MongoDB集群JavaAPI插入数据

在完成了MongoDB集群的搭建工作之后，需要做的就是建立一个数据库，建立表，设置分片主键来初始化数据了！

在完成了MongoDB集群的搭建工作之后（见 ），需要做的就是建立一个数据库，建立表，设置分片主键来初始化数据了！

（1）建立WLB数据库，设置分表wlb_orders

 D:/mongodb-win32-i386-1.8.0/cmd>cd d:/mongodb-win32-i386-1.8.0/bin

D:/mongodb-win32-i386-1.8.0/bin>call mongo.exe 127.0.0.1:50000
MongoDB shell version: 1.8.0
connecting to: 127.0.0.1:50000/test
> use admin
switched to db admin
> printShardingStatus()
--- Sharding Status ---
  sharding version: { "_id" : 1, "version" : 3 }
  shards:
      {
        "_id" : "ShardSetA",
        "host" : "setA/127.0.0.1:10000,127.0.0.1:10001,127.0.0.1:10002"
}
      {
        "_id" : "ShardSetB",
        "host" : "setB/127.0.0.1:20000,127.0.0.1:20001,127.0.0.1:20002"
}
      {
        "_id" : "ShardSetC",
        "host" : "setC/127.0.0.1:30000,127.0.0.1:30001,127.0.0.1:30002"
}
  databases:
        { "_id" : "admin", "partitioned" : false, "primary" : "config" }

> use wlb //在wlb数据库不存在的情况下，，就会新建一个数据库
switched to db wlb
> db.createCollection('wlb_orders') //创建一个表wlb_orders
{ "ok" : 1 }
> use admin
switched to db admin
> db.runCommand({enablesharding:'wlb'}) //设置数据库可以分片
{ "ok" : 1 }
> db.runCommand({shardcollection:'wlb.wlb_orders',key:{order_id:1}})  //设置表的分区主键为order_id
{ "collectionsharded" : "wlb.wlb_orders", "ok" : 1 }
> db.printShardingStatus() //查询数据库分片信息
--- Sharding Status ---
  sharding version: { "_id" : 1, "version" : 3 }
  shards:
      {
        "_id" : "ShardSetA",
        "host" : "setA/127.0.0.1:10000,127.0.0.1:10001,127.0.0.1:10002"
}
      {
        "_id" : "ShardSetB",
        "host" : "setB/127.0.0.1:20000,127.0.0.1:20001,127.0.0.1:20002"
}
      {
        "_id" : "ShardSetC",
        "host" : "setC/127.0.0.1:30000,127.0.0.1:30001,127.0.0.1:30002"
}
  databases:
        { "_id" : "admin", "partitioned" : false, "primary" : "config" }
        { "_id" : "wlb", "partitioned" : true, "primary" : "ShardSetA" }
                wlb.wlb_orders chunks:
                                ShardSetA       1
                        { "order_id" : { $minKey : 1 } } -->> { "order_id" : { $maxKey : 1 } } on : ShardSetA { "t" : 1000, "i" : 0 }

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