{"id":29717,"date":"2023-10-20T16:55:34","date_gmt":"2022-12-17T22:02:16","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8java-mongodb%e9%a9%b1%e5%8a%a8%e7%a8%8b%e5%ba%8f%e8%bf%9e%e6%8e%a5%e5%88%b0mongodb%e5%b9%b6%e6%89%a7%e8%a1%8c%e6%96%87%e6%a1%a3%e7%9a%84crud%e6%93%8d%e4%bd%9c%e3%80%82\/"},"modified":"2025-08-12T15:32:42","modified_gmt":"2025-08-12T07:32:42","slug":"%e4%bd%bf%e7%94%a8java-mongodb%e9%a9%b1%e5%8a%a8%e7%a8%8b%e5%ba%8f%e8%bf%9e%e6%8e%a5%e5%88%b0mongodb%e5%b9%b6%e6%89%a7%e8%a1%8c%e6%96%87%e6%a1%a3%e7%9a%84crud%e6%93%8d%e4%bd%9c%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8java-mongodb%e9%a9%b1%e5%8a%a8%e7%a8%8b%e5%ba%8f%e8%bf%9e%e6%8e%a5%e5%88%b0mongodb%e5%b9%b6%e6%89%a7%e8%a1%8c%e6%96%87%e6%a1%a3%e7%9a%84crud%e6%93%8d%e4%bd%9c%e3%80%82\/","title":{"rendered":"\u4f7f\u7528Java MongoDB\u9a71\u52a8\u7a0b\u5e8f\u8fde\u63a5\u5230MongoDB\u5e76\u6267\u884c\u6587\u6863\u7684CRUD\u64cd\u4f5c"},"content":{"rendered":"

Java MongoDB\u9a71\u52a8\u7a0b\u5e8f\u662f\u4ec0\u4e48\u3002 <\/p>\n

\u8fd9\u662f\u4e00\u4e2a\u7528\u4e8e\u8bbf\u95ee\u6307\u5b9aMongoDB\u5e76\u5904\u7406\u5176\u6570\u636e\u7684Java\u9a71\u52a8\u7a0b\u5e8f\u3002\u8fd8\u6709\u4e00\u4e2aBSON\u5e93\uff08\u4e3b\u8981\u7528\u4e8eMongoDB\u7684\u4e8c\u8fdb\u5236JSON\u683c\u5f0f\uff09\u3002<\/p>\n

\u4e0b\u8f7djar\u6587\u4ef6\u5728\u516c\u5f0f\u7684Github\u4e0a\uff0c\u53ef\u4ee5\u4e0b\u8f7d\u5305\u62ec\u5386\u53f2\u7248\u672c\u5728\u5185\u7684\u8f6f\u4ef6\u3002\u5982\u679c\u4f7f\u7528Maven\uff0c\u53ea\u9700\u8981\u5c06\u5176\u6dfb\u52a0\u5230pom\u6587\u4ef6\u4e2d\uff0c\u975e\u5e38\u65b9\u4fbf\u3002\uff08\u4e0d\u662f\u4e3a\u4e86\u505a\u5e7f\u544a\uff09<\/p>\n
<dependencies>\r\n    <dependency>\r\n        <groupId>org.mongodb<\/groupId>\r\n        <artifactId>mongodb-driver<\/artifactId>\r\n        <version>3.3.0<\/version>\r\n    <\/dependency>\r\n<\/dependencies>\r\n<\/code><\/pre>\n
\u6216\u8005\u4f7f\u7528Gradle\u3002<\/p>\n
dependencies<\/span> {<\/span>\r\n   compile<\/span> 'org.mongodb:mongo-java-driver:3.3.0'<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u8fde\u63a5\u8fde\u63a5\u5c06\u6309\u7167\u4ee5\u4e0b\u6b65\u9aa4\u8fdb\u884c\u914d\u7f6e\u3002<\/p>\n
\u521b\u5efa\u5ba2\u6237\u521b\u5efa\u5ba2\u6237\u7aef\u7684\u8bbe\u7f6e\u5982\u4e0b\uff1a
\n\u53ef\u4ee5\u901a\u8fc7\u6307\u5b9a host \u548c port \u4f5c\u4e3a\u53c2\u6570\uff0c\u6216\u8005\u6307\u5b9a\u670d\u52a1\u5668\u5730\u5740\u3002
\n\u8bf7\u6839\u636e\u60a8\u7684 MongoDB \u73af\u5883\u8fdb\u884c\u914d\u7f6e\u3002<\/p>\n
