spring boot 2.x创建spring cloud eureka server

灰太狼 2023-06-22 06:20 94阅读 0赞

刚开始学习微服务，用的spring boot 2.x，但是添加的依赖用的是1.x的一直报错，今天终于弄好了，记录一下。

1、spring cloud版本

spring cloud的主版本号都是伦敦地铁站名字命名的。

  • SNAPSHOT：开发版，团队内部使用。
  • GA：内部开发到一定阶段，各个模块完成并全面测试后，核心功能可以使用，可以对外发行。
  • Mx：其中x代表数字。由于GA版还不是公开发行版，功能还未完善或存在bug，浴室就有了里程碑版，一个GA后，一般有多个里程碑版，每个里程碑都是对功能的优化和bug的修复。
  • RC：候选发布版本，该期间只对发现的等级高的bug进行修复。
  • SR：公开正式发布的版本。正式版一般也有多个版本，用来修复重大bug或优化。

我采用的版本是 Greenwich.SR4 但是启动后一直报错，后来发现我用的spring boot版本是 2.2.x，查看spring官网发现应该用2.1.x
在这里插入图片描述

2、maven依赖

spring boot 2.x需要将下边的依赖

  1. <dependency>
  2.     <groupId>org.springframework.cloud</groupId>
  3.     <artifactId>spring-cloud-netflix-eureka-server</artifactId>
  4.     <version>2.1.4.RELEASE</version>
  5.     <scope>compile</scope>
  6. </dependency>

替换为

  1. <dependency>
  2.     <groupId>org.springframework.cloud</groupId>
  3.     <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
  4. </dependency>

下面贴一个完整的pom

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0"
  3.          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  4.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  5.     <modelVersion>4.0.0</modelVersion>
  7.     <parent>
  8.         <groupId>org.springframework.boot</groupId>
  9.         <artifactId>spring-boot-starter-parent</artifactId>
  10.         <version>2.1.10.RELEASE</version>
  11.         <relativePath/> <!-- lookup parent from repository -->
  12.     </parent>
  14.     <groupId>com.eureka_test</groupId>
  15.     <artifactId>eureka_test</artifactId>
  16.     <packaging>pom</packaging>
  17.     <version>1.0.0</version>
  19.     <dependencyManagement>
  20.         <dependencies>
  21.             <dependency>
  22.                 <groupId>org.springframework.cloud</groupId>
  23.                 <artifactId>spring-cloud-dependencies</artifactId>
  24.                 <version>Greenwich.SR4</version>
  25.                 <type>pom</type>
  26.                 <scope>import</scope>
  27.             </dependency>
  28.         </dependencies>
  29.     </dependencyManagement>
  31.     <dependencies>
  32.         <dependency>
  33.             <groupId>org.springframework.cloud</groupId>
  34.             <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
  35.         </dependency>
  36.         <dependency>
  37.             <groupId>org.springframework.boot</groupId>
  38.             <artifactId>spring-boot-starter-test</artifactId>
  39.             <scope>test</scope>
  40.         </dependency>
  41.     </dependencies>
  43.     <build>
  44.         <plugins>
  45.             <plugin>
  46.                 <groupId>org.springframework.boot</groupId>
  47.                 <artifactId>spring-boot-maven-plugin</artifactId>
  48.             </plugin>
  49.         </plugins>
  50.     </build>
  52. </project>

3、启动类

  1. @SpringBootApplication
  2. @EnableEurekaServer
  3. public class EurekaServerApplication {
  5.     public static void main(String[] args) {
  6.         SpringApplication.run(EurekaServerApplication.class, args);
  7.     }
  9. }

4、配置文件

  1. spring.application.name=eureka-server
  2. server.port=8761
  4. #是否将自己注册到eureka-server,默认为true
  5. eureka.client.register-with-eureka=false
  6. #是否从eureka-server获取注册信息,默认为true
  7. eureka.client.fetch-registry=false

