{"id":29615,"date":"2022-11-10T05:30:14","date_gmt":"2023-10-05T07:20:49","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8java%e8%bf%9e%e6%8e%a5mongodb%e5%b9%b6%e8%bf%9b%e8%a1%8c%e8%ae%bf%e9%97%ae%ef%bc%88%e8%bf%9e%e6%8e%a5%e3%80%81%e6%90%9c%e7%b4%a2%e3%80%81%e6%8f%92%e5%85%a5%e3%80%81%e6%9b%b4%e6%96%b0\/"},"modified":"2025-08-12T15:00:46","modified_gmt":"2025-08-12T07:00:46","slug":"%e4%bd%bf%e7%94%a8java%e8%bf%9e%e6%8e%a5mongodb%e5%b9%b6%e8%bf%9b%e8%a1%8c%e8%ae%bf%e9%97%ae%ef%bc%88%e8%bf%9e%e6%8e%a5%e3%80%81%e6%90%9c%e7%b4%a2%e3%80%81%e6%8f%92%e5%85%a5%e3%80%81%e6%9b%b4%e6%96%b0","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8java%e8%bf%9e%e6%8e%a5mongodb%e5%b9%b6%e8%bf%9b%e8%a1%8c%e8%ae%bf%e9%97%ae%ef%bc%88%e8%bf%9e%e6%8e%a5%e3%80%81%e6%90%9c%e7%b4%a2%e3%80%81%e6%8f%92%e5%85%a5%e3%80%81%e6%9b%b4%e6%96%b0\/","title":{"rendered":"\u4f7f\u7528Java\u8fde\u63a5MongoDB\u5e76\u8fdb\u884c\u8bbf\u95ee\uff08\u8fde\u63a5\u3001\u641c\u7d22\u3001\u63d2\u5165\u3001\u66f4\u65b0\u3001\u5220\u9664\uff09"},"content":{"rendered":"

\u4ee5\u4e0b\u662f\u5173\u4e8e\u5982\u4f55\u4f7f\u7528Java MongoDB\u9a71\u52a8\u7a0b\u5e8f\u4eceJava\u8bbf\u95eeMongoDB\u7684\u65b9\u6cd5\u7684\u5907\u5fd8\u5f55\uff0c\u4e13\u4e3a\u5b8c\u5168\u521d\u5b66\u8005\u800c\u5199\u3002
\nMongoDB\u5177\u6709\u8bb8\u591a\u529f\u80fd\uff0c\u4f46\u672c\u6587\u53ea\u89e3\u91ca\u4e86\u4f7f\u7528Java MongoDB\u9a71\u52a8\u7a0b\u5e8f\u8fdb\u884c\u7b80\u5355CRUD\u64cd\u4f5c\u7684\u65b9\u6cd5\u3002<\/p>\n

MongoDB\u7684\u5185\u5bb9RDB\u4e0e\u4e4b\u4e0d\u540c\u7684\u672f\u8bed\u3002
\n\u5982\u679c\u4e0d\u77e5\u9053\u4efb\u4f55\u4e1c\u897f\u5c31\u9605\u8bfbJava MongoDB Driver\u7684\u6587\u6863\uff0c\u53ef\u80fd\u4f1a\u611f\u5230\u56f0\u60d1\uff0c\u6240\u4ee5\u81f3\u5c11\u5e94\u638c\u63e1RDB\u4e0e\u5176\u672f\u8bed\u7684\u533a\u522b\u3002<\/p>\n

RDB\u548cMongoDB\u6570\u636e\u5e93\u7ed3\u6784\u7684\u6bd4\u8f83\u5982\u4e0b\u3002<\/p>\n

\n
RDBMongoDB\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30c6\u30fc\u30d6\u30eb\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u30ec\u30b3\u30fc\u30c9\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u53e6\u5916\uff0c\u53ef\u4ee5\u5728\u4ee5\u4e0b\u7f51\u7ad9\u4e0a\u4e86\u89e3MongoDB\u7684\u7279\u70b9\u7b49\u4fe1\u606f\u3002<\/p>\n
    \n
  • \n
      Introduction to MongoDB \u2014 MongoDB Manual 2.6.3<\/ul>\n<\/li>\n<\/ul>\n

       <\/p>\n

        \n
      • \n
          \u89e6\u3063\u3066\u307f\u3088\u3046\uff01\u30d3\u30c3\u30b0\u30c7\u30fc\u30bf\u3092\u652f\u3048\u308b\u30af\u30e9\u30a6\u30c9\u6280\u8853 – MongoDB\u3092\u8a66\u3057\u3066\u307f\u3088\u3046\uff1aITpro<\/ul>\n<\/li>\n<\/ul>\n

           <\/p>\n

            MongoDB\u3067\u3086\u308b\u3075\u308fDB\u4f53\u9a13\uff1a\u9023\u8f09\uff5cgihyo.jp \u2026 \u6280\u8853\u8a55\u8ad6\u793e<\/ul>\n

            build.gradle\u6587\u4ef6\u7684\u914d\u7f6e\u5728build.gradle\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u914d\u7f6e<\/p>\n
            dependencies {\r\n...\r\n    compile group: 'org.mongodb', name:'mongo-java-driver', version:'2.12.3'\r\n...\r\n}\r\n<\/code><\/pre>\n
            \u672c\u6b21\u4f7f\u7528\u4e86Gradle\uff0c\u4f46\u5982\u679c\u60f3\u8981\u81ea\u884c\u89e3\u51b3\u4f9d\u8d56\u5173\u7cfb\uff0c\u53ef\u4ee5\u4eceMongoDB Drivers\u4e0b\u8f7d\u5408\u9002\u7684\u9a71\u52a8\u7a0b\u5e8f\u5e76\u5c06\u5176\u52a0\u5165\u5230\u8def\u5f84\u4e2d\u3002<\/p>\n
            \u4f7f\u7528Java\u8fde\u63a5\u5230MongoDB\u3002<\/p>\n
            \u4e0e\u670d\u52a1\u5668\u7684\u8fde\u63a5\u548c\u65ad\u5f00<\/p>\n
            \/\/ MongoDB\u30b5\u30fc\u30d0\u306b\u63a5\u7d9a<\/span>\r\nMongoClient<\/span> client<\/span> =<\/span> new<\/span> MongoClient<\/span>(<\/span>\"localhost\"<\/span>,<\/span> 27017<\/span>);<\/span>\r\n\/\/ \u5229\u7528\u3059\u308bDB\u3092\u53d6\u5f97<\/span>\r\nDB<\/span> db<\/span> =<\/span> mongoClient<\/span>.<\/span>getDB<\/span>(<\/span> \"mydb\"<\/span> );<\/span>\r\n\r\n...<\/span>\r\n\r\n\r\n\/\/ \u30b5\u30fc\u30d0\u304b\u3089\u5207\u65ad<\/span>\r\nclient<\/span>.<\/span>close<\/span>();<\/span>\r\n<\/code><\/pre>\n
              \n
            • \n
                new MongoClient()\u3067\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u30d7\u30fc\u30eb\u306e\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u30921\u3064\u3092\u3068\u3063\u3066\u304f\u308b\uff08\u3089\u3057\u3044\uff09<\/ul>\n<\/li>\n<\/ul>\n
                 <\/p>\n
                  \n
                • \n
                    \u30b9\u30ec\u30c3\u30c9\u30bb\u30fc\u30d5\u3067\u3001\u8907\u6570\u306e\u30b9\u30ec\u30c3\u30c9\u3067\u5171\u6709\u3067\u304d\u308b\u3088\u3046\u8a2d\u8a08\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u30011\u3064\u306e\u30a2\u30d7\u30ea\u30671\u3064\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3067OK\uff08\u3089\u3057\u3044\uff09<\/ul>\n<\/li>\n<\/ul>\n
                     <\/p>\n
                      getDB()\u3057\u305f\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304c\u306a\u3051\u308c\u3070\u52dd\u624b\u306b\u751f\u6210\u3055\u308c\u308b<\/ul>\n
