Spring Cloud Config入门(本地配置)
2024-09-01 21:39:39
spring cloud config 简介
- Spring Cloud Config为分布式系统中的外部化配置提供服务器和客户端支持。使用Config Server,您可以在所有环境中管理应用程序的外部属性。
- Spring Cloud Config 分为两个部分 ,server端和client端。
server端配置服务器,管理配置信息
client端获取配置信息
创建并运行一个Spring Cloud Config Server
- 创建一个名为config-server的应用,并添加spring-cloud-starter-parent,spring-cloud-config-server依赖,pom信息具体如下
<?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.zcr.test</groupId>
<artifactId>config-server</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>config-server</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.2.RELEASE</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.cloud</groupId>
<artifactId>spring-cloud-config-server</artifactId>
</dependency> <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency> <dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Camden.SR6</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> - 创建application主类,并添加@EnableConfigServer注解,代码如下
package com.zcr.spring; import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.config.server.EnableConfigServer; @SpringBootApplication
@EnableConfigServer
public class ConfigServerApplication {
public static void main(String[] args) {
SpringApplication.run(ConfigServerApplication.class,args);
}
} - 在本地创建一个配置文件db-service-dev.properties,格式如下
sck.type=sck
sck.url=jdbc:oracle:thin:@10.1.50.205:1521:orcl
sck.class=oracle.jdbc.driver.OracleDriver
sck.user=sddb
sck.password=sddb
eom.type=eom
eom.url=jdbc:oracle:thin:@10.1.50.205:1521:orcl
eom.class=oracle.jdbc.driver.OracleDriver
eom.user=eom
eom.password=eom - 在resources文件夹下创建application.properties,内容如下
#tomcat端口号
server.port=8888
#配置文件在本地
spring.profiles.active=native
#配置文件的目录
spring.cloud.config.server.native.search-locations=D:/workspace/GitHub/spring-config/config-file目录结构:
- 运行应用并打开网址http://localhost:8888/db-service/dev,出现如下页面,证明配置文件发布成功
创建并运行一个Spring Cloud Config Client
- 创建一个名为config-client的应用,并添加spring-cloud-starter-parent,spring-cloud-starter-config,spring-boot-starter-web依赖,pom信息具体如下
<?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.zcr.spring</groupId>
<artifactId>config-client</artifactId>
<version>1.0-SNAPSHOT</version>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.2.RELEASE</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.cloud</groupId>
<artifactId>spring-cloud-starter-config</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>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Dalston.RC1</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> <repositories>
<repository>
<id>spring-milestones</id>
<name>Spring Milestones</name>
<url>https://repo.spring.io/milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories> </project> - 在resources中创建bootstrap.properties(bootstrap.yml会在应用启动之前读取),格式如下
#文件名
spring.application.name=db-service
#文件模式,默认为default
spring.cloud.config.profile=dev
#server端ip地址
spring.cloud.config.uri= http://localhost:8888/
#client端ip端口
server.port=8881 - 创建一个controller
package com.zcr.spring; 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; @SpringBootApplication
@RestController
public class ConfigClientApplication {
public static void main(String[] args) {
SpringApplication.run(ConfigClientApplication.class, args);
}
@Value("${sck.user}")
String sckUser;
@Value("${sck.password}")
String sckPassword; @RequestMapping("/hello")
public String showUserAndPassword(){
String sb = "username is " + sckUser + "," + "password is " +sckPassword;
return sb;
}
} - 启动Application,并访问http://localhost:8881/hello,出现如下界面,成功
遗留问题:1.初始化时,注入在static代码块之后,故静态代码块无法获取远程配置信息。
2.对spring了解浅。不懂内部原理,bug调试过程中比较费劲。
3.对spring中的注解不了解。
源码地址:https://github.com/310834626/spring-cloud-config
参考:http://www.jianshu.com/p/69dea19abf04
http://blog.didispace.com/springcloud4/
http://tech.lede.com/2017/06/12/rd/server/springCloudConfig/
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