Customizing the Banner自定义SpringBoot的启动banner

本文主要是介绍Customizing the Banner自定义SpringBoot的启动banner，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

先看一下官方文档是怎么写的

23.2 Customizing the Banner

The banner that is printed on start up can be changed by adding a banner.txt file to your classpath or by setting the spring.banner.location property to the location of such a file. If the file has an encoding other than UTF-8, you can set spring.banner.charset. In addition to a text file, you can also add a banner.gif, banner.jpg, or banner.png image file to your classpath or set the spring.banner.image.location property. Images are converted into an ASCII art representation and printed above any text banner.

自定义banner

banner它就是在启动的时候可以通过添加在你的类路径的banner.txt或者是spring.banner.location属性指定的的文件来改变。如果你的文件不是utf-8的其他字符类型，你需要设置

spring.banner.charset的属性。除了文本文件，你也可以添加banner.gif,banner.jpg或者是banner.png图片文件在你的类路径下或者是指定spring.banner.image.location的属性，

images的文件将会转换为ASCall艺术形式打印在textbanner上。

Inside your banner.txt file, you can use any of the following placeholders:

Table 23.1. Banner variables

Variable	Description
`${application.version}`	The version number of your application, as declared in `MANIFEST.MF`. For example,`Implementation-Version: 1.0` is printed as `1.0`.
`${application.formatted-version}`	The version number of your application, as declared in `MANIFEST.MF` and formatted for display (surrounded with brackets and prefixed with `v`). For example `(v1.0)`.
`${spring-boot.version}`	The Spring Boot version that you are using. For example `2.1.1.RELEASE`.
`${spring-boot.formatted-version}`	The Spring Boot version that you are using, formatted for display (surrounded with brackets and prefixed with `v`). For example `(v2.1.1.RELEASE)`.
`${Ansi.NAME}` (or `${AnsiColor.NAME}`, `${AnsiBackground.NAME}`, `${AnsiStyle.NAME}`)	Where `NAME` is the name of an ANSI escape code. See `AnsiPropertySource` for details.
`${application.title}`	The title of your application, as declared in `MANIFEST.MF`. For example`Implementation-Title: MyApp` is printed as `MyApp`.

在你的banner.txt的文件中，你可以使用下面的占位符

${application.version} 这个是你应用的版本号，这个定义在MANIFEST.MF。例如，Implementation-Version:1.0将会打印的是1.0

${application.formatted-version}这个也是你应用的版本号，这个版本号再MANINEST.MF的文件中，并且格式化显示（用括号和前缀v）.例如（v1.0）

${spring-boot.version} spring的版本号

${spring-boot.formatted-version} springBoot版本号的格式化显示

等。。。。。

来源： https://docs.spring.io/spring-boot/docs/2.1.1.RELEASE/reference/htmlsingle/#using-boot-devtools-remote


	The `SpringApplication.setBanner(…)` method can be used if you want to generate a banner programmatically. Use the `org.springframework.boot.Banner` interface and implement your own `printBanner()` method.

SpringApplication.setBanner（。。）是当你想生成banner的方法时使用，使用org.springframework.boot.Banner的接口和实现你自己printBanner()的方法使用

就翻译到这里吧，下面的页没有太理解就不翻译了,然后我们开始自定义启动程序是在log中打印的banner

第一步、在Spring-Boot的项目中resource的文件下建一个banner.txt 编码格式是utf-8形式的(不要管banner.jpg,只需建一个banner.txt文件就可以，banner.jpg是用来测试启动图片的一会

儿会讲)