springcloud(第一篇)springcloud config 入门

spring cloud config 入门

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：

<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>4.0.0modelVersion>

    <parent>
        <groupId>org.springframework.bootgroupId>
        <artifactId>spring-boot-starter-parentartifactId>
        <version>1.2.3.RELEASEversion>
        <relativePath /> 
    parent>

    <groupId>com.lkl.springcloudgroupId>
    <artifactId>spring-cloud-config-serverartifactId>
    <version>1.0-SNAPSHOTversion>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloudgroupId>
                <artifactId>spring-cloud-configartifactId>
                <version>1.0.4.RELEASEversion>
                <type>pomtype>
                <scope>importscope>
            dependency>
        dependencies>
    dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-configartifactId>
        dependency>

        
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-webartifactId>
        dependency>

        
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-actuatorartifactId>
        dependency>

        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-config-serverartifactId>
        dependency>

    dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.bootgroupId>
                <artifactId>spring-boot-maven-pluginartifactId>
            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

配置工程监听端口8888，默认情况下client通过读取http://localhost:8888获取配置信息

创建bootstrap.properties

spring.cloud.config.server.git.uri: https://github.com/liaokailin/config-repo

该配置信息通过fork https://github.com/spring-cloud-samples/config-repo 得到
通过spring.cloud.config.server.git.uri指定配置信息存储的git地址

运行config-server

spring boot工程很方便启动，运行Application.java即可

获取git上的资源信息遵循如下规则：

/{application}/{profile}[/{label}]
/{application}-{profile}.yml
/{label}/{application}-{profile}.yml
/{application}-{profile}.properties
/{label}/{application}-{profile}.properties

• 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

<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>4.0.0modelVersion>

    <groupId>com.lkl.springcloudgroupId>
    <artifactId>spring-cloud-config-clientartifactId>
    <version>1.0-SNAPSHOTversion>


    <parent>
        <groupId>org.springframework.bootgroupId>
        <artifactId>spring-boot-starter-parentartifactId>
        <version>1.2.3.RELEASEversion>
        <relativePath /> 
    parent>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloudgroupId>
                <artifactId>spring-cloud-starter-parentartifactId>
                <version>1.0.1.RELEASEversion>
                <type>pomtype>
                <scope>importscope>
            dependency>
        dependencies>
    dependencyManagement>


    <dependencies>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-webartifactId>
        dependency>
        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-config-clientartifactId>
        dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-actuatorartifactId>
        dependency>

        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-testartifactId>
            <scope>testscope>
        dependency>
    dependencies>
    <repositories>
        <repository>
            <id>spring-milestonesid>
            <name>Spring Milestonesname>
            <url>http://repo.spring.io/milestoneurl>
            <snapshots>
                <enabled>falseenabled>
            snapshots>
        repository>
    repositories>
    <pluginRepositories>
        <pluginRepository>
            <id>spring-milestonesid>
            <name>Spring Milestonesname>
            <url>http://repo.spring.io/milestoneurl>
            <snapshots>
                <enabled>falseenabled>
            snapshots>
        pluginRepository>
    pluginRepositories>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.bootgroupId>
                <artifactId>spring-boot-maven-pluginartifactId>
            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
转载请注明
http://blog.csdn.net/liaokailin/article/details/51307215

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