Spring Cloud实践之集中配置Spring-config

将一个系统中各个应用的配置文件集中起来，方便管理。

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

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

@SpringBootApplication

@EnableConfigServer

public class ConfigApplication {

    public static void main(String[] args) {

        SpringApplication.run(ConfigApplication.class, args);

    }

}

如上，对一个spring boot应用加上@EnableConfigServer就可以将其变成一个集中配置服务。

build.gradle文件:

buildscript {

    ext {

        springBootVersion = '1.4.2.RELEASE'

    }

    repositories {

        mavenCentral()

        jcenter()

    }

    dependencies {

        classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")

    }

}

// Apply the java-library plugin to add support for Java Library

apply plugin: 'java-library'

apply plugin: 'java'

apply plugin: 'org.springframework.boot'

version = '0.0.1-SNAPSHOT'

sourceCompatibility = 1.8

// In this section you declare where to find the dependencies of your project

repositories {

    // Use jcenter for resolving your dependencies.

    // You can declare any Maven/Ivy/file repository here.

    jcenter()

    mavenCentral()

    maven { url  "http://dl.bintray.com/oembedler/maven" }

    maven { url "https://repo.spring.io/libs-release" }

    maven { url "http://10.100.122.249:8881/nexus/content/groups/public/" }

}

dependencyManagement {

  imports {

    //mavenBom 'org.springframework.cloud:spring-cloud-netflix:1.2.0.M1'

    mavenBom 'org.springframework.cloud:spring-cloud-dependencies:Camden.SR2'

  }

}

dependencies {

    // Use JUnit test framework

    testImplementation 'junit:junit:4.12'

    // https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-config-server

    compile("org.springframework.cloud:spring-cloud-starter-parent:Camden.SR2")

    compile("org.springframework.boot:spring-boot-starter-security")

      compile("org.springframework.cloud:spring-cloud-config-server")

    compile("org.springframework.boot:spring-boot-starter-web")

    compile("org.springframework.boot:spring-boot-starter-actuator")

}

config server自己的配置文件如下：

spring:

  cloud:

    config:

      server:

        native:

          searchLocations: classpath:/shared

  profiles:

     active: native

server:

  port: 8888

security:

  user:

    password: root

native代表将各个接入应用的配置文件放在config server的本地目录，这里放在classpath:/shared ;并对接入应用开启验证，用户名user密码root; 
启动config server，验证http://localhost:8888/demo/application.property （这里假设在shared目录放入了demo应用的配置文件demo.property）

再来看看接入应用如何使用这个config server
在demo应用中：

//在dependencies中加入

compile("org.springframework.cloud:spring-cloud-starter-parent:Camden.SR2")

compile("org.springframework.cloud:spring-cloud-starter-config")

//在build.gradle根下加入如下依赖项

dependencyManagement {

imports {

　　mavenBom 'org.springframework.cloud:spring-cloud-dependencies:Camden.SR2'

　　}

}

* 将项目resource下application.properties文件复制到server-config resource下的shared文件夹中
并重命名为项目名.properties，如demo项目，命名为demo.properties
* 清空application.properties内容
3. 在resource下新建bootstrap.yml文件（以demo项目举例）

spring:

  application:

    name: demo

  profiles:

    active: default

  cloud:

    config:

      uri: http://localhost:8888/

      name: demo

      fail-fast: true

      password: root

      username: user

巴特西

Spring Cloud实践之集中配置Spring-config

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