\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f8b\u5b50\u3002\u66f4\u8be6\u7ec6\u7684\u4fe1\u606f\u8bf7\u53c2\u8003http:\/\/api.mongodb.com\/java\/2.10.1\/com\/mongodb\/MongoClient.html<\/p>\n
\/\/\u57fa\u672c\u5f62<\/span>\r\nMongoCliant<\/span> cliant<\/span> =<\/span> new<\/span> MongoCliant<\/span>();<\/span>\r\n\r\n\r\n\/\/host\u3068port\u8a2d\u5b9a<\/span>\r\nString<\/span> host<\/span> =<\/span> \"localhost\"<\/span>;<\/span>\r\nint<\/span> port<\/span> =<\/span> 27017<\/span>;<\/span>\r\nMongoCliant<\/span> cliant<\/span> =<\/span> new<\/span> MongoCliant<\/span>(<\/span>host<\/span>,<\/span> port<\/span>);<\/span>\r\n\r\n\r\n\/\/\u8907\u6570\u306e\u30b5\u30fc\u30d0\u30fc\u3092\u5bfe\u8c61\u3068\u3057\u305f\u30a2\u30af\u30bb\u30b9\u306e\u5834\u5408<\/span>\r\nServerAddress<\/span> primary<\/span> =<\/span> new<\/span> ServerAddress<\/span>(<\/span>\"hoge\"<\/span>,<\/span> port<\/span>);<\/span>\r\nServerAddress<\/span> secondary<\/span> =<\/span> new<\/span> ServerAddress<\/span>(<\/span>\"fuga\"<\/span>,<\/span> port<\/span>);<\/span>\r\nList<\/span><<\/span>ServerAddress<\/span>><\/span> addressArr<\/span> =<\/span> new<\/span> ArrayList<\/span><>(<\/span>Arrays<\/span>.<\/span>asList<\/span>(<\/span>primary<\/span>,<\/span> secondary<\/span>));<\/span>\r\n\r\nMongoCliant<\/span> cliant<\/span> =<\/span> new<\/span> MongoCliant<\/span>(<\/span>addressArr<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u5982\u679c\u5728\u591a\u4e2a\u6570\u636e\u5e93\u4e2d\u8bbe\u7f6e\u4e86\u5197\u4f59\u914d\u7f6e\uff0c\u4f8b\u5982\u8bbe\u7f6e\u4e86\u526f\u672c\u96c6\uff0c\u901a\u8fc7\u50cf\u4e0b\u9762\u8fd9\u6837\u7684\u8bbe\u7f6e\uff0c\u5b83\u4f1a\u81ea\u52a8\u9009\u62e9\u8981\u8fde\u63a5\u7684\u6570\u636e\u5e93\u3002\u987a\u4fbf\u63d0\u4e00\u53e5\uff0cServerAddress\u4e5f\u662fMongoDB\u9a71\u52a8\u7a0b\u5e8fAPI\u4e4b\u4e00\uff0c\u5c31\u50cf\u5728\u521b\u5efaMongoClient\u65f6\u4e00\u6837\uff0c\u53ef\u4ee5\u901a\u8fc7\u6307\u5b9a\u4e3b\u673a\u540d\u3001\u7aef\u53e3\u7b49\u6765\u521b\u5efa\u5b83\u3002<\/p>\n
\u83b7\u53d6DB\u548ccollection\u901a\u8fc7\u5ba2\u6237\u7aef\u83b7\u53d6\u6570\u636e\u5e93\u548c\u96c6\u5408\u3002
\n\u203b\u5728MongoDB\u4e2d\uff0c\u628a\u8868\u79f0\u4e3a\u201c\u96c6\u5408\u201d\u3002<\/p>\n
\/\/DB\u53d6\u5f97<\/span>\r\nString<\/span> databaseName<\/span> =<\/span> \"dbname\"<\/span>;<\/span>\r\nMongoDatabase<\/span> database<\/span> =<\/span> cliant<\/span>.<\/span>getDatabase<\/span>(<\/span>databaseName<\/span>);<\/span>\r\n\r\n\/\/collection\u53d6\u5f97<\/span>\r\nString<\/span> collectionName<\/span> =<\/span> \"collection\"<\/span>;<\/span>\r\nMongoCollection<\/span><<\/span>Document<\/span>><\/span> coll<\/span> =<\/span> mongoDb<\/span>.<\/span>getCollection<\/span>(<\/span>collectionName<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u73b0\u5728\uff0c\u5df2\u7ecf\u51c6\u5907\u597d\u8bbf\u95ee\u6587\u6863\u4e86\u3002<\/p>\n
