从零学习springboot（一）--环境搭建

1、安装springboot

1）首先检查jdk版本是1.8或更高版本。

java -version

2）jar依赖建议使用支持依赖管理功能的编译工具，这里使用maven建立工程

springboot是用maven3.2以及以上版本进行编译的

3）添加springboot依赖

典型的maven pom文件会集成自spring-boot-starter-parent工程并声明一个或多个starters

<1>典型场景

<?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.example </groupId> <artifactId> myproject </artifactId> <version> 0.0.1-SNAPSHOT </version> <!-- Inherit defaults from Spring Boot --> <parent> <groupId> org.springframework.boot </groupId> <artifactId> spring-boot-starter-parent </artifactId> <version> 2.0.1.RELEASE </version> </parent> <!-- Add typical dependencies for a web application --> <dependencies> <dependency> <groupId> org.springframework.boot </groupId> <artifactId> spring-boot-starter-web </artifactId> </dependency> </dependencies> <!-- Package as an executable jar --> <build> <plugins> <plugin> <groupId> org.springframework.boot </groupId> <artifactId> spring-boot-maven-plugin </artifactId> </plugin> </plugins> </build> </project>

<2>如果不想使用 spring-boot-starter-parent，同时扔保持依赖管理的好处（非插件管理），可以通过使用 scope=import的依赖

<dependencyManagement> <dependencies> <!-- Override Spring Data release train provided by Spring Boot --> <dependency> <groupId> org.springframework.data </groupId> <artifactId> spring-data-releasetrain </artifactId> <version> Fowler-SR2 </version> <type> pom </type> <scope> import </scope> </dependency> <dependency> <groupId> org.springframework.boot </groupId> <artifactId> spring-boot-dependencies </artifactId> <version> 2.0.1.RELEASE </version> <type> pom </type> <scope> import </scope> </dependency> </dependencies> </dependencyManagement>

4）使用maven插件可以将工程打包为可执行jar

<!-- Package as an executable jar --> <build> <plugins> <plugin> <groupId> org.springframework.boot </groupId> <artifactId> spring-boot-maven-plugin </artifactId> </plugin> </plugins> </build>

5）查看工程依赖树

mvn dependency:tree