SpringCloud之分布式配置Config(一)

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统一的配置管理中心

所需资源

1. 一个服务端

2. 一个客户端

3. 一个Git配置中心仓库

服务端使用端口:8888

客户端使用端口:9000

先来开发服务端

三个步骤

1. 添加依赖

2. server的配置文件:application.properties

3. 启动类添加注解

看一下具体的操作步骤

添加依赖,完整的pom.xml文件

<?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>

    <groupId>com.example</groupId>
    <artifactId>learn03-config</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>learn03-config</name>
    <description>Demo project for Spring Boot</description>

    <repositories>
        <repository>
            <id>alimaven</id>
            <name>aliyun maven</name>
            <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
        </repository>
    </repositories>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </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.cloud</groupId>
            <artifactId>spring-cloud-config-server</artifactId>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Dalston.SR1</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


</project>

完整的application.properties文件

server.port=8888spring.cloud.config.server.git.uri=https://git.oschina.net/sjk707069921/config-file.git//配置文件所在git仓库地址

启动类添加注解@EnableConfigServer

@SpringBootApplication@EnableConfigServerpublic class Learn03ConfigApplication {    public static void main(String[] args) {
        SpringApplication.run(Learn03ConfigApplication.class, args);
    }
}

服务端到此完成,但是别着急

git仓库还没创建

创建git仓库,提交两个文件

database-dev.properties

database.properties

内容也很简单

database-dev.properties文件内容

hello=dev file

database.properties文件内容

hello=this is product file

OK,到现在可以启动服务端,打开浏览器看一下 http://localhost:8888/database/dev

看到以下json表示服务端是OK的

444950aa-246f-49e4-be50-d9fc99cf9244.png

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接下来  开发客户端

也是三步

1. 添加依赖

2. 修改配置文件

3. 测试

新建一个项目,添加依赖

<?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>

    <groupId>com.example</groupId>
    <artifactId>config-client</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>config-client</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <repositories>
        <repository>
            <id>alimaven</id>
            <name>aliyun maven</name>
            <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
        </repository>
    </repositories>


    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-config</artifactId>
                <version>1.3.1.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>

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

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build></project>

然后配置文件,这里注意,不能使用默认的application,propertis,而应将其重命名为bootstrap.properties

spring.application.name=database  #这里要对应配置文件的名字spring.cloud.config.profile=prod  #使用哪个profilespring.cloud.config.label=master  #git仓库的分支spring.cloud.config.uri=http://localhost:8888/  #服务器的地址server.port=9000

OK,然后在启动类写一个测试,获取,并打印配置文件中的值

@SpringBootApplication@EnableAutoConfiguration@RestControllerpublic class ConfigClientApplication {    public static void main(String[] args) {
        SpringApplication.run(ConfigClientApplication.class, args);
    }    @Value("${hello}")    private String foo;    @GetMapping("/hi")    public String hi(){
        System.err.println(foo);        return
                foo;
    }
}

打开浏览器 ,访问  http://localhost:9000/hi

看到如下输出

c54cbb6b-61fe-4e0a-8053-4ee98285d8b7.png

至此,简单的配置中心开发完成.

作者：罗曼蒂克
链接：https://www.jianshu.com/p/0cb5c94ce485