                      \u8bf7\u53c2\u8003\u300aJava\u9a71\u52a8\u5165\u95e8\u300b\u4ee5\u83b7\u53d6\u66f4\u8be6\u7ec6\u4fe1\u606f\u3002<\/p>\n
                      \u786e\u8ba4\u8eab\u4efd\u5982\u679c\u4ee5\u5b89\u5168\u6a21\u5f0f\uff08\u6ce8\uff1aMongoDB\u624b\u518c2.6.3\u4e2d\u7684\u5b89\u5168\u6559\u7a0b\uff09\u542f\u52a8\uff0c\u5219\u9700\u8981\u8fdb\u884c\u8eab\u4efd\u9a8c\u8bc1\u3002<\/p>\n
                      MongoClient<\/span> mongoClient<\/span> =<\/span> new<\/span> MongoClient<\/span>();<\/span>\r\nDB<\/span> db<\/span> =<\/span> mongoClient<\/span>.<\/span>getDB<\/span>(<\/span>\"mydb\"<\/span>);<\/span>\r\nboolean<\/span> auth<\/span> =<\/span> db<\/span>.<\/span>authenticate<\/span>(<\/span>myUserName<\/span>,<\/span> myPassword<\/span>);<\/span>\r\n<\/code><\/pre>\n
                      \u83b7\u53d6\u6536\u85cf\u5217\u8868\u83b7\u53d6\u6570\u636e\u5e93\u4e2d\u96c6\u5408\u7684\u5217\u8868<\/p>\n
                      Set<\/span><<\/span>String<\/span>><\/span> colls<\/span> =<\/span> db<\/span>.<\/span>getCollectionNames<\/span>();<\/span>\r\n\r\nfor<\/span> (<\/span>String<\/span> s<\/span> :<\/span> colls<\/span>)<\/span> {<\/span>\r\n    System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>s<\/span>);<\/span>\r\n}<\/span>\r\n\r\n<\/code><\/pre>\n
                      \u83b7\u53d6\u6307\u5b9a\u7684\u96c6\u5408\u60a8\u53ef\u4ee5\u5bf9\u83b7\u5f97\u7684\u96c6\u5408\u6267\u884cCRUD\u7b49\u64cd\u4f5c\u3002<\/p>\n
                      DBCollection<\/span> coll<\/span> =<\/span> db<\/span>.<\/span>getCollection<\/span>(<\/span>\"testCollection\"<\/span>);<\/span>\r\n<\/code><\/pre>\n
                      \u63d2\u5165\u6587\u4ef6
                      \n\u5728\u5df2\u83b7\u53d6\u7684\u96c6\u5408\u4e2d\u63d2\u5165\u6587\u6863\u3002
                      \n\u82e5\u8981\u63d2\u5165\u4ee5\u4e0b\u7ed3\u6784\u7684\u6587\u6863\uff0c<\/p>\n
                      {<\/span>\r\n   \"name\"<\/span> :<\/span> \"MongoDB\"<\/span>,<\/span>\r\n   \"type\"<\/span> :<\/span> \"database\"<\/span>,<\/span>\r\n   \"count\"<\/span> :<\/span> 1<\/span>,<\/span>\r\n   \"info\"<\/span> :<\/span> {<\/span>\r\n               \"x\"<\/span> :<\/span> 203<\/span>,<\/span>\r\n               \"y\"<\/span> :<\/span> 102<\/span>\r\n             }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                      \u4ee5\u4e0b\u662fJava\u7684\u6e90\u4ee3\u7801\u3002<\/p>\n
                      BasicDBObject<\/span> doc<\/span> =<\/span> new<\/span> BasicDBObject<\/span>(<\/span>\"name\"<\/span>,<\/span> \"MongoDB\"<\/span>)<\/span>\r\n        .<\/span>append<\/span>(<\/span>\"type\"<\/span>,<\/span> \"database\"<\/span>)<\/span>\r\n        .<\/span>append<\/span>(<\/span>\"count\"<\/span>,<\/span> 1<\/span>)<\/span>\r\n        .<\/span>append<\/span>(<\/span>\"info\"<\/span>,<\/span> new<\/span> BasicDBObject<\/span>(<\/span>\"x\"<\/span>,<\/span> 203<\/span>).<\/span>append<\/span>(<\/span>\"y\"<\/span>,<\/span> 102<\/span>));<\/span>\r\ncoll<\/span>.<\/span>insert<\/span>(<\/span>doc<\/span>);<\/span>\r\n<\/code><\/pre>\n
                      \u4f7f\u7528BasicDBObject\u7c7b\u521b\u5efa\u6570\u636e\u7ed3\u6784\u3002
                      \n\u7136\u540e\u53ea\u9700\u8c03\u7528\u8981\u63d2\u5165\u7684\u96c6\u5408\u7684insert()\u65b9\u6cd5\u5373\u53ef\u3002
                      \n\u4f46\u662f\uff0c\u8bf4\u5b9e\u8bdd\u521b\u5efaDBObject\u975e\u5e38\u9ebb\u70e6\u3002\u3002<\/p>\n
                      \u8981\u4eceJSON\u5b57\u7b26\u4e32\u521b\u5efaDBObject\uff0c\u9700\u6309\u7167\u4ee5\u4e0b\u65b9\u5f0f\u8fdb\u884c\u63cf\u8ff0\u3002<\/p>\n
                      DBObject<\/span> json<\/span> =<\/span> (<\/span>DBObject<\/span>)<\/span> JSON<\/span>.<\/span>parse<\/span>(<\/span>\"{'name':'mkyong', 'age':30}\"<\/span>);<\/span>\r\ncoll<\/span>.<\/span>insert<\/span>(<\/span>json<\/span>);<\/span>\r\n<\/code><\/pre>\n
                      \u641c\u7d22\u6587\u6863<\/p>\n
                      \u641c\u7d22\u7b2c\u4e00\u4efd\u6587\u4ef6\u3002\u8981\u4ece\u96c6\u5408\u4e2d\u83b7\u53d6\u4e00\u4efd\u6587\u4ef6\uff0c\u53ea\u9700\u6309\u7167\u4ee5\u4e0b\u65b9\u5f0f\u8fdb\u884c\u63cf\u8ff0\u3002<\/p>\n
                      DBObject<\/span> myDoc<\/span> =<\/span> coll<\/span>.<\/span>findOne<\/span>();<\/span>\r\nSystem<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>myDoc<\/span>);<\/span>\r\n<\/code><\/pre>\n
                      \u4f7f\u7528\u5149\u6807\u83b7\u53d6\u6240\u6709\u6587\u4ef6\u3002\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u304b\u3089\u5168\u3066\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u53d6\u5f97\u3059\u308b\u306b\u306ffind()\u30e1\u30bd\u30c3\u30c9\u3092\u5229\u7528\u3057\u307e\u3059\u3002
                      \nfind()\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u3001\u30af\u30a8\u30ea\u306b\u4e00\u81f4\u3057\u305f\u5168\u3066\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u3059\u3002<\/p>\n
