JFinal入门教程：IDEA(2018.2) + Maven(3.5) + Tomcat(9.0) + JFinal(3.5)

作者：Albert.Wen 添加时间：2018-11-14 22:41:32 修改时间：2024-12-21 14:23:43 分类：电脑/软件使用编辑

一、安装 IDEA、Maven、Tomcat，参考链接：

二、配置 IDEA

如果要更新 Java 文件，按快捷键 F5，如果要更新非 Java 文件（如：resoutces ），按快捷键 F4，

详细参考：IDEA + Tomcat 实现Java代码自动（快速）热更新

三、新建 Java Web 项目

1、File -> New -> Project -> Maven -> 勾选“Create from archetype”-> 选择“...maven-archetype-webapp”

2、默认情况下，没有java源码目录和配置文件目录，自己新建一下：

/src/main/java

/src/main/resources

选中目录/src/main/java，右键选择 Mark Directory as -> Sources Root

选中目录/src/main/resources，右键选择 Mark Directory as -> Resources Root

3、配置 pom.xml，增加对 JFinal 框架的依赖

<?xml version="1.0" encoding="UTF-8"?>

<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/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>jianbao.blog</groupId>
    <artifactId>jianbao-blog</artifactId>
    <version>1.0.0</version>
    <packaging>war</packaging>

    <name>jianbao-blog</name>
    <url></url>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>

        <jfinal.version>3.5</jfinal.version>
    </properties>


    <dependencies>

        <!--++++++++++++++++++++++++++++++++++++++++++++++++++++-->
        <!-- JFinal Web 框架 -->
        <!--++++++++++++++++++++++++++++++++++++++++++++++++++++-->
        <dependency>
            <groupId>com.jfinal</groupId>
            <artifactId>jfinal</artifactId>
            <version>${jfinal.version}</version>
        </dependency>

    </dependencies>

    <build>
        <finalName>jianbao-blog</finalName>
        <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
            <plugins>
                <plugin>
                    <artifactId>maven-clean-plugin</artifactId>
                    <version>3.0.0</version>
                </plugin>
                <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
                <plugin>
                    <artifactId>maven-resources-plugin</artifactId>
                    <version>3.0.2</version>
                </plugin>
                <plugin>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <version>3.7.0</version>
                </plugin>
                <plugin>
                    <artifactId>maven-surefire-plugin</artifactId>
                    <version>2.20.1</version>
                </plugin>
                <plugin>
                    <artifactId>maven-war-plugin</artifactId>
                    <version>3.2.0</version>
                </plugin>
                <plugin>
                    <artifactId>maven-install-plugin</artifactId>
                    <version>2.5.2</version>
                </plugin>
                <plugin>
                    <artifactId>maven-deploy-plugin</artifactId>
                    <version>2.8.2</version>
                </plugin>     
            </plugins>
        </pluginManagement>
    </build>
</project>

4、新建控制器文件：/src/main/controller/UserController.java

package controller;

import com.jfinal.core.Controller;

public class UserController extends Controller {
    public void index() {
        renderText("欢迎来到 JFinal世界！");
    }
}

5、新建配置文件：/src/main/java/config/BlogConfig.java

JFinal需要有一个配置文件，所有的配置信息都可以在该文件中进行配置，该配置文件需要继承JFinalConfig

package config;

import com.jfinal.config.*;
import com.jfinal.template.Engine;
import controller.BlogController;

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

    @Override
    public void configRoute(Routes routes) {
        routes.add("/", BlogController.class);
    }

    @Override
    public void configEngine(Engine engine) {
    }

    @Override
    public void configPlugin(Plugins plugins) {
    }

    @Override
    public void configInterceptor(Interceptors interceptors) {
    }

    @Override
    public void configHandler(Handlers handlers) {
    }
}

6、配置过滤器（关键步骤）：/src/main/webapp/WEB-INF/web.xml

在web.xml文件中配置过滤器，web项目启动后需要根据这个过滤器来找到配置文件读取相关配置信息

<!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>jiabao-blog</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>config.BlogConfig</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>jfinal</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
</web-app>

7、配置项目编译输出目录