JFinal+MySql实现登录注册功能
JFinal+MySql实现登录注册功能
JFinal 是基于Java 语言的极速 web 开发框架，其核心设计目标是开发迅速、代码量少、学习简单、功能强大、轻量级、易扩展、Restful。在拥有Java语言所有优势的同时再拥有ruby、python等动态语言的开发效率。
本实例用JFinal框架结合MySql实现用户注册登录功能。
项目结构：
需要的jar包： jfinal-2.2-bin-with-src.jar、c3p0-0.9.5.1.jar、mchange-commons-java-0.2.10.jar、mysql-connector-java-5.1.20-bin.jar包
配置类：
import com.jfinal.config.Constants;
import com.jfinal.config.Handlers;
import com.jfinal.config.Interceptors;
import com.jfinal.config.JFinalConfig;
import com.jfinal.config.Plugins;
import com.jfinal.config.Routes;
import com.jfinal.kit.PropKit;
import com.jfinal.plugin.activerecord.ActiveRecordPlugin;
import com.jfinal.plugin.c3p0.C3p0Plugin;
import com.jfinal.render.ViewType;
import com.jfinal.template.Engine;
import com.model.User;
import com.sun.jmx.snmp.UserAcl;
import com.web.IndexController;
import com.web.LoginContraler;
import com.web.RegisterController;
public class MainConfig extends JFinalConfig{
@Override
public void configConstant(Constants me) {
PropKit.use("config.properties");
me.setDevMode(PropKit.getBoolean("devMode", false));
me.setViewType(ViewType.JSP);
}
@Override
public void configRoute(Routes me) {
// TODO Auto-generated method stub
me.add("/", IndexController.class);
me.add("/login", LoginContraler.class);
me.add("/register",RegisterController.class);
}
@Override
public void configEngine(Engine me) {
// TODO Auto-generated method stub
}
public static C3p0Plugin createC3p0Plugin() {
return new C3p0Plugin(PropKit.get("jdbcUrl"), PropKit.get("user"), PropKit.get("password").trim());
}
@Override
public void configPlugin(Plugins me) {
//c3p0连接池插件
C3p0Plugin C3p0Plugin = createC3p0Plugin();
me.add(C3p0Plugin);
//数据库操作插件
ActiveRecordPlugin arp = new ActiveRecordPlugin(C3p0Plugin);
me.add(arp);
//该方法建立了数据库表名到 Model 的映射关系,下面的示例为默认主键是id
arp.addMapping("user", User.class);
}
@Override
public void configInterceptor(Interceptors me) {
// TODO Auto-generated method stub
}
@Override
public void configHandler(Handlers me) {
// TODO Auto-generated method stub
}
}在src目录下新建配置文件：config.properties,对连接的数据库进行配置：
jdbcUrl = jdbc:mysql://localhost:3306/mydata
user = root
password =1996112lin实体类 User：
import java.util.List;
import com.jfinal.plugin.activerecord.Model;
public class User extends Model<User> {
public static final User dao = new User();
/*查找用户，用于登录*/
public List findByNameAndPwd(String name, String password) {
return find("select * from user where name='"+name+"' and password='"+password+"'");
}
/*实现保存数据到数据库的功能*/
public void saveUser(String name,String password) {
new User().set("name", name).set("password", password).save();
}
}三个控制类
import com.jfinal.core.Controller;
public class IndexController extends Controller{
public void index(){
render("login.jsp");
}
}import java.util.List;
import com.jfinal.core.Controller;
import com.model.User;
public class LoginContraler extends Controller{
public void index(){
List users = User.dao.findByNameAndPwd(getPara("name"),getPara("password"));
if (users.size() > 0) {
//找到用户
setSessionAttr("userInfo", users.get(0));
render("/OK.jsp");
} else {
render("/no.jsp");
}
}
} import com.jfinal.core.Controller;
import com.model.User;
public class RegisterController extends Controller{
public void index() {
String name = getPara("name");
String password = getPara("password");
User.dao.saveUser(name, password);
render("/theOK.jsp");
}
}登录页面login.jsp：
注册
注册页面register.jsp：