在IDEA中创建web项目并添加maven

在pom.xml中配置

    <dependencies>
        <dependency>
            <groupId>com.jfinal</groupId>
            <artifactId>jetty-server</artifactId>
            <version>8.1.8</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>com.jfinal</groupId>
            <artifactId>jfinal</artifactId>
            <version>3.3</version>
        </dependency>
    </dependencies>

在创建config配置类

package gui.config;

import com.jfinal.config.*;
import com.jfinal.template.Engine;
import gui.controller.HelloController;

public class JFinalConfig extends com.jfinal.config.JFinalConfig {
    public void configConstant(Constants constants) {
        constants.setDevMode(true);
    }

    public void configRoute(Routes routes) {
        routes.add("/hello", HelloController.class);
    }

    public void configEngine(Engine engine) {

    }

    public void configPlugin(Plugins plugins) {

    }

    public void configInterceptor(Interceptors interceptors) {

    }

    public void configHandler(Handlers handlers) {

    }
}

创建controller

package gui.controller;

import com.jfinal.core.Controller;

public class HelloController extends Controller {
    public void index (){
        renderText("Hello world");
    }
}

在web.xml中配置过滤器

    <filter>
        <filter-name>jfinal</filter-name>
        <filter-class>com.jfinal.core.JFinalFilter</filter-class>
        <init-param>
            <param-name>configClass</param-name>
            <param-value>gui.config.JFinalConfig</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>jfinal</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

运行使用tomcat运行项目