dubbo微服务

一.启动nacos和redis

1.虚拟机查看是否开启nacos和redis

docker ps

2.查看是否安装nacos和redis 

docker ps -a

 3.启动nacos和redis

docker start nacos
docker start redis-6379
docker ps

二.创建三个idea的maven项目

1.第一个项目dubboapidemo

2.1.1向pom.xml里添加依赖

<properties><java.version>1.8</java.version><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding><spring-boot.version>2.6.13</spring-boot.version><jwt.version>0.7.0</jwt.version><fastjson.version>1.2.60</fastjson.version><spring-cloud-alibaba.version>2.0.3.RELEASE</spring-cloud-alibaba.version><spring-cloud.version>Finchley.SR2</spring-cloud.version></properties><dependencies><dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>${fastjson.version}</version><scope>compile</scope></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>1.18.24</version><scope>compile</scope></dependency></dependencies><dependencyManagement><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-dependencies</artifactId><version>${spring-cloud.version}</version><type>pom</type><scope>import</scope></dependency><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-alibaba-dependencies</artifactId><version>${spring-cloud-alibaba.version}</version><type>pom</type><scope>import</scope></dependency></dependencies></dependencyManagement><!--2.添加当前项目所依赖的插件： --><build><plugins><!--1.添加tomcat插件 --><plugin><groupId>org.apache.tomcat.maven</groupId><artifactId>tomcat7-maven-plugin</artifactId><version>2.2</version><configuration><port>8080</port><path>/</path></configuration></plugin><!--2.添加Spring Boot 的打包插件 --><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><version>2.1.10.RELEASE</version><configuration><fork>true</fork></configuration></plugin></plugins></build>

2.1.2添加实体类Score

package com.jr.entry;import lombok.Data;
import java.io.Serializable;@Data
public class Score implements Serializable {private String name;private Double score;
}

 

2.1.3添加ScoreService接口

package com.jr.service;import com.jr.entry.Score;
import java.util.List;public interface ScoreService {List<Score> getinfo();}

2.1.4添加枚举ResultCode

package com.jr.util;
public enum ResultCode {SUCCESS(0, "请求成功"),ERROR(1, "请求失败"),;private int code;private String message;ResultCode(int code, String message) {this.code = code;this.message = message;}public int getCode() {return code;}public String getMessage() {return message;}
}

  2.1.5添加工具类Result

package com.jr.util;import lombok.Data;
import java.util.HashMap;
import java.util.Map;@Data
public class Result {private Integer code;private String message;private Map<String, Object> map = new HashMap<>();private Result() {}public static Result ok() {Result r = new Result();r.setCode(ResultCode.SUCCESS.getCode());r.setMessage(ResultCode.SUCCESS.getMessage());return r;}public static Result error() {Result r = new Result();r.setCode(ResultCode.ERROR.getCode());r.setMessage(ResultCode.ERROR.getMessage());return r;}public Result put(String key, Object value) {map.put(key, value);return this;}public Object get(String key) {return map.get(key);}
}

2.1.6把项目打包成jar包 

点开idea右边的maven

然后打开左边项目的target，下面就已经出现打包后的jar包了。

 2.第二个项目dubboconsumer

2.2.1添加依赖

<?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><groupId>com.jr</groupId><artifactId>dubboconsumer</artifactId><version>1.0-SNAPSHOT</version><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.0.7.RELEASE</version></parent><properties><java.version>1.8</java.version><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding><spring-boot.version>2.6.13</spring-boot.version><jwt.version>0.7.0</jwt.version><fastjson.version>1.2.60</fastjson.version><spring-cloud-alibaba.version>2.0.3.RELEASE</spring-cloud-alibaba.version><spring-cloud.version>Finchley.SR2</spring-cloud.version></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>compile</scope></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId></dependency><!--json--><dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>${fastjson.version}</version><scope>compile</scope></dependency><dependency><groupId>org.springframework.session</groupId><artifactId>spring-session-data-redis</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-redis</artifactId></dependency><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId></dependency><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId></dependency><!--引入api工程依赖 --><dependency><groupId>com.jr</groupId><artifactId>dubboapidemo</artifactId><version>1.0-SNAPSHOT</version></dependency><!--引入dubbo依赖 --><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-starter-dubbo</artifactId></dependency></dependencies><dependencyManagement><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-dependencies</artifactId><version>${spring-cloud.version}</version><type>pom</type><scope>import</scope></dependency><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-alibaba-dependencies</artifactId><version>${spring-cloud-alibaba.version}</version><type>pom</type><scope>import</scope></dependency></dependencies></dependencyManagement><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><configuration><classifier>exec</classifier></configuration></plugin></plugins></build></project>