\u95b1\u8b80\u504f\u597d\u8a2d\u7f6e\u6211\u5df2\u5728\u8fd9\u91cc\u5199\u4e0b\u4e86\uff1a
\nhttp:\/\/qiita.com\/ricoirico\/items\/3d83baba6c191806f097<\/p>\n
\u5728\u521b\u5efa\u6216\u521b\u5efa\u540eMongoCollection\u5b9e\u4f8b\u6216MongoDatabase\u5b9e\u4f8b\u65f6\uff0c\u4e00\u822c\u4f1a\u9644\u52a0\u8bbe\u7f6e\u3002<\/p>\n
\u9605\u8bfb\u83b7\u53d6\u6216\u68c0\u7d22\u96c6\u5408\u4e2d\u7684\u6587\u6863\u3002<\/p>\n
\u83b7\u53d6\u6587\u6863\u6570\u91cf\u4ee5long\u7c7b\u578b\u8fd4\u56de\u3002<\/p>\n
long<\/span> cnt<\/span> =<\/span> coll<\/span>.<\/span>count<\/span>();<\/span>\r\n\r\nSystem<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>cnt<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u83b7\u53d6\u6240\u6709\u6587\u4ef6<\/p>\n
String<\/span> doc<\/span> =<\/span> \"\"<\/span>;<\/span>\r\nFindIterable<\/span><<\/span>Document<\/span>><\/span> iterator<\/span> =<\/span> coll<\/span>.<\/span>find<\/span>();<\/span>\r\nMongoCursor<\/span> cursor<\/span> =<\/span> iterator<\/span>.<\/span>iterator<\/span>();<\/span>\r\n\r\nwhile<\/span>(<\/span>cursor<\/span>.<\/span>hasNext<\/span>()){<\/span>\r\n     doc<\/span> +=<\/span> cursor<\/span>.<\/span>next<\/span>();<\/span>\r\n     doc<\/span> +=<\/span> System<\/span>.<\/span>getProperty<\/span>(<\/span>\"line.separator\"<\/span>);<\/span>\r\n}<\/span>\r\n\r\nSystem<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>doc<\/span>);<\/span> \/\/\u51fa\u529b\u4f8b: Document{{_id=582dbfd76d255a19a02b22b2, name=test}}<\/span>\r\n<\/code><\/pre>\n
\u51fa\u73b0\u4e86\u4e00\u4e2a\u6211\u4e0d\u719f\u6089\u7684\u7c7b\uff0c\u53eb\u505aFindIterable\u3002
\n\u5b83\u662f\u9a71\u52a8\u7a0b\u5e8fAPI\u7684\u4e00\u90e8\u5206\uff0c\u7528\u4e8e\u6570\u636e\u641c\u7d22\u3002
\n\u5c06\u5176\u4e0eMongoCursor\u7ed3\u5408\u4f7f\u7528\uff0c\u4f5c\u4e3a\u4e00\u4e2a\u8fed\u4ee3\u5668\u6765\u4f7f\u7528\u3002<\/p>\n
\u987a\u4fbf\u63d0\u4e00\u4e0b\uff0c\u6709\u5173\u8fed\u4ee3\u5668\u7684\u8be6\u7ec6\u4fe1\u606f\u8bf7\u67e5\u770b\u8fd9\u91cc\u2192 http:\/\/detail.chiebukuro.yahoo.co.jp\/qa\/question_detail\/q1345203893<\/p>\n
\u6e38\u6807.cursor.next();\u8fd4\u56de\u7684\u662fObject\u7c7b\u578b\uff0c\u53ef\u4ee5\u76f4\u63a5\u8f6c\u4e3aString\u7c7b\u578b\u3002<\/p>\n
\u4f7f\u7528\u6307\u5b9a\u7684\u53c2\u6570\u6765\u83b7\u53d6\u6587\u6863\u3002<\/p>\n
