三创建springCloud_client项目并访问注册服务

柔情只为你懂 2022-05-22 02:55 126阅读 0赞

1,创建项目springCloud\_client  
![这里写图片描述][70]

2,导入依赖

<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.shawemou.spring</groupId>
        <artifactId>springboot_getServer</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>1.5.4.RELEASE</version>
        </parent>
    
        
        <dependencyManagement>
            <dependencies>
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-dependencies</artifactId>
                    <version>Dalston.SR3</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>com.squareup.okhttp3</groupId>
                <artifactId>okhttp</artifactId>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-eureka-server</artifactId>
                <exclusions>
                    <exclusion>
                        <groupId>com.fasterxml.jackson.dataformat</groupId>
                        <artifactId>jackson-dataformat-xml</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>
    
            
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-ribbon</artifactId>
            </dependency>
    
            
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
            </dependency>
    
            
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-config</artifactId>
            </dependency>
    
        </dependencies>
    
        <build>
            <finalName>${project.artifactId}</finalName>
            <plugins>
                
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-resources-plugin</artifactId>
                    <configuration>
                        <encoding>UTF-8</encoding>
                    </configuration>
                </plugin>
                
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <configuration>
                        <source>1.8</source>
                        <target>1.8</target>
                        <encoding>UTF-8</encoding>
                    </configuration>
                </plugin>
            </plugins>
        </build>
    
    </project>

3,编写入口类ClientSpringApplication

@EnableDiscoveryClient //可以查找注册的服务
    @SpringBootApplication
    public class ClientSpringApplication { 
    
        public static void main(String[] args) {
            SpringApplication.run(ClientSpringApplication.class, args);
        }
    
        @Bean
        @LoadBalanced //使用rabbion的路由规则
        public RestTemplate getRestTemplate() {
            return new RestTemplate(new OkHttp3ClientHttpRequestFactory());
        }
    
    }

4,编写配置文件application.yml

server:
      port: 9090  #服务端口
    
    eureka:
      client:
        registerWithEureka: false  #是否将自己注册到Eureka服务中，默认为true
        fetchRegistry: true  #是否从Eureka中获取注册信息，默认为true
        serviceUrl:  #Eureka客户端与Eureka服务端进行交互的地址
          defaultZone: http://shawemou:shawemou@127.0.0.1:6868/eureka/

5,访问注册的服务  
注意:  
(1)restTemplate.getForObject参数必须是注册服务的id,不能指向  
(2)注册的服务中不能还有下划线 “\_”,否则找不到服务

@Service
    public class OrderService { 
        @Autowired
        private RestTemplate  restTemplate;
    
        public List<Order> getOrderList() {
            String serviceName = "springcloud_orderServer";
            List orderList1 = restTemplate.getForObject("http://"+serviceName+"/order/getOrderList", List.class);
            return orderList1;
        }
    }

6,后面会注册ConfigServer,所以这里还需要写一个bootstrap.yml

spring:         #最终指向的git中配置文件master分支下的:
                    # microservice-dev.yml或者microservice-dev.properties文件
      cloud:
        config:
          name: microservice #对应的配置服务中的应用名称 
          uri: http://127.0.0.1:6688/
          profile: dev #对应配置服务中的{profile}
          label: master #对应的分支

[70]: /images/20220522/ca251d86280d4a39a629fb041d599a87.png