                      DBCursor<\/span> cursor<\/span> =<\/span> coll<\/span>.<\/span>find<\/span>();<\/span>\r\ntry<\/span> {<\/span>\r\n   while<\/span>(<\/span>cursor<\/span>.<\/span>hasNext<\/span>())<\/span> {<\/span>\r\n       System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>cursor<\/span>.<\/span>next<\/span>());<\/span>\r\n   }<\/span>\r\n}<\/span> finally<\/span> {<\/span>\r\n   cursor<\/span>.<\/span>close<\/span>();<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                      \u83b7\u53d6\u6587\u6863\u6570\u91cf\u8981\u67e5\u8be2\u6536\u85cf\u4e2d\u6709\u591a\u5c11\u4e2a\u6587\u6863\uff0c\u53ef\u4ee5\u4f7f\u7528getCount()\u65b9\u6cd5\u3002<\/p>\n
                      long<\/span> count<\/span> =<\/span> coll<\/span>.<\/span>getCount<\/span>();<\/span>\r\nSystem<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>count<\/span> +<\/span> \"\u4ef6\"<\/span>);<\/span>\r\n<\/code><\/pre>\n
                      \u4f7f\u7528\u67e5\u8be2\u83b7\u53d6\u4e00\u4e2a\u6587\u6863\u3002<\/p>\n
                      BasicDBObject<\/span> query<\/span> =<\/span> new<\/span> BasicDBObject<\/span>(<\/span>\"i\"<\/span>,<\/span> 71<\/span>);<\/span>\r\n\r\ncursor<\/span> =<\/span> coll<\/span>.<\/span>find<\/span>(<\/span>query<\/span>);<\/span>\r\n\r\ntry<\/span> {<\/span>\r\n   while<\/span>(<\/span>cursor<\/span>.<\/span>hasNext<\/span>())<\/span> {<\/span>\r\n       System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>cursor<\/span>.<\/span>next<\/span>());<\/span>\r\n   }<\/span>\r\n}<\/span> finally<\/span> {<\/span>\r\n   cursor<\/span>.<\/span>close<\/span>();<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                      \u4f7f\u7528\u64cd\u4f5c\u7b26\u8fdb\u884c\u67e5\u8be2\u4ee5\u641c\u7d22\u6587\u6863\u3002
                      \nMongoDB\u3067\u306f\u30af\u30a8\u30ea\u306b$\u30aa\u30da\u30ec\u30fc\u30bf\u3092\u5229\u7528\u3057\u3066\u691c\u7d22\u3084\u96c6\u8a08\u7b49\u304c\u884c\u3048\u307e\u3059\u3002
                      \n\u4f8b\u3048\u3070\u3001”qty”\u30d5\u30a3\u30fc\u30eb\u30c9\u304c20\u3067\u306a\u3044\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u691c\u7d22\u3059\u308b\u306b\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u307e\u3059<\/p>\n
                      db.inventory.find( { qty: { $ne: 20 } } )\r\n<\/code><\/pre>\n
                      \u6709\u5173\u8fd0\u7b97\u7b26\u7684\u8be6\u7ec6\u4fe1\u606f\u8bf7\u53c2\u8003\u300aMongoDB \u624b\u518c 2.6.3 \u2014 \u8fd0\u7b97\u7b26\u300b\u3002<\/p>\n
                      \u64cd\u4f5c\u7b26\u5c06\u5176\u8bbe\u7f6e\u4e3aDBObject\uff0c\u5e76\u5c06\u5176\u89c6\u4e3a\u5e38\u89c4\u5b57\u7b26\u4e32\u952e\u3002<\/p>\n
                      query<\/span> =<\/span> new<\/span> BasicDBObject<\/span>(<\/span>\"name\"<\/span>,<\/span>                                   \r\n        new<\/span> BasicDBObject<\/span>(<\/span>\"$ne\"<\/span>,<\/span> \"mkyong\"<\/span>)).<\/span>append<\/span>(<\/span>\"count\"<\/span>,<\/span>         \r\n        new<\/span> BasicDBObject<\/span>(<\/span>\"$gt\"<\/span>,<\/span> 1<\/span>));<\/span>                               \r\ncursor<\/span> =<\/span> coll<\/span>.<\/span>find<\/span>(<\/span>query<\/span>);<\/span>                                          \r\ntry<\/span> {<\/span>                                                               \r\n    while<\/span> (<\/span>cursor<\/span>.<\/span>hasNext<\/span>())<\/span> {<\/span>                                      \r\n        System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"use $ operrator -> \"<\/span> +<\/span> cursor<\/span>.<\/span>next<\/span>());<\/span>  \r\n    }<\/span>                                                               \r\n}<\/span> finally<\/span> {<\/span>                                                         \r\n    cursor<\/span>.<\/span>close<\/span>();<\/span>                                                 \r\n}<\/span>                                                                   \r\n<\/code><\/pre>\n
                      \u4e0d\u8fc7\uff0c\u7531\u4e8e\u521b\u5efaDBObject\u8fd8\u662f\u6bd4\u8f83\u9ebb\u70e6\uff0c\u6240\u4ee5\u6211\u4eec\u5c06\u4eceJSON\u751f\u6210\u67e5\u8be2\u3002<\/p>\n
                      json<\/span> =<\/span> (<\/span>DBObject<\/span>)<\/span> JSON<\/span>                                              \r\n        .<\/span>parse<\/span>(<\/span>\"{'name':{$ne:'mkyong'}, 'count':{$gt:1}}\"<\/span>);<\/span>         \r\ncursor<\/span> =<\/span> coll<\/span>.<\/span>find<\/span>(<\/span>json<\/span>);<\/span>                                           \r\ntry<\/span> {<\/span>                                                               \r\n    while<\/span> (<\/span>cursor<\/span>.<\/span>hasNext<\/span>())<\/span> {<\/span>                                      \r\n        System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"use $ ope(JSON) -> \"<\/span> +<\/span> cursor<\/span>.<\/span>next<\/span>());<\/span>  \r\n    }<\/span>                                                               \r\n}<\/span> finally<\/span> {<\/span>                                                         \r\n    cursor<\/span>.<\/span>close<\/span>();<\/span>                                                 \r\n}<\/span>                                                                   \r\n\r\ncoll<\/span>.<\/span>remove<\/span>(<\/span>new<\/span> BasicDBObject<\/span>());<\/span>                                   \r\n<\/code><\/pre>\n
