Spring Cloud 2.x系列之springboot整合freemarker
springboot 中自帶的頁面渲染工具為thymeleaf ,freemarker這種模板引擎用的也比較多。
一、在spring中springMVC代表著view層元件
二、為什麼使用freemarker:簡單容易學、邏輯分明
三、freemarker優點:不依賴servlet、網路或者web環境
1、新建maven專案,對應的pom.xml檔案如下
<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/4.0.0http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>spring-cloud</groupId> <artifactId>sc-freemarker</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>sc-freemarker</name> <url>http://maven.apache.org</url> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.4.RELEASE</version> </parent> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>Finchley.RELEASE</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> <dependencies> <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>
2、新建配置檔案application.yml
server: port: 8081 spring: application: name: sc-freemarker freemarker: allow-request-override: false cache: true check-template-location: true charset:UTF-8 content-type: text/html expose-request-attributes: false expose-session-attributes: false suffix: .ftl templateEncoding: UTF-8 templateLoaderPath: classpath:/templates/ expose-spring-macro-helpers: false
備註:freemarker有哪些配置項可以參考類
org.springframework.boot.autoconfigure.freemarker.FreeMarkerProperties
3、新建一個controller
package sc.freemarker.controller; import java.util.ArrayList; import java.util.List; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import sc.freemarker.model.User; @Controller public class FreemarkerController { @RequestMapping("/getUser") public StringgetUser(Integer id, Model model){ User u = new User(); u.setId(1); u.setAge(13); u.setSex(1); u.setUserName("黃金"); User l = new User(); l.setId(1); l.setAge(23); l.setSex(0); l.setUserName("白銀"); List<User> friends = newArrayList<User>(); friends.add(l); u.setFriends(friends); model.addAttribute("user",u); return"getUser"; } }
備註:注意最外層的控制層註解只能用@Controller
4、新建模板檔案getUser.ftl
<!DOCTYEhtml> <htmlxmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org" xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity3"> <head> <title>Hello World!</title> </head> <body> <center> <p>welcome${user.userName} to freemarker!</p> <p> 年齡: ${user.age}</br> 性別: <#ifuser.sex==0> 女 <#elseifuser.sex==1> 男 <#else> 保密 </#if> </p> <h4>我的好友:</h4> <#listuser.friends as f> 姓名:${f.userName} , 年齡${f.age} <br> </#list> </center> </body> </html>
5、其他專案檔案如下圖
6、執行FreemarkerApplication.java類,啟動專案;並檢查啟動資訊,確認freemarker配置是否生效
7、訪問頁面http://127.0.0.1:8081/getUser
原始碼:
https://gitee.com/hjj520/spring-cloud-2.x/tree/master/sc-freemarker
本文作者:java樂園