{"id":2467,"date":"2025-03-07T23:07:09","date_gmt":"2025-03-07T15:07:09","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=2467"},"modified":"2025-03-09T13:20:49","modified_gmt":"2025-03-09T05:20:49","slug":"mongodb-java","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/03\/07\/mongodb-java\/","title":{"rendered":"MongoDB Java"},"content":{"rendered":"\n<p>MongoDB \u63d0\u4f9b\u4e86 Java \u9a71\u52a8\u7a0b\u5e8f\uff0c\u4f7f Java \u5f00\u53d1\u8005\u80fd\u591f\u65b9\u4fbf\u5730\u4e0e MongoDB \u6570\u636e\u5e93\u8fdb\u884c\u4ea4\u4e92\u3002\u4f7f\u7528 MongoDB Java \u9a71\u52a8\u7a0b\u5e8f\uff0c\u4f60\u53ef\u4ee5\u8f7b\u677e\u6267\u884c CRUD \u64cd\u4f5c\u3001\u5904\u7406\u805a\u5408\u67e5\u8be2\u3001\u4e8b\u52a1\u7b49\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>1. MongoDB Java \u9a71\u52a8\u7a0b\u5e8f\u7b80\u4ecb<\/strong><\/h3>\n\n\n\n<p>MongoDB \u7684 Java \u9a71\u52a8\u7a0b\u5e8f\u662f\u4e0e MongoDB \u6570\u636e\u5e93\u4ea4\u4e92\u7684\u6807\u51c6\u5e93\uff0c\u5b83\u652f\u6301 MongoDB \u7684\u5404\u79cd\u529f\u80fd\uff0c\u5305\u62ec\u4f46\u4e0d\u9650\u4e8e CRUD \u64cd\u4f5c\u3001\u7d22\u5f15\u3001\u805a\u5408\u3001\u4e8b\u52a1\u3001\u8fde\u63a5\u6c60\u7b49\u3002<\/p>\n\n\n\n<p>MongoDB Java \u9a71\u52a8\u7a0b\u5e8f\u7684\u7248\u672c\u7ba1\u7406\u6bd4\u8f83\u4e25\u683c\uff0c\u901a\u5e38\u4f1a\u6709\u4e0e MongoDB \u670d\u52a1\u5668\u517c\u5bb9\u7684\u7248\u672c\u3002\u4f8b\u5982\uff0c<code>mongodb-driver-sync<\/code> \u662f\u7528\u4e8e\u540c\u6b65\u64cd\u4f5c\u7684\u9a71\u52a8\u7a0b\u5e8f\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u5b98\u65b9 Maven \u4f9d\u8d56<\/strong><\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;dependency&gt;\n    &lt;groupId&gt;org.mongodb&lt;\/groupId&gt;\n    &lt;artifactId&gt;mongodb-driver-sync&lt;\/artifactId&gt;\n    &lt;version&gt;4.7.0&lt;\/version&gt;  &lt;!-- \u786e\u4fdd\u4f7f\u7528\u517c\u5bb9\u7684\u7248\u672c --&gt;\n&lt;\/dependency&gt;<\/code><\/pre>\n\n\n\n<p>\u5bf9\u4e8e\u5f02\u6b65\u64cd\u4f5c\uff0cMongoDB \u8fd8\u63d0\u4f9b\u4e86 <code>mongodb-driver-async<\/code>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2. MongoDB Java \u9a71\u52a8\u7a0b\u5e8f\u7684\u57fa\u672c\u914d\u7f6e<\/strong><\/h3>\n\n\n\n<p>\u9996\u5148\uff0c\u4f60\u9700\u8981\u521b\u5efa\u4e00\u4e2a <code>MongoClient<\/code> \u5b9e\u4f8b\uff0c\u6765\u8fde\u63a5 MongoDB \u6570\u636e\u5e93\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u5efa\u7acb\u4e0e MongoDB \u7684\u8fde\u63a5<\/strong><\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>import com.mongodb.MongoClient;\nimport com.mongodb.MongoClientURI;\n\npublic class MongoDBExample {\n    public static void main(String&#91;] args) {\n        \/\/ \u4f7f\u7528 MongoDB URI \u6765\u8fde\u63a5\n        MongoClientURI uri = new MongoClientURI(\"mongodb:\/\/localhost:27017\");\n        MongoClient mongoClient = new MongoClient(uri);\n\n        \/\/ \u4f7f\u7528\u6570\u636e\u5e93\n        mongoClient.getDatabase(\"test\");\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u901a\u8fc7 <code>MongoClientURI<\/code> \u53ef\u4ee5\u914d\u7f6e\u8fde\u63a5\u5230 MongoDB \u5b9e\u4f8b\u7684\u8fde\u63a5\u5b57\u7b26\u4e32\uff0c\u652f\u6301\u6307\u5b9a\u4e3b\u673a\u3001\u7aef\u53e3\u3001\u8ba4\u8bc1\u4fe1\u606f\u3001\u8fde\u63a5\u6c60\u7b49\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3. \u8fde\u63a5 MongoDB \u6570\u636e\u5e93\u548c\u96c6\u5408<\/strong><\/h3>\n\n\n\n<p>\u4e00\u65e6\u4f60\u521b\u5efa\u4e86 MongoDB \u5ba2\u6237\u7aef\uff0c\u4f60\u5c31\u53ef\u4ee5\u8fde\u63a5\u5230\u6307\u5b9a\u7684\u6570\u636e\u5e93\u548c\u96c6\u5408\u8fdb\u884c\u64cd\u4f5c\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u8fde\u63a5\u5230\u6570\u636e\u5e93\u548c\u96c6\u5408<\/strong><\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>import com.mongodb.client.MongoCollection;\nimport com.mongodb.client.MongoDatabase;\nimport org.bson.Document;\n\npublic class MongoDBExample {\n    public static void main(String&#91;] args) {\n        MongoClient client = new MongoClient(\"localhost\", 27017);  \/\/ \u521b\u5efa MongoClient \u5b9e\u4f8b\n        MongoDatabase database = client.getDatabase(\"test\");  \/\/ \u8fde\u63a5\u5230 test \u6570\u636e\u5e93\n        MongoCollection&lt;Document&gt; collection = database.getCollection(\"users\");  \/\/ \u83b7\u53d6 users \u96c6\u5408\n\n        \/\/ \u6267\u884c\u67e5\u8be2\u64cd\u4f5c\n        Document document = collection.find().first();\n        System.out.println(document.toJson());\n    }\n}<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>getDatabase(\"test\")<\/code> \u7528\u4e8e\u83b7\u53d6\u6307\u5b9a\u540d\u79f0\u7684\u6570\u636e\u5e93\u3002<\/li>\n\n\n\n<li><code>getCollection(\"users\")<\/code> \u83b7\u53d6\u6307\u5b9a\u540d\u79f0\u7684\u96c6\u5408\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>4. CRUD \u64cd\u4f5c<\/strong><\/h3>\n\n\n\n<p>MongoDB Java \u9a71\u52a8\u7a0b\u5e8f\u63d0\u4f9b\u4e86\u65b9\u6cd5\u6765\u6267\u884c\u5e38\u89c1\u7684 CRUD\uff08\u521b\u5efa\u3001\u8bfb\u53d6\u3001\u66f4\u65b0\u3001\u5220\u9664\uff09\u64cd\u4f5c\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u63d2\u5165\u6570\u636e<\/strong><\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>Document document = new Document(\"name\", \"Alice\")\n                        .append(\"age\", 25)\n                        .append(\"city\", \"New York\");\n\ncollection.insertOne(document);<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u67e5\u8be2\u6570\u636e<\/strong><\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>Document myDoc = collection.find(eq(\"name\", \"Alice\")).first();\nSystem.out.println(myDoc.toJson());<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u66f4\u65b0\u6570\u636e<\/strong><\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>collection.updateOne(eq(\"name\", \"Alice\"), \n                     new Document(\"$set\", new Document(\"age\", 26)));<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u5220\u9664\u6570\u636e<\/strong><\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>collection.deleteOne(eq(\"name\", \"Alice\"));<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u67e5\u8be2\u591a\u4e2a\u6587\u6863<\/strong><\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>FindIterable&lt;Document&gt; docs = collection.find(eq(\"city\", \"New York\"));\nfor (Document doc : docs) {\n    System.out.println(doc.toJson());\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>5. \u805a\u5408\u67e5\u8be2<\/strong><\/h3>\n\n\n\n<p>MongoDB \u7684\u805a\u5408\u6846\u67b6\u5728 Java \u4e2d\u4e5f\u53ef\u4ee5\u4f7f\u7528\u3002\u901a\u8fc7 <code>aggregate()<\/code> \u65b9\u6cd5\u53ef\u4ee5\u8fdb\u884c\u590d\u6742\u7684\u67e5\u8be2\u548c\u6570\u636e\u5904\u7406\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u793a\u4f8b\uff1a\u4f7f\u7528\u805a\u5408\u67e5\u8be2\u8ba1\u7b97\u5e74\u9f84\u7684\u5e73\u5747\u503c<\/strong><\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>List&lt;Bson&gt; pipeline = Arrays.asList(\n    Aggregates.match(Filters.gte(\"age\", 20)),\n    Aggregates.group(null, Accumulators.avg(\"avgAge\", \"$age\"))\n);\n\nMongoIterable&lt;Document&gt; result = collection.aggregate(pipeline);\nfor (Document doc : result) {\n    System.out.println(doc.toJson());\n}<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u805a\u5408\u7ba1\u9053\u64cd\u4f5c\u7b26<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>match<\/code>\uff1a\u7c7b\u4f3c SQL \u4e2d\u7684 WHERE\u3002<\/li>\n\n\n\n<li><code>group<\/code>\uff1a\u7c7b\u4f3c SQL \u4e2d\u7684 GROUP BY\u3002<\/li>\n\n\n\n<li><code>project<\/code>\uff1a\u7528\u4e8e\u6295\u5f71\uff08\u9009\u62e9\u5b57\u6bb5\uff09\u3002<\/li>\n\n\n\n<li><code>sort<\/code>\uff1a\u7528\u4e8e\u6392\u5e8f\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>6. \u4e8b\u52a1\u652f\u6301<\/strong><\/h3>\n\n\n\n<p>MongoDB 4.0 \u5f15\u5165\u4e86\u591a\u6587\u6863\u4e8b\u52a1\uff0cMongoDB Java \u9a71\u52a8\u7a0b\u5e8f\u4e5f\u652f\u6301\u8be5\u529f\u80fd\u3002\u4f60\u53ef\u4ee5\u5728\u4e00\u4e2a\u4e8b\u52a1\u4e2d\u6267\u884c\u591a\u4e2a\u64cd\u4f5c\uff0c\u4ee5\u786e\u4fdd\u4e8b\u52a1\u7684\u4e00\u81f4\u6027\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u4e8b\u52a1\u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>import com.mongodb.client.ClientSession;\nimport com.mongodb.client.TransactionBody;\n\nClientSession session = mongoClient.startSession();\n\nsession.startTransaction();\ntry {\n    MongoCollection&lt;Document&gt; collection = database.getCollection(\"users\");\n    collection.insertOne(session, new Document(\"name\", \"Bob\").append(\"age\", 30));\n\n    session.commitTransaction();  \/\/ \u63d0\u4ea4\u4e8b\u52a1\n} catch (Exception e) {\n    session.abortTransaction();  \/\/ \u51fa\u9519\u65f6\u56de\u6eda\u4e8b\u52a1\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>7. \u5f02\u6b65\u64cd\u4f5c<\/strong><\/h3>\n\n\n\n<p>MongoDB Java \u9a71\u52a8\u7a0b\u5e8f\u8fd8\u652f\u6301\u5f02\u6b65\u64cd\u4f5c\uff0c\u5141\u8bb8\u4f60\u6267\u884c\u975e\u963b\u585e\u7684\u6570\u636e\u5e93\u64cd\u4f5c\u3002\u4f7f\u7528 <code>MongoClient<\/code> \u7684\u5f02\u6b65\u7248\u672c <code>MongoClientAsync<\/code>\uff0c\u53ef\u4ee5\u6267\u884c\u5f02\u6b65\u67e5\u8be2\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u5f02\u6b65\u67e5\u8be2\u793a\u4f8b\uff1a<\/strong><\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>import com.mongodb.async.client.MongoClients;\nimport com.mongodb.async.client.MongoCollection;\nimport org.bson.Document;\n\npublic class AsyncMongoDBExample {\n    public static void main(String&#91;] args) {\n        MongoClient client = MongoClients.create(\"mongodb:\/\/localhost:27017\");\n        MongoDatabase database = client.getDatabase(\"test\");\n        MongoCollection&lt;Document&gt; collection = database.getCollection(\"users\");\n\n        collection.find().first((document, throwable) -&gt; {\n            if (throwable != null) {\n                throwable.printStackTrace();\n            } else {\n                System.out.println(document.toJson());\n            }\n        });\n    }\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>8. MongoDB \u8fde\u63a5\u6c60<\/strong><\/h3>\n\n\n\n<p>MongoDB Java \u9a71\u52a8\u7a0b\u5e8f\u652f\u6301\u8fde\u63a5\u6c60\uff0c\u5b83\u53ef\u4ee5\u6709\u6548\u7ba1\u7406\u4e0e\u6570\u636e\u5e93\u7684\u8fde\u63a5\uff0c\u51cf\u5c11\u6bcf\u6b21\u67e5\u8be2\u65f6\u7684\u8fde\u63a5\u5f00\u9500\u3002\u8fde\u63a5\u6c60\u7684\u5927\u5c0f\u53ef\u4ee5\u6839\u636e\u8d1f\u8f7d\u8fdb\u884c\u914d\u7f6e\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>MongoClientOptions options = MongoClientOptions.builder()\n    .connectionsPerHost(10)\n    .build();\nMongoClient client = new MongoClient(new ServerAddress(\"localhost\", 27017), options);<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>9. \u5e38\u7528\u7684 Bson \u64cd\u4f5c\u7b26<\/strong><\/h3>\n\n\n\n<p>\u5728 MongoDB Java \u9a71\u52a8\u7a0b\u5e8f\u4e2d\uff0cBson \u64cd\u4f5c\u7b26\u7528\u4e8e\u521b\u5efa\u67e5\u8be2\u6761\u4ef6\u3001\u66f4\u65b0\u64cd\u4f5c\u7b49\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>\u5e38\u89c1\u64cd\u4f5c\u7b26\uff1a<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>eq<\/code>\uff1a\u7b49\u4e8e<\/li>\n\n\n\n<li><code>gt<\/code>\uff1a\u5927\u4e8e<\/li>\n\n\n\n<li><code>lt<\/code>\uff1a\u5c0f\u4e8e<\/li>\n\n\n\n<li><code>gte<\/code>\uff1a\u5927\u4e8e\u6216\u7b49\u4e8e<\/li>\n\n\n\n<li><code>lte<\/code>\uff1a\u5c0f\u4e8e\u6216\u7b49\u4e8e<\/li>\n\n\n\n<li><code>ne<\/code>\uff1a\u4e0d\u7b49\u4e8e<\/li>\n\n\n\n<li><code>in<\/code>\uff1a\u5728\u67d0\u4e2a\u8303\u56f4\u5185<\/li>\n\n\n\n<li><code>and<\/code>\uff1a\u591a\u4e2a\u6761\u4ef6\u7684 AND \u67e5\u8be2<\/li>\n\n\n\n<li><code>or<\/code>\uff1a\u591a\u4e2a\u6761\u4ef6\u7684 OR \u67e5\u8be2<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>import static com.mongodb.client.model.Filters.*;\n\ncollection.find(eq(\"age\", 25)); \/\/ age == 25\ncollection.find(gt(\"age\", 20)); \/\/ age &gt; 20<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u603b\u7ed3<\/strong><\/h3>\n\n\n\n<p>MongoDB Java \u9a71\u52a8\u7a0b\u5e8f\u4f7f\u5f97 Java \u5f00\u53d1\u8005\u80fd\u591f\u65b9\u4fbf\u5730\u4e0e MongoDB \u8fdb\u884c\u4ea4\u4e92\uff0c\u652f\u6301\u57fa\u672c\u7684 CRUD \u64cd\u4f5c\u3001\u805a\u5408\u67e5\u8be2\u3001\u4e8b\u52a1\u5904\u7406\u3001\u5f02\u6b65\u64cd\u4f5c\u7b49\u529f\u80fd\u3002\u901a\u8fc7\u8fd9\u4e9b\u529f\u80fd\uff0c\u4f60\u53ef\u4ee5\u5728 Java \u5e94\u7528\u4e2d\u7075\u6d3b\u3001\u9ad8\u6548\u5730\u7ba1\u7406\u548c\u5904\u7406 MongoDB \u6570\u636e\u3002\u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MongoDB \u63d0\u4f9b\u4e86 Java \u9a71\u52a8\u7a0b\u5e8f\uff0c\u4f7f Java \u5f00\u53d1\u8005\u80fd\u591f\u65b9\u4fbf\u5730\u4e0e MongoDB \u6570\u636e\u5e93\u8fdb\u884c\u4ea4\u4e92\u3002 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2557,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[77],"tags":[],"class_list":["post-2467","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mongodb"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2467","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=2467"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2467\/revisions"}],"predecessor-version":[{"id":2468,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2467\/revisions\/2468"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media\/2557"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=2467"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=2467"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=2467"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}