deletestudentaction.java

来自「java(Swing) access做的成绩管理系统」· Java 代码 · 共 45 行

package edu.xscj.action;

import java.sql.Connection;
import edu.xscj.conn.ConnectDataBase;
import java.sql.PreparedStatement;

public class DeleteStudentAction {
    Connection conn = null;
    public DeleteStudentAction() {
        if (conn == null) {
            conn = ConnectDataBase.getConn();
        }
    }

    public void setConn() {
        if (conn == null) {
            conn = ConnectDataBase.getConn();
        }
    }

    public void deleteStudent(String userNo) {
        PreparedStatement pstmt = null;
        try {
            if (conn == null) {
                this.setConn();
            }
            pstmt = conn.prepareStatement("delete from student where stuNo=?");
            pstmt.setString(1, userNo);
            pstmt.execute();
        } catch (Exception ex) {
        } finally {
            try {
                if (pstmt != null) {
                    pstmt.close();
                }
                if (conn != null) {
                    conn.close();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
}