Spring Cloud Config入门

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1、从github上下载最新版本
spring-cloud-config

2、编译并运行spring-cloud-config-server

cd spring-cloud-config-server
../mvnw spring-boot:run

如果运行mvnw遇到下面的错误，用vi处理一下就好了

/bin/sh^M: bad interpreter: No such file or directory

用vi处理一下

:set fileformat=unix

3、默认端口为8888，默认配置仓库为github
config-repo

支持以下访问语法：

#获取配置
/{application}/{profile}[/{label}]
/{application}-{profile}.properties
/{label}/{application}-{profile}.properties
/{application}-{profile}.yml
/{label}/{application}-{profile}.yml

#更新Environment、重新绑定@ConfigurationProperties、重置日志级别
/env
#刷新@RefreshScope
/refresh
#重启Spring上下文，默认是禁用的
/restart` for restarting the Spring context (disabled by default)
#调用ApplicationContext的stop及start等生命周期相关函数
/pause
/resume

我们来测试一下服务端运行情况：（服务端要可以连接到github上哦）

#foo.properties
curl localhost:8888/foo-master.properties
#foo.properties tag=v1.0.0.RC2
curl localhost:8888/v1.0.0.RC2/foo-master.properties
#foo-development.properties
curl localhost:8888/foo-development.properties
#foo-db.properties
curl localhost:8888/foo-db.properties
#foo-development-db.properties
curl localhost:8888/foo-development-db.properties

4、看一下自带的例子
spring-cloud-config-sample/src/main/java/sample/Application.java


package sample;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.core.env.Environment;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

@RestController
@SpringBootApplication
public class Application {

	@Autowired
	private Environment environment;

	@Value("${spring.application.name}")
	private String appName;
	
	@RequestMapping("/appName")
	public String appName() {
		return appName;
	}

	@RequestMapping("/")
	public String query(@RequestParam("q") String q) {
		return environment.getProperty(q);
	}

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

}

5、测试一下例子

cd spring-cloud-config-sample
mvn spring-boot:run

6、看一下输出信息

Mapping servlet: 'dispatcherServlet' to [/]
Mapping filter: 'metricsFilter' to: [/*]
Mapping filter: 'characterEncodingFilter' to: [/*]
Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
Mapping filter: 'httpPutFormContentFilter' to: [/*]
Mapping filter: 'requestContextFilter' to: [/*]
Mapping filter: 'webRequestLoggingFilter' to: [/*]
Mapping filter: 'applicationContextIdFilter' to: [/*]
Mapping : Mapped "{[/]}" onto public java.lang.String sample.Application.query(java.lang.String)
Mapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
Mapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
Mapping  : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
Mapping  : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
Mapping  : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
Mapping     : Mapped "{[/dump || /dump.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
Mapping     : Mapped "{[/auditevents || /auditevents.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public org.springframework.http.ResponseEntity<?> org.springframework.boot.actuate.endpoint.mvc.AuditEventsMvcEndpoint.findByPrincipalAndAfterAndType(java.lang.String,java.util.Date,java.lang.String)
Mapping     : Mapped "{[/loggers/{name:.*}],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.LoggersMvcEndpoint.get(java.lang.String)
Mapping     : Mapped "{[/loggers/{name:.*}],methods=[POST],consumes=[application/vnd.spring-boot.actuator.v1+json || application/json],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.LoggersMvcEndpoint.set(java.lang.String,java.util.Map<java.lang.String, java.lang.String>)
Mapping     : Mapped "{[/loggers || /loggers.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
Mapping     : Mapped "{[/env],methods=[POST]}" onto public java.lang.Object org.springframework.cloud.context.environment.EnvironmentManagerMvcEndpoint.value(java.util.Map<java.lang.String, java.lang.String>)
Mapping     : Mapped "{[/env/reset],methods=[POST]}" onto public java.util.Map<java.lang.String, java.lang.Object> org.springframework.cloud.context.environment.EnvironmentManagerMvcEndpoint.reset()
Mapping     : Mapped "{[/pause || /pause.json],methods=[POST]}" onto public java.lang.Object org.springframework.cloud.endpoint.GenericPostableMvcEndpoint.invoke()
Mapping     : Mapped "{[/resume || /resume.json],methods=[POST]}" onto public java.lang.Object org.springframework.cloud.endpoint.GenericPostableMvcEndpoint.invoke()
Mapping     : Mapped "{[/beans || /beans.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
Mapping     : Mapped "{[/configprops || /configprops.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
Mapping     : Mapped "{[/features || /features.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
Mapping     : Mapped "{[/env/{name:.*}],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EnvironmentMvcEndpoint.value(java.lang.String)
Mapping     : Mapped "{[/env || /env.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
Mapping     : Mapped "{[/health || /health.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.HealthMvcEndpoint.invoke(javax.servlet.http.HttpServletRequest)
Mapping     : Mapped "{[/restart || /restart.json],methods=[POST]}" onto public java.lang.Object org.springframework.cloud.context.restart.RestartMvcEndpoint.invoke()
Mapping     : Mapped "{[/autoconfig || /autoconfig.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
Mapping     : Mapped "{[/heapdump || /heapdump.json],methods=[GET],produces=[application/octet-stream]}" onto public void org.springframework.boot.actuate.endpoint.mvc.HeapdumpMvcEndpoint.invoke(boolean,javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse) throws java.io.IOException,javax.servlet.ServletException
Mapping     : Mapped "{[/metrics/{name:.*}],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.MetricsMvcEndpoint.value(java.lang.String)
Mapping     : Mapped "{[/metrics || /metrics.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
Mapping     : Mapped "{[/mappings || /mappings.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
Mapping     : Mapped "{[/refresh || /refresh.json],methods=[POST]}" onto public java.lang.Object org.springframework.cloud.endpoint.GenericPostableMvcEndpoint.invoke()
Mapping     : Mapped "{[/info || /info.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()
Mapping     : Mapped "{[/trace || /trace.json],methods=[GET],produces=[application/vnd.spring-boot.actuator.v1+json || application/json]}" onto public java.lang.Object org.springframework.boot.actuate.endpoint.mvc.EndpointMvcAdapter.invoke()

7、测试一下

curl localhost:8080/?q=foo

8、是不是很简单，到自己的项目上试试吧

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