Spring Cloud Config(分散式配置中心)使用git作為遠端配置中心連線資料庫配置
為什麼要用SpringCloud分散式配置中心?
在分散式系統中,由於服務數量巨多,為了方便服務配置檔案統一管理,實時更新,所以需要分散式配置中心元件。
在SpringCloud中,有分散式配置中心元件spring cloud config,它支援配置服務放在配置服務的記憶體中(即本地),也支援放在遠端Git倉庫中。
在spring cloud config元件中,分兩個角色,config server (服務端) 和 config client (客戶端)。
config server (服務端) 端 pom.xml 配置
<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>cn.et</groupId>
<artifactId>SpringCould</artifactId>
<version> 0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.9.RELEASE</version>
</parent>
<dependencyManagement >
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Dalston.SR5</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-config-server</artifactId>
</dependency>
</dependencies>
</project>
application.properties 配置
spring.application.name=config-server
server.port=8089
spring.cloud.config.server.git.uri=https://github.com/UserName/SpringCloud
spring.cloud.config.server.git.searchPaths=/jdbc.properties
spring.cloud.config.server.git.username=UserName
spring.cloud.config.server.git.password=Password
server.port:設定埠 spring.cloud.config.server.git.uri:配置git倉庫地址
spring.cloud.config.server.git.searchPaths:配置倉庫路徑
spring.cloud.config.label:配置倉庫的分支(可略)
spring.cloud.config.server.git.username:訪問git倉庫的使用者名稱
spring.cloud.config.server.git.password:訪問git倉庫的使用者密碼
Main.java(入口) 啟動伺服器
@EnableConfigServer
@SpringBootApplication
public class AppLication {
public static void main(String[] args) {
new SpringApplicationBuilder(AppLication.class).web(true).run(args);
}
}
config client (客戶端) 端 pom.xml 配置
<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>cn.et</groupId>
<artifactId>SRPINGCLOUD-CONFIGCLIENT</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.9.RELEASE</version>
</parent>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Dalston.SR4</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<!-- 分散式配置中心 -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-config</artifactId>
</dependency>
<!-- 連線資料的starter -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<!-- 應用freemarker的starter -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-freemarker</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.44</version>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.5</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
</dependencies>
</project>
bootstarp.properties 配置
spring.cloud.config.uri=http://localhost:8089/
spring.application.name=jdbc
spring.cloud.config.profile=pro
spring.application.name=jdbc #資料庫連線配置
spring.cloud.config.uri=http://localhost:8089/ #指明配置服務中心的網址
spring.cloud.config.label#指明遠端倉庫的分支
spring.cloud.config.profile
- dev開發環境配置檔案
- test測試環境
- pro正式環境
application.properties 配置
spring.jpa.show-sql=true
server.port=80
server.context-path=/sb #設定上下文路徑(可略)
spring.devtools.restart.enabled=true
獲取資料來源 TestController.java
@Configuration
public class TestController {
@Value("${url}")
private String url;
@Value("$driverClass")
private String driverClass;
@Value("userid")
private String userid;
@Value("password")
private String password;
@Bean
//獲取資料來源
public DataSource getDataSource(){
//資料庫連線池
DruidDataSource dds = new DruidDataSource();
dds.setUrl(url);
dds.setDriverClassName(driverClass);
dds.setUsername(userid);
dds.setPassword(password);
return dds;
}
}
Main.java(入口)啟動客戶端
@SpringBootApplication
public class AppLication {
public static void main(String[] args) {
new SpringApplicationBuilder(AppLication.class).web(true);
}
}
這樣一個簡單的SpringCloud分散式配置中心就完成了。