String<\/span> doc<\/span> =<\/span> \"\"<\/span>;<\/span>\r\nString<\/span> key<\/span> =<\/span> \"name\"<\/span>;<\/span>\r\nString<\/span> param<\/span> =<\/span> \"test\"<\/span>;<\/span>\r\nDocument<\/span> query<\/span> =<\/span> new<\/span> Document<\/span>(<\/span>key<\/span>,<\/span> param<\/span>);<\/span>\r\n\r\nFindIterable<\/span><<\/span>Document<\/span>><\/span> iterator<\/span> =<\/span> coll<\/span>.<\/span>find<\/span>(<\/span>query<\/span>);<\/span>\r\nMongoCursor<\/span> cursor<\/span> =<\/span> iterator<\/span>.<\/span>iterator<\/span>();<\/span>\r\n\r\nwhile<\/span>(<\/span>cursor<\/span>.<\/span>hasNext<\/span>()){<\/span>\r\n     doc<\/span> +=<\/span> cursor<\/span>.<\/span>next<\/span>();<\/span>\r\n     doc<\/span> +=<\/span> System<\/span>.<\/span>getProperty<\/span>(<\/span>\"line.separator\"<\/span>);<\/span>\r\n}<\/span>\r\n\r\nSystem<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>doc<\/span>);<\/span>\r\n\r\n<\/code><\/pre>\n
\u53ea\u9700\u5728\u8fed\u4ee3\u5668\u4e2d\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u641c\u7d22\u6761\u4ef6\u8fd9\u6837\u7b80\u5355\u3002
\n\u901a\u8fc7\u5c06\u5176\u63d2\u5165\u5230\u5b9e\u73b0bson\u63a5\u53e3\u7684Document\u7c7b\u4e2d\uff0c\u5c06\u5176\u8f6c\u6362\u4e3aMongoDB\u53ef\u4ee5\u8bfb\u53d6\u7684\u683c\u5f0f… \u8fd9\u662f\u63a8\u6d4b\u3002
\n\u987a\u4fbf\u63d0\u4e00\u4e0b\uff0c\u5982\u679c\u8981\u8bbe\u7f6e\u591a\u4e2a\u641c\u7d22\u6761\u4ef6\uff0c\u53ef\u4ee5\u4f7f\u7528\u5173\u8054\u6570\u7ec4\u5b58\u50a8\u3002\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
Map<\/span><<\/span>String<\/span>,<\/span> Object<\/span>><\/span> map<\/span> =<\/span> new<\/span> HashMap<\/span><<\/span>String<\/span>,<\/span> Object<\/span>>(){<\/span>\r\n    {<\/span>put<\/span>(<\/span>\"name\"<\/span>,<\/span> \"\u307b\u3052\u5c71\u307b\u3052\u592a\u90ce\"<\/span>);}<\/span>\r\n    {<\/span>put<\/span>(<\/span>\"age\"<\/span>,<\/span> 13<\/span>);}<\/span>\r\n};<\/span>\r\nDocument<\/span> query<\/span> =<\/span> new<\/span> Document<\/span>(<\/span>map<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u521b\u5efa\u63d2\u5165\u6570\u636e\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u5148\u524d\u7f16\u5199\u7684Document\u7c7b\u3002
\n\u5982\u679c\u5728Document\u4e2d\u63d2\u5165\u65f6\u95f4\u6233\uff0c\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528Date\u7c7b\u578b\uff0c\u5b83\u4f1a\u81ea\u52a8\u5904\u7406\u3002\u975e\u5e38\u65b9\u4fbf\uff01<\/p>\n