                      \u6587\u6863\u66f4\u65b0
                      \n\u8981\u66f4\u65b0\u6587\u6863\uff0c\u9700\u8981\u83b7\u53d6\u8981\u66f4\u65b0\u7684DBObject\u5e76\u8fdb\u884c\u4fee\u6539\uff0c\u7136\u540e\u4f7f\u7528save()\u65b9\u6cd5\u8fdb\u884c\u66f4\u65b0\u3002
                      \n\u5728\u6b64\u8fc7\u7a0b\u4e2d\uff0c\u4e0d\u8981\u66f4\u6539_id\u3002\u56e0\u4e3a\u4f1a\u8986\u76d6\u4e0eDBObject\u7684_id\u5339\u914d\u7684\u6587\u6863\u3002<\/p>\n
                      doc<\/span> =<\/span> coll<\/span>.<\/span>findOne<\/span>();<\/span>                              \r\ndoc<\/span>.<\/span>put<\/span>(<\/span>\"name\"<\/span>,<\/span> \"MongoDB2\"<\/span>);<\/span> \/\/ name\u5c5e\u6027\u3092\u66f4\u65b0       <\/span>\r\ndoc<\/span>.<\/span>put<\/span>(<\/span>\"age\"<\/span>,<\/span> \"15\"<\/span>);<\/span>        \/\/ age\u5c5e\u6027\u3092\u8ffd\u52a0        <\/span>\r\ncoll<\/span>.<\/span>save<\/span>(<\/span>doc<\/span>);<\/span>                                    \r\n<\/code><\/pre>\n
                      \u5220\u9664\u6587\u4ef6\u8981\u5220\u9664\u6587\u6863\uff0c\u9700\u8981\u83b7\u53d6\u8981\u5220\u9664\u7684DBObject\uff0c\u5e76\u4f7f\u7528remove()\u65b9\u6cd5\u8fdb\u884c\u5220\u9664\u3002<\/p>\n
                      doc<\/span> =<\/span> coll<\/span>.<\/span>findOne<\/span>();<\/span>\r\ncoll<\/span>.<\/span>remove<\/span>(<\/span>doc<\/span>);<\/span>\r\n<\/code><\/pre>\n
                      \u5220\u9664\u6536\u85cf\u5982\u679c\u8981\u5220\u9664\u96c6\u5408\uff0c\u8bf7\u4f7f\u7528drop()\u65b9\u6cd5\u3002<\/p>\n
                      System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>db<\/span>.<\/span>getCollectionNames<\/span>());<\/span> \r\ncoll<\/span>.<\/span>drop<\/span>();<\/span>                                           \r\nSystem<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>db<\/span>.<\/span>getCollectionNames<\/span>());<\/span> \r\n<\/code><\/pre>\n
                      \u6837\u672c\u4ee3\u7801
                      \n\u4ee5\u4e0b\u4e3a\u5904\u7406\u6458\u8981\uff08\u65e0\u9700\u8ba4\u8bc1\uff09\uff1a<\/p>\n
                      MongoClient<\/span> client<\/span> =<\/span> null<\/span>;<\/span>                                               \r\n\r\ntry<\/span> {<\/span>                                                                    \r\n    \/\/ MondoDB\u30b5\u30fc\u30d0\u3078\u306e\u63a5\u7d9a                                                    <\/span>\r\n    client<\/span> =<\/span> new<\/span> MongoClient<\/span>(<\/span>\"localhost\"<\/span>,<\/span> 27017<\/span>);<\/span>                        \r\n    \/\/ client = new MongoClient();                                       <\/span>\r\n    \/\/ \u4f7f\u7528\u3059\u308bDB\u306e\u6307\u5b9a                                                         <\/span>\r\n    DB<\/span> db<\/span> =<\/span> client<\/span>.<\/span>getDB<\/span>(<\/span>\"mydb\"<\/span>);<\/span>                                        \r\n\r\n    DBCollection<\/span> coll<\/span> =<\/span> db<\/span>.<\/span>getCollection<\/span>(<\/span>\"testCollection\"<\/span>);<\/span>              \r\n\r\n    \/\/ Insert(append\u7248)                                                   <\/span>\r\n    DBObject<\/span> doc<\/span> =<\/span> new<\/span> BasicDBObject<\/span>(<\/span>\"name\"<\/span>,<\/span> \"MongoDB\"<\/span>)<\/span>                  \r\n            .<\/span>append<\/span>(<\/span>\"type\"<\/span>,<\/span> \"database\"<\/span>)<\/span>                                  \r\n            .<\/span>append<\/span>(<\/span>\"count\"<\/span>,<\/span> 1<\/span>)<\/span>                                          \r\n            .<\/span>append<\/span>(<\/span>\"info\"<\/span>,<\/span>                                              \r\n                    new<\/span> BasicDBObject<\/span>(<\/span>\"x\"<\/span>,<\/span> 203<\/span>).<\/span>append<\/span>(<\/span>\"y\"<\/span>,<\/span> 102<\/span>));<\/span>       \r\n    coll<\/span>.<\/span>insert<\/span>(<\/span>doc<\/span>);<\/span>                                                    \r\n\r\n    doc<\/span> =<\/span> new<\/span> BasicDBObject<\/span>(<\/span>\"name\"<\/span>,<\/span> \"MongoDB\"<\/span>)<\/span>                           \r\n            .<\/span>append<\/span>(<\/span>\"type\"<\/span>,<\/span> \"database\"<\/span>)<\/span>                                  \r\n            .<\/span>append<\/span>(<\/span>\"count\"<\/span>,<\/span> 2<\/span>)<\/span>                                          \r\n            .