5、集成security

依赖

  1. <dependency>
  2.     <groupId>org.springframework.boot</groupId>
  3.     <artifactId>spring-boot-starter-security</artifactId>
  4. </dependency>

application.properties
添加

  1. spring.security.basic.enabled=true

配置文件

  1. package com.eureka.config;
  3. import org.springframework.boot.actuate.autoconfigure.security.servlet.EndpointRequest;
  4. import org.springframework.context.annotation.Configuration;
  5. import org.springframework.security.config.annotation.web.builders.HttpSecurity;
  6. import org.springframework.security.config.annotation.web.builders.WebSecurity;
  7. import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
  9. /** * security安全校验配置 * @author:JZ * @date:2019/12/15 */
  11. @Configuration
  12. public class WebSecurityConfig extends WebSecurityConfigurerAdapter { 
  14.     @Override
  15.     protected void configure(HttpSecurity http) throws Exception { 
  16.         // 开启认证
  17.         http.authorizeRequests().anyRequest().authenticated().and().httpBasic();
  18.         http.csrf().ignoringAntMatchers("/eureka/**");
  19.         super.configure(http);
  20.     }
  22.     /** 如果有swagger 并且想排除swagger的可以加入下面的代码 */
  23.     @Override
  24.     public void configure(WebSecurity web) throws Exception { 
  25.         web.ignoring().antMatchers("/swagger-ui.html")
  26.                 .antMatchers("/webjars/springfox-swagger-ui/**")
  27.                 .antMatchers("/swagger-resources/**")
  28.                 .antMatchers("/v2/api-docs");
  29.     }
  31. }

