web项目 获取nacos配置java 代码

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1.主动监听nacos配置类import com.alibaba.cloud.nacos.NacosConfigManager; import com.alibaba.nacos.api.config.ConfigService; import com.alibaba.nacos.api.config.listener.Listener; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.InitializingBean; import org.springframework.beans.factory.annotation.Autowired;   import java.util.concurrent.Executor; import java.util.concurrent.LinkedBlockingDeque; import java.util.concurrent.ThreadPoolExecutor; import java.util.concurrent.TimeUnit;   /**  * 主动监听nacos配置类  *  * @param <T>  */ public abstract class NacosAbstractListener<T> implements InitializingBean, Listener {       protected final Logger logger = LoggerFactory.getLogger(getClass());       protected final String clazzSimpleName = getClass().getSimpleName();       @Autowired     private NacosConfigManager nacosConfigManager;       protected T data;       public T getData() {         return data;     }       private static ThreadPoolExecutor threadPoolExecutor = new ThreadPoolExecutor(             2, 4, 1, TimeUnit.SECONDS, new LinkedBlockingDeque<>(100),             new ThreadPoolExecutor.CallerRunsPolicy()     );       /**      * 监听-工作线程池      *      * @return      */     @Override     public Executor getExecutor() {         return threadPoolExecutor;     }       /**      * 接受到Nacos 具体 配置信息变动      *      * @param configInfo      */     @Override     public void receiveConfigInfo(String configInfo) {         logger.info("{}#receiveConfigInfo receive configInfo. configInfo={}", clazzSimpleName, configInfo);         compile(configInfo);     }       @Override     public void afterPropertiesSet() throws Exception {         ConfigService configService = nacosConfigManager.getConfigService();         logger.info("configService : {}", configService);         String configInfo = configService.getConfig(getDataId(), getGroupId(), getTimeout());         logger.info("{}#afterPropertiesSet init configInfo. configInfo={}", clazzSimpleName, configInfo);         compile(configInfo);         configService.addListener(getDataId(), getGroupId(), this);     }       /**      * 获取nacos dataId      *      * @return nacos dataId      */     protected abstract String getDataId();       /**      * 获取nacos groupId      *      * @return nacos groupId      */     protected String getGroupId() {         return "DEFAULT_GROUP";     }       /**      * 获取nacos 超时时间      *      * @return nacos 超时时间      */     protected long getTimeout() {         return 3000L;     }       /**      * 将输入转为数据      *      * @param dataStr      */     protected abstract void compile(String dataStr);   }

　　2.获取值

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mport cn.hutool.core.collection.CollectionUtil; import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.TypeReference; import com.casc.dcs.xbom.common.entity.vo.workshop.ExtWorkshopConfigVO; import com.casc.dcs.xbom.core.util.ExceptionUtil; import org.springframework.stereotype.Component;   import java.util.ArrayList; import java.util.List;   @Component public class NacosWorkshopConfigJsonListener extends NacosAbstractListener<List<ExtWorkshopConfigVO>> {       @Override     protected String getDataId() {         return "workshop-config";     }       /**      * 获取nacos groupId      *      * @return nacos groupId      */     @Override     protected String getGroupId() {         return "BUSINESS_GROUP";     }       @Override     protected void compile(String dataStr) {         data = JSON.parseObject(dataStr, new TypeReference<ArrayList<ExtWorkshopConfigVO>>(){});     }       public List<ExtWorkshopConfigVO> getConfig() {         List<ExtWorkshopConfigVO> workshopList = getData();         if (CollectionUtil.isEmpty(workshopList)) {             ExceptionUtil.newDxBusinessUnknowException("请确认配置中心workshop-config");         }         return workshopList;     }   }

　　3.创建实体

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import lombok.Data; import lombok.ToString;   @Data @ToString(callSuper = true) public class ExtWorkshopConfigVO {       private String orgCode;  //组织代码       private String orgName; //组织名称     }

　　4.yml文件workshop-config.yml

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[     {         "orgCode": "T01_01",         "orgName": "T01"     },     {         "orgCode": "T02_01",         "orgName": "T02"     },      {         "orgCode": "T03_01",         "orgName": "T03"     },      {         "orgCode": "T04_01",         "orgName": "T04"     },      {         "orgCode": "T05_01",         "orgName": "T05"     },      {         "orgCode": "T06_01",         "orgName": "T06"     },      {         "orgCode": "T07_01",         "orgName": "T07"     },      {         "orgCode": "T08_01",         "orgName": "T08"     }       ]

　　5.其他地方使用

List<ExtWorkshopConfigVO> config = nacosWorkshopConfigJsonListener.getConfig();