SpringBoot官方文档翻译（七）：增加类路径依赖

SpringBoot官方文档翻译
SpringBoot官方文档翻译第二部分

11.2 Adding Classpath Dependencies（增加类路径依赖）

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Spring Boot provides a number of “Starters” that let you add     
jars to your classpath. Our sample application has already     
used spring-boot-starter-parent in the parent section of the POM.     
The spring-boot-starter-parent is a special starter that provides     
useful Maven defaults. It also provides a dependency-management     
section so that you can omit version tags for “blessed” dependencies.

Spring Boot 提供了一些“Starters”用于您增加一些jars包到您的类路径下。我们的示例应用已经使用了spring-boot-starter-parent在上一节的POM文件中。spring-boot-starter-parent是一个提供了非常有用的Maven默认的特殊的starter。它同样提供了一个dependency-management部分，以便于您可以为一些“幸福”依赖忽略版本标签。

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Other “Starters” provide dependencies that you are likely to need     
when developing a specific type of application. Since we are     
developing a web application, we add a spring-boot-starter-web     
dependency. Before that, we can look at what we currently have     
by running the following command:

其他“Starters”提供了一些依赖，以便于您可以在开发一些特殊模式的应用，如果我们需要部署一个web应用，我们需要增加 spring-boot-starter-web的依赖。在此之前，我们可以使用以下命令寻找我们目前已有的依赖：

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$ mvn dependency:tree

[INFO] com.example:myproject:jar:0.0.1-SNAPSHOT

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The mvn dependency:tree command prints a tree representation of     
your project dependencies. You can see that spring-boot-starter-parent     
provides no dependencies by itself. To add the necessary dependencies,     
edit your pom.xml and add the spring-boot-starter-web dependency     
immediately below the parent section:

mvn dependency:tree命令会将您的应用依赖以树形展示。您可以发现spring-boot-starter-parent本身并不提供任何依赖。如果需要增加必要的依赖，更改您的pom.xml，增加spring-boot-starter-web依赖紧接在父节点下面：

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

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If you run mvn dependency:tree again, you see that there are now a     
number of additional dependencies, including the Tomcat web server     
and Spring Boot itself.

如果您再次运行mvn dependency:tree，您将会看到一系列的新增的依赖，包括tomcat服务器和Spring Boot本身

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