spring-cloud-kubernetes学习(一) 编写第一个spring-cloud-kubernetes例子并在kubernetes中测试

在springcloud生态中，服务治理与注册中心等都有相应的组件。如eureka、hystrix，ribbon等。但是kubernetes组件也有服务发现、负载均衡的组件，我们可以借助于sping-cloud-kubernetes组件为我们提供的服务发现、负载均衡等来摈弃像eureka这样的注册中心。本文主要通过构建两个spring cloud 服务来演示spring-cloud-kubernetes组件如何做服务的发现，负载均衡等。

项目地址：https://gitee.com/quanwenz/micro-service-frame/repository/archive/first

一、首先搭建服务：
构建使用gradle,使用maven类似，只是引入方式稍微不同

1、使用gradle创建一个java工程
2、添加gradle.properties文件
这里从其他项目中拉过来的，可能有些冗余


nexusUrl=http://172.16.10.190:8081/repository/maven-public/
#nexusUrl=http://maven.aliyun.com/nexus/content/groups/public
aliyunUrl=http://maven.aliyun.com/nexus/content/groups/public
springUrl=https://repo.spring.io/libs-milestone/#java-version
javaVersion=1.8## dependency versions.
#springBootVersion=2.2.6.RELEASE
springBootVersion=2.3.5.RELEASE
#platformVersion=Cairo-SR7
platformVersion=Cairo-SR8
junitVersion=4.12
springCloudConfigVersion=2.0.0.RELEASE
lombokVersion=1.18.4#micro service versions
#openFeginVersion=2.2.5.RELEASE
#springCloudKubernetesVersion=1.1.7.RELEASE
springCloudVersion=Hoxton.SR9
#springCloudCommonsVersion=2.2.6.RELEASE
#springCloudNetflixRibbonVersion=2.2.6.RELEASE#common-redis-tools dependency versions
#jedisVersion=2.9.0
jedisVersion=3.3.0
jedis.version=${jedisVersion}
fastJsonVersion=1.2.59
lettuceCoreVersion=6.0.1.RELEASE#common-web-tools dependency versions
servletApiVersion=4.0.1
servletApi.version=${servletApiVersion}
jsoncodeVersion=1.2.4
yuicompressorVersion=2.4.8
jsonlibVersion=2.4:jdk15
orgJsonVersion=20190722
xomVersion=1.2.5
UserAgentUtilsVersion=1.20
jacksonVersion=2.9.8#common-tools dependency versions
htmlsuckerVersion=0.0.2
ostermillerVersion=1.07.00
commonLang3Version=3.8.1
dom4jVersion=1.6.1
poiVersion=3.17
poiOoxmlVersion=3.17
emojiJavaVersion=4.0.0
okioVersion=2.2.2
freemarkerVersion=2.3.28
bopomofo4jVersion=1.0.0
junrarVersion=4.0.0#common-rpc-tools
sofaVersion=5.7.6
grpcVersion=1.33.1
protocVersion=3.2.0
protocGenGrpcJavaVersion=1.4.0
libthriftVersion=0.13.0#org.apache.xmlbeans.version=2.3.0
commonsIoVersion=2.6
codecVersion=1.14
staxVersion=1.0.1
commonsBeanutilsVersion=1.9.3
itextAsianVersion=5.2.0
itextVersion=2.1.7
zxingCoreVersion=3.2.1
apacheAntVersion=1.7.1
ip2regionVersion=1.7
htoolVersion=4.1.15
cglibVersion=3.2.8
guavaVersion=20.0
pingyin4jVersion=2.5.1
itextpdfVersion=5.2.0
lowagieVersion=2.1.7
zxingVersion=3.2.1
antVersion=1.7.1#biz-base biz-mp dependency versions
#mybatisStaterVersion=1.3.2
#mysqlVersion=5.1.47
mysqlVersion=8.0.15
pagehelperVersion=1.2.5
druidVersion=1.1.16
okhttp.version=3.10.0
freemarker.version=2.3.28
caffeine.version=2.6.2
gson.version=2.8.5
jwtVersion=3.3.0
swaggerVersion=3.0.0
nettyVersion=4.1.26.Final
asciidoctorVersion=1.5.3
asciidoctorPDFVersion=1.5.0-alpha.10.1
swagger2markupDocVersion=1.3.3
userAgentUtilVersion=1.2.4
mybatis_plus_boot_starter_version=3.3.1.tmp
velocity_engine_core_version=2.0
jsoupVersion=1.11.3
logExpansionVersion=0.0.2.RELEASE
rsaEncryVersion=1.0.1.RELEASE
knife4jVersion=2.0.1
kaptchaVersion=2.3.2
screwCoreVersion=1.0.5#biz-jpa
javaxValidationVersion=2.0.1.Final#log-expansion
shadowVersion=5.0.0#javassist
javassistVersion=3.25.0-GAhostMachineIp=192.168.100.88
gradle_docker_version=1.2#common-k8s-tools
kubernetesClientVersion=4.6.1#springboot-admin
bootAdminVersion=2.2.2#rule-engine
aviatorVersion=4.2.9