<\/span>append<\/span>(<\/span>\"info\"<\/span>,<\/span>                                              \r\n                    new<\/span> BasicDBObject<\/span>(<\/span>\"x\"<\/span>,<\/span> 400<\/span>).<\/span>append<\/span>(<\/span>\"y\"<\/span>,<\/span> -<\/span>10<\/span>));<\/span>       \r\n    coll<\/span>.<\/span>insert<\/span>(<\/span>doc<\/span>);<\/span>                                                    \r\n\r\n    \/\/ Insert(JSON\u7248)                                                     <\/span>\r\n    DBObject<\/span> json<\/span> =<\/span> (<\/span>DBObject<\/span>)<\/span> JSON<\/span>                                      \r\n            .<\/span>parse<\/span>(<\/span>\"{'name':'mkyong', 'age':30}\"<\/span>);<\/span>                       \r\n    coll<\/span>.<\/span>insert<\/span>(<\/span>json<\/span>);<\/span>                                                   \r\n\r\n    \/\/ 1\u4ef6\u3060\u3051\u691c\u7d22                                                            <\/span>\r\n    DBObject<\/span> myDoc<\/span> =<\/span> coll<\/span>.<\/span>findOne<\/span>();<\/span>                                     \r\n    System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"findOne() -> \"<\/span> +<\/span> myDoc<\/span>);<\/span>                         \r\n\r\n    \/\/ \u30ab\u30fc\u30bd\u30eb\u3092\u4f7f\u3063\u3066\u5168\u4ef6\u53d6\u5f97                                                      <\/span>\r\n    DBCursor<\/span> cursor<\/span> =<\/span> coll<\/span>.<\/span>find<\/span>();<\/span>                                       \r\n    try<\/span> {<\/span>                                                                \r\n        while<\/span> (<\/span>cursor<\/span>.<\/span>hasNext<\/span>())<\/span> {<\/span>                                       \r\n            System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"DBCursor - > \"<\/span> +<\/span> cursor<\/span>.<\/span>next<\/span>());<\/span>         \r\n        }<\/span>                                                                \r\n    }<\/span> finally<\/span> {<\/span>                                                          \r\n        cursor<\/span>.<\/span>close<\/span>();<\/span>                                                  \r\n    }<\/span>                                                                    \r\n\r\n    \/\/ \u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u4ef6\u6570\u53d6\u5f97                                                        <\/span>\r\n    long<\/span> count<\/span> =<\/span> coll<\/span>.<\/span>getCount<\/span>();<\/span>                                        \r\n    System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>count<\/span> +<\/span> \"\u4ef6\"<\/span>);<\/span>                                     \r\n\r\n    \/\/ \u30af\u30a8\u30ea\u3092\u4f7f\u3063\u30661\u4ef6\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u53d6\u5f97\u3059\u308b                                             <\/span>\r\n    BasicDBObject<\/span> query<\/span> =<\/span> new<\/span> BasicDBObject<\/span>(<\/span>\"name\"<\/span>,<\/span> \"MongoDB\"<\/span>);<\/span>          \r\n    cursor<\/span> =<\/span> coll<\/span>.<\/span>find<\/span>(<\/span>query<\/span>);<\/span>                                           \r\n    try<\/span> {<\/span>                                                                \r\n        while<\/span> (<\/span>cursor<\/span>.<\/span>hasNext<\/span>())<\/span> {<\/span>                                       \r\n            System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"use query -> \"<\/span> +<\/span> cursor<\/span>.<\/span>next<\/span>());<\/span>         \r\n        }<\/span>                                                                \r\n    }<\/span> finally<\/span> {<\/span>                                                          \r\n        cursor<\/span>.<\/span>close<\/span>();<\/span>                                                  \r\n    }<\/span>                                                                    \r\n\r\n    \/\/ $\u30aa\u30da\u30ec\u30fc\u30bf\u3092\u4f7f\u3063\u305f\u30af\u30a8\u30ea                                                     <\/span>\r\n    query<\/span> =<\/span> new<\/span> BasicDBObject<\/span>(<\/span>\"name\"<\/span>,<\/span>                                    \r\n            new<\/span> BasicDBObject<\/span>(<\/span>\"$ne\"<\/span>,<\/span> \"mkyong\"<\/span>)).<\/span>append<\/span>(<\/span>\"count\"<\/span>,<\/span>          \r\n            new<\/span> BasicDBObject<\/span>(<\/span>\"$gt\"<\/span>,<\/span> 1<\/span>));<\/span>                                \r\n    cursor<\/span> =<\/span> coll<\/span>.<\/span>find<\/span>(<\/span>query<\/span>);<\/span>                                           \r\n    try<\/span> {<\/span>                                                                \r\n        while<\/span> (<\/span>cursor<\/span>.