 这里是第一个项目的信息，根据你的来，这里爆红可能是第一个项目没有进行打包操作。注意这两个项目的groupid一样才能这么互相导依赖。

2.2.2创建SessionConfig配置类

package com.jr.config;import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.session.web.http.CookieSerializer;
import org.springframework.session.web.http.DefaultCookieSerializer;@Configuration
public class SessionConfig {@Beanpublic CookieSerializer cookieSerializer() {DefaultCookieSerializer serializer = new DefaultCookieSerializer();serializer.setCookieName("JSESSIONID");serializer.setCookiePath("/");serializer.setDomainNamePattern("^.+?\\.(\\w+\\.[a-z]+)$");return serializer;}@Beanpublic RedisSerializer<Object> redisSerializer() {return new GenericJackson2JsonRedisSerializer();}
}

2.2.3创建实体类User

package com.jr.entry;import lombok.Data;
import org.springframework.stereotype.Component;import java.util.List;@Component
@Data
public class User {private String id;private String name;private String password;private List<Score> scoreList;
}

2.2.4创建UserService接口

package com.jr.service;import com.jr.entry.User;
import org.springframework.stereotype.Component;@Component
public interface UserService {public User getinfo();
}

2.2.5创建UserServiceImpl实现类

package com.jr.service.impl;import com.jr.entry.Score;
import com.jr.entry.User;
import com.jr.service.ScoreService;
import com.jr.service.UserService;
import org.apache.dubbo.config.annotation.Reference;
import org.springframework.stereotype.Service;import java.util.List;@Service
public class UserServiceImpl implements UserService {@Referenceprivate ScoreService scoreService;@Overridepublic User getinfo() {User user=new User();user.setId("111");user.setName("zhangsan");user.setPassword("zs123");List<Score> list=scoreService.getinfo();user.setScoreList(list);return user;}
}

2.2.6创建控制器UserController

package com.jr.controller;import com.jr.entry.User;
import com.jr.service.UserService;
import com.jr.util.Result;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;@RestController
@RequestMapping("/user")
public class UserController {@Autowiredprivate UserService userService;@GetMappingpublic Result getinfo(){User user = userService.getinfo();return Result.ok().put("data",user);}
}

 2.2.7创建启动类

package com.jr;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.session.data.redis.config.annotation.web.http.EnableRedisHttpSession;
@SpringBootApplication
@EnableRedisHttpSession
public class SpringBootMain {public static void main(String[] args) {SpringApplication.run(SpringBootMain.class,args);}
}

2.2.8创建application.properties配置文件

spring.application.name=dubbocon

 2.2.9创建application.yml配置文件

server:port: 111spring:session:store-type: redisdubbo:registry:address: nacos://192.168.130.39:8848cloud:subscribed-services: dubbopro   #是p工程的服务名consumer:check: false

 2.2.10创建bootstrap.yml配置文件

spring:cloud:nacos:discovery:server-addr: 192.168.130.39:8848config:server-addr: 192.168.130.39:8848file-extension: yamlnamespace: 8920c585-274d-477f-b55f-9324be8da9bdshared-configs:- data-id: dz14redisssesiton.yamlgroup: DEFAULT_GROUPinetutils:preferred-networks: 192.168.116

