项目结构

具体代码

//DemoConfig.java
package com.demo.config;

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

public class DemoConfig extends JFinalConfig {
    @Override
    public void configConstant(Constants me) {
        me.setDevMode(true);
    }

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

    @Override
    public void configEngine(Engine me) {

    }

    @Override
    public void configPlugin(Plugins me) {

    }

    @Override
    public void configInterceptor(Interceptors me) {

    }

    @Override
    public void configHandler(Handlers me) {

    }
}


//HelloController.java
package com.demo.controller;

import com.jfinal.core.Controller;

public class HelloController extends Controller {

    public void index(){
        renderText("hello world!");
    }
}


//web.xml
<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>Archetype Created Web Application</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>com.demo.config.DemoConfig</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>jfinal</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
</web-app>


//pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>jfinal-web-demo</groupId>
        <artifactId>jfinal-demo</artifactId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <artifactId>jfinal-web-demo-provider</artifactId>
    <packaging>war</packaging>
    <name>jfinal-web-demo-provider Maven Webapp</name>
    <url>http://maven.apache.org</url>
    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.jfinal</groupId>
            <artifactId>jfinal</artifactId>
        </dependency>
    </dependencies>
    <build>
        <finalName>jfinal-web-demo-provider</finalName>
        <plugins>
            <plugin>
                <!--maven对应的tomcat插件,启动tomcat的时候使用-->
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <version>2.2</version>
                <configuration>
                    <port>8081</port>
                    <path>/</path>
                    <uriEncoding>utf-8</uriEncoding>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

运行结果