<\/span>hasNext<\/span>())<\/span> {<\/span>                                       \r\n            System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"use $ operator -> \"<\/span> +<\/span> cursor<\/span>.<\/span>next<\/span>());<\/span>    \r\n        }<\/span>                                                                \r\n    }<\/span> finally<\/span> {<\/span>                                                          \r\n        cursor<\/span>.<\/span>close<\/span>();<\/span>                                                  \r\n    }<\/span>                                                                    \r\n\r\n    \/\/ JSON\u304b\u3089\u30af\u30a8\u30ea\u3092\u751f\u6210                                                      <\/span>\r\n    json<\/span> =<\/span> (<\/span>DBObject<\/span>)<\/span> JSON<\/span>                                               \r\n            .<\/span>parse<\/span>(<\/span>\"{'name':{$ne:'mkyong'}, 'count':{$gt:1}}\"<\/span>);<\/span>          \r\n    cursor<\/span> =<\/span> coll<\/span>.<\/span>find<\/span>(<\/span>json<\/span>);<\/span>                                            \r\n    try<\/span> {<\/span>                                                                \r\n        while<\/span> (<\/span>cursor<\/span>.<\/span>hasNext<\/span>())<\/span> {<\/span>                                       \r\n            System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"use $ ope(JSON) -> \"<\/span> +<\/span> cursor<\/span>.<\/span>next<\/span>());<\/span>   \r\n        }<\/span>                                                                \r\n    }<\/span> finally<\/span> {<\/span>                                                          \r\n        cursor<\/span>.<\/span>close<\/span>();<\/span>                                                  \r\n    }<\/span>                                                                    \r\n\r\n    \/\/ \u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8                                                     <\/span>\r\n    doc<\/span> =<\/span> coll<\/span>.<\/span>findOne<\/span>();<\/span>                                                \r\n    doc<\/span>.<\/span>put<\/span>(<\/span>\"name\"<\/span>,<\/span> \"MongoDB2\"<\/span>);<\/span>    \/\/ name\u5c5e\u6027\u3092\u66f4\u65b0                         <\/span>\r\n    doc<\/span>.<\/span>put<\/span>(<\/span>\"age\"<\/span>,<\/span> \"15\"<\/span>);<\/span>           \/\/ age\u5c5e\u6027\u3092\u8ffd\u52a0                          <\/span>\r\n    coll<\/span>.<\/span>save<\/span>(<\/span>doc<\/span>);<\/span>                                                      \r\n    cursor<\/span> =<\/span> coll<\/span>.<\/span>find<\/span>();<\/span>                                                \r\n    try<\/span> {<\/span>                                                                \r\n        while<\/span> (<\/span>cursor<\/span>.<\/span>hasNext<\/span>())<\/span> {<\/span>                                       \r\n            System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"updated -> \"<\/span> +<\/span> cursor<\/span>.<\/span>next<\/span>());<\/span>           \r\n        }<\/span>                                                                \r\n    }<\/span> finally<\/span> {<\/span>                                                          \r\n        cursor<\/span>.<\/span>close<\/span>();<\/span>                                                  \r\n    }<\/span>                                                                    \r\n\r\n    \/\/ \u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u524a\u9664                                                         <\/span>\r\n    doc<\/span> =<\/span> coll<\/span>.<\/span>findOne<\/span>();<\/span>                                                \r\n    coll<\/span>.<\/span>remove<\/span>(<\/span>doc<\/span>);<\/span>                                                    \r\n    cursor<\/span> =<\/span> coll<\/span>.<\/span>find<\/span>();<\/span>                                                \r\n    try<\/span> {<\/span>                                                                \r\n        while<\/span> (<\/span>cursor<\/span>.<\/span>hasNext<\/span>())<\/span> {<\/span>                                       \r\n            System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"deleted -> \"<\/span> +<\/span> cursor<\/span>.<\/span>next<\/span>());<\/span>           \r\n        }<\/span>                                                                \r\n    }<\/span> finally<\/span> {<\/span>                                                          \r\n        cursor<\/span>.<\/span>close<\/span>();<\/span>                                                  \r\n    }<\/span>                                                                    \r\n\r\n    \/\/ \u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u524a\u9664                                                          <\/span>\r\n    System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u524a\u9664\u524d: \"<\/span> +<\/span> db<\/span>.