1、创建SpringBoot项目时，勾选freemarker依赖（web，dev）
2、Controller中向model中存放数据
package com.ziv.springbootbygralde.controller; import java.util.ArrayList; import java.util.List; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import com.ziv.springbootbygralde.entity.UserEntity; @Controller @RequestMapping("/temp") public class FreeMarkerController { private static final Logger log = LoggerFactory.getLogger(FreeMarkerController.class); @RequestMapping("/show") public String show(Model model) { model.addAttribute("str", "Hello Spring Boot freemarker"); UserEntity userEntity = new UserEntity(); userEntity.setId(100); userEntity.setName("zhong ziv"); model.addAttribute("stu", userEntity); List<UserEntity> list = new ArrayList<>(); for (int i = 0; i < 5; i++) { UserEntity usertemp = new UserEntity(); usertemp.setId(i); usertemp.setName("user" + i); list.add(usertemp); } model.addAttribute("user", list); log.info(model.toString()); return "show"; } @RequestMapping("/Demofreemarker") public String freemarker(Model model) { model.addAttribute("str", "Hello Spring Boot freemarker"); ///返回string必须和templates中的文件名称一致，否则报错 return "freemarker"; } }
3、freemarker模板默认在templates/*.ftl可以在配置文件中改变设置
#freemarker configuration #freemarker *.ftl spring.freemarker.suffix=.html #freemarker文件的目录，默认目录为templates下面的文件，web文件目录下的文件 spring.freemarker.template-loader-path=classpath:/web
4、freemarker模板上设置
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Insert title here</title> <script type="text/javascript" src="/js/jquery-3.4.1.min.js"></script> </head> <body> <h3>show:${str}</h3> <hr> <h3>用户</h3> <!-- ??判断stu是否存在，是否为null --> <#if stu??> <!-- id==1001才进行显示 --> <#if stu.id ==1001> 编码:${stu.id}<br> 名称:${stu.name}<br> <#else> 学生信息不为1001 </#if> <#else> 没有学生信息 </#if> <hr> <h3>遍历学生</h3> <#list user as u> 编码:${u.id}<br> 名称:${u.name}<br> <hr> </#list> <button id="btn" >点击</button> <script type="text/javascript"> $("#btn").click(function(){ alert("click"); }) </script> </body> </html>