本文主要内容：
1. 创建项目
1、 项目类型：Spring Initializr，选择Default：https://start.spring.io
2、输入项目信息，如下图所示：
3、选择项目信息
4、输入项目的保存目录等信息，点击【Finish】即可
2. 第一个Hello项目
1、首先确定pom.xml文件中的依赖等信息是否有遗漏。下面是初始项目的依赖：
<?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>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.13.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.ecxhit</groupId>
<artifactId>hello-spring-boot-2</artifactId>
<version>1.0.0-SNAPSHOT</version>
<name>hello-spring-boot-2</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
2、Application中写入Hello代码：
代码如下：
package com.ecxhit.hellospringboot2;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
@RestController
@SpringBootApplication
public class HelloSpringBoot2Application {
@RequestMapping(value = "",method = RequestMethod.GET)
public String sayHi(){
return "Hello Spring Boot";
}
public static void main(String[] args) {
SpringApplication.run(HelloSpringBoot2Application.class, args);
}
}
3、右击，运行项目（Ctrl+Shitf+F10）
4、浏览器输入地址，即可访问：
3、自定义Banner（佛祖保佑）
示例：
_ooOoo_
o8888888o
88" . "88
(| ^_^ |)
O\ = /O
____/`---'\____
.' \\| |// `.
/ \\||| : |||// \
/ _||||| -:- |||||- \
| | \\\ - /// | |
| \_| ''\---/'' | |
\ .-\__ `-` ___/-. /
___`. .' /--.--\ `. . ___
."" '< `.___\_<|>_/___.' >'"".
| | : `- \`.;`\ _ /`;.`/ - ` : | |
\ \ `-. \_ __\ /__ _/ .-` / /
========`-.____`-.___\_____/___.-`____.-'========
`=---='
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
佛祖保佑 永不宕机 永无BUG
如果需要自定义字符，可以百度
4、单元测试
test/java/下的文件代码如下：
源码如下：
package com.ecxhit.hellospringboot2;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.test.web.client.TestRestTemplate;
import org.springframework.boot.web.server.LocalServerPort;
import org.springframework.http.ResponseEntity;
import org.springframework.test.context.junit4.SpringRunner;
import java.net.URL;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.junit.Assert.assertThat;
@RunWith(SpringRunner.class)
@SpringBootTest(classes = HelloSpringBoot2Application.class,webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
public class HelloSpringBoot2ApplicationTests {
@LocalServerPort
private int port;
private URL base;
@Autowired
private TestRestTemplate template;
@Before
public void setUp() throws Exception{
this.base = new URL("http://localhost:"+port+"/");
}
@Test
public void contextLoads() {
ResponseEntity<String> responseEntity = template.getForEntity(base.toString(),String.class);
assertThat(responseEntity.getBody(),equalTo("Hello Spring Boot"));
}
}
至此。