Document<\/span> doc<\/span> =<\/span> new<\/span> Document<\/span>();<\/span>\r\n\r\ndoc<\/span>.<\/span>append<\/span>(<\/span>\"name\"<\/span>,<\/span> \"\u307b\u3052\u5c71\u307b\u3052\u592a\u90ce\"<\/span>);<\/span>\r\ndoc<\/span>.<\/span>append<\/span>(<\/span>\"age\"<\/span>,<\/span> 13<\/span>);<\/span>\r\nDate<\/span> currentDate<\/span> =<\/span> new<\/span> Date<\/span>();<\/span>\r\ndoc<\/span>.<\/span>append<\/span>(<\/span>\"lastModified\"<\/span>,<\/span> \"ISODate(\"<\/span>+<\/span>currentDate<\/span>+<\/span>\")\"<\/span>);<\/span>\r\n\r\ncoll<\/span>.<\/span>insertOne<\/span>(<\/span>doc<\/span>);<\/span>\r\n\r\n<\/code><\/pre>\n
\u5f53\u5c06ObjectID\u76f4\u63a5\u5b58\u5165MongoDB\u65f6\uff0c\u5b83\u4f1a\u50cf\u4ee5\u524d\u4e00\u6837\u81ea\u52a8\u751f\u6210\u3002
\n\u4ee5\u524d\uff0c\u4f3c\u4e4e\u53ef\u4ee5\u901a\u8fc7\u89e3\u6790JSON\u683c\u5f0f\u7684\u5b57\u7b26\u4e32\u6765\u521b\u5efaObjectID\uff0c\u4f46\u662f\u968f\u7740\u9a71\u52a8\u7a0b\u5e8f\u7684\u5347\u7ea7\uff0c\u6211\u65e0\u6cd5\u786e\u5b9a\u5b83\u662f\u53d8\u5f97\u4e0d\u518d\u53ef\u884c\u8fd8\u662f\u88ab\u5f03\u7528\u4e86\u3002
\n\u5f88\u9057\u61be\uff0c\u6211\u6ca1\u6709\u627e\u5230\u4efb\u4f55\u6267\u884c\u793a\u4f8b\u3002<\/p>\n
\u5982\u679c\u8981\u540c\u65f6\u63d2\u5165\u591a\u4e2a\u6570\u636e\uff0c\u53ef\u4ee5\u4f7f\u7528insertMany()\u65b9\u6cd5\u3002
\n\u53ef\u4ee5\u4f7f\u7528Document\u7c7b\u578b\u7684List\u4f5c\u4e3a\u53c2\u6570\u3002
\n\u8981\u540c\u65f6\u63d2\u5165\u591a\u4e2a\u6570\u636e\uff0c\u53ef\u4ee5\u4f7f\u7528insertMany()\u65b9\u6cd5\u3002\u63a5\u53d7\u4e00\u4e2aDocument\u7c7b\u578b\u7684List\u4f5c\u4e3a\u53c2\u6570\u3002<\/p>\n
\u66f4\u65b0
\n <\/p>\n
\u6b63\u5982\u4e0a\u6587\u6240\u8ff0\uff0cMongoDB\u5728\u6570\u636e\u66f4\u65b0\u65f6\u5177\u6709\u72ec\u7279\u7684\u884c\u4e3a\uff0c\u4f1a\u5b8c\u5168\u8986\u76d6\u6307\u5b9a\u7684\u5185\u5bb9\u3002\u867d\u7136\u6709\u9009\u9879\u5b57\u7b26\u4f5c\u4e3a\u907f\u514d\u7b56\u7565\uff0c\u4f46\u5728\u672c\u9a71\u52a8\u7a0b\u5e8f\u4e2d\uff0c\u60a8\u4ecd\u7136\u53ef\u4ee5\u4f7f\u7528\u76f8\u540c\u7684\u65b9\u5f0f\u6765\u66f4\u65b0\u6587\u6863\u3002<\/p>\n
Document<\/span> updDoc<\/span> =<\/span> new<\/span> Document<\/span>(<\/span>\"name\"<\/span>,<\/span> \"\u30d4\u30b3\u5c71\u30d4\u30b3\u592a\u90ce\"<\/span>);<\/span>\r\n\r\ncoll<\/span>.<\/span>updateOne<\/span>(<\/span>Filters<\/span>.<\/span>eq<\/span>(<\/span>\"name\"<\/span>,<\/span> \"\u307b\u3052\u5c71\u307b\u3052\u592a\u90ce\"<\/span>),<\/span> new<\/span> Document<\/span>(<\/span>\"$set\"<\/span>,<\/span> updDoc<\/span>));<\/span>\r\n<\/code><\/pre>\n