3、创建三个模块

service-api、product-test-prop-service、consumer-test-prop-service

其中service-api定义Fegin的API
product-test-prop-service模拟一个提供者服务
consumer-test-prop-service模拟一个消费者服务

4、service-api中build.xml

apply plugin: 'java'dependencies {compile "org.springframework.cloud:spring-cloud-starter-openfeign"
//    compile group: 'javax.servlet', name: 'javax.servlet-api', version: "${servletApiVersion}"}

5、service-api中编写接口和降级处理

接口：

/*** 测试接口** @author zhuquanwen* @vesion 1.0* @date 2020/12/6 9:59* @since jdk1.8*/
@Component
@FeignClient(name="${feign.product-prop.name:product-test-service}",fallback = PropertyClientFallback.class)
public interface PropertyClient {@GetMapping(value="properties")List<String> getProperties();
}

上面的FeignClient注解中的name使用和后面kubernetes中对应service一样的名字

降级处理：

/***** @author zhuquanwen* @vesion 1.0* @date 2020/12/6 10:05* @since jdk1.8*/
@Component
public class PropertyClientFallback implements PropertyClient {@Overridepublic List<String> getProperties() {return new ArrayList<String>();}
}

6、product-test-prop-service中build.xml

注意引入了service-api模块

apply plugin: 'java'dependencies {compile project(":service-api")compile "org.springframework.boot:spring-boot-starter-web"compile "org.springframework.boot:spring-boot-starter-actuator"compile group: 'org.springframework.boot', name: 'spring-boot-starter-undertow'}

7、product-test-prop-service的接口实现

/***** @author zhuquanwen* @vesion 1.0* @date 2020/12/6 10:43* @since jdk1.8*/
@RestController
@RequestMapping
public class PropertyController  implements PropertyClient {@GetMapping("properties")public List<String> getProperties(){ArrayList<String> properties = new ArrayList<>();properties.add("properties1");properties.add("properties2");return properties;}}

8、product-test-prop-service的application.properties配置文件

server.port=8080

9、product-test-prop-service的启动类

/**** @author zhuquanwen* @vesion 1.0* @date 2020/12/6 11:12* @since jdk1.8*/
@SpringBootApplication
//@EnableFeignClients
public class Start {public static void main(String[] args) {SpringApplication.run(Start.class, args);}}

10、consumer-test-prop-service中build.xml

apply plugin: 'java'dependencies {compile project(":service-api")compile "org.springframework.cloud:spring-cloud-kubernetes-core"compile "org.springframework.cloud:spring-cloud-kubernetes-discovery"compile "org.springframework.cloud:spring-cloud-starter-kubernetes-ribbon"compile "org.springframework.cloud:spring-cloud-commons"compile "org.springframework.cloud:spring-cloud-starter-netflix-ribbon"compile "org.springframework.cloud:spring-cloud-starter-netflix-hystrix"compile "org.springframework.boot:spring-boot-starter-web"compile group: 'org.springframework.boot', name: 'spring-boot-starter-undertow'}

