spring boot 2.x创建spring cloud eureka server

灰太狼 2023-06-22 06:20 5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][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2tfeW91bmcxOTk3_size_16_color_FFFFFF_t_70]

#### 2、maven依赖 ####

spring boot 2.x需要将下边的依赖

<dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-netflix-eureka-server</artifactId>
        <version>2.1.4.RELEASE</version>
        <scope>compile</scope>
    </dependency>

替换为

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

下面贴一个完整的pom

<?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>
    
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.1.10.RELEASE</version>
            <relativePath/> 
        </parent>
    
        <groupId>com.eureka_test</groupId>
        <artifactId>eureka_test</artifactId>
        <packaging>pom</packaging>
        <version>1.0.0</version>
    
        <dependencyManagement>
            <dependencies>
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-dependencies</artifactId>
                    <version>Greenwich.SR4</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
            </dependencies>
        </dependencyManagement>
    
        <dependencies>
        	<dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>
        </dependencies>
    
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
            </plugins>
        </build>
    
    </project>

#### 3、启动类 ####

@SpringBootApplication
    @EnableEurekaServer
    public class EurekaServerApplication {
    
        public static void main(String[] args) {
            SpringApplication.run(EurekaServerApplication.class, args);
        }
    
    }

#### 4、配置文件 ####

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

#### 5、集成security ####

**依赖**

<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-security</artifactId>
    </dependency>

**application.properties**  
添加

spring.security.basic.enabled=true

**配置文件**

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

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：

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]
     at [Source: (com.sun.jersey.client.apache4.ApacheHttpClient4Handler$HttpClientResponseInputStream); line: 1, column: 2]
    	at com.netflix.discovery.provider.DiscoveryJerseyProvider.readFrom(DiscoveryJerseyProvider.java:110) ~[eureka-client-1.9.13.jar:1.9.13]
    	at com.sun.jersey.api.client.ClientResponse.getEntity(ClientResponse.java:634) ~[jersey-client-1.19.1.jar:1.19.1]
    	at com.sun.jersey.api.client.ClientResponse.getEntity(ClientResponse.java:586) ~[jersey-client-1.19.1.jar:1.19.1]
    	at com.netflix.discovery.shared.transport.jersey.AbstractJerseyEurekaHttpClient.sendHeartBeat(AbstractJerseyEurekaHttpClient.java:105) ~[eureka-client-1.9.13.jar:1.9.13]
    	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$3.execute(EurekaHttpClientDecorator.java:92) [eureka-client-1.9.13.jar:1.9.13]
    	at com.netflix.discovery.shared.transport.decorator.MetricsCollectingEurekaHttpClient.execute(MetricsCollectingEurekaHttpClient.java:73) ~[eureka-client-1.9.13.jar:1.9.13]
    	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89) [eureka-client-1.9.13.jar:1.9.13]
    	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$3.execute(EurekaHttpClientDecorator.java:92) [eureka-client-1.9.13.jar:1.9.13]
    	at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.executeOnNewServer(RedirectingEurekaHttpClient.java:118) ~[eureka-client-1.9.13.jar:1.9.13]
    	at com.netflix.discovery.shared.transport.decorator.RedirectingEurekaHttpClient.execute(RedirectingEurekaHttpClient.java:79) ~[eureka-client-1.9.13.jar:1.9.13]
    	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89) [eureka-client-1.9.13.jar:1.9.13]
    	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$3.execute(EurekaHttpClientDecorator.java:92) [eureka-client-1.9.13.jar:1.9.13]
    	at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:120) [eureka-client-1.9.13.jar:1.9.13]
    	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89) [eureka-client-1.9.13.jar:1.9.13]
    	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$3.execute(EurekaHttpClientDecorator.java:92) [eureka-client-1.9.13.jar:1.9.13]
    	at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) [eureka-client-1.9.13.jar:1.9.13]
    	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89) [eureka-client-1.9.13.jar:1.9.13]
    	at com.netflix.discovery.DiscoveryClient.renew(DiscoveryClient.java:864) [eureka-client-1.9.13.jar:1.9.13]
    	at com.netflix.discovery.DiscoveryClient$HeartbeatThread.run(DiscoveryClient.java:1423) [eureka-client-1.9.13.jar:1.9.13]
    	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_181]
    	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_181]
    	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_181]
    	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_181]
    	at java.lang.Thread.run(Thread.java:748) [na:1.8.0_181]
    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]
     at [Source: (com.sun.jersey.client.apache4.ApacheHttpClient4Handler$HttpClientResponseInputStream); line: 1, column: 2]
    	at com.fasterxml.jackson.databind.exc.MismatchedInputException.from(MismatchedInputException.java:59) ~[jackson-databind-2.9.10.1.jar:2.9.10.1]
    	at com.fasterxml.jackson.databind.DeserializationContext.reportInputMismatch(DeserializationContext.java:1356) ~[jackson-databind-2.9.10.1.jar:2.9.10.1]
    	at com.fasterxml.jackson.databind.ObjectReader._unwrapAndDeserialize(ObjectReader.java:1695) ~[jackson-databind-2.9.10.1.jar:2.9.10.1]
    	at com.fasterxml.jackson.databind.ObjectReader._bindAndClose(ObjectReader.java:1608) ~[jackson-databind-2.9.10.1.jar:2.9.10.1]
    	at com.fasterxml.jackson.databind.ObjectReader.readValue(ObjectReader.java:1188) ~[jackson-databind-2.9.10.1.jar:2.9.10.1]
    	at com.netflix.discovery.converters.EurekaJacksonCodec.readValue(EurekaJacksonCodec.java:213) ~[eureka-client-1.9.13.jar:1.9.13]
    	at com.netflix.discovery.converters.wrappers.CodecWrappers$LegacyJacksonJson.decode(CodecWrappers.java:314) ~[eureka-client-1.9.13.jar:1.9.13]
    	at com.netflix.discovery.provider.DiscoveryJerseyProvider.readFrom(DiscoveryJerseyProvider.java:103) ~[eureka-client-1.9.13.jar:1.9.13]
    	... 23 common frames omitted
    
