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demo-helloworld,properties,actuator,admin-server/client

article 2025/1/10 2:29:06

spring-boot-demo-helloworld

Runing spring boot demo helloworld

 $ mvn spring-boot:run

pom.xml

<?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>
    <artifactId>spring-boot-demo-helloworld</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <packaging>jar</packaging>
    <parent>
        <groupId>com.xkcoding</groupId>
        <artifactId>spring-boot-demo</artifactId>
        <version>1.0.0-SNAPSHOT</version>
    </parent>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
        </dependency>
    </dependencies>
    <build>
        <finalName>spring-boot-demo-helloworld</finalName>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

SpringBootDemoHelloworldApplication.java

@SpringBootApplication
@RestController
public class SpringBootDemoHelloworldApplication {
    public static void main(String[] args) {
        SpringApplication.run(SpringBootDemoHelloworldApplication.class, args);
    }
    @GetMapping("/hello")
    public String sayHello(@RequestParam(required = false, name = "who") String who) {
        if (StrUtil.isBlank(who)) {
            who = "World";
        }
        return StrUtil.format("Hello, {}!", who);
    }
}

application.yml

server:
  port: 8080
  servlet:
    context-path: /demo

spring-boot-demo-properties

pom.xml

<?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>
    <artifactId>spring-boot-demo-properties</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <packaging>jar</packaging>
    <parent>
        <groupId>com.xkcoding</groupId>
        <artifactId>spring-boot-demo</artifactId>
        <version>1.0.0-SNAPSHOT</version>
    </parent>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--
        在 META-INF/additional-spring-configuration-metadata.json 中配置
        可以去除 application.yml 中自定义配置的红线警告，并且为自定义配置添加 hint 提醒
         -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>cn.hutool</groupId>
            <artifactId>hutool-all</artifactId>
        </dependency>
    </dependencies>
    <build>
        <finalName>spring-boot-demo-properties</finalName>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

ApplicationProperty.java

@Data
@Component
public class ApplicationProperty {
    @Value("${application.name}")
    private String name;
    @Value("${application.version}")
    private String version;
}

DeveloperProperty.java

@Data
@ConfigurationProperties(prefix = "developer")
@Component
public class DeveloperProperty {
    private String name;
    private String website;
    private String qq;
    private String phoneNumber;
}

PropertyController.java

@RestController
public class PropertyController {
    private final ApplicationProperty applicationProperty;
    private final DeveloperProperty developerProperty;
    @Autowired
    public PropertyController(ApplicationProperty applicationProperty, DeveloperProperty developerProperty) {
        this.applicationProperty = applicationProperty;
        this.developerProperty = developerProperty;
    }
    @GetMapping("/property")
    public Dict index() {
        return Dict.create().set("applicationProperty", applicationProperty).set("developerProperty", developerProperty);
    }
}

additional-spring-configuration-metadata.json

位置： src/main/resources/META-INF/additional-spring-configuration-metadata.json

{
    "properties": [
        {
            "name": "application.name",
            "description": "Default value is artifactId in pom.xml.",
            "type": "java.lang.String"
        },
        {
            "name": "application.version",
            "description": "Default value is version in pom.xml.",
            "type": "java.lang.String"
        },
        {
            "name": "developer.name",
            "description": "The Developer Name.",
            "type": "java.lang.String"
        },
        {
            "name": "developer.website",
            "description": "The Developer Website.",
            "type": "java.lang.String"
        },
        {
            "name": "developer.qq",
            "description": "The Developer QQ Number.",
            "type": "java.lang.String"
        },
        {
            "name": "developer.phone-number",
            "description": "The Developer Phone Number.",
            "type": "java.lang.String"
        }
    ]
}

spring-boot-demo-actuator

pom.xml

<?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>
    <artifactId>spring-boot-demo-actuator</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <packaging>jar</packaging>
    <parent>
        <groupId>com.xkcoding</groupId>
        <artifactId>spring-boot-demo</artifactId>
        <version>1.0.0-SNAPSHOT</version>
    </parent>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <build>
        <finalName>spring-boot-demo-actuator</finalName>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

application.yml

server:
  port: 8080
  servlet:
    context-path: /demo
# 若要访问端点信息，需要配置用户名和密码
spring:
  security:
    user:
      name: xkcoding
      password: 123456
management:
  # 端点信息接口使用的端口，为了和主系统接口使用的端口进行分离
  server:
    port: 8090
    servlet:
      context-path: /sys
  # 端点健康情况，默认值"never"，设置为"always"可以显示硬盘使用情况和线程情况
  endpoint:
    health:
      show-details: always
  # 设置端点暴露的哪些内容，默认["health","info"]，设置"*"代表暴露所有可访问的端点
  endpoints:
    web:
      exposure:
        include: '*'