\u5c3d\u7ba1\u5728\u7ed3\u6784\u4e0a\u6709\u4e9b\u590d\u6742\uff0c\u4f46\u901a\u8fc7Filters\u7c7b\u7684eq\u65b9\u6cd5\u53ef\u4ee5\u641c\u7d22\u5339\u914d\u7684\u6587\u6863\uff0c\u5e76\u4f7f\u7528\u5e26\u6709\u9009\u9879\u5b57\u7b26\u7684\u66f4\u65b0\u6587\u6863\u5bf9\u5339\u914d\u7684\u6570\u636e\u8fdb\u884c\u66f4\u65b0\u3002
\n\u4e0e\u63d2\u5165\u64cd\u4f5c\u7c7b\u4f3c\uff0c\u66f4\u65b0\u64cd\u4f5c\u4e5f\u6709\u4e00\u4e2a\u53eb\u505aupdateMany()\u7684\u65b9\u6cd5\uff0c\u5b83\u5c06\u66f4\u65b0\u6240\u6709\u5339\u914d\u7684\u6587\u6863\u3002<\/p>\n
\u66f4\u65b0\/\u63d2\u5165\u6570\u636e\u5982\u679c\u60f3\u8981\u5b9e\u73b0\u300c\u5982\u679c\u5b58\u5728\u5339\u914d\u7684\u6570\u636e\u5219\u66f4\u65b0\uff0c\u5426\u5219\u65b0\u5efa\u300d\u7684\u884c\u4e3a\uff0c\u540c\u6837\u53ef\u4ee5\u4f7f\u7528updateOne()\u65b9\u6cd5\u5b9e\u73b0\u3002\u552f\u4e00\u4e0d\u540c\u7684\u662f\u9700\u8981\u8bbe\u7f6eUpdateOptions\u3002<\/p>\n
Document<\/span> updDoc<\/span> =<\/span> new<\/span> Document<\/span>(<\/span>\"name\"<\/span>,<\/span> \"\u30d4\u30b3\u5c71\u30d4\u30b3\u592a\u90ce\"<\/span>);<\/span>\r\n\r\nUpdateOptions<\/span> option<\/span> =<\/span> new<\/span> UpdateOptions<\/span>().<\/span>upsert<\/span>(<\/span>true<\/span>);<\/span>\r\n\r\ncoll<\/span>.<\/span>updateOne<\/span>(<\/span>Filters<\/span>.<\/span>eq<\/span>(<\/span>\"name\"<\/span>,<\/span> \"\u307b\u3052\u5c71\u307b\u3052\u592a\u90ce\"<\/span>),<\/span> new<\/span> Document<\/span>(<\/span>\"$set\"<\/span>,<\/span> updDoc<\/span>),<\/span> option<\/span>);<\/span>\r\n<\/code><\/pre>\n
\u5220\u9664## \u5220\u9664\u6587\u6863
\n\u8981\u5220\u9664\u6587\u6863\uff0c\u53ef\u4ee5\u901a\u8fc7\u5728Filters\u4e2d\u6307\u5b9a\u6761\u4ef6\u6765\u4f7f\u7528deleteOne()\u65b9\u6cd5\uff0c\u8fd9\u4e0e\u76f4\u63a5\u5728Mongo\u4e2d\u64cd\u4f5c\u76f8\u540c\u3002
\n\u5bf9\u4e8e\u654f\u9510\u7684\u89c2\u5bdf\u8005\u6765\u8bf4\uff0c\u53ef\u80fd\u5df2\u7ecf\u6ce8\u610f\u5230\u8fd8\u63d0\u4f9b\u4e86deleteMany()\u65b9\u6cd5\u3002<\/p>\n
\/\/\u6761\u4ef6\u306b\u4e00\u81f4\u3059\u308b\u30c9\u30ad\u30e5\u30e1\u30f3\u30c81\u4ef6\u524a\u9664<\/span>\r\ncoll<\/span>.<\/span>deleteOne<\/span>(<\/span>Filters<\/span>.<\/span>eq<\/span>(<\/span>\"name\"<\/span>,<\/span> \"test\"<\/span>));<\/span>\r\n\r\n\/\/\u6761\u4ef6\u306b\u4e00\u81f4\u3059\u308b\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u5168\u4ef6\u524a\u9664<\/span>\r\ncoll<\/span>.<\/span>deleteMany<\/span>(<\/span>Filters<\/span>.<\/span>eq<\/span>(<\/span>\"name\"<\/span>,<\/span> \"test\"<\/span>));<\/span>\r\n<\/code><\/pre>\n
\u5220\u9664\u6536\u85cf\u53ef\u4ee5\u4f7f\u7528drop()\u65b9\u6cd5\u6765\u5220\u9664\u6574\u4e2a\u96c6\u5408\u3002
\n\u7531\u4e8e\u5b83\u88ab\u79f0\u4e3aDROP DATABASE\uff0c\u6240\u4ee5SQL\u7528\u6237\u5e94\u8be5\u5f88\u719f\u6089\u3002
