递归算法最后返回值问题

最新推荐文章于 2023-01-17 16:40:10 发布

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最新推荐文章于 2023-01-17 16:40:10 发布

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分类专栏： java

本文链接：https://blog.youkuaiyun.com/e_wsq/article/details/103540355

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public String set(byte[] val) throws Exception{
   Cluster cluster=getRandomMaster(writableCluster);
   SSDB ssdb=cluster.getMaster();
   System.out.println("set cluster.id:"+cluster.getId());
   String key=StringUtils.leftAppendZero(cluster.getId(),4)+ MD5Util.getMD5String(val);
   System.out.println("set key01:"+key);
   if(ssdb.isOpen()){
       ssdb.set(key, val);
   }else{
       set(val);//如果前面取出的不可用，则再回调重新选一个可写服务器
   }
   System.out.println("set key02:"+key);
   return key;
}

输出结果：

set cluster.id:3
set key01:0003637c62818f5f42f73fdd4c214eaafad6
set cluster.id:4
set key01:0004637c62818f5f42f73fdd4c214eaafad6
set cluster.id:2
set key01:0002637c62818f5f42f73fdd4c214eaafad6
set key02:0002637c62818f5f42f73fdd4c214eaafad6
set key02:0004637c62818f5f42f73fdd4c214eaafad6
set key02:0003637c62818f5f42f73fdd4c214eaafad6
最终返回:0003637c62818f5f42f73fdd4c214eaafad6

public String set(byte[] val) throws Exception{
   Cluster cluster=getRandomMaster(writableCluster);
   SSDB ssdb=cluster.getMaster();
   System.out.println("set cluster.id:"+cluster.getId());
   String key=StringUtils.leftAppendZero(cluster.getId(),4)+ MD5Util.getMD5String(val);
   System.out.println("set key01:"+key);
   if(ssdb.isOpen()){
       ssdb.set(key, val);
   }else{
       key = set(val);//如果前面取出的不可用，则再回调重新选一个可写服务器
   }
   System.out.println("set key02:"+key);
   return key;
}

输出结果：
set cluster.id:3
set key01:0003637c62818f5f42f73fdd4c214eaafad6
set cluster.id:4
set key01:0004637c62818f5f42f73fdd4c214eaafad6
set cluster.id:2
set key01:0002637c62818f5f42f73fdd4c214eaafad6
set key02:0002637c62818f5f42f73fdd4c214eaafad6
set key02:0002637c62818f5f42f73fdd4c214eaafad6
set key02:0002637c62818f5f42f73fdd4c214eaafad6

最终返回:0002637c62818f5f42f73fdd4c214eaafad6