3.第三个项目dubboprovider

2.3.1向pom.xml添加依赖

<parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.0.7.RELEASE</version></parent><properties><java.version>1.8</java.version><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding><spring-boot.version>2.6.13</spring-boot.version><jwt.version>0.7.0</jwt.version><fastjson.version>1.2.60</fastjson.version><spring-cloud-alibaba.version>2.0.3.RELEASE</spring-cloud-alibaba.version><spring-cloud.version>Finchley.SR2</spring-cloud.version></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>compile</scope></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId></dependency><!--json--><dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>${fastjson.version}</version><scope>compile</scope></dependency><dependency><groupId>org.springframework.session</groupId><artifactId>spring-session-data-redis</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-redis</artifactId></dependency><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId></dependency><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId></dependency><!--引入api工程依赖 --><dependency><groupId>com.jr</groupId><artifactId>dubboapidemo</artifactId><version>1.0-SNAPSHOT</version></dependency><!--引入dubbo依赖 --><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-starter-dubbo</artifactId></dependency></dependencies><dependencyManagement><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-dependencies</artifactId><version>${spring-cloud.version}</version><type>pom</type><scope>import</scope></dependency><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-alibaba-dependencies</artifactId><version>${spring-cloud-alibaba.version}</version><type>pom</type><scope>import</scope></dependency></dependencies></dependencyManagement><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><configuration><classifier>exec</classifier></configuration></plugin></plugins></build>

2.3.2创建SessionConfig配置类

package com.jr.config;import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.session.web.http.CookieSerializer;
import org.springframework.session.web.http.DefaultCookieSerializer;@Configuration
public class SessionConfig {@Beanpublic CookieSerializer cookieSerializer() {DefaultCookieSerializer serializer = new DefaultCookieSerializer();serializer.setCookieName("JSESSIONID");serializer.setCookiePath("/");serializer.setDomainNamePattern("^.+?\\.(\\w+\\.[a-z]+)$");return serializer;}@Beanpublic RedisSerializer<Object> redisSerializer() {return new GenericJackson2JsonRedisSerializer();}
}

2.3.3创建ScoreServiceImpl接口实现类

@Service主键要用dubbo下面的，不能用Spring的注解

package com.jr.service.impl;import com.jr.entry.Score;
import com.jr.service.ScoreService;
import org.apache.dubbo.config.annotation.Service;import java.util.ArrayList;
import java.util.List;@Service
public class ScoreServiceImpl implements ScoreService {@Overridepublic List<Score> getinfo() {List<Score> list=new ArrayList<>();for(int i=0;i<3;i++){Score score=new Score();score.setName("admin");score.setScore(Math.random()*100);list.add(score);}return list;}
}

2.3.4创建启动类

package com.jr;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.session.data.redis.config.annotation.web.http.EnableRedisHttpSession;
import org.springframework.stereotype.Component;@SpringBootApplication
@EnableRedisHttpSession
@ComponentScan("com.jr.service")
public class SpringBootMain {public static void main(String[] args) {SpringApplication.run(SpringBootMain.class,args);}
}

2.3.5创建application.properties配置文件  

spring.application.name=dubbopro

2.3.6编写application.yml配置文件  

server:port: 222spring:session:store-type: redisdubbo:scan:base-packages: com.jr.service  #指定把哪一个包下面的Servlet交给dubbo去管理。protocol:name: dubboport: -1registry:address: nacos://192.168.130.39:8848cloud:subscribed-services: ""

2.3.7编写bootstrap.yml配置文件  

和第二个项目一样

spring:cloud:nacos:discovery:server-addr: 192.168.130.39:8848config:server-addr: 192.168.130.39:8848file-extension: yamlnamespace: 8920c585-274d-477f-b55f-9324be8da9bdshared-configs:- data-id: dz14redisssesiton.yamlgroup: DEFAULT_GROUPinetutils:preferred-networks: 192.168.116

三.同时启动项目，用postman工具进行测试

启动第二个项目和第三个项目。启动时，要先启动consumer工程，后启动provider工程，避免出现启动失败的错误。

启动完后，我们打开postman工具进行测试。

四. 自己的idea项目

1.第一个项目dubboapidemo

2.第二个项目dubboconsumer

3.第三个项目dubboprovider