spring cloud config 入门

2022-11-10 18:20:56

简介

Spring cloud config 分为两部分 server client

config-server 配置服务端，服务管理配置信息
config-client 客户端，客户端调用server端暴露接口获取配置信息

config-server

创建config-server

首先创建config-server工程.

文件结构：

├── config-server.iml

├── pom.xml

└── src

    ├── main

    │   ├── java

    │   │   └── com

    │   │       └── lkl

    │   │           └── springcloud

    │   │               └── config

    │   │                   └── server

    │   │                       └── Application.java

    │   └── resources

    │       ├── application.properties

    │       └── bootstrap.properties

    └── test

        └── java

pom.xml内容：

<?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>

    <parent>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-parent</artifactId>

        <version>1.2.3.RELEASE</version>

        <relativePath /> <!-- lookup parent from repository -->

    </parent>

    <groupId>com.lkl.springcloud</groupId>

    <artifactId>spring-cloud-config-server</artifactId>

    <version>1.0-SNAPSHOT</version>

    <dependencyManagement>

        <dependencies>

            <dependency>

                <groupId>org.springframework.cloud</groupId>

                <artifactId>spring-cloud-config</artifactId>

                <version>1.0.4.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>

        <!--表示为web工程-->

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-web</artifactId>

        </dependency>

        <!--暴露各种指标-->

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-actuator</artifactId>

        </dependency>

        <dependency>

            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-config-server</artifactId>

        </dependency>

    </dependencies>

    <build>

        <plugins>

            <plugin>

                <groupId>org.springframework.boot</groupId>

                <artifactId>spring-boot-maven-plugin</artifactId>

            </plugin>

        </plugins>

    </build>

</project>

创建启动类
Application.Java

package com.lkl.springcloud.config.server;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.EnableAutoConfiguration;

import org.springframework.cloud.config.server.EnableConfigServer;

import org.springframework.context.annotation.Configuration;

import org.springframework.web.bind.annotation.RestController;

/**

 * Created by liaokailin on 16/4/28.

 */

@Configuration

@EnableAutoConfiguration

@RestController

@EnableConfigServer

public class Application {

    public static void main(String[] args) {

        SpringApplication.run(Application.class, args);

    }

}

其中 @EnableConfigServer为关键注解

在resources文件下创建application.properties

server.port=8888

application:表示应用名称,在client中通过spring.config.name配置
profile:表示获取指定环境下配置，例如开发环境、测试环境、生产环境默认值default，实际开发中可以是 dev、test、demo、production等
label: git标签，默认值master

如果application名称为foo，则可以采用如下方式访问：

http://localhost:8888/foo/default
http://localhost:8888/foo/development

只要是按照上面的规则配置即可访问.

config-client

创建config-client

目录结构如下：

├── pom.xml

├── spring-cloud-config-client.iml

└── src

    ├── main

    │   ├── java

    │   │   └── com

    │   │       └── lkl

    │   │           └── springcloud

    │   │               └── config

    │   │                   └── client

    │   │                       └── Application.java

    │   └── resources

    │       └── bootstrap.yml

    └── test

        └── java

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>

    <groupId>com.lkl.springcloud</groupId>

    <artifactId>spring-cloud-config-client</artifactId>

    <version>1.0-SNAPSHOT</version>

    <parent>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-parent</artifactId>

        <version>1.2.3.RELEASE</version>

        <relativePath /> <!-- lookup parent from repository -->

    </parent>

    <dependencyManagement>

        <dependencies>

            <dependency>

                <groupId>org.springframework.cloud</groupId>

                <artifactId>spring-cloud-starter-parent</artifactId>

                <version>1.0.1.RELEASE</version>

                <type>pom</type>

                <scope>import</scope>

            </dependency>

        </dependencies>

    </dependencyManagement>

    <dependencies>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-web</artifactId>

        </dependency>

        <dependency>

            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-config-client</artifactId>

        </dependency>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-actuator</artifactId>

        </dependency>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-test</artifactId>

            <scope>test</scope>

        </dependency>

    </dependencies>

    <repositories>

        <repository>

            <id>spring-milestones</id>

            <name>Spring Milestones</name>

            <url>http://repo.spring.io/milestone</url>

            <snapshots>

                <enabled>false</enabled>

            </snapshots>

        </repository>

    </repositories>

    <pluginRepositories>

        <pluginRepository>

            <id>spring-milestones</id>

            <name>Spring Milestones</name>

            <url>http://repo.spring.io/milestone</url>

            <snapshots>

                <enabled>false</enabled>

            </snapshots>

        </pluginRepository>

    </pluginRepositories>

    <build>

        <plugins>

            <plugin>

                <groupId>org.springframework.boot</groupId>

                <artifactId>spring-boot-maven-plugin</artifactId>

            </plugin>

        </plugins>

    </build>

</project>

创建启动类Application.java

package com.lkl.springcloud.config.client;

import org.springframework.beans.factory.annotation.Value;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RestController;

/**

 * Created by liaokailin on 16/4/28.

 */

@SpringBootApplication

@RestController

public class Application {

    @Value("${name:World!}")

    String bar;

    @RequestMapping("/")

    String hello() {

        return "Hello " + bar + "!";

    }

    public static void main(String[] args) {

        SpringApplication.run(Application.class, args);

    }

}

创建bootstrap.properties文件，其内容如下：

spring.application.name: foo

spring.cloud.config.env:default

spring.cloud.config.label:master

spring.cloud.config.uri:http://localhost:8888

其中 spring.application.name 为应用名称，spring.cloud.config.uri 配置config-server暴露的获取配置接口,其默认值为http://localhost:8888
第二三项配置在前面已经提到过，配置的都为默认值，因此bootstrap.properties只需要配置应用名即可.

运行config-client

访问 http://localhost 得到 `Hello liaokailin` 获取到git上的配置信息

访问 http://localhost/env 得到所有的配置信息，可以发现获取配置信息成功.

{

profiles: [ ],

configService:https://github.com/liaokailin/config-repo/foo.properties: {

name: "liaokailin",

foo: "devoxxfr"

},

configService:https://github.com/liaokailin/config-repo/application.yml: {

info.description: "Spring Cloud Samples--lkl",

info.url: "https://github.com/spring-cloud-samples",

eureka.client.serviceUrl.defaultZone: "http://localhost:8761/eureka/"

},

commandLineArgs: {

spring.output.ansi.enabled: "always"

},

servletContextInitParams: { },

...}

ok ~ it’s work ! more about is here

http://blog.csdn.net/liaokailin/article/details/51307215

码农公寓

简介

config-server

创建config-server

config-client

创建config-client

运行config-client

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