1.本指南将引导您完成使用Spring创建SpringMVC “hello world”网站的过程。
注意： 你需要JDK 1.8或更高版本Gradle 4+或Maven 3.2+。
2.创建maven 项目
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 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>org.springframework</groupId> <artifactId>gs-serving-web-content</artifactId> <version>0.1.0</version> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.2.1.RELEASE</version> </parent> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <optional>true</optional> </dependency> </dependencies> <properties> <java.version>1.8</java.version> </properties> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
3.创建一个controller
src/main/java/hello/GreetingController.java
package hello; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestParam; @Controller public class GreetingController { @GetMapping("/greeting") public String greeting(@RequestParam(name="name", required=false, defaultValue="World") String name, Model model) { model.addAttribute("name", name); return "greeting"; } }
@GetMapping : 将GET请求映射到方法上
@RequestParam(name="name", required=false, defaultValue="World") String name
将请求参数中的name对应的值绑定到name 上； required : false :此查询字符串参数不是必需的；如果请求中没有此参数，则使用“World”的默认值。
name参数的值将添加到模型对象中，最终使视图模板可以访问它.
4.使用Thymeleaf创建视图。
src/main/resources/templates/greeting.html
<!DOCTYPE HTML>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<title>Getting Started: Serving Web Content</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
</head>
<body>
<p th:text="‘Hello, ‘ + ${name} + ‘!‘" />
</body>
</html>
5.使用springboot 启动类启动
src/main/java/hello/Application.java
package hello; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication public class Application { public static void main(String[] args) { SpringApplication.run(Application.class, args); } }
原文：https://www.cnblogs.com/javatiandi/p/11895512.html