環境說明

java 1.8 idea 2018.x spring boot 2.0.5

consul 安裝與啟動

在 docker-compose.yml 把不需要用到的給註釋掉,不 註釋掉也不影響 執行如下,

cd docker

docker-compose up

foxwho.風

手冊

建立測試案例

瀏覽器訪問

http://localhost:8500/ui/dc1/kv

點選create按鈕,建立

config/application,dev/data

內容

config:
	title: 這是基礎,你知道:後面還有一個空格碼

如圖 依葫蘆畫瓢,新增的引數如下

config/application/data
#內容是>>>
 

config:
	title: 這是所有應用預設配置

config/server-demo,dev/data
#內容是>>>
config:
	title: 這是dev開發版demo

config/server-demo/data	
#內容是>>>
config:
	title: 這是正式版demo

idea 建立SpringBoot2 Spring Cloud consul 案例

pom.xml 完整配置如下

<?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.foxwho</groupId>
    <artifactId>server-demo</artifactId>
    <
 
version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>server-demo</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.5.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <spring-cloud.version>Finchley.SR1</spring-cloud.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-consul-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-consul-discovery</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</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>

入口如下

package com.foxwho.consul.demo001;

import com.foxwho.consul.demo001.model.Config;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;

@SpringBootApplication
@EnableDiscoveryClient
@EnableConfigurationProperties({Config.class})//指定配置類
public class ConsulDemo001Application {

    public static void main(String[] args) {
        SpringApplication.run(ConsulDemo001Application.class, args);
    }
}

Config 類

package com.foxwho.consul.demo001.model;

import org.springframework.boot.context.properties.ConfigurationProperties;

//title要與consul上面的config:下 title寫的一樣，consul上面可以寫多級目錄 例如： config： title: 這是標題
//對應bootstrap.yml 中的 config
@ConfigurationProperties(prefix = "config")
public class Config {
    private String title; //name要與consul上面的title寫的一樣

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    @Override
    public String toString() {
        return "title : ["+title+"] ";
    }
}

控制器

package com.foxwho.consul.demo001.controller;

import com.foxwho.consul.demo001.model.Config;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class DemoController {
    @Autowired
    private Config config;

    @RequestMapping(value = "/getConfig")
    public String getConfig() {
        return config.toString();
    }

    @RequestMapping(value = "/getTitle")
    public String getTitle() {
        return config.getTitle();
    }
}

瀏覽器效果

http://localhost:8010/getTitle

原始碼