springboot maven配置文件外置
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配置文件默认加载方式
springboot 应用启动时，会自动从以下位置加载配置文件
类路径：类路径根目录、类路径下的config目录
项目路径：项目路径、项目路径下的config目录、项目路径下config目录的直接子目录
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示例
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配置文件
application.yml
person:
name: gtlx
age: 20
****************
pojo 层
Person
@Data
@Component
@ConfigurationProperties("person")
public class Person {
private String name;
private Integer age;
}
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controller 层
HelloController
@RestController
public class HelloController {
@Resource
private Person person;
@RequestMapping("/hello")
public String hello(){
System.out.println(person);
return "success";
}
}
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配置文件默认打包
pom.xml(build部分)
<build>
<finalName>hello</finalName>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<excludes>
<exclude>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</build>
maven 打包
解压 hello.jar
配置文件存放在BOOT-INF/classes目录下
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配置文件存放在jar包外
pom.xml（build部分）
<build>
<finalName>hello</finalName>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<excludes>
<exclude>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
<resources>
<resource>
<targetPath>${build.directory}/config</targetPath>
<directory>src/main/resources</directory>
<includes>
<include>*.properties</include>
</includes>
</resource>
</resources>
</build>
maven 打包
配置文件在target/config目录中
解压 hello.jar
BOOT-INF/classes目录下没有配置文件
读取jar包外配置文件测试
# terminal 跳转到target目录
E:\java\IdeaProjects\springboot maven 配置文件>cd target
# 运行jar包, localhost:8080/hello，控制台输出
E:\java\IdeaProjects\springboot maven 配置文件\target>java -jar hello.jar
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.5.5)
2021-09-30 19:05:51.776 INFO 15740 --- [ main] com.example.demo.DemoApplication : Starting DemoApplication v0.0.1-SN
APSHOT using Java 15 on LAPTOP-D73GD8TE with PID 15740 (E:\java\IdeaProjects\springboot maven 配置文件\target\hello.jar started by 2840
1 in E:\java\IdeaProjects\springboot maven 配置文件\target)
2021-09-30 19:05:51.782 INFO 15740 --- [ main] com.example.demo.DemoApplication : No active profile set, falling bac
k to default profiles: default
2021-09-30 19:05:53.624 INFO 15740 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8
080 (http)
2021-09-30 19:05:53.643 INFO 15740 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2021-09-30 19:05:53.643 INFO 15740 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache T
omcat/9.0.53]
2021-09-30 19:05:53.643 INFO 15740 --- [ main] o.a.catalina.core.AprLifecycleListener : An older version [1.2.23] of the A
pache Tomcat Native library is installed, while Tomcat recommends a minimum version of [1.2.30]
2021-09-30 19:05:53.643 INFO 15740 --- [ main] o.a.catalina.core.AprLifecycleListener : Loaded Apache Tomcat Native librar
y [1.2.23] using APR version [1.7.0].
2021-09-30 19:05:53.643 INFO 15740 --- [ main] o.a.catalina.core.AprLifecycleListener : APR capabilities: IPv6 [true], sen
dfile [true], accept filters [false], random [true], UDS [false].
2021-09-30 19:05:53.643 INFO 15740 --- [ main] o.a.catalina.core.AprLifecycleListener : APR/OpenSSL configuration: useAprC
onnector [false], useOpenSSL [true]
2021-09-30 19:05:53.659 INFO 15740 --- [ main] o.a.catalina.core.AprLifecycleListener : OpenSSL successfully initialized [
OpenSSL 1.1.1c 28 May 2019]
2021-09-30 19:05:53.784 INFO 15740 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebAp
plicationContext
2021-09-30 19:05:53.784 INFO 15740 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initia
lization completed in 1888 ms
2021-09-30 19:05:54.460 INFO 15740 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (h
ttp) with context path ''
2021-09-30 19:05:54.476 INFO 15740 --- [ main] com.example.demo.DemoApplication : Started DemoApplication in 3.541 s
econds (JVM running for 4.407)
2021-09-30 19:06:01.366 INFO 15740 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring DispatcherServ
let 'dispatcherServlet'
2021-09-30 19:06:01.366 INFO 15740 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Initializing Servlet 'dispatcherSe
rvlet'
2021-09-30 19:06:01.367 INFO 15740 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Completed initialization in 0 ms
# 可以读取jar包外配置文件
Person(name=gtlx, age=20)