springboot maven配置文件外置

素颜马尾好姑娘i 2022-09-12 12:56 191阅读 0赞

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## springboot maven配置文件外置 ##

## \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* ##

**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**

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAb1_nk5znlLDmnY7kuItfbw_size_14_color_FFFFFF_t_70_g_se_x_16][]

**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

## \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* ##

**示例**

**\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\***

**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;
    }

**\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\***

**controller 层**

**HelloController**

@RestController
    public class HelloController {
    
        @Resource
        private Person person;
    
        @RequestMapping("/hello")
        public String hello(){
            System.out.println(person);
    
            return "success";
        }
    }

## \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* ##

**配置文件默认打包**

**pom.xml(build部分)**

**maven 打包**

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAb1_nk5znlLDmnY7kuItfbw_size_9_color_FFFFFF_t_70_g_se_x_16][]

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**解压 hello.jar**

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAb1_nk5znlLDmnY7kuItfbw_size_12_color_FFFFFF_t_70_g_se_x_16][]

**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**

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAb1_nk5znlLDmnY7kuItfbw_size_9_color_FFFFFF_t_70_g_se_x_16 2][]

**配置文件在target/config目录中**

**解压 hello.jar**

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAb1_nk5znlLDmnY7kuItfbw_size_12_color_FFFFFF_t_70_g_se_x_16 2][]

**BOOT-INF/classes目录下没有配置文件**

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAb1_nk5znlLDmnY7kuItfbw_size_12_color_FFFFFF_t_70_g_se_x_16 3][]

**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)

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