• 31.nacos集成Feign和Gateway实例（springcloud）

    一、项目nacos-client-a

     

    1.pom.xml文件

    新增了springcloud的依赖

    新增了springcloud的依赖管理

     新增了feign依赖

     

    1. "1.0" encoding="UTF-8"?>
    2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    3.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    4.     <modelVersion>4.0.0modelVersion>
    5.     <groupId>com.itgroupId>
    6.     <artifactId>nacos-client-aartifactId>
    7.     <version>0.0.1-SNAPSHOTversion>
    8.     <name>nacos-client-aname>
    9.     <description>Demo project for Spring Bootdescription>
    10.  
    11.     <properties>
    12.         <java.version>1.8java.version>
    13.         <project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
    14.         <project.reporting.outputEncoding>UTF-8project.reporting.outputEncoding>
    15.         <spring-boot.version>2.3.12.RELEASEspring-boot.version>
    16.         <spring-cloud.version>Hoxton.SR12spring-cloud.version>
    17.         <spring-cloud-alibaba.version>2.2.7.RELEASEspring-cloud-alibaba.version>
    18.     properties>
    19.  
    20.     <dependencies>
    21.         <dependency>
    22.             <groupId>org.springframework.bootgroupId>
    23.             <artifactId>spring-boot-starter-webartifactId>
    24.         dependency>
    25.         <dependency>
    26.             <groupId>com.alibaba.cloudgroupId>
    27.             <artifactId>spring-cloud-starter-alibaba-nacos-discoveryartifactId>
    28.         dependency>
    29.  
    30.         <dependency>
    31.             <groupId>org.springframework.cloudgroupId>
    32.             <artifactId>spring-cloud-starter-openfeignartifactId>
    33.         dependency>
    34.  
    35.         <dependency>
    36.             <groupId>org.springframework.bootgroupId>
    37.             <artifactId>spring-boot-starter-testartifactId>
    38.             <scope>testscope>
    39.             <exclusions>
    40.                 <exclusion>
    41.                     <groupId>org.junit.vintagegroupId>
    42.                     <artifactId>junit-vintage-engineartifactId>
    43.                 exclusion>
    44.             exclusions>
    45.         dependency>
    46.     dependencies>
    47.  
    48.     <dependencyManagement>
    49.         <dependencies>
    50.             <dependency>
    51.                 <groupId>org.springframework.bootgroupId>
    52.                 <artifactId>spring-boot-dependenciesartifactId>
    53.                 <version>${spring-boot.version}version>
    54.                 <type>pomtype>
    55.                 <scope>importscope>
    56.             dependency>
    57.             <dependency>
    58.                 <groupId>com.alibaba.cloudgroupId>
    59.                 <artifactId>spring-cloud-alibaba-dependenciesartifactId>
    60.                 <version>${spring-cloud-alibaba.version}version>
    61.                 <type>pomtype>
    62.                 <scope>importscope>
    63.             dependency>
    64.             <dependency>
    65.                 <groupId>org.springframework.cloudgroupId>
    66.                 <artifactId>spring-cloud-dependenciesartifactId>
    67.                 <version>${spring-cloud.version}version>
    68.                 <type>pomtype>
    69.                 <scope>importscope>
    70.             dependency>
    71.         dependencies>
    72.     dependencyManagement>
    73.  
    74.     <build>
    75.         <plugins>
    76.             <plugin>
    77.                 <groupId>org.apache.maven.pluginsgroupId>
    78.                 <artifactId>maven-compiler-pluginartifactId>
    79.                 <version>3.8.1version>
    80.                 <configuration>
    81.                     <source>1.8source>
    82.                     <target>1.8target>
    83.                     <encoding>UTF-8encoding>
    84.                 configuration>
    85.             plugin>
    86.             <plugin>
    87.                 <groupId>org.springframework.bootgroupId>
    88.                 <artifactId>spring-boot-maven-pluginartifactId>
    89.                 <version>2.3.7.RELEASEversion>
    90.                 <configuration>
    91.                     <mainClass>com.it.NacosClientAApplicationmainClass>
    92.                 configuration>
    93.                 <executions>
    94.                     <execution>
    95.                         <id>repackageid>
    96.                         <goals>
    97.                             <goal>repackagegoal>
    98.                         goals>
    99.                     execution>
    100.                 executions>
    101.             plugin>
    102.         plugins>
    103.     build>
    104.  
    105. project>

    2.application.yml

    3. feign目录下的TestFeign接口

     4.controller目录下的TestController

    1. package com.it.controller;
    2.  
    3. import com.it.feigin.TestFeign;
    4. import org.springframework.beans.factory.annotation.Autowired;
    5. import org.springframework.cloud.client.ServiceInstance;
    6. import org.springframework.cloud.client.discovery.DiscoveryClient;
    7. import org.springframework.web.bind.annotation.GetMapping;
    8. import org.springframework.web.bind.annotation.RestController;
    9.  
    10. import java.util.List;
    11. @RestController
    12. public class TestController {
    13.  
    14.     @Autowired
    15.     public DiscoveryClient discoveryClient;
    16.  
    17.     @Autowired
    18.     public TestFeign testFeign;
    19.  
    20.  
    21.  
    22.     @GetMapping("test")
    23.     public String test(){
    24.         List instances = discoveryClient.getInstances("nacos-client-b");
    25.         System.out.println(instances);
    26.         return testFeign.info();
    27.     }
    28.  
    29. }

