Seata入门系列(2)-Spring Cloud 2020.0.1集成nacos+openfeign

深藏阁楼爱情的钟 2023-10-10 12:31 35阅读 0赞

### 版本说明 ###

<table> 
 <thead> 
  <tr> 
   <th>组件</th> 
   <th>版本</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>JDK</td> 
   <td>1.8</td> 
  </tr> 
  <tr> 
   <td>spring boot</td> 
   <td>2.4.1</td> 
  </tr> 
  <tr> 
   <td>spring cloud</td> 
   <td>2020.0.1</td> 
  </tr> 
  <tr> 
   <td>spring cloud alibaba</td> 
   <td>2.2.5.RELEASE</td> 
  </tr> 
  <tr> 
   <td>nacos</td> 
   <td>1.4.1</td> 
  </tr> 
  <tr> 
   <td>seata</td> 
   <td>1.4.0</td> 
  </tr> 
  <tr> 
   <td>mariadb</td> 
   <td>10.4.2</td> 
  </tr> 
  <tr> 
   <td>mybatis plus</td> 
   <td>3.4.2</td> 
  </tr> 
 </tbody> 
</table>

### 环境搭建 ###

1.  创建父工程seata-demo，删除src目录。  
    ![在这里插入图片描述][20210204111209991.png]
2.  创建子模块

<table> 
 <thead> 
  <tr> 
   <th>模块</th> 
   <th>说明</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>seata-service-account</td> 
   <td>账户</td> 
  </tr> 
  <tr> 
   <td>seata-service-order</td> 
   <td>订单</td> 
  </tr> 
  <tr> 
   <td>seata-service-storage</td> 
   <td>库存</td> 
  </tr> 
 </tbody> 
</table>

![在这里插入图片描述][20210204111254864.png]

1.  父pom添加相关依赖

<?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>org.example</groupId>
        <artifactId>seata-demo</artifactId>
        <packaging>pom</packaging>
        <version>1.0-SNAPSHOT</version>
        <modules>
            <module>seata-service-account</module>
            <module>seata-service-order</module>
            <module>seata-service-storage</module>
        </modules>
    
        <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>2.4.1</spring.boot.version>
            <spring.cloud.version>2020.0.1</spring.cloud.version>
            <spring.cloud.alibaba.version>2.2.5.RELEASE</spring.cloud.alibaba.version>
        </properties>
    
        <dependencyManagement>
            <dependencies>
                <dependency>
                    <groupId>com.alibaba.cloud</groupId>
                    <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                    <version>2.2.5.RELEASE</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
                <dependency>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-dependencies</artifactId>
                    <version>${spring.boot.version}</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-dependencies</artifactId>
                    <version>${spring.cloud.version}</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
            </dependencies>
        </dependencyManagement>
    
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-actuator</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
                
                <exclusions>
                    <exclusion>
                        <groupId>org.springframework.cloud</groupId>
                        <artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-openfeign</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-loadbalancer</artifactId>
            </dependency>
        </dependencies>
    
        <repositories>
            <repository>
                <id>aliyun-repos</id>
                <url>https://maven.aliyun.com/nexus/content/groups/public/</url>
                <snapshots>
                    <enabled>false</enabled>
                </snapshots>
            </repository>
        </repositories>
        <pluginRepositories>
            <pluginRepository>
                <id>aliyun-plugin</id>
                <url>https://maven.aliyun.com/nexus/content/groups/public/</url>
                <snapshots>
                    <enabled>false</enabled>
                </snapshots>
            </pluginRepository>
        </pluginRepositories>
    
        <build>
            <finalName>${project.name}</finalName>
            <resources>
                <resource>
                    <directory>src/main/resources</directory>
                </resource>
                <resource>
                    <directory>src/main/java</directory>
                    <includes>
                        <include>**/*.xml</include>
                    </includes>
                </resource>
            </resources>
            <pluginManagement>
                <plugins>
                    <plugin>
                        <groupId>org.springframework.boot</groupId>
                        <artifactId>spring-boot-maven-plugin</artifactId>
                        <version>${spring.boot.version}</version>
                        <configuration>
                            <fork>true</fork>
                            <finalName>${project.build.finalName}</finalName>
                        </configuration>
                        <executions>
                            <execution>
                                <goals>
                                    <goal>repackage</goal>
                                </goals>
                            </execution>
                        </executions>
                    </plugin>
                </plugins>
            </pluginManagement>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
                <plugin>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <version>3.8.1</version>
                    <configuration>
                        <source>${java.version}</source>
                        <target>${java.version}</target>
                        <encoding>UTF-8</encoding>
                        <compilerArgs>
                            <arg>-parameters</arg>
                        </compilerArgs>
                    </configuration>
                </plugin>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-antrun-plugin</artifactId>
                    <version>3.0.0</version>
                </plugin>
                <plugin>
                    <groupId>org.commonjava.maven.plugins</groupId>
                    <artifactId>directory-maven-plugin</artifactId>
                    <version>0.1</version>
                </plugin>
            </plugins>
        </build>
    </project>

1.  各个字模块添加启动类

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

1.  各个字模块添加配置文件，配置端口，服务名，就nacos地址

server:
      port: 10000
    spring:
      application:
        name: seata-service-account
      cloud:
        nacos:
          discovery:
            server-addr: 127.0.0.1:8848

1.  seata-service-account模块添加feign测试接口及controller类，通过feign调用order模块接口。

@FeignClient(name = "seata-service-order")
    public interface TestFeign {
        
        @GetMapping("/test")
        void test();
    }

@RestController
    public class TestController {
        
    
        @Autowired
        TestFeign testFeign;
        
        @GetMapping("/test")
        public void test() {
        
            testFeign.test();
        }
    }

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzNDM3ODc0_size_16_color_FFFFFF_t_70]

1.  seata-service-order添加一个测试controller,供account模块feign调用

@RestController
    public class TestController {
        
    
        @GetMapping("/test")
        public void test() {
        
            System.out.println("seata-service-order");
        }
    }

1.  启动各个服务，访问nacos  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzNDM3ODc0_size_16_color_FFFFFF_t_70 1]
2.  调用10000:/test接口，访问正常，搭建完成  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzNDM3ODc0_size_16_color_FFFFFF_t_70 2]

[20210204111209991.png]: https://img-blog.csdnimg.cn/20210204111209991.png
[20210204111254864.png]: https://img-blog.csdnimg.cn/20210204111254864.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzNDM3ODc0_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20210204112351473.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzNDM3ODc0,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzNDM3ODc0_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20210204115659561.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzNDM3ODc0,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzNDM3ODc0_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20210204115753311.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQzNDM3ODc0,size_16,color_FFFFFF,t_70