java错误:ORA00923:FROM关键字未在预期位置找到(JDBC)
我不熟悉oracle和java。我试图理解为什么我的代码不起作用。每次我执行最后一段代码时,都会出现错误。我一直在试图理解为什么我得到了它很长一段时间,但我无法解决它。这段代码中只有一条SELECT语句。我认为那里没有任何错误。 来自WageK的密码。爪哇:
import java.sql.*;
public class wage
{
public static void getWage
(int wage_id, java.lang.String[] w_name, java.lang.String[] w_lname,
int[] w_wage, int[] w_month, int[] wage_calc)
throws SQLException
{
try
{
Connection conn = DriverManager.getConnection("jdbc:default:connection:");
PreparedStatement pstmt = null;
ResultSet rs = null;
String sql = "Select name, last_name, wage,
n_month, Value(A).wage_calc() as your_wage" +"From wage_java A" +
"Where A.ID = ?";
pstmt = conn.prepareStatement(sql);
pstmt.setInt(1, wage_id);
rs = pstmt.executeQuery();
if (rs.next())
{
w_name[0] = rs.getString("name");
w_lname[0] = rs.getString("last_name");
w_wage[0] = rs.getInt("wage");
w_month[0] = rs.getInt("n_month");
wage_calc[0] = rs.getInt("wage_calc");
}
else
{
w_name[0] = "0";
w_lname[0] = "0";
w_wage[0] = 0;
w_month[0] = 0;
wage_calc[0] = 0;
}
}
catch (SQLException e) {System.err.println(e.getMessage());}
}
}
然后,我使用以下代码发布PL/SQL包装器
Create or replace procedure getWage (wage_id IN NUMBER, w_name OUT VARCHAR2,
w_lname OUT VARCHAR2, w_wage OUT NUMBER, w_month OUT NUMBER,
wage_calc OUT NUMBER) AS language Java name 'WageK.getWage
(int, java.lang.String[],java.lang.String[],int[], int[], int[])';
但当我试图使用此代码访问它时,它会给我一个错误:
set serveroutput ON;
call DBMS_JAVA.SET_OUTPUT(2000);
declare
w_name VARCHAR2(20);
w_lname VARCHAR2(20);
w_wage Number;
w_month Number;
wage_calc Number;
BEGIN
getWage(1, w_name, w_lname, w_wage, w_month, wage_calc);
dbms_output.Put_line('Wages of employee's:');
dbms_output.Put_line(' ' || wage_calc);
end;
任何关于我的问题的帮助都将不胜感激
# 1 楼答案
您应该在创建字符串后将其打印出来。至少有些问题是显而易见的,比如:
换句话说,字符串中需要空格,比如: