Spring Cloud SpringCloud 自学课程3 SpringCloud Data JPA + PostgreSQL

实例代码：https://github.com/michaelzhanghe/springcloud-03-licensingservice.git

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<?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.cloudlearning</groupId>
	<artifactId>springcloud-03-licensingservice</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>

	<name>springcloud-03-licensingservice</name>
	<description>Demo project for Spring Boot</description>

	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.0.1.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.M9</spring-cloud.version>
	</properties>

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-actuator</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-data-jpa</artifactId>
		</dependency>
		<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>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-config-client</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.security</groupId>
			<artifactId>spring-security-rsa</artifactId>
		</dependency>

		<dependency>
			<groupId>com.h2database</groupId>
			<artifactId>h2</artifactId>
			<version>1.4.196</version>
		</dependency>
		<dependency>
			<groupId>postgresql</groupId>
			<artifactId>postgresql</artifactId>
			<version>9.1-901.jdbc4</version>
		</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>

	<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>

schema.sql: 创建数据库表的SQL语句

DROP TABLE IF EXISTS licenses;

CREATE TABLE licenses (
  license_id        VARCHAR(100) PRIMARY KEY NOT NULL,
  organization_id   TEXT NOT NULL,
  license_type      TEXT NOT NULL,
  product_name      TEXT NOT NULL,
  license_max       INT   NOT NULL,
  license_allocated INT,
  comment           VARCHAR(100));


INSERT INTO licenses (license_id,  organization_id, license_type, product_name, license_max, license_allocated)
VALUES ('f3831f8c-c338-4ebe-a82a-e2fc1d1ff78a', 'e254f8c-c442-4ebe-a82a-e2fc1d1ff78a', 'user','customer-crm-co', 100,5);
INSERT INTO licenses (license_id,  organization_id, license_type, product_name, license_max, license_allocated)
VALUES ('t9876f8c-c338-4abc-zf6a-ttt1', 'e254f8c-c442-4ebe-a82a-e2fc1d1ff78a', 'user','suitability-plus', 200,189);
INSERT INTO licenses (license_id,  organization_id, license_type, product_name, license_max, license_allocated)
VALUES ('38777179-7094-4200-9d61-edb101c6ea84', '442adb6e-fa58-47f3-9ca2-ed1fecdfe86c', 'user','HR-PowerSuite', 100,4);
INSERT INTO licenses (license_id,  organization_id, license_type, product_name, license_max, license_allocated)
VALUES ('08dbe05-606e-4dad-9d33-90ef10e334f9', '442adb6e-fa58-47f3-9ca2-ed1fecdfe86c', 'core-prod','WildCat Application Gateway', 16,16);

访问本地的configuration server暴露的8888端口，调用default环境的配置文件

在Git repos上的配置文件的命名规则是要跟bootstrap.yml中的配置匹配：

${spring.application.name}-${spring.profiles.active}.yml

创建controller

package com.cloudlearning.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.cloudlearning.config.ServiceConfig;

import org.springframework.web.bind.annotation.GetMapping;


@RestController
public class LicenseServiceController {

    @Autowired
    private ServiceConfig serviceConfig;

    @GetMapping(value="/licensingservice")
    public String getExampleProperty() {
        return serviceConfig.getExampleProperty();
    }

}

创建service

package com.cloudlearning.config;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component
public class ServiceConfig{

  @Value("${example.property}")
  private String exampleProperty;

  public String getExampleProperty(){
    return exampleProperty;
  }
}

浏览器访问controller中定义的URI：/licensingservice，将返回在Git上default环境springcloud-03-licensingservice.yml中的example.property的值"I AM IN THE DEFAULT"

测试：

1. 启动configuration server：springcloud-02-confsrv

从log文件中可以看到对应调用的springcloud-03-licensingservice.yml

2018-04-18 11:48:50.639  INFO 4608 --- [nio-8888-exec-3] o.s.c.c.s.e.NativeEnvironmentRepository  : Adding property source: file:/C:/Users/Administrator/AppData/Local/Temp/config-repo-8073690710026718888/licensingservice/springcloud-03-licensingservice.yml

2. 启动licensingservice： springcloud-03-licensingservice