11、consumer-test-prop-service中调用类

/***** @author zhuquanwen* @vesion 1.0* @date 2020/12/6 11:00* @since jdk1.8*/
@RestController
@RequestMapping
public class ConsumerPropController {@Resourceprivate PropertyClient propertyClient;@GetMapping("properties")public List<String> getProductProperties(){return propertyClient.getProperties();}
}

12、consumer-test-prop-service中application.yml配置文件
其中KubernetesNamespace配置为后面使用的kubernetes的命名空间

server:port: 8080spring:application:name: consumer-test-prop-serviceproduct-test-prop-service:ribbon:KubernetesNamespace: defaultbackend:ribbon:eureka:enabled: falseclient:enabled: trueServerListRefreshInterval: 5000hystrix:command:BackendCall:execution:isolation:thread:timeoutInMilliseconds: 5000threadpool:BackendCallThread:coreSize: 5
feign:hystrix:enabled: true

13、consumer-test-prop-service中启动类

/**** @author zhuquanwen* @vesion 1.0* @date 2020/12/6 11:12* @since jdk1.8*/
@SpringBootApplication
@Configuration
@ServletComponentScan //自动扫描serletBean
@ComponentScan(basePackages = {"com.iscas"})
@EnableDiscoveryClient
@EnableFeignClients(basePackages = {"com.iscas"})
//@EnableFeignClients(basePackageClasses = {PropertyClient.class, PropertyClientFallback.class})public class Start {public static void main(String[] args) {SpringApplication springApplication = new SpringApplication(Start.class);springApplication.run(args);}}

OK,现在我们把项目搭建完了，启动两个启动类(注意端口一样的，可以把生产者的端口换一下)
访问http://localhost:8080/properties在浏览器返回了“[]”，没有返回“[“properties1”,“properties2”]”，这是因为没有运行在k8s中，没有服务发现，降级处理了。
控制台的报错也能证明

