spring-boot搭建简单web（一）

一、项目搭建以maven为基础，首先导入spring-boot基本jar包(spring-boot-starter.jar和spring-boot-starter-web.jar)

<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 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion>
<groupId>demo_boot</groupId>
<artifactId>demo_boot</artifactId>
<version>0.0.1-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
<version>1.5.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>1.5.1.RELEASE</version>
</dependency>
</dependencies>
</project>

二、spring-boot程序入口main

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);
}
}

@SpringBootApplication 用以启动组件扫描和自动配置

SpringApplication.run(Application.class, args) 用以启动引导应用程序

三、写一个controller，作为web应用

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
@RequestMapping("demo")
public class demoController {

@RequestMapping("/index")
@ResponseBody
String index() {
return "index";
}
}

运行main，浏览器访问http://localhost:8080/demo/index，在页面会呈现字符 index

由此可见，spring-boot，嵌入的tomcat以8080端口启动，不存在项目名