Spring Cloud Config如何使用本地配置文件

本篇內容主要講解“Spring Cloud Config如何使用本地配置文件”，感興趣的朋友不妨來看看。本文介紹的方法操作簡單快捷，實用性強。下面就讓小編來帶大家學習“Spring Cloud Config如何使用本地配置文件”吧!

一、簡介

在分布式系統中，由于服務數量巨多，為了方便服務配置文件統一管理，實時更新，所以需要分布式配置中心組件。

在Spring Cloud中，有分布式配置中心組件spring cloud config ，它支持配置服務放在配置服務的內存中（即本地），也支持放在遠程Git倉庫中。

在spring cloud config 組件中，分兩個角色，一是config server，二是config client。

二、配置

2.1 Spring Cloud Config Server項目

1 pom.xml中導入Config Server需要的包

<dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-config-server</artifactId>
        </dependency>

2 在Application類中添加@EnableConfigServer注解

package com.sunbufu;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.config.server.EnableConfigServer;
@EnableConfigServer
@SpringBootApplication
public class ConfigServerApplication {
    public static void main(String[] args) {
        SpringApplication.run(ConfigServerApplication.class, args);
    }
}

3 修改配置文件application.yml，指定本地客戶端配置文件的路徑

spring:
  profiles:
    active: native
  cloud:
    config:
      server:
        native:
          searchLocations: F:/conf

4 準備客戶端配置文件

client-dev.yml文件的內容：

server:
  #設置成0，表示任意未被占用的端口
  port: 8081
nickName: world

2.2 Spring Cloud Config Client項目

1 pom.xml中導入Config Client需要的包（注意，此處跟Config Server的配置不同）

<dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
        </dependency>

2 在src/main/resources中，新建bootstrap.yml文件

bootstrap文件會在application文件之前加載，一般是不會變的。

spring:
  application:
    name: client
  cloud:
    config:
      uri: http://127.0.0.1:8888
      profile: dev
      label: master

資源文件映射如下：

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

3 新建HelloController用來顯示讀取到的配置

package com.sunbufu.controller;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class HelloController {
    @Value("${nickName}")
    private String nickName;
    @RequestMapping("/hello")
    public String hello() {
        return "hello " + nickName;
    }
}

三、總結

源碼地址 ：https://github.com/sunbufu/sunbufu-cloud

總覺的使用svn或者git不如直接修改配置文件方便，特此記錄下來。

spring cloud config本地讀取配置文件

1、創建maven項目，引入spring boot 起步依賴

<?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 https://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>2.1.7.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.wxz</groupId>
    <artifactId>cloud-config-demo3</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>cloud-config-demo3</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</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>

新建config-server 模塊，引入依賴

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>com.wxz</groupId>
        <artifactId>cloud-config-demo3</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.wxz</groupId>
    <artifactId>config-server</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>config-server</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-config-server</artifactId>
            <version>2.1.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

2、配置文件：

spring:
  cloud:
    config:
      server:
        native:
          search-locations: classpath:/shared
  profiles:
    active: native
  application:
    name: config-server
server:
  port: 8769

在resources下新建目錄shared，里面新建文件config-client-dev

server:
  port: 8762
foo: foo version 1

在啟動類添加

@EnableConfigServer

新建config-client模塊

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>com.wxz</groupId>
        <artifactId>cloud-config-demo3</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.wxz</groupId>
    <artifactId>config-client</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>config-client</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-config</artifactId>
            <version>2.1.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

新建配置文件bootstrap.yml(bootstrap比application具有優先的讀取順序)

spring:
  cloud:
    config:
      uri: http://localhost:8769
      fail-fast: true
  application:
    name: config-client
  profiles:
    active: dev

新建一個controller進行測試：

package com.wxz.configclient.controller;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
/**
 * @author Wangxingze
 * @date 2019-08-26 12:58
 */
@RestController
public class Test {
    @Value("${foo}")
    public String  foo;
    @GetMapping("/t")
    public String t(){
        return foo;
    }
}

依次啟動server client,啟動時可以看到讀取了配置文件和啟動黛安克，訪問：

注意：spring boot 和cloud的版本以及config依賴的版本

<groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.7.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->

我這里好像沒有指定spring cloud 的版本呀

config的相關依賴使用：<version>2.1.2.RELEASE</version>

到此，相信大家對“Spring Cloud Config如何使用本地配置文件”有了更深的了解，不妨來實際操作一番吧！這里是億速云網站，更多相關內容可以進入相關頻道進行查詢，關注我們，繼續學習！