2020-12-06 16:08:09.876  WARN 5356 --- [-test-service-1] s.c.a.AnnotationConfigApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'ribbonLoadBalancingHttpClient' defined in org.springframework.cloud.netflix.ribbon.apache.HttpClientRibbonConfiguration: Unsatisfied dependency expressed through method 'ribbonLoadBalancingHttpClient' parameter 2; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'ribbonLoadBalancer' defined in org.springframework.cloud.netflix.ribbon.RibbonClientConfiguration: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.netflix.loadbalancer.ILoadBalancer]: Factory method 'ribbonLoadBalancer' threw exception; nested exception is io.fabric8.kubernetes.client.KubernetesClientException: Operation: [get]  for kind: [Endpoints]  with name: [product-test-service]  in namespace: [null]  failed.
2020-12-06 16:08:10.825  WARN 5356 --- [erListUpdater-0] c.n.l.PollingServerListUpdater           : Failed one update cycleio.fabric8.kubernetes.client.KubernetesClientException: Operation: [get]  for kind: [Endpoints]  with name: [product-test-service]  in namespace: [null]  failed.at io.fabric8.kubernetes.client.KubernetesClientException.launderThrowable(KubernetesClientException.java:64) ~[kubernetes-client-4.10.3.jar:na]at io.fabric8.kubernetes.client.KubernetesClientException.launderThrowable(KubernetesClientException.java:72) ~[kubernetes-client-4.10.3.jar:na]at io.fabric8.kubernetes.client.dsl.base.BaseOperation.getMandatory(BaseOperation.java:244) ~[kubernetes-client-4.10.3.jar:na]at io.fabric8.kubernetes.client.dsl.base.BaseOperation.get(BaseOperation.java:187) ~[kubernetes-client-4.10.3.jar:na]at io.fabric8.kubernetes.client.dsl.base.BaseOperation.get(BaseOperation.java:79) ~[kubernetes-client-4.10.3.jar:na]at org.springframework.cloud.kubernetes.ribbon.KubernetesEndpointsServerList.getUpdatedListOfServers(KubernetesEndpointsServerList.java:58) ~[spring-cloud-kubernetes-ribbon-1.1.7.RELEASE.jar:1.1.7.RELEASE]at com.netflix.loadbalancer.DynamicServerListLoadBalancer.updateListOfServers(DynamicServerListLoadBalancer.java:240) ~[ribbon-loadbalancer-2.3.0.jar:2.3.0]at com.netflix.loadbalancer.DynamicServerListLoadBalancer$1.doUpdate(DynamicServerListLoadBalancer.java:62) ~[ribbon-loadbalancer-2.3.0.jar:2.3.0]at com.netflix.loadbalancer.PollingServerListUpdater$1.run(PollingServerListUpdater.java:116) ~[ribbon-loadbalancer-2.3.0.jar:2.3.0]at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_144]at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) [na:1.8.0_144]at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) [na:1.8.0_144]at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) [na:1.8.0_144]at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_144]at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_144]at java.lang.Thread.run(Thread.java:748) [na:1.8.0_144]
Caused by: java.net.UnknownHostException: kubernetes.default.svcat java.net.InetAddress.getAllByName0(InetAddress.java:1280) ~[na:1.8.0_144]at java.net.InetAddress.getAllByName(InetAddress.java:1192) ~[na:1.8.0_144]at java.net.InetAddress.getAllByName(InetAddress.java:1126) ~[na:1.8.0_144]at okhttp3.Dns$1.lookup(Dns.java:40) ~[okhttp-3.10.0.jar:na]at okhttp3.internal.connection.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:185) ~[okhttp-3.10.0.jar:na]at okhttp3.internal.connection.RouteSelector.nextProxy(RouteSelector.java:149) ~[okhttp-3.10.0.jar:na]at okhttp3.internal.connection.RouteSelector.next(RouteSelector.java:84) ~[okhttp-3.10.0.jar:na]at okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:214) ~[okhttp-3.10.0.jar:na]at okhttp3.internal.connection.StreamAllocation.findHealthyConnection(StreamAllocation.java:135) ~[okhttp-3.10.0.jar:na]at okhttp3.internal.connection.StreamAllocation.newStream(StreamAllocation.java:114) ~[okhttp-3.10.0.jar:na]at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:42) ~[okhttp-3.10.0.jar:na]at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147) ~[okhttp-3.10.0.jar:na]at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121) ~[okhttp-3.10.0.jar:na]at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93) ~[okhttp-3.10.0.jar:na]at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147) ~[okhttp-3.10.0.jar:na]at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121) ~[okhttp-3.10.0.jar:na]at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93) ~[okhttp-3.10.0.jar:na]at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147) ~[okhttp-3.10.0.jar:na]at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:126) ~[okhttp-3.10.0.jar:na]at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147) ~[okhttp-3.10.0.jar:na]at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121) ~[okhttp-3.10.0.jar:na]at io.fabric8.kubernetes.client.utils.BackwardsCompatibilityInterceptor.intercept(BackwardsCompatibilityInterceptor.java:134) ~[kubernetes-client-4.10.3.jar:na]at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147) ~[okhttp-3.10.0.jar:na]at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121) ~[okhttp-3.10.0.jar:na]at io.fabric8.kubernetes.client.utils.ImpersonatorInterceptor.intercept(ImpersonatorInterceptor.java:68) ~[kubernetes-client-4.10.3.jar:na]at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147) ~[okhttp-3.10.0.jar:na]at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121) ~[okhttp-3.10.0.jar:na]at io.fabric8.kubernetes.client.utils.HttpClientUtils.lambda$createHttpClient$3(HttpClientUtils.java:149) ~[kubernetes-client-4.10.3.jar:na]at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147) ~[okhttp-3.10.0.jar:na]at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121) ~[okhttp-3.10.0.jar:na]at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:200) ~[okhttp-3.10.0.jar:na]at okhttp3.RealCall.execute(RealCall.java:77) ~[okhttp-3.10.0.jar:na]at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleResponse(OperationSupport.java:490) ~[kubernetes-client-4.10.3.jar:na]at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleResponse(OperationSupport.java:451) ~[kubernetes-client-4.10.3.jar:na]at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleGet(OperationSupport.java:416) ~[kubernetes-client-4.10.3.jar:na]at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleGet(OperationSupport.java:397) ~[kubernetes-client-4.10.3.jar:na]at io.fabric8.kubernetes.client.dsl.base.BaseOperation.handleGet(BaseOperation.java:890) ~[kubernetes-client-4.10.3.jar:na]at io.fabric8.kubernetes.client.dsl.base.BaseOperation.getMandatory(BaseOperation.java:233) ~[kubernetes-client-4.10.3.jar:na]... 13 common frames omitted