<\/span>getCollectionNames<\/span>());<\/span>         \r\n    coll<\/span>.<\/span>drop<\/span>();<\/span>                                                         \r\n    System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u524a\u9664\u5f8c: \"<\/span> +<\/span> db<\/span>.<\/span>getCollectionNames<\/span>());<\/span>         \r\n\r\n    coll<\/span>.<\/span>remove<\/span>(<\/span>new<\/span> BasicDBObject<\/span>());<\/span>                                    \r\n\r\n}<\/span> catch<\/span> (<\/span>UnknownHostException<\/span> e<\/span>)<\/span> {<\/span>                                       \r\n    \/\/ TODO Auto-generated catch block                                   <\/span>\r\n    e<\/span>.<\/span>printStackTrace<\/span>();<\/span>                                                 \r\n}<\/span> finally<\/span> {<\/span>                                                              \r\n    if<\/span> (<\/span>client<\/span> !=<\/span> null<\/span>)<\/span> {<\/span>                                                \r\n        client<\/span>.<\/span>close<\/span>();<\/span>                                                  \r\n    }<\/span>                                                                    \r\n}<\/span>                                                                        \r\n<\/code><\/pre>\n
                      \u9664\u6b64\u4e4b\u5916\uff0c\u8fd8\u6709\u5176\u4ed6\u5f15\u8d77\u4e86\u6211\u7684\u5174\u8da3\u7684\u4e8b\u60c5\u3002
                      \n\u9664\u4e86\u4e0a\u8ff0\u7684\u5185\u5bb9\uff0c\u6211\u8fd8\u4e86\u89e3\u4e86\u4e00\u4e9b\u5176\u4ed6\u5185\u5bb9\u5e76\u505a\u4e86\u5907\u5fd8\u5f55\u3002<\/p>\n
                      \u4ea4\u6613MongoDB\u6ca1\u6709\u4e8b\u52a1\uff0c\u5e76\u4e14\u662f\u540e\u53d6\u80dc\u7684\uff0c\u6240\u4ee5\u4f3c\u4e4e\u8981\u4f7f\u7528\u4e50\u89c2\u9501\u8fdb\u884c\u6392\u4ed6\u63a7\u5236\u3002<\/p>\n
                      \uff081\uff09\u901a\u8fc7\u67e5\u8be2\u63d0\u53d6\u6587\u6863\u3002
                      \n\uff082\uff09\u4fdd\u5b58\u65e7\u503c\u3002
                      \n\uff083\uff09\u66f4\u65b0\u6587\u6863\u3002
                      \n\uff084\uff09\u5c06\u65e7\u503c\uff08\u5305\u62ec _id\uff09\u4f5c\u4e3a\u7b2c\u4e00\u4e2a\u53c2\u6570\uff0c\u5c06\u66f4\u65b0\u540e\u7684\u65b0\u6587\u6863\u4f5c\u4e3a\u7b2c\u4e8c\u4e2a\u53c2\u6570\uff0c\u8c03\u7528 update \u65b9\u6cd5\u3002\u5982\u679c\u6587\u6863\u5df2\u88ab\u6539\u5199\uff0c\u5219\u66f4\u65b0\u5c06\u5931\u8d25\u3002
                      \n\uff085\uff09\u5982\u679c\u66f4\u65b0\u5931\u8d25\uff0c\u5219\u91cd\u65b0\u6267\u884c\uff081\uff09\u3002<\/p><\/blockquote>\n
                      \u542c\u8bf4\u662f\u8fd9\u6837\u7684\u3002<\/p>\n
                      \u6b64\u5916\uff0c\u5373\u4f7f\u5728\u4e00\u7cfb\u5217\u7684\u64cd\u4f5c\u4e2d\u53d1\u751f\u9519\u8bef\uff0c\u4e5f\u65e0\u6cd5\u901a\u8fc7\u56de\u6eda\u6765\u64a4\u9500\u4e4b\u524d\u7684\u5904\u7406\u3002\u4f3c\u4e4e\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528db.getLastError()\u65b9\u6cd5\u6765\u786e\u8ba4\u6700\u8fd1\u53d1\u751f\u7684\u9519\u8bef\u3002<\/p>\n
                      save()\u3001insert()\u548cupdate()\u7684\u533a\u522b.\u7531\u4e8esave()\u65b9\u6cd5\u3001insert()\u65b9\u6cd5\u548cupdate()\u65b9\u6cd5\u7684\u4f7f\u7528\u5dee\u5f02\u4e0d\u592a\u660e\u786e\uff0c\u6240\u4ee5\u603b\u7ed3\u5982\u4e0b\u3002
                      \n\u8be6\u7ec6\u60c5\u51b5\u8bf7\u53c2\u8003javadoc\u3002(DBCollection)<\/p>\n
                      \n
                      \nsave()insert()update()\u66f4\u65b0\u3067\u304d\u308b\u4ef6\u65701\u4ef61\u4ef6\u4ee5\u4e0a1\u4ef6\u4ee5\u4e0a(*1)\u5bfe\u8c61\u306e\u6307\u5b9a\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u30af\u30a8\u30ea\u5bfe\u8c61\u30ec\u30b3\u30fc\u30c9\u306e\u6709\u7121\u7b49_id\u304c\u7121\u3051\u308c\u3070Insert\u3001\u3042\u308c\u3070Upsert-\u6307\u5b9a\u3057\u305f\u30af\u30a8\u30ea\u3092\u767a\u884c\u3057\u305f\u6642\u70b9\u3067\u53d6\u5f97\u3055\u308c\u308b_id\u306b\u5bfe\u5fdc\u3059\u308b\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u304c\u3001Update\u5b9f\u884c\u6642\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u306b\u7121\u3044\u5834\u5408\u306f\u66f4\u65b0\u5931\u6557*21. \u5982\u679c\u4f7f\u7528updateMulti()\u65b9\u6cd5\uff0c\u6216\u5c06update()\u65b9\u6cd5\u7684\u7b2c4\u4e2a\u53c2\u6570\u8bbe\u7f6e\u4e3atrue\u65f6\uff0c\u53ef\u4ee5\u6279\u91cf\u66f4\u65b0\u591a\u4e2a\u8bb0\u5f55\u3002\u5426\u5219\uff0c\u53ea\u66f4\u65b0\u7b2c\u4e00\u6761\u8bb0\u5f55\u3002
                      \n2. \u5982\u679c\u5c06update()\u65b9\u6cd5\u7684\u7b2c3\u4e2a\u53c2\u6570\u8bbe\u7f6e\u4e3atrue\uff0c\u5219\u4f1a\u6267\u884cUpsert\u64cd\u4f5c\u3002<\/p>\n
                      \u6279\u91cf\u64cd\u4f5c (p\u012b zu\u00f2)<\/p>\n
                        \n
                      • \n
