Spring Cloud——構建服務消費者

構建服務消費者 springcloud-study-consumer-dept-80

pom文件配置

<?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">
    <parent>
        <artifactId>springcloud-study</artifactId>
        <groupId>com.sc.springcloud</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.sc.springcloud</groupId>
    <artifactId>springcloud-study-consumer-dept-80</artifactId>
    <version>1.0-SNAPSHOT</version>


    <dependencies>
        <!--引入自己定義的api通用包-->
        <dependency>
            <groupId>com.sc.springcloud</groupId>
            <artifactId>springcloud-study-api</artifactId>
            <version>${project.version}</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
        </dependency>

        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-core</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jetty</artifactId>
        </dependency>
        <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>
        </dependency>
        <!--熱部署 修改後立即生效-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>springloaded</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
        </dependency>
    </dependencies>

</project>

yml配置

server:
  port: 80

創建配置類，並註冊RestTemplate

@Configuration
public class ConfigBean {

    /**
     * 配置RestTemplate
     * 通過RestTemplate調用提供者服務 ，發送rest請求
     * 提供了多種訪問http服務的方法，
     * 針對於訪問rest服務<strong>客戶端</strong>的調用的模板類
     * @return
     */
    @Bean
    public  RestTemplate getRestTemplate(){
        return new RestTemplate();
    }

}

創建controller，用於對外提供接口，並調用提供者的controller，RestTemplate通信爲http模式，

@RestController
public class DeptConsumerController {

    private static final String REST_URL_PREFIX="http://localhost:8001";

    @Autowired
    private RestTemplate restTemplate;

    @RequestMapping(value = "/consumer/dept/add")
    public boolean add( DeptEntity deptEntity){
        //三個參數：url,requestMap ResponseBean.class
        return  restTemplate.postForObject(
                REST_URL_PREFIX+"/dept/add",
                deptEntity,
                Boolean.class);
    }

    @RequestMapping("/consumer/dept/findById/{deptNo}")
    public DeptEntity findById(Long deptNo){
        //三個參數：url,requestMap ResponseBean.class
        return  restTemplate.getForObject(
                REST_URL_PREFIX+"/dept/findById/"+deptNo,
                DeptEntity.class);
    }

    @RequestMapping("/consumer/dept/findAll")
    public List findAll(){
        //三個參數：url,requestMap ResponseBean.class
        return  restTemplate.getForObject(
                REST_URL_PREFIX+"/dept/findAll",
                List.class);
    }

    @RequestMapping(value = "/consumer/dept/discovery")
    public Object discovery(){
        return  restTemplate.getForObject(
                REST_URL_PREFIX+"/dept/discovery",
                Object.class);
    }
}

最後是啓動類

@SpringBootApplication
public class DeptConsumer80App {
    public static void main(String[] args) {
        SpringApplication.run(DeptConsumer80App.class,args);
    }
}

最後測試：

我們開啓提供者和消費者，他們是兩個不同的進程，由於是80端口所以可以省略，這樣我們就實現了兩個模塊之間的遠程調用