二、将两个服务运行在kubernetes中
现在我们将两个服务打包并在kubernetes集群中运行，kubernetes的搭建过程可参考前面的文章

1、gradle将两个服务打包，上传至安装了docker服务上
2、将两个jar包打成镜像
一个jar打完再打另一个
把jar包名改为app.jar
在jar包所在目录编写Dockerfile

FROM java:8-alpine
ADD app.jar app.jar
EXPOSE 8080
ENTRYPOINT ["java","-jar", "/app.jar"]

java:8-alpine 镜像可以从网上下载，多的很

运行两个命令将jar包

docker build -t 192.168.100.91:80/product-test:0.0.1 .

192.168.100.91:80是我本地镜像服务的地址
推送到docker镜像服务

docker push 192.168.100.91:80/product-test:0.0.1

接着再把消费者的jar也打好，名字我用的192.168.100.91:80/consumer-test:0.0.1

3、在kubernetes的default空间中创建一个用户，给以最高权限
master节点创建account.yaml

---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:name: test #ClusterRoleBinding的名字
subjects:- kind: ServiceAccountname: test #serviceaccount资源对象的namenamespace: default  #serviceaccount的namespace
roleRef:kind: ClusterRole name: cluster-admin #k8s集群中最高权限的角色apiGroup: rbac.authorization.k8s.io
---
apiVersion: v1
kind: ServiceAccount
metadata:name: test # ServiceAccount的名字namespace: default # serviceaccount的namespacelabels:app: test #ServiceAccount的标签

运行apply -f account.yaml

4、创建product-deployment.yaml
注意serviceAccountName要使用上面创建的test

---apiVersion: extensions/v1beta1kind: Deploymentmetadata:name: product-testspec:replicas: 2template:metadata:labels:app: webspec:containers:- name: product-test-instanceimage: 192.168.100.91:80/product-test:0.0.1ports:- containerPort: 8080serviceAccountName: test

kubectl apply -f product-deployment.yaml

5、创建product-service.yaml
注意这个serivice不使用Nodeport的方式向外发布

---
apiVersion: v1
kind: Service
metadata:name: product-test-servicelabels:name: product-test-service
spec:#type: NodePort      #这里代表是NodePort类型的ports:- port: 8080        #这里的端口和clusterIP对应，即ip:8080,供内部访问。targetPort: 8080  #端口一定要和container暴露出来的端口对应protocol: TCP# nodePort: 32143   # 所有的节点都会开放此端口，此端口供外部调用。selector:app: web          #这里选择器一定要选择容器的标签，之前写name:kube-node是错的。

kubectl apply -f product-service.yaml

6、创建consumer-deployments.yaml
注意serviceAccountName要使用上面创建的test

---apiVersion: extensions/v1beta1kind: Deploymentmetadata:name: consumer-testspec:replicas: 2template:metadata:labels:app: web-consumerspec:containers:- name: consumer-test-instanceimage: 192.168.100.91:80/consumer-test:0.0.1ports:- containerPort: 8080serviceAccountName: test

kubectl apply -f consumer-deployment.yaml

7、创建consumer-service.yaml
注意这个serivice使用Nodeport的方式向外发布,测试访问

---
apiVersion: v1
kind: Service
metadata:name: consumer-test-servicelabels:name: consumer-test-service
spec:type: NodePort      #这里代表是NodePort类型的ports:- port: 8080        #这里的端口和clusterIP对应，即ip:8080,供内部访问。targetPort: 8080  #端口一定要和container暴露出来的端口对应protocol: TCPnodePort: 32144   # 所有的节点都会开放此端口，此端口供外部调用。selector:app: web-consumer          #这里选择器一定要选择容器的标签，之前写name:kube-node是错的。

kubectl apply -f consumer-service.yaml

8、从浏览器访问http://[k8s一个Node的IP]:32144/properties
返回了“[“properties1”,“properties2”]”，证明调用成功了

