JFinal getModel 메소드와 Java의 데이터베이스 사용법에 대한 문제점 예에 대한 자세한 설명

public void configPlugin(Plugins me) {
    C3p0Plugin cp = null;
    try {
      cp = new C3p0Plugin(
          "jdbc:mysql://localhost:3306/huaxuetang?useUnicode=true&characterEncoding=utf-8",
          "root", "1234");
      System.out.println("成功");
    } catch (Exception e) {
      System.out.println("连接失败");
    }
    me.add(cp);
    ActiveRecordPlugin arp = new ActiveRecordPlugin(cp);
    arp.setShowSql(true);
    me.add(arp);
    arp.addMapping("bse_user", "id", User.class);
    arp.addMapping("grade_one_choice","id",GOneQuestion.class);
  }

import com.jfinal.plugin.activerecord.Model;

public class GOneQuestion extends Model<GOneQuestion>{
  private static final long serialVersionUID = 1L;
  // 声明一个全局操作的变量
  public final static GOneQuestion questiondao = new GOneQuestion();
}

<input type="text" name="gOneQuestion.A" class="required" maxlength="50" style="width: 250px"/>

GOneQuestion question =getModel(GOneQuestion.class);

new GOneQuestion()
        .set("book", question.getStr("book"))
        .save();