如果不添加配置文件，客户端将无法注册到注册中心，产生如下报错：

  1. javax.ws.rs.WebApplicationException: com.fasterxml.jackson.databind.exc.MismatchedInputException: Root name 'timestamp' does not match expected ('instance') for type [simple type, class com.netflix.appinfo.InstanceInfo]
  2.  at [Source: (com.sun.jersey.client.apache4.ApacheHttpClient4Handler$HttpClientResponseInputStream); line: 1, column: 2]
  3.     at com.netflix.discovery.provider.DiscoveryJerseyProvider.readFrom(DiscoveryJerseyProvider.java:110) ~[eureka-client-1.9.13.jar:1.9.13]
  4.     at com.sun.jersey.api.client.ClientResponse.getEntity(ClientResponse.java:634) ~[jersey-client-1.19.1.jar:1.19.1]
  5.     at com.sun.jersey.api.client.ClientResponse.getEntity(ClientResponse.java:586) ~[jersey-client-1.19.1.jar:1.19.1]
  6.     at com.netflix.discovery.shared.transport.jersey.AbstractJerseyEurekaHttpClient.sendHeartBeat(AbstractJerseyEurekaHttpClient.java:105) ~[eureka-client-1.9.13.jar:1.9.13]
  7.     at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$3.execute(EurekaHttpClientDecorator.java:92) [eureka-client-1.9.13.jar:1.9.13]
  8.     at com.netflix.discovery.shared.transport.decorator.MetricsCollectingEurekaHttpClient.execute(MetricsCollectingEurekaHttpClient.java:73) ~[eureka-client-1.9.13.jar:1.9.13]
  9.     at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89) [eureka-client-1.9.13.jar:1.9.13]
  10.     at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$3.execute(EurekaHttpClientDecorator.java:92) [eureka-client-1.9.13.jar:1.9.13]
  11.     at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.executeOnNewServer(RedirectingEurekaHttpClient.java:118) ~[eureka-client-1.9.13.jar:1.9.13]
  12.     at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.execute(RedirectingEurekaHttpClient.java:79) ~[eureka-client-1.9.13.jar:1.9.13]
  13.     at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89) [eureka-client-1.9.13.jar:1.9.13]
  14.     at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$3.execute(EurekaHttpClientDecorator.java:92) [eureka-client-1.9.13.jar:1.9.13]
  15.     at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:120) [eureka-client-1.9.13.jar:1.9.13]
  16.     at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89) [eureka-client-1.9.13.jar:1.9.13]
  17.     at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$3.execute(EurekaHttpClientDecorator.java:92) [eureka-client-1.9.13.jar:1.9.13]
  18.     at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) [eureka-client-1.9.13.jar:1.9.13]
  19.     at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89) [eureka-client-1.9.13.jar:1.9.13]
  20.     at com.netflix.discovery.DiscoveryClient.renew(DiscoveryClient.java:864) [eureka-client-1.9.13.jar:1.9.13]
  21.     at com.netflix.discovery.DiscoveryClient$HeartbeatThread.run(DiscoveryClient.java:1423) [eureka-client-1.9.13.jar:1.9.13]
  22.     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_181]
  23.     at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_181]
  24.     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_181]
  25.     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_181]
  26.     at java.lang.Thread.run(Thread.java:748) [na:1.8.0_181]
  27. Caused by: com.fasterxml.jackson.databind.exc.MismatchedInputException: Root name 'timestamp' does not match expected ('instance') for type [simple type, class com.netflix.appinfo.InstanceInfo]
  28.  at [Source: (com.sun.jersey.client.apache4.ApacheHttpClient4Handler$HttpClientResponseInputStream); line: 1, column: 2]
  29.     at com.fasterxml.jackson.databind.exc.MismatchedInputException.from(MismatchedInputException.java:59) ~[jackson-databind-2.9.10.1.jar:2.9.10.1]
  30.     at com.fasterxml.jackson.databind.DeserializationContext.reportInputMismatch(DeserializationContext.java:1356) ~[jackson-databind-2.9.10.1.jar:2.9.10.1]
  31.     at com.fasterxml.jackson.databind.ObjectReader._unwrapAndDeserialize(ObjectReader.java:1695) ~[jackson-databind-2.9.10.1.jar:2.9.10.1]
  32.     at com.fasterxml.jackson.databind.ObjectReader._bindAndClose(ObjectReader.java:1608) ~[jackson-databind-2.9.10.1.jar:2.9.10.1]
  33.     at com.fasterxml.jackson.databind.ObjectReader.readValue(ObjectReader.java:1188) ~[jackson-databind-2.9.10.1.jar:2.9.10.1]
  34.     at com.netflix.discovery.converters.EurekaJacksonCodec.readValue(EurekaJacksonCodec.java:213) ~[eureka-client-1.9.13.jar:1.9.13]
  35.     at com.netflix.discovery.converters.wrappers.CodecWrappers$LegacyJacksonJson.decode(CodecWrappers.java:314) ~[eureka-client-1.9.13.jar:1.9.13]
  36.     at com.netflix.discovery.provider.DiscoveryJerseyProvider.readFrom(DiscoveryJerseyProvider.java:103) ~[eureka-client-1.9.13.jar:1.9.13]
  37.     ... 23 common frames omitted
  39. 2020-03-19 20:12:59.937  WARN 9996 --- [tbeatExecutor-0] c.n.d.s.t.d.RetryableEurekaHttpClient    : Request execution failed with message: com.fasterxml.jackson.databind.exc.MismatchedInputException: Root name 'timestamp' does not match expected ('instance') for type [simple type, class com.netflix.appinfo.InstanceInfo]
  40.  at [Source: (com.sun.jersey.client.apache4.ApacheHttpClient4Handler$HttpClientResponseInputStream); line: 1, column: 2]
  41. 2020-03-19 20:12:59.937 ERROR 9996 --- [tbeatExecutor-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_JZ-SHOP-ORDER/PCOS-Win10.mshome.net:jz-shop-order:8081 - was unable to send heartbeat!
  43. com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server
  44.     at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:112) ~[eureka-client-1.9.13.jar:1.9.13]
  45.     at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89) ~[eureka-client-1.9.13.jar:1.9.13]
  46.     at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$3.execute(EurekaHttpClientDecorator.java:92) ~[eureka-client-1.9.13.jar:1.9.13]
  47.     at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) ~[eureka-client-1.9.13.jar:1.9.13]
  48.     at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89) ~[eureka-client-1.9.13.jar:1.9.13]
  49.     at com.netflix.discovery.DiscoveryClient.renew(DiscoveryClient.java:864) ~[eureka-client-1.9.13.jar:1.9.13]
  50.     at com.netflix.discovery.DiscoveryClient$HeartbeatThread.run(DiscoveryClient.java:1423) [eureka-client-1.9.13.jar:1.9.13]
  51.     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_181]
  52.     at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_181]
  53.     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_181]
  54.     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_181]
  55.     at java.lang.Thread.run(Thread.java:748) [na:1.8.0_181]

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