\n\u4e2a\u4eba\u800c\u8a00\uff0c\u6211\u89c9\u5f97\u4eceMongoDatabase\u4e2d\u53ef\u4ee5\u50cfdropCollection(“collection_name”)\u8fd9\u6837\u5220\u9664\u96c6\u5408\u66f4\u5bb9\u6613\u7406\u89e3\uff0c\u4f46\u597d\u50cf\u6ca1\u6709\u8fd9\u6837\u7684\u65b9\u6cd51\u3002<\/p>\n
coll<\/span>.<\/span>drop<\/span>();<\/span>\r\n<\/code><\/pre>\n
\u5220\u9664\u8fde\u63a5\u30c7\u30fc\u30bf\u306e\u64cd\u4f5c\u304c\u7d42\u308f\u3063\u305f\u3089\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u3092\u30af\u30ed\u30fc\u30ba\u3057\u307e\u3059\u3002<\/p>\n
cliant<\/span>.<\/span>close<\/span>();<\/span>\r\n<\/code><\/pre>\n
\u53e6\u5916\uff0c\u901a\u8fc7\u4f7f\u7528try-with-Resources\uff0c\u60a8\u4e5f\u53ef\u4ee5\u7701\u7565MongoClient\u7684\u5173\u95ed\u5904\u7406\u3002<\/p>\n
try<\/span> (<\/span>MongoClient<\/span> cliant<\/span> =<\/span> new<\/span> MongoCliant<\/span>(<\/span>addressArr<\/span>))<\/span> {<\/span>\r\n    \r\n\u3000\u3000<\/span>\/\/DB\u3092\u8272\u3005\u64cd\u4f5c<\/span>\r\n\u3000\u3000<\/span>\/\/\u672c\u5f53\u306f\u6700\u5f8c\u306bcliant.close()\u3068\u3057\u306a\u3051\u308c\u3070\u3044\u3051\u306a\u3044\u3068\u3053\u308d\u3092\u30b9\u30ad\u30c3\u30d7\u3067\u304d\u308b<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u8bf7\u70b9\u51fb\u6b64\u5904\u67e5\u770b\u6709\u5173try-with-Resources\u8bed\u6cd5\u7684\u8be6\u7ec6\u4fe1\u606f\u2193
\nhttps:\/\/docs.oracle.com\/javase\/jp\/7\/technotes\/guides\/language\/try-with-resources.html<\/p>\n
\u524d\u8a00\u5c3e\u58f0\u6211\u628a\u57fa\u672c\u7684\u5904\u7406\u8fc7\u7a0b\u90fd\u5199\u51fa\u6765\u4e86\u3002MongoDB\u662f\u4e00\u79cdNoSQL\u6570\u636e\u5e93\uff0c\u5982\u679c\u4f60\u5df2\u7ecf\u719f\u6089\u4e86\u7ed3\u6784\u4e25\u8c28\u7684MySQL\u6216\u8005postgres\u7b49\u6570\u636e\u5e93\uff0c\u90a3\u4e48\u53ef\u80fd\u9700\u8981\u4e00\u70b9\u65f6\u95f4\u9002\u5e94MongoDB\u7684\u4e00\u4e9b\u72ec\u7279\u4e4b\u5904\u3002\u4e0d\u8fc7\uff0c\u5982\u679c\u6309\u7167\u987a\u5e8f\u53bb\u7406\u89e3\u9a71\u52a8\u7a0b\u5e8f\u672c\u8eab\uff0c\u5e76\u4e14\u5bf9\u4e8eCRUD\uff08\u521b\u5efa\u3001\u8bfb\u53d6\u3001\u66f4\u65b0\u3001\u5220\u9664\uff09\u90e8\u5206\uff0c\u56e0\u4e3a\u4e0eMongo\u7684\u5ba2\u6237\u7aef\u7f16\u5199\u65b9\u5f0f\u975e\u5e38\u76f8\u4f3c\uff0c\u6240\u4ee5\u5982\u679c\u4f60\u719f\u6089Java\u7684\u8bdd\uff0c\u5e94\u8be5\u4f1a\u6bd4\u8f83\u5bb9\u6613\u4e0a\u624b\u3002
\n\u6b64\u5916\uff0c\u8fd8\u6709\u5f88\u591a\u5176\u4ed6\u7684API\u53ef\u4f9b\u4f7f\u7528\uff0c\u6240\u4ee5\u5982\u679c\u60f3\u77e5\u9053\u81ea\u5df1\u60f3\u8981\u505a\u7684\u4e8b\u60c5\u80fd\u5426\u5b9e\u73b0\uff0c\u5efa\u8bae\u67e5\u9605\u5b98\u65b9\u6587\u6863\u7b49\u8d44\u6599\u3002\u7ed3\u675f\u3002<\/p>\n
