建立第一個jfinal專案流程可以參照jfinal-2.2-manual.pdf的快速入門章節，下載地址為jfinal官網首頁。

web.xml配置如下：

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
	<display-name>jfinal_demo</display-name>
	
  
 	<filter>
		<filter-name>jfinal</filter-name>
		<filter-class>com.jfinal.core.JFinalFilter</filter-class>
		<init-param>
		<param-name>configClass</param-name>
		<param-value>demo.DemoConfig</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>jfinal</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
</web-app>
 

package demo;

import com.jfinal.config.*;

public class DemoConfig extends JFinalConfig {
	// 設定JFinal常量值
	public void configConstant(Constants me) {
		me.setDevMode(true); // JFinal執行在開發模式下
		me.setUrlParaSeparator("&"); // 更改引數分隔符為"&"，預設為"-"
	}
	
	public void configRoute(Routes me) {
		me.add("/hello", HelloController.class); // 將/hello對映到HelloController控制器
		me.add("/luoxn28", Luoxn28Controller.class);
	}
	
	public void configPlugin(Plugins me) {}
	public void configInterceptor(Interceptors me) {}
	public void configHandler(Handlers me) {}
}
 

package demo;

import com.jfinal.core.Controller;

public class HelloController extends Controller {
	public void index() {
		renderText("Hello JFinal World.");
	}
	public void haha() {
		renderText("haha");
	}
	public void lala() {
		String param0 = getPara(0);
		String param1 = getPara(1);
		
		if (param0 != null) {
			if (param1 != null) {
				renderText("lala " + param0 + " " + param1);
			}
			else {
				renderText("lala " + param0);
			}
		}
		else {
			renderText("lala");
		}
	}
}
 

package demo;

import com.jfinal.core.Controller;

public class Luoxn28Controller extends Controller {
	public void index() {
		renderText("I am luoxn28");
	}
}