• EUREKA Client 无法连接注册中心问题解决方案【连接被拒绝、不支持SSL协议消息、不能向任意已知的服务器发送请求】

    EUREKA Client 无法连接注册中心问题解决方案【连接被拒绝、不支持SSL协议消息、不能向任意已知的服务器发送请求】

    版本：HOXTON.SR8

    主要报错信息如下：

    1. //无法连接注册中心
    2. DiscoveryClient_CLIENT1/host.docker.internal:client1:8089 - registration failed Cannot execute request on any known server
    3.  
    4. com.netflix.discovery.DiscoveryClient    : DiscoveryClient_CLIENT1/host.docker.internal:client1:8089 - was unable to send heartbeat!
    5.  
    6. com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any known server
    7.  
    8. //使用了https协议
    9. Caused by: javax.net.ssl.SSLException: Unsupported or unrecognized SSL message

    我的方法也许不能帮你解决问题，但是一定能帮你排除掉一部分问题！

    解决方法如下：

            1. application.yml文件或者properties文件中的service-url替换为serviceUrl，default-zone替换为defaultZone，亲测有用，能解决一部分问题，重点检查拼写！！！

            2. 服务端关闭验证：

                    

    1. security: 
    2.     basic: 
    3.         enabled: false

            感觉没啥效果

            3. client端 fetch-registry未开启，在配置文件中把  eureka.client.fetch-registry设置为true，亲测有用，不过注册中心就别开这个配置了

            4. 使用了安全验证之后，服务端需要关闭CSRF验证，关闭方法在后面 

            5. 注册地址注意使用http协议而不要使用https协议，亲测有用，IDE有时候会自动帮你修改为https协议

            6. 服务端server.port端口就是你的注册中心注册服务的端口，如果你的server.port端口就是8761，那么你的注册地址中端口也是8761！

            7. 注册地址拼写错误，例如http://root:root@localhost:8761/eurake，看出了错误的地方了吗？注意 eurake 这个地方，正确的拼写是 eureka !一定要详细检查，我就是这个地方弄错了！

            8. application.yml 文件要放在resources文件夹中，注意检查，很多朋友都是这个问题

            9. server端的启动一定要在client端之前！！！ 

      

    附上我的配置,实在不行可以用我的试试：

    server端：application.yml

    1. server:
    2.   port: 8761
    3.   address: localhost
    4. spring:
    5.   security:
    6.     user:
    7.       name: root
    8.       password: root
    9. security:
    10.   basic:
    11.     enabled: false
    12. eureka:
    13.   instance:
    14.     hostname: localhost
    15.   client:
    16.     fetch-registry: false
    17.     register-with-eureka: false
    18.     serviceUrl:
    19.       defaultZone: http://root:root@localhost:8761/eureka