三、spring cloud kubernetes调用过程
从网上找到调用过程图：

从上图可以看出product-infra-consumer在调用product-infra-service时，通过FeignClient组件拿到service name信息，最底层通过ok-http3，根据service name 调用 api server 获取该service下对应的Pod信息，拿到Pod信息后通过，轮询的方式向这些pod发送请求。spring-cloud-starter-kubernetes-ribbon组件中的KubernetesServerList 继承了 ribbon-loaderbanlancer组件中的AbstractServerList以及实现了 ServerList类中的方法，并通过 KubernetesClient提供的能力向k8s api server 发送请求信息。

spring-cloud-kubernetes学习(一) 编写第一个spring-cloud-kubernetes例子并在kubernetes中测试相关推荐

Spring学习笔记：第一个Spring Boot程序HelloWorld
Spring学习笔记:第一个Spring Boot程序HelloWorld 一.跟着 Spring 了解技术趋势 1.看看 Spring 5.x 的改变暗示了什么 2.Spring Boot 和 Sp ...
搭建Spring开发环境并编写第一个Spring小程序
一.前面,我写了一篇Spring框架的基础知识文章,里面没讲到如何配置Spring开发环境,今天就来讲一下,如果大家不知道怎么下载Spring软件包的话,可以看我那篇文章: http://blog.c ...
编写第一个Spring程序——IOC实现
第一个Spring程序 IOC范例 1.新建maven工程 2.在pom.xml文件中导入相关jar包 <!-- https://mvnrepository.com/artifact/org.s ...
Spring Boot-Spring Tool Suit + Gradle 构建第一个Spring Boot 项目02
概述将工程托管到Github Gradle构建为什么一个main函数就能启动web并提供这么多功能幕后的 Spring Boot 分发器和 multipart 配置视图解析器.静态资源以及区域 ...
【Spring 工厂】工厂设计模式、第一个Spring程序细节分析、整合日志框架
Spring 引言什么是 Spring? 工厂设计模式简单工厂的设计通用工厂的设计通用工厂的使用方式第一个 Spring 程序环境搭建 Spring 的核心API 程序开发细节分析 Sp ...
Spring基础专题——第一章（第一个Spring程序）
前言:去年到现在一直没有很好的时间完成这个spring基础+源码的博客目标,去年一年比较懒吧,所以今年我希望我的知识可以分享给正在奋斗中的互联网开发人员,以及未来想往架构师上走的道友们我们一起进步,从 ...
Spring Boot-Spring Tool Suit + Gradle 构建第一个Spring Boot 项目01
文章目录概述使用Spring Tool Suite构建Spring Boot项目下载STS 插件安装搭建第一个Spring Boot项目启动项目概述通常,构建一个Spring Boot项 ...
spring 3.x 学习笔记_spring mvc、spring jdbc 实现网站的登录注册功能
使用spring mvc.spring jdbc 实现网站的登录注册功能 1. 据业务模型创建model 一般实现序列化 2. 用spring 注解(@Repositor ...
Spring 源码学习一: 使用Gradle 构建Spring 源码环境
Gradle安装下载Gradle: https://gradle.org/releases/ 选择安装的版本: 6.x 以上选择版本后,点击下载. 配置环境变量: unzip gradle-6.8 ...

spring-cloud-kubernetes学习(一) 编写第一个spring-cloud-kubernetes例子并在kubernetes中测试

spring-cloud-kubernetes学习(一) 编写第一个spring-cloud-kubernetes例子并在kubernetes中测试相关推荐

最新文章

热门文章