[Java] java swing实现电影购票系统

/**
 * 执行增删改的操作
 * @param sql
 * @param param
 * @return
 */
 public static boolean operupdate(string sql, list<object> param) {
 int res = 0;// 获得影响的行数
 connection conn = null;// 获取连接
 preparedstatement psts = null;// 装载sql语句
 resultset rs = null;
 conn = getconn();
 try {
 psts = conn.preparestatement(sql);
 if (param != null) {
 for (int i = 0; i < param.size(); i++) {
  psts.setobject(i + 1, param.get(i));
 }
 }
 res = psts.executeupdate();
 
 } catch (sqlexception e) {
 e.printstacktrace();
 } finally {
 closeall(rs, psts, conn);//关闭相关的连接
 }
 return res > 0 ? true : false;
 
 }

/**
 * 执行查找的操作
 * @param sql
 * @param param
 * @return
 */
 public static <t> list<t> operquery(string sql, list<object> param, class<t> cls) {
 connection conn = null;// 获取连接
 preparedstatement psts = null;// 装载sql语句
 resultset rs = null;
 conn = getconn();
 list<t> list = new arraylist<t>();
 try {
 psts = conn.preparestatement(sql);
 if (param != null) {
 for (int i = 0; i < param.size(); i++) {
  psts.setobject(i + 1, param.get(i));
 }
 }
 rs=psts.executequery();
 
 resultsetmetadata rsmd = rs.getmetadata();
 while(rs.next()){
 t entity = cls.newinstance();
 for(int j =0;j<rsmd.getcolumncount();j++){
  string columnname = rsmd.getcolumnname(j+1);
  object value = rs.getobject(columnname);
  field fields = cls.getdeclaredfield(columnname);
  fields.setaccessible(true);
  fields.set(entity, value);
 }
 list.add(entity);
 }
 } catch (sqlexception e) {
 e.printstacktrace();
 } catch (instantiationexception e) {
 e.printstacktrace();
 } catch (illegalaccessexception e) {
 e.printstacktrace();
 } catch (nosuchfieldexception e) {
 e.printstacktrace();
 } catch (securityexception e) {
 e.printstacktrace();
 } finally {
 closeall(rs, psts, conn);
 }
 return list;
 }