    5.主函数启动类

    二、项目nacos-client-b

     

    1.pom.xml文件

    不需要额外添加springcloud的依赖，使用springcloudalibaba即可

    1. "1.0" encoding="UTF-8"?>
    2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    3.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    4.     <modelVersion>4.0.0modelVersion>
    5.     <groupId>com.itgroupId>
    6.     <artifactId>nacos-client-bartifactId>
    7.     <version>0.0.1-SNAPSHOTversion>
    8.     <name>nacos-client-bname>
    9.     <description>Demo project for Spring Bootdescription>
    10.  
    11.     <properties>
    12.         <java.version>1.8java.version>
    13.         <project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
    14.         <project.reporting.outputEncoding>UTF-8project.reporting.outputEncoding>
    15.         <spring-boot.version>2.3.12.RELEASEspring-boot.version>
    16.         <spring-cloud-alibaba.version>2.2.7.RELEASEspring-cloud-alibaba.version>
    17.     properties>
    18.  
    19.     <dependencies>
    20.         <dependency>
    21.             <groupId>org.springframework.bootgroupId>
    22.             <artifactId>spring-boot-starter-webartifactId>
    23.         dependency>
    24.         <dependency>
    25.             <groupId>com.alibaba.cloudgroupId>
    26.             <artifactId>spring-cloud-starter-alibaba-nacos-discoveryartifactId>
    27.         dependency>
    28.  
    29.         <dependency>
    30.             <groupId>org.springframework.bootgroupId>
    31.             <artifactId>spring-boot-starter-testartifactId>
    32.             <scope>testscope>
    33.             <exclusions>
    34.                 <exclusion>
    35.                     <groupId>org.junit.vintagegroupId>
    36.                     <artifactId>junit-vintage-engineartifactId>
    37.                 exclusion>
    38.             exclusions>
    39.         dependency>
    40.     dependencies>
    41.  
    42.     <dependencyManagement>
    43.         <dependencies>
    44.             <dependency>
    45.                 <groupId>org.springframework.bootgroupId>
    46.                 <artifactId>spring-boot-dependenciesartifactId>
    47.                 <version>${spring-boot.version}version>
    48.                 <type>pomtype>
    49.                 <scope>importscope>
    50.             dependency>
    51.             <dependency>
    52.                 <groupId>com.alibaba.cloudgroupId>
    53.                 <artifactId>spring-cloud-alibaba-dependenciesartifactId>
    54.                 <version>${spring-cloud-alibaba.version}version>
    55.                 <type>pomtype>
    56.                 <scope>importscope>
    57.             dependency>
    58.         dependencies>
    59.     dependencyManagement>
    60.  
    61.     <build>
    62.         <plugins>
    63.             <plugin>
    64.                 <groupId>org.apache.maven.pluginsgroupId>
    65.                 <artifactId>maven-compiler-pluginartifactId>
    66.                 <version>3.8.1version>
    67.                 <configuration>
    68.                     <source>1.8source>
    69.                     <target>1.8target>
    70.                     <encoding>UTF-8encoding>
    71.                 configuration>
    72.             plugin>
    73.             <plugin>
    74.                 <groupId>org.springframework.bootgroupId>
    75.                 <artifactId>spring-boot-maven-pluginartifactId>
    76.                 <version>2.3.7.RELEASEversion>
    77.                 <configuration>
    78.                     <mainClass>com.it.NacosClientBApplicationmainClass>
    79.                 configuration>
    80.                 <executions>
    81.                     <execution>
    82.                         <id>repackageid>
    83.                         <goals>
    84.                             <goal>repackagegoal>
    85.                         goals>
    86.                     execution>
    87.                 executions>
    88.             plugin>
    89.         plugins>
    90.     build>
    91.  
    92. project>

    2.application.yml

    3.BController

     4.主函数启动类

     

    分别启动项目一和项目二进行测试

    只有在同一个命名空间，同一个分组下的项目模块才能互相调用，测试其他情况均不能调用

     

    三、新建gateway模块

     1.pom.xml文件

    新增springcloud的依赖

    2.application.yml

    3.主函数启动类

    同时运行三个项目

    如果不运行动态路由模块，使用localhost/nacos-client-a会导致页面报错，无法正常访问

     同时启动三个项目

    再次访问该路径

     至此，nacos 做注册中心，服务发现，以及远程调用都完成了

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  • 原文地址：https://blog.csdn.net/weixin_59334478/article/details/127949382