                          \u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u64cd\u4f5c\u3059\u308b\u5834\u5408\u306fBulk\u30aa\u30da\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u5229\u7528\u3059\u308b\u3068\u901f\u3044\u3089\u3057\u3044<\/ul>\n<\/li>\n<\/ul>\n
                           <\/p>\n
                            \n
                          • \n
                              insert\/update\/remove\u304c\u4e00\u62ec\u3067\u51e6\u7406\u3067\u304d\u308b<\/ul>\n<\/li>\n<\/ul>\n
                               <\/p>\n
                                \n
                              • \n
                                  Bukl\u30aa\u30da\u30ec\u30fc\u30b7\u30e7\u30f3\u306b\u306f2\u7a2e\u985e\u3042\u308b<\/ul>\n<\/li>\n<\/ul>\n
                                  Ordered bulk operation\uff1a\u9806\u5e8f\u3092\u4fdd\u8a3c
                                  \nUnordered bulk operations\uff1a\u9806\u5e8f\u3092\u4fdd\u8a3c\u3057\u306a\u3044\uff08\u4e26\u884c\u51e6\u7406\uff09<\/p>\n
                                  \u8fd9\u4e2a\u8bed\u53e5\u7684addBatch()\u548cexecuteBatch()\u51fd\u6570\u770b\u8d77\u6765\u5f88\u76f8\u4f3c\u3002
                                  \n\u6837\u4f8b\u4ee3\u7801\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
                                  \/\/ 1. Ordered bulk operation<\/span>\r\nBulkWriteOperation<\/span> builder<\/span> =<\/span> coll<\/span>.<\/span>initializeOrderedBulkOperation<\/span>();<\/span>\r\nbuilder<\/span>.<\/span>insert<\/span>(<\/span>new<\/span> BasicDBObject<\/span>(<\/span>\"_id\"<\/span>,<\/span> 1<\/span>));<\/span>\r\nbuilder<\/span>.<\/span>insert<\/span>(<\/span>new<\/span> BasicDBObject<\/span>(<\/span>\"_id\"<\/span>,<\/span> 2<\/span>));<\/span>\r\nbuilder<\/span>.<\/span>insert<\/span>(<\/span>new<\/span> BasicDBObject<\/span>(<\/span>\"_id\"<\/span>,<\/span> 3<\/span>));<\/span>\r\n\r\nbuilder<\/span>.<\/span>find<\/span>(<\/span>new<\/span> BasicDBObject<\/span>(<\/span>\"_id\"<\/span>,<\/span> 1<\/span>)).<\/span>updateOne<\/span>(<\/span>new<\/span> BasicDBObject<\/span>(<\/span>\"$set\"<\/span>,<\/span> new<\/span> BasicDBObject<\/span>(<\/span>\"x\"<\/span>,<\/span> 2<\/span>)));<\/span>\r\nbuilder<\/span>.<\/span>find<\/span>(<\/span>new<\/span> BasicDBObject<\/span>(<\/span>\"_id\"<\/span>,<\/span> 2<\/span>)).<\/span>removeOne<\/span>();<\/span>\r\nbuilder<\/span>.<\/span>find<\/span>(<\/span>new<\/span> BasicDBObject<\/span>(<\/span>\"_id\"<\/span>,<\/span> 3<\/span>)).<\/span>replaceOne<\/span>(<\/span>new<\/span> BasicDBObject<\/span>(<\/span>\"_id\"<\/span>,<\/span> 3<\/span>).<\/span>append<\/span>(<\/span>\"x\"<\/span>,<\/span> 4<\/span>));<\/span>\r\n\r\nBulkWriteResult<\/span> result<\/span> =<\/span> builder<\/span>.<\/span>execute<\/span>();<\/span>\r\n\r\n\/\/ 2. Unordered bulk operation - no guarantee of order of operation<\/span>\r\nbuilder<\/span> =<\/span> coll<\/span>.<\/span>initializeUnorderedBulkOperation<\/span>();<\/span>\r\nbuilder<\/span>.<\/span>find<\/span>(<\/span>new<\/span> BasicDBObject<\/span>(<\/span>\"_id\"<\/span>,<\/span> 1<\/span>)).<\/span>removeOne<\/span>();<\/span>\r\nbuilder<\/span>.<\/span>find<\/span>(<\/span>new<\/span> BasicDBObject<\/span>(<\/span>\"_id\"<\/span>,<\/span> 2<\/span>)).<\/span>removeOne<\/span>();<\/span>\r\n\r\nresult<\/span> =<\/span> builder<\/span>.<\/span>execute<\/span>();<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
                                  \u4ee5\u4e0b\u662f\u5173\u4e8e\u5982\u4f55\u4f7f\u7528Java MongoDB\u9a71\u52a8\u7a0b\u5e8f\u4eceJava\u8bbf\u95eeMongoDB\u7684\u65b9\u6cd5\u7684\u5907\u5fd8\u5f55\uff0c\u4e13\u4e3a\u5b8c\u5168\u521d\u5b66\u8005\u800c […]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-29615","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"\n\u4f7f\u7528Java\u8fde\u63a5MongoDB\u5e76\u8fdb\u884c\u8bbf\u95ee\uff08\u8fde\u63a5\u3001\u641c\u7d22\u3001\u63d2\u5165\u3001\u66f4\u65b0\u3001\u5220\u9664\uff09 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8e\u4f7f\u7528Java\u8fde\u63a5MongoDB\u5e76\u8fdb\u884c\u8bbf\u95ee\uff08\u8fde\u63a5\u3001\u641c\u7d22\u3001\u63d2\u5165\u3001\u66f4\u65b0\u3001\u5220\u9664\uff09\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528java\u8fde\u63a5mongodb\u5e76\u8fdb\u884c\u8bbf\u95ee\uff08\u8fde\u63a5\u3001\u641c\u7d22\u3001\u63d2\u5165\u3001\u66f4\u65b0\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u4f7f\u7528Java\u8fde\u63a5MongoDB\u5e76\u8fdb\u884c\u8bbf\u95ee\uff08\u8fde\u63a5\u3001\u641c\u7d22\u3001\u63d2\u5165\u3001\u66f4\u65b0\u3001\u5220\u9664\uff09\" \/>\n<meta property=\"og:description\" content=\"\u5173\u4e8e\u4f7f\u7528Java\u8fde\u63a5MongoDB\u5e76\u8fdb\u884c\u8bbf\u95ee\uff08\u8fde\u63a5\u3001\u641c\u7d22\u3001\u63d2\u5165\u3001\u66f4\u65b0\u3001\u5220\u9664\uff09\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528java\u8fde\u63a5mongodb\u5e76\u8fdb\u884c\u8bbf\u95ee\uff08\u8fde\u63a5\u3001\u641c\u7d22\u3001\u63d2\u5165\u3001\u66f4\u65b0\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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