    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]
     at [Source: (com.sun.jersey.client.apache4.ApacheHttpClient4Handler$HttpClientResponseInputStream); line: 1, column: 2]
    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!
    
    com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server
    	at com.netflix.discovery.shared.transport.decorator.RetryableEurekaHttpClient.execute(RetryableEurekaHttpClient.java:112) ~[eureka-client-1.9.13.jar:1.9.13]
    	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89) ~[eureka-client-1.9.13.jar:1.9.13]
    	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator$3.execute(EurekaHttpClientDecorator.java:92) ~[eureka-client-1.9.13.jar:1.9.13]
    	at com.netflix.discovery.shared.transport.decorator.SessionedEurekaHttpClient.execute(SessionedEurekaHttpClient.java:77) ~[eureka-client-1.9.13.jar:1.9.13]
    	at com.netflix.discovery.shared.transport.decorator.EurekaHttpClientDecorator.sendHeartBeat(EurekaHttpClientDecorator.java:89) ~[eureka-client-1.9.13.jar:1.9.13]
    	at com.netflix.discovery.DiscoveryClient.renew(DiscoveryClient.java:864) ~[eureka-client-1.9.13.jar:1.9.13]
    	at com.netflix.discovery.DiscoveryClient$HeartbeatThread.run(DiscoveryClient.java:1423) [eureka-client-1.9.13.jar:1.9.13]
    	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_181]
    	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_181]
    	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_181]
    	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_181]
    	at java.lang.Thread.run(Thread.java:748) [na:1.8.0_181]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2tfeW91bmcxOTk3_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20191214161007425.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2tfeW91bmcxOTk3,size_16,color_FFFFFF,t_70