delete_crouse.java

来自「本网站为学生管理网站」· Java 代码 · 共 47 行

package students;
import java.sql.*;
public class Delete_crouse {
	public static void delete(String stu,String str1,String str2,String str3,String str4,String str5){
		if(str1!=null){
			fun(stu,str1);
		}
		if(str2!=null){
			fun(stu,str2);
		}
		if(str3!=null){
			fun(stu,str3);
		}
		if(str4!=null){
			fun(stu,str4);
		}
		if(str5!=null){
			fun(stu,str5);
		}
	}
	public static void fun(String stu,String sql){
		Connection con = null;
		Statement stmt = null;
		ResultSet rs = null;
		try {
			con = Database.connectToDb();
			String strSQL = "delete from sel_crouses where ID='"+stu+"' and cro_id='"+sql+"'";
			stmt = con.createStatement();
			stmt.executeUpdate(strSQL);
			} catch (SQLException e) {
				e.printStackTrace();
			} catch (Exception e) {
				e.printStackTrace();
			} finally {
				if (con != null) {
					try {
						con.close();
					} catch (SQLException e) {
						e.printStackTrace();
					}
					con = null;
				}
			}
		}
	}