Spring Boot 集成 FreeMarker 详解案例

xiaoxiao2026-05-18 11

摘要: 原创出处:www.bysocket.com 泥瓦匠BYSocket 希望转载，保留摘要，谢谢！ “年轻就不应该让自己过得太舒服” – From yong

一、Springboot 那些事

SpringBoot 很方便的集成 FreeMarker ，DAO 数据库操作层依旧用的是 Mybatis，本文将会一步一步到来如何集成 FreeMarker 以及配置的详解： Springboot 那些事：系类文章：《Spring Boot 之 RESRful API 权限控制》《Spring Boot 之 HelloWorld详解》《Springboot 整合 Mybatis 的完整 Web 案例》《Springboot 实现 Restful 服务，基于 HTTP / JSON 传输》《Springboot 集成 FreeMarker》

二、运行 springboot-freemarker 工程

git clone 下载工程 springboot-learning-example ，项目地址见 GitHub – https://github.com/JeffLi1993/springboot-learning-example。下面开始运行工程步骤（Quick Start）： 1.数据库准备

a.创建数据库 springbootdb：

1 CREATE DATABASE springbootdb; b.创建表 city ：(因为我喜欢徒步) 1 2 3 4 5 6 7 8 DROP TABLE IF EXISTS `city`; CREATE TABLE `city` ( ` id ` int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT '城市编号' , `province_id` int(10) unsigned NOT NULL COMMENT '省份编号' , `city_name` varchar(25) DEFAULT NULL COMMENT '城市名称' , `description` varchar(25) DEFAULT NULL COMMENT '描述' , PRIMARY KEY (` id `) ) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

c.插入数据

1 INSERT city VALUES (1 ,1, '温岭市' , 'BYSocket 的家在温岭。' ); 2. 项目结构介绍项目结构如下图所示： org.spring.springboot.controller – Controller 层 org.spring.springboot.dao – 数据操作层 DAO org.spring.springboot.domain – 实体类 org.spring.springboot.service – 业务逻辑层 Application – 应用启动类 resources/application.properties – 应用配置文件，应用启动会自动读取配置 resources/web – *.ftl文件，是 FreeMarker 文件配置路径。在 application.properties 配置 resources/mapper – DAO Maper XML 文件 3.改数据库配置打开 application.properties 文件，修改相应的数据源配置，比如数据源地址、账号、密码等。（如果不是用 MySQL，pom 自行添加连接驱动依赖，然后修改驱动名配置。） 4.编译工程在项目根目录 springboot-learning-example，运行 maven 指令： mvn clean install 5.运行工程右键运行 springboot-freemarker 工程 Application 应用启动类的 main 函数，然后在浏览器访问：获取 ID 编号为 1 的城市信息页面： 1 localhost:8080 /api/city/1 获取城市列表页面： 1 localhost:8080 /api/city 6.补充运行环境：JDK 7 或 8，Maven 3.0+ 技术栈：SpringBoot、Mybatis、FreeMarker

三、 springboot-freemarker 工程配置详解

具体代码见 GitHub – https://github.com/JeffLi1993/springboot-learning-example 1.pom.xml 依赖

pom.xml 代码如下：

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 <? 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 >springboot</ groupId > < artifactId >springboot-freemarker</ artifactId > < version >0.0.1-SNAPSHOT</ version > < name >springboot-freemarker :: Spring Boot 集成 FreeMarker 案例</ name >  < parent > < groupId >org.springframework.boot</ groupId > < artifactId >spring-boot-starter-parent</ artifactId > < version >1.5.1.RELEASE</ version > </ parent > < properties > < mybatis-spring-boot >1.2.0</ mybatis-spring-boot > < mysql-connector >5.1.39</ mysql-connector > </ properties > < dependencies >  < dependency > < groupId >org.springframework.boot</ groupId > < artifactId >spring-boot-starter-freemarker</ artifactId > </ dependency >  < dependency > < groupId >org.springframework.boot</ groupId > < artifactId >spring-boot-starter-web</ artifactId > </ dependency >  < dependency > < groupId >org.springframework.boot</ groupId > < artifactId >spring-boot-starter-test</ artifactId > < scope >test</ scope > </ dependency >  < dependency > < groupId >org.mybatis.spring.boot</ groupId > < artifactId >mybatis-spring-boot-starter</ artifactId > < version >${mybatis-spring-boot}</ version > </ dependency >  < dependency > < groupId >mysql</ groupId > < artifactId >mysql-connector-java</ artifactId > < version >${mysql-connector}</ version > </ dependency >  < dependency > < groupId >junit</ groupId > < artifactId >junit</ artifactId > < version >4.12</ version > </ dependency > </ dependencies > </ project > 在 pom.xml 依赖中增加 Spring Boot FreeMarker 依赖。 2.配置 FreeMarker

