springboot freemarker

springboot可以通过简单的配置集成freemarker

添加maven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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.5.RELEASE</version>
    </parent>
    <artifactId>spring-freemarker</artifactId>
    <name>spring-freemarker</name>
    <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>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</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-freemarker</artifactId>
        </dependency>
    </dependencies>
</project>

添加application.properties并添加freemarker相关配置

spring.freemarker.enabled=true
spring.freemarker.suffix=.ftl
spring.mvc.static-path-pattern=/static/**

查看其他的模板配置可以访问https://docs.spring.io/spring-boot/docs/2.2.5.RELEASE/reference/htmlsingle/#templating-properties

添加测试类

@SpringBootApplication
@Controller
public class SpringFreemarkerApplication {

    @RequestMapping("/index")
    public String index() {
        return "index";
    }

    public static void main(String[] args) {
        SpringApplication.run(SpringFreemarkerApplication.class, args);
    }

}

创建src/main/java/resources/templates目录，添加index.ftl文件

<head>
    <script type="text/javascript" src="/static/index.js"></script>
</head>
<body onload="windowOnLoad();">
    <h1>Hello World</h1>
    <div id="div"></div>
</body>

创建src/main/java/resources/static目录，添加index.js文件

function windowOnLoad() {
    document.getElementById("div").innerHTML = "Hello From JS";
}

启动应用，访问http://localhost:8080/index可以看到如下内容：

说明配置成功