\u6709\u4e00\u4e2a\u540d\u4e3aMongoDatabase.drop()\u7684\u65b9\u6cd5\u53ef\u4ee5\u5220\u9664\u6570\u636e\u5e93\u672c\u8eab\uff0c\u8bf7\u6ce8\u610f\u907f\u514d\u8bef\u7528\u3002<\/section>\n","protected":false},"excerpt":{"rendered":"
Java MongoDB\u9a71\u52a8\u7a0b\u5e8f\u662f\u4ec0\u4e48\u3002  \u8fd9\u662f\u4e00\u4e2a\u7528\u4e8e\u8bbf\u95ee\u6307\u5b9aMongoDB\u5e76\u5904\u7406\u5176\u6570\u636e\u7684Java […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-29717","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"\n\u4f7f\u7528Java MongoDB\u9a71\u52a8\u7a0b\u5e8f\u8fde\u63a5\u5230MongoDB\u5e76\u6267\u884c\u6587\u6863\u7684CRUD\u64cd\u4f5c - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8e\u4f7f\u7528Java MongoDB\u9a71\u52a8\u7a0b\u5e8f\u8fde\u63a5\u5230MongoDB\u5e76\u6267\u884c\u6587\u6863\u7684CRUD\u64cd\u4f5c\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-mongodb\u9a71\u52a8\u7a0b\u5e8f\u8fde\u63a5\u5230mongodb\u5e76\u6267\u884c\u6587\u6863\u7684crud\u64cd\u4f5c\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u4f7f\u7528Java MongoDB\u9a71\u52a8\u7a0b\u5e8f\u8fde\u63a5\u5230MongoDB\u5e76\u6267\u884c\u6587\u6863\u7684CRUD\u64cd\u4f5c\" \/>\n<meta property=\"og:description\" content=\"\u5173\u4e8e\u4f7f\u7528Java MongoDB\u9a71\u52a8\u7a0b\u5e8f\u8fde\u63a5\u5230MongoDB\u5e76\u6267\u884c\u6587\u6863\u7684CRUD\u64cd\u4f5c\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528java-mongodb\u9a71\u52a8\u7a0b\u5e8f\u8fde\u63a5\u5230mongodb\u5e76\u6267\u884c\u6587\u6863\u7684crud\u64cd\u4f5c\u3002\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2022-12-17T22:02:16+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-12T07:32:42+00:00\" \/>\n<meta name=\"author\" content=\"\u6e05, \u5b87\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u6e05, \u5b87\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8java-mongodb%e9%a9%b1%e5%8a%a8%e7%a8%8b%e5%ba%8f%e8%bf%9e%e6%8e%a5%e5%88%b0mongodb%e5%b9%b6%e6%89%a7%e8%a1%8c%e6%96%87%e6%a1%a3%e7%9a%84crud%e6%93%8d%e4%bd%9c%e3%80%82\/\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8java-mongodb%e9%a9%b1%e5%8a%a8%e7%a8%8b%e5%ba%8f%e8%bf%9e%e6%8e%a5%e5%88%b0mongodb%e5%b9%b6%e6%89%a7%e8%a1%8c%e6%96%87%e6%a1%a3%e7%9a%84crud%e6%93%8d%e4%bd%9c%e3%80%82\/\",\"name\":\"\u4f7f\u7528Java MongoDB\u9a71\u52a8\u7a0b\u5e8f\u8fde\u63a5\u5230MongoDB\u5e76\u6267\u884c\u6587\u6863\u7684CRUD\u64cd\u4f5c - 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