    server端pom.xml

    1. <?xml version="1.0" encoding="UTF-8"?>
    2.  
    3. <project xmlns="http://maven.apache.org/POM/4.0.0" 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>
    6.  
    7.     <groupId>org.example</groupId>
    8.     <artifactId>servicecenter1</artifactId>
    9.     <version>2.0.9-SNAPSHOT</version>
    10.  
    11.     <name>servicecenter1</name>
    12.     <!-- FIXME change it to the project's website -->
    13.     <url>http://www.example.com</url>
    14.  
    15.     <properties>
    16.         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    17.         <maven.compiler.source>1.8</maven.compiler.source>
    18.         <maven.compiler.target>1.8</maven.compiler.target>
    19.         <spring.cloud-version>Hoxton.SR8</spring.cloud-version>
    20.     </properties>
    21.     <parent>
    22.         <groupId>org.springframework.boot</groupId>
    23.         <artifactId>spring-boot-starter-parent</artifactId>
    24.         <version>2.3.4.RELEASE</version>
    25.         <relativePath/> <!-- lookup parent from repository -->
    26.     </parent>
    27.  
    28.     <dependencyManagement>
    29.         <dependencies>
    30.             <dependency>
    31.                 <groupId>org.springframework.cloud</groupId>
    32.                 <artifactId>spring-cloud-dependencies</artifactId>
    33.                 <version>${spring.cloud-version}</version>
    34.                 <type>pom</type>
    35.                 <scope>import</scope>
    36.             </dependency>
    37.         </dependencies>
    38.     </dependencyManagement>
    39.     <dependencies>
    40.         <dependency>
    41.             <groupId>org.springframework.cloud</groupId>
    42.             <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
    43.         </dependency>
    44.         <dependency>
    45.             <groupId>org.springframework.boot</groupId>
    46.             <artifactId>spring-boot-starter-security</artifactId>
    47.         </dependency>
    48.         <dependency>
    49.             <groupId>junit</groupId>
    50.             <artifactId>junit</artifactId>
    51.             <version>4.11</version>
    52.             <scope>test</scope>
    53.         </dependency>
    54.     </dependencies>
    55.  
    56.     <build>
    57.         <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
    58.             <plugins>
    59.                 <!-- clean lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle -->
    60.                 <plugin>
    61.                     <artifactId>maven-clean-plugin</artifactId>
    62.                     <version>3.1.0</version>
    63.                 </plugin>
    64.                 <!-- default lifecycle, jar packaging: see https://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging -->
    65.                 <plugin>
    66.                     <artifactId>maven-resources-plugin</artifactId>
    67.                     <version>3.0.2</version>
    68.                 </plugin>
    69.                 <plugin>
    70.                     <artifactId>maven-compiler-plugin</artifactId>
    71.                     <version>3.8.0</version>
    72.                 </plugin>
    73.                 <plugin>
    74.                     <artifactId>maven-surefire-plugin</artifactId>
    75.                     <version>2.22.1</version>
    76.                 </plugin>
    77.                 <plugin>
    78.                     <artifactId>maven-jar-plugin</artifactId>
    79.                     <version>3.0.2</version>
    80.                 </plugin>
    81.                 <plugin>
    82.                     <artifactId>maven-install-plugin</artifactId>
    83.                     <version>2.5.2</version>
    84.                 </plugin>
    85.                 <plugin>
    86.                     <artifactId>maven-deploy-plugin</artifactId>
    87.                     <version>2.8.2</version>
    88.                 </plugin>
    89.                 <!-- site lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#site_Lifecycle -->
    90.                 <plugin>
    91.                     <artifactId>maven-site-plugin</artifactId>
    92.                     <version>3.7.1</version>
    93.                 </plugin>
    94.                 <plugin>
    95.                     <artifactId>maven-project-info-reports-plugin</artifactId>
    96.                     <version>3.0.0</version>
    97.                 </plugin>
    98.             </plugins>
    99.         </pluginManagement>
    100.     </build>
    101. </project>

    server端关闭csrf验证:

    1. package org.example.securityfonfig;
    2.  
    3. import org.springframework.context.annotation.Configuration;
    4. import org.springframework.security.config.annotation.web.builders.HttpSecurity;
    5. import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
    6. import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
    7.  
    8. /**
    9.  * @author hello 师姐
    10.  */
    11. @EnableWebSecurity
    12. @Configuration
    13. public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
    14.     @Override
    15.     protected void configure(HttpSecurity http) throws Exception {
    16.         http.csrf().disable();
    17.         super.configure(http);
    18.     }
    19. }

    server端启动验证:

    1. package org.example;
    2.  
    3. import org.springframework.boot.SpringApplication;
    4. import org.springframework.boot.WebApplicationType;
    5. import org.springframework.boot.autoconfigure.SpringBootApplication;
    6. import org.springframework.boot.builder.SpringApplicationBuilder;
    7. import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
    8.  
    9. /**
    10.  * Hello world!
    11.  *
    12.  * @author 17715
    13.  */
    14. @SpringBootApplication
    15. @EnableEurekaServer
    16. public class App {
    17.  
    18.     public static void main(String[] args) {
    19.         new SpringApplicationBuilder(App.class).web(WebApplicationType.SERVLET).run(args);
    20.  
    21.     }
    22. }

    client端application.yml

    1. server:
    2.   port: 8089
    3. spring:
    4.   application:
    5.     name: client1
    6.   security:
    7.     user:
    8.       name: root
    9.       password: root
    10. eureka:
    11.   client:
    12.     serviceUrl:
    13.       defaultZone: http://root:root@localhost:8761/eureka
    14.     fetch-registry: true
    15.     register-with-eureka: true

    client 端 pom.xml:

    1. <?xml version="1.0" encoding="UTF-8"?>
    2.  
    3. <project xmlns="http://maven.apache.org/POM/4.0.0" 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>
    6.  
    7.     <groupId>org.example</groupId>
    8.     <artifactId>eurakeclient</artifactId>
    9.     <version>1.0-SNAPSHOT</version>
    10.  
    11.     <name>eurakeclient</name>
    12.     <!-- FIXME change it to the project's website -->
    13.     <url>http://www.example.com</url>
    14.  
    15.     <parent>
    16.         <groupId>org.springframework.boot</groupId>
    17.         <artifactId>spring-boot-starter-parent</artifactId>
    18.         <version>2.3.4.RELEASE</version>
    19.         <relativePath/> <!-- lookup parent from repository -->
    20.     </parent>
    21.     <properties>
    22.         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    23.         <maven.compiler.source>1.8</maven.compiler.source>
    24.         <maven.compiler.target>1.8</maven.compiler.target>
    25.         <spring.cloud-version>Hoxton.SR8</spring.cloud-version>
    26.     </properties>
    27.     <dependencyManagement>
    28.         <dependencies>
    29.             <dependency>
    30.                 <groupId>org.springframework.cloud</groupId>
    31.                 <artifactId>spring-cloud-dependencies</artifactId>
    32.                 <version>${spring.cloud-version}</version>
    33.                 <type>pom</type>
    34.                 <scope>import</scope>
    35.             </dependency>
    36.         </dependencies>
    37.     </dependencyManagement>
    38.     <dependencies>
    39.         <dependency>
    40.             <groupId>org.springframework.boot</groupId>
    41.             <artifactId>spring-boot-starter-web</artifactId>
    42.         </dependency>
    43.         <dependency>
    44.             <groupId>org.springframework.cloud</groupId>
    45.             <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
    46.         </dependency>
    47.         <dependency>
    48.             <groupId>org.springframework.boot</groupId>
    49.             <artifactId>spring-boot-starter-security</artifactId>
    50.         </dependency>
    51.  
    52.         <dependency>
    53.             <groupId>junit</groupId>
    54.             <artifactId>junit</artifactId>
    55.             <version>4.11</version>
    56.             <scope>test</scope>
    57.         </dependency>
    58.     </dependencies>
    59.  
    60.     <build>
    61.         <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
    62.             <plugins>
    63.                 <!-- clean lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle -->
    64.                 <plugin>
    65.                     <artifactId>maven-clean-plugin</artifactId>
    66.                     <version>3.1.0</version>
    67.                 </plugin>
    68.                 <!-- default lifecycle, jar packaging: see https://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging -->
    69.                 <plugin>
    70.                     <artifactId>maven-resources-plugin</artifactId>
    71.                     <version>3.0.2</version>
    72.                 </plugin>
    73.                 <plugin>
    74.                     <artifactId>maven-compiler-plugin</artifactId>
    75.                     <version>3.8.0</version>
    76.                 </plugin>
    77.                 <plugin>
    78.                     <artifactId>maven-surefire-plugin</artifactId>
    79.                     <version>2.22.1</version>
    80.                 </plugin>
    81.                 <plugin>
    82.                     <artifactId>maven-jar-plugin</artifactId>
    83.                     <version>3.0.2</version>
    84.                 </plugin>
    85.                 <plugin>
    86.                     <artifactId>maven-install-plugin</artifactId>
    87.                     <version>2.5.2</version>
    88.                 </plugin>
    89.                 <plugin>
    90.                     <artifactId>maven-deploy-plugin</artifactId>
    91.                     <version>2.8.2</version>
    92.                 </plugin>
    93.                 <!-- site lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#site_Lifecycle -->
    94.                 <plugin>
    95.                     <artifactId>maven-site-plugin</artifactId>
    96.                     <version>3.7.1</version>
    97.                 </plugin>
    98.                 <plugin>
    99.                     <artifactId>maven-project-info-reports-plugin</artifactId>
    100.                     <version>3.0.0</version>
    101.                 </plugin>
    102.             </plugins>
    103.         </pluginManagement>
    104.     </build>
    105. </project>

     client端启动文件:

    1. package org.example;
    2.  
    3. import org.springframework.boot.SpringApplication;
    4. import org.springframework.boot.autoconfigure.SpringBootApplication;
    5. import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
    6.  
    7. /**
    8.  * Hello world!
    9.  *
    10.  * @author 17715
    11.  */
    12. @SpringBootApplication
    13. @EnableEurekaClient
    14. public class App {
    15.     public static void main(String[] args) {
    16.         SpringApplication.run(App.class, args);
    17.     }
    18. }

    附上我的成功截图

     最后希望各位都能尽快跑起来

    https://blog.csdn.net/namefailed/article/details/119712101
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  • 原文地址：https://www.cnblogs.com/sunny3158/p/16636528.html
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