项目搭建

选择创建项目类型
File -> New -> Project ->Maven

注：GroupId 包名路径
创建 application.yml
resources -> New -> File 输入：application.yml

注：配置路径需要：加空格方式

server :
  ip: 127.0.0.1
  port: 8877
  context-path: /
  tomcat:
     uri-encoding: UTF-8
     max-threads: 800
     access-log-enabled: true
     #access-log-pattern: '%h %l %u %t "%r" %s %b %D'
     access-log-pattern: '%{X-Real-IP}i %l %u %t &quot;%r&quot; %s %b'
     accesslog.pattern: combined
     basedir: logback_logs
spring:
  freemarker:
    settings:
      number_format: 0.##
    cache: false
    template-loader-path: ["classpath:/templates"]

创建启动入口类
注：需要在GroupId 包名的路径下创建

package com.yellow;

import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.web.client.RestTemplate;

@SpringBootApplication
@EnableScheduling
public class Main {

    @Bean
    public RestTemplate getRestTemplate(){
        return new RestTemplate();
    }

    public static void main(String[] args) throws Exception {
        new SpringApplicationBuilder().sources(Main.class).web(true).run(args);
    }

}

创建index访问控制器
@RequestMapping 配置访问路径
@Controller 视图解析器可以解析return 的jsp,html页面，并且跳转到相应页面
@ResetController = @Controller + @ResponseBody
当访问 http://localhost:8877/默认请求 index方法，并调用 index.ftl 模版页面，通过 ModelMap进行数据传递
注：模版路径在application.yml 配置，即：resources/templates

package com.yellow.controller;

import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;

import java.text.SimpleDateFormat;
import java.util.Date;

@Controller
@RequestMapping(value = "/")
public class IndexController {
    
    @RequestMapping(value = "/")
    public  String index(ModelMap modelMap) throws Exception {
        String time = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date());
        modelMap.put("time", time);
        modelMap.put("text","hello wrold");
        return "index";
    }
}

创建index.ftl 模版

<!DOCTYPE html>
<html lang="en">
<style></style>
<head>
    <meta charset="utf-8" />
    <title>daily</title>

    <style type="text/css">

    </style>
</head>
<body>

<h1 style="text-align: center;color: green;">Index</h1>

<div style="padding:8px;text-align: left;font-size: 20px;border: 1px solid #999999;">
    <br>time:<strong style="color: royalblue;">${time!}</strong>
    <br>text:<strong style="color: royalblue;">${text!}</strong>
</div>
</body>
</html>