5分钟创建一个SpringBoot + Themeleaf的HelloWord应用

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第一步：用IDE创建一个普通maven工程，我用的eclipse.

第二步：修改pom.xml,加入支持SpringBoot和Themeleaf的依赖，文件内容如下：

 1 <?xml version="1.0" encoding="UTF-8"?> 2 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 3   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 4   <modelVersion>4.0.0</modelVersion> 5  6   <groupId>com.chry</groupId> 7   <artifactId>spring-boot-thymeleaf</artifactId> 8   <version>0.0.1</version> 9   <packaging>jar</packaging>10 11     <properties>12         <java.version>1.7</java.version>13         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>14     </properties>15 16   <name>spring-boot-thymeleaf</name>17   <description>Spring Boot with Thymeleaf</description>18 19     <!-- Inherit defaults from Spring Boot -->20     <parent>21         <groupId>org.springframework.boot</groupId>22         <artifactId>spring-boot-starter-parent</artifactId>23         <version>1.4.0.RELEASE</version>24     </parent>25 26   <dependencies>27     <dependency>28       <groupId>org.springframework.boot</groupId>29       <artifactId>spring-boot-starter-thymeleaf</artifactId>30     </dependency>31    32     <dependency>33       <groupId>org.springframework.boot</groupId>34       <artifactId>spring-boot-starter-test</artifactId>35       <scope>test</scope>36     </dependency>37   </dependencies>38  39   <build>40     <plugins>41       <plugin>42         <groupId>org.springframework.boot</groupId>43         <artifactId>spring-boot-maven-plugin</artifactId>44       </plugin>45     </plugins>46   </build>47 48 </project>

第三步：创建SpringBoot应用主类

package com.chry.springboot; import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplicationpublic class SpringBootThymeleafApp {    public static void main(String[] args) {        SpringApplication.run(SpringBootThymeleafApp.class, args);    }}

第四步: 创建HelloWorldController类，返回值"index“将用于对映后面要创建的index.html

package com.chry.springboot.controller;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;@Controllerpublic class HelloWorldController {    @RequestMapping("/")    public String index() {        return "index";    }}

第五步：在src/main/resources/templates下创建要显示Hello World的index.html文件，加入Themeleaf头，文件必须是XHTML格式，否则运行会报异常。

由于XHTML格式检查很严格，文件大了不好查找。可以找一些在线格式化网站帮助检查，用XML格式检查就可以

<!DOCTYPE html><html xmlns:th="http://www.thymeleaf.org"><head>    <title>Spring Boot and Thymeleaf example</title>    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/></head><body>    <h3>Spring Boot and Thymeleaf</h3>    <p>Hello World!</p></body></html>

第六步：用maven build工程，生成spring-boot-thymeleaf-0.0.1.jar

第七步：运行java -jar spring-boot-thymeleaf-0.0.1.jar, 然后浏览器http://localhost:8080　看效果。

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