一、目录结构

二、pom.xml

<?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>com.airkisser</groupId>
    <artifactId>spring-boot-sample-web-freemarker</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>war</packaging>

    <name>spring-boot-sample-web-freemarker</name>
    <description>Spring boot web freemarker sample</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </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-tomcat</artifactId>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


</project>

三、application.properties

spring.mvc.view.prefix=classpath:/templates/
spring.mvc.view.suffix=.ftl

spring.freemarker.charset=UTF-8
spring.freemarker.content-type=text/html
spring.freemarker.template-loader-path=classpath:/templates/
spring.freemarker.allow-request-override=false
spring.freemarker.allow-session-override=false
spring.freemarker.expose-request-attributes=true
spring.freemarker.expose-session-attributes=true
spring.freemarker.expose-spring-macro-helpers=true
spring.freemarker.request-context-attribute=request
# freemarker settings
spring.freemarker.settings.template_update_delay=0
spring.freemarker.settings.default_encoding=UTF-8
spring.freemarker.settings.locale=zh_CN
spring.freemarker.settings.date_format=yyyy-MM-dd
spring.freemarker.settings.time_format=HH:mm:ss
spring.freemarker.settings.datetime_format=yyyy-MM-dd HH:mm:ss
spring.freemarker.settings.number_format=0.##

# 是否开启Freemarker缓存，调试模式关闭
spring.freemarker.cache=false

四、Application.java

package com.airkisser;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.support.SpringBootServletInitializer;

@SpringBootApplication
public class Application  extends SpringBootServletInitializer {

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(Application.class);
    }

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

}

五、HelloController.java

package com.airkisser;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;

import java.util.Date;

@Controller
public class HelloController {

    @GetMapping("/")
    public String hello(Model model){
        model.addAttribute("date",new Date());
        model.addAttribute("message","Hello Freemarker.");
        return "welcome";
    }

}

六、welcome.ftl

<#-- @ftlvariable name="request" type="javax.servlet.http.HttpServletRequest" -->
<#-- @ftlvariable name="date" type="java.util.Date" -->
<#-- @ftlvariable name="message" type="java.lang.String" -->
<#assign contentPath=request.contextPath>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Welcome</title>
</head>
<body>
ContentPath: ${contentPath}
<br>
Date: ${date?datetime}
<br>
${message}
</body>
</html>

七、结果

ContentPath:
Date: 2017-03-05 22:32:11
Hello Freemarker.