然后在 application.properties 中加入 FreeMarker 相关的配置：

1 2 3 4 5 6 7 8 9 10 11 ## Freemarker 配置 ## 文件配置路径 spring.freemarker.template-loader-path=classpath: /web/ spring.freemarker.cache= false spring.freemarker.charset=UTF-8 spring.freemarker.check-template-location= true spring.freemarker.content- type =text /html spring.freemarker.expose-request-attributes= true spring.freemarker.expose-session-attributes= true spring.freemarker.request-context-attribute=request spring.freemarker.suffix=.ftl 这是我这块的配置，如果需要更多的 FreeMarker 配置，可以查看下面的详解： 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 spring.freemarker.allow-request-override= false # Set whether HttpServletRequest attributes are allowed to override (hide) controller generated model attributes of the same name. spring.freemarker.allow-session-override= false # Set whether HttpSession attributes are allowed to override (hide) controller generated model attributes of the same name. spring.freemarker.cache= false # Enable template caching. spring.freemarker.charset=UTF-8 # Template encoding. spring.freemarker.check-template-location= true # Check that the templates location exists. spring.freemarker.content- type =text /html # Content-Type value. spring.freemarker.enabled= true # Enable MVC view resolution for this technology. spring.freemarker.expose-request-attributes= false # Set whether all request attributes should be added to the model prior to merging with the template. spring.freemarker.expose-session-attributes= false # Set whether all HttpSession attributes should be added to the model prior to merging with the template. spring.freemarker.expose-spring-macro-helpers= true # Set whether to expose a RequestContext for use by Spring's macro library, under the name "springMacroRequestContext". spring.freemarker.prefer- file -system-access= true # Prefer file system access for template loading. File system access enables hot detection of template changes. spring.freemarker.prefix= # Prefix that gets prepended to view names when building a URL. spring.freemarker.request-context-attribute= # Name of the RequestContext attribute for all views. spring.freemarker.settings.*= # Well-known FreeMarker keys which will be passed to FreeMarker's Configuration. spring.freemarker.suffix= # Suffix that gets appended to view names when building a URL. spring.freemarker.template-loader-path=classpath: /templates/ # Comma-separated list of template paths. spring.freemarker.view-names= # White list of view names that can be resolved. 3.展示层 Controller 详解 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 /** * 城市 Controller 实现 Restful HTTP 服务 * <p> * Created by bysocket on 07/02/2017. */ @Controller public class CityController { @Autowired private CityService cityService; @RequestMapping (value = "/api/city/{id}" , method = RequestMethod.GET) public String findOneCity(Model model, @PathVariable ( "id" ) Long id) { model.addAttribute( "city" , cityService.findCityById(id)); return "city" ; } @RequestMapping (value = "/api/city" , method = RequestMethod.GET) public String findAllCity(Model model) { List<City> cityList = cityService.findAllCity(); model.addAttribute( "cityList" ,cityList); return "cityList" ; } } a.这里不是走 HTTP + JSON 模式，使用了 @Controller 而不是先前的 @RestController b.方法返回值是 String 类型，和 application.properties 配置的 Freemarker 文件配置路径下的各个 *.ftl 文件名一致。这样才会准确地把数据渲染到 ftl 文件里面进行展示。 c.用 Model 类，向 Model 加入数据，并指定在该数据在 Freemarker 取值指定的名称。

四、小结

FreeMarker 是常用的模板引擎，很多开发 Web 的必选。推荐阅读《 Springboot 那些事》欢迎扫一扫我的公众号关注 — 及时得到博客订阅哦！ — http://www.bysocket.com/ — — https://github.com/JeffLi1993 — 相关资源：python入门教程(PDF版)

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