enter status: ");
String status = line.next();
System.out.print("Enter gpa: ");
String gpa = line.next();
System.out.print("Enter email: ");
String email = line.next();

CallableStatement cs = conn.prepareCall("{call Proj2_student_reg_package.add_students(?,?,?,?,?,?,?)}");
cs.setString(1, sid);
cs.setString(2, fname);
cs.setString(3, lname);
cs.setString(4, status);
cs.setString(5, gpa);
cs.setString(6, email);
cs.registerOutParameter(7, Types.VARCHAR);
cs.executeQuery();
System.out.println(cs.getString(7));
cs.close();
//line.close();
}
catch (SQLException e) { System.out.println("SQLException " + e.getMessage());}
catch (Exception e) {System.out.println(e);}
}
}

我的学生表是：

create table students (sid char(4) primary key check (sid like 'B%'),
firstname varchar2(15) not null, lastname varchar2(15) not null, status varchar2(10) 
check (status in ('freshman', 'sophomore', 'junior', 'senior', 'graduate')), 
gpa number(3,2) check (gpa between 0 and 4.0), email varchar2(20) unique);

我给出java程序的值作为sid：B987, fname : akki, lname : aror, satus : junior , gpa : 3,email : [e-mail]..

但这给了我一个错误：

SQLException ORA-06502: PL/SQL: numeric or value error: character to number conversion error
ORA-06512: at line 1

我试图找到太多，但我无法弄清楚错误在哪里。 谁能告诉我错误并帮助我修复错误。

Answer 1

在CallableStatementcs对象中，您需要从cs.setString(5, gpa)更改为cs.setDouble(5, gpa);，因为数据库中gpanumber类型。