spring cloud学习第一步:创建一个可运行的spring boot项目

摘要: spring cloud spring boot

本文档主要作为本人的备忘录

Spring boot的介绍基本上很容易搜到,这地方我就不多说了,直接介绍使用IDEA创建一个可运行的spring boot项目.

1.File -> New -> Project...



注意一点:将Default: https://start.spring.io 修改为: http://start.spring.io,否则有可能会连接不上
2.Next之后,填写自己的Group,Artifact等,选择Maven Project,Next,Next,Next,



3.最终生成此目录结构,FirstApplication.java 为spring boot的启动类.application.properties为配置文件



4.将 application.properties 修改为 application.yml, 添加配置项

server:
port: 8080 #Tomcat端口号
servlet-path: /first #context路径

注意:servlet-path路径前必须带 / 否则会

Caused by: java.lang.IllegalArgumentException: Error page location [first/error] must start with a '/'

5.修改pom.xml,因为这里要创建一个spring web项目,所以需要添加spring-web的依赖

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>

6.创建一个 FirstController

package com.aulbrother.first.web;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

/**
* @since 2018/1/22 9:50
*/
@RestController
public class FirstController{

@GetMapping("/text")
public String text(){
return "success";
}
}

7.启动项目

2018-01-22 10:40:42.300  INFO 8928 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Registering beans for JMX exposure on startup
2018-01-22 10:40:42.323  INFO 8928 --- [           main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2018-01-22 10:40:42.323  INFO 8928 --- [           main] com.aulbrother.first.FirstApplication    : Started FirstApplication in 1.761 seconds (JVM running for 2.559)

8.访问 http://localhost:8080/first/text,成功!!!!


最后贴上完整的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 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion>

<groupId>com.aulbrother</groupId>
<artifactId>first</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>first</name>
<description>第一步</description>

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.9.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</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>