端点暴露地址

将项目运行起来之后，会在控制台里查看所有可以访问的端口信息

  1. 打开浏览器，访问：http://localhost:8090/sys/actuator/mappings ，
    输入用户名(xkcoding)密码(123456)即可看到所有的mapping信息
  2. 访问：http://localhost:8090/sys/actuator/beans ，输入用户名(xkcoding)密码(123456)即可看到所有 Spring 管理的Bean
  3. 其余可访问的路径，参见文档

参考

  • actuator文档：
    https://docs.spring.io/spring-boot/docs/2.0.5.RELEASE/reference/htmlsingle/#production-ready
  • 具体可以访问哪些路径，参考:
    https://docs.spring.io/spring-boot/docs/2.0.5.RELEASE/reference/htmlsingle/#production-ready-endpoints

spring-boot-demo-admin-server

搭建一个 Spring Boot Admin 的服务端项目，可视化展示自己客户端项目的运行状态。

pom.xml

<?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>
  <artifactId>spring-boot-demo-admin-server</artifactId>
  <version>1.0.0-SNAPSHOT</version>
  <packaging>jar</packaging>

  <name>spring-boot-demo-admin-server</name>
  <description>Demo project for Spring Boot</description>
  <parent>
    <groupId>com.xkcoding</groupId>
    <artifactId>spring-boot-demo-admin</artifactId>
    <version>1.0.0-SNAPSHOT</version>
  </parent>
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <java.version>1.8</java.version>
  </properties>
  <dependencies>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
      <groupId>de.codecentric</groupId>
      <artifactId>spring-boot-admin-starter-server</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
      <scope>test</scope>
    </dependency>
  </dependencies>
  <build>
    <finalName>spring-boot-demo-admin-server</finalName>
    <plugins>
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
      </plugin>
    </plugins>
  </build>
</project>

SpringBootDemoAdminServerApplication.java

@EnableAdminServer
@SpringBootApplication
public class SpringBootDemoAdminServerApplication {
    public static void main(String[] args) {
        SpringApplication.run(SpringBootDemoAdminServerApplication.class, args);
    }
}

application.yml

server:
  port: 8000

spring-boot-demo-admin-client

pom.xml

<?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>
  <artifactId>spring-boot-demo-admin-client</artifactId>
  <version>1.0.0-SNAPSHOT</version>
  <packaging>jar</packaging>
  <parent>
    <groupId>com.xkcoding</groupId>
    <artifactId>spring-boot-demo-admin</artifactId>
    <version>1.0.0-SNAPSHOT</version>
  </parent>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <java.version>1.8</java.version>
  </properties>
  <dependencies>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
      <groupId>de.codecentric</groupId>
      <artifactId>spring-boot-admin-starter-client</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-security</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
      <scope>test</scope>
    </dependency>
  </dependencies>
  <build>
    <finalName>spring-boot-demo-admin-client</finalName>
    <plugins>
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
      </plugin>
    </plugins>
  </build>
</project>

application.yml

server:
  port: 8080
  servlet:
    context-path: /demo
spring:
  application:
    # Spring Boot Admin展示的客户端项目名，不设置，会使用自动生成的随机id
    name: spring-boot-demo-admin-client
  boot:
    admin:
      client:
        # Spring Boot Admin 服务端地址
        url: "http://localhost:8000/"
        instance:
          metadata:
            # 客户端端点信息的安全认证信息
            user.name: ${spring.security.user.name}
            user.password: ${spring.security.user.password}
  security:
    user:
      name: xkcoding
      password: 123456
management:
  endpoint:
    health:
      # 端点健康情况，默认值"never"，设置为"always"可以显示硬盘使用情况和线程情况
      show-details: always
  endpoints:
    web:
      exposure:
        # 设置端点暴露的哪些内容，默认["health","info"]，设置"*"代表暴露所有可访问的端点
        include: "*"

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