雪花id生成调整

core/src/main/java/com/wecloud/utils/SnowflakeUtil.java

 package com.wecloud.utils;
 
 import cn.hutool.core.lang.Snowflake;
-import com.wecloud.im.ws.utils.RedisUtils;
-import org.springframework.beans.factory.annotation.Autowired;
+import org.apache.commons.lang3.RandomUtils;
+import org.apache.commons.lang3.StringUtils;
+import org.apache.commons.lang3.SystemUtils;
 import org.springframework.stereotype.Component;
 
-import javax.annotation.PostConstruct;
+import java.net.Inet4Address;
+import java.net.UnknownHostException;
 
 /**
  * 雪花算法 获取id工具类
@@ -15,14 +17,11 @@ import javax.annotation.PostConstruct;
 @Component
 public class SnowflakeUtil {
 
-    private static SnowflakeUtil snowflakeUtil;
     /**
      * workerId, dataCenterId动态获取
      * 12位序列号部分，支持同一毫秒内同一个节点可以生成4096个ID,  在目前一段不用做成动态获取服务器ID
      */
     private static volatile Snowflake SNOWFLAKE = null;
-    @Autowired
-    private RedisUtils redisUtils;
 
     /**
      * 多线程中加synchronized 保证不会获取重复id
@@ -34,12 +33,7 @@ public class SnowflakeUtil {
         if (SNOWFLAKE == null) {
             synchronized (SnowflakeUtil.class) {
                 if (SNOWFLAKE == null) {
-                    //   workerId通过redis获取
-                    long workerId = snowflakeUtil.redisUtils.incr("workerId", 1);
-
-                    // redisUtils不需要用了,释放回收掉
-                    snowflakeUtil.redisUtils = null;
-                    SNOWFLAKE = new Snowflake(workerId, 1L);
+                    SNOWFLAKE = new Snowflake(SnowflakeUtil.getWorkId(), SnowflakeUtil.getDataCenterId());
                 }
             }
         }
@@ -47,11 +41,31 @@ public class SnowflakeUtil {
     }
 
     /**
-     * 静态方法里调用spring注入的方法
+     * workId通过本机ip计算获得
+     * @return
      */
-    @PostConstruct
-    public void init() {
-        snowflakeUtil = this;
-        snowflakeUtil.redisUtils = this.redisUtils;
+    private static Long getWorkId(){
+        try {
+            String hostAddress = Inet4Address.getLocalHost().getHostAddress();
+            int[] ints = StringUtils.toCodePoints(hostAddress);
+            int sums = 0;
+            for(int b : ints){
+                sums += b;
+            }
+            return (long)(sums % 32);
+        } catch (UnknownHostException e) {
+            // 如果获取失败，则使用随机数备用
+            return RandomUtils.nextLong(0,31);
+        }
     }
+
+    private static Long getDataCenterId(){
+        int[] ints = StringUtils.toCodePoints(SystemUtils.getHostName());
+        int sums = 0;
+        for (int i: ints) {
+            sums += i;
+        }
+        return (long)(sums % 32);
+    }
+
 }