springmvc 接入 nacos 注册中心

朴灿烈づ我的快乐病毒、 2022-11-26 01:59 137阅读 0赞

1、引入依赖

<dependency>
        <groupId>com.alibaba.nacos</groupId>
        <artifactId>nacos-spring-context</artifactId>
        <version>0.3.6</version>
        <exclusions>
            <exclusion>
                <groupId>org.springframework</groupId>
                <artifactId>spring-context</artifactId>
            </exclusion>
            <exclusion>
                <artifactId>javax.annotation-api</artifactId>
                <groupId>javax.annotation</groupId>
            </exclusion>
        </exclusions>
    </dependency>

本例用的spring是4.3。所以排除了依赖中spring-context，默认是3.X。

jdk是1.7的。同时排除了javax.annotation，不然会报，jdk版本的错误。默认的版本需要1.8的支持。

<dependency>
        <artifactId>javax.annotation-api</artifactId>
        <groupId>javax.annotation</groupId>
        <version>1.2</version>
    </dependency>

<dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-core</artifactId>
        <version>2.12.1</version>
    </dependency>

2、注册

@Controller
    @EnableNacos(
            globalProperties =
            @NacosProperties(serverAddr = "192.168.1.115:8848", namespace = "92c06299-241c-4a84-ad62-cf61b6456d84")
    )
    public class NacosConfiguration {
    
            @Value("${nacos.group}")
            private String group;
    
            @Value("${server.port}")
            private int port;
    
            @NacosInjected
            private NamingService namingService;
    
            @NacosInjected(properties = @NacosProperties(encode = "UTF-8"))
            private NamingService namingServiceUTF8;
    
            @NacosInjected
            private ConfigService configService;
    
            @PostConstruct
            public void init() {
                    try {
                            InetAddress address = InetAddress.getLocalHost();
                            if (namingService != namingServiceUTF8) {
                                    throw new RuntimeException("Why?");
                            } else {
                                    namingService.registerInstance("mainsite", group, address.getHostAddress(), port);
                            }
                    } catch (UnknownHostException | NacosException e) {
                            e.printStackTrace();
                    }
    
            }
    
    }

3、总结

按照

[https://nacos.io/zh-cn/docs/quick-start-spring.html][https_nacos.io_zh-cn_docs_quick-start-spring.html]

提供的服务注册步骤处理。注册没问题，管理端可以查看到服务，但是过一会服务就消失了。怀疑是心跳的问题。

curl -X PUT 'http://127.0.0.1:8848/nacos/v1/ns/instance?serviceName=example&ip=127.0.0.1&port=8080'

然后只能通过 namingService.registerInstance("mainsite", group, address.getHostAddress(), port);

查看源代码，调用注册事列才能加入心跳

[https_nacos.io_zh-cn_docs_quick-start-spring.html]: https://nacos.io/zh-cn/docs/quick-start-spring.html