{"id":4057,"date":"2025-05-30T11:53:13","date_gmt":"2025-06-05T04:04:12","guid":{"rendered":"https:\/\/badgameshow.com\/steven\/?p=4057"},"modified":"2025-06-05T11:53:13","modified_gmt":"2025-06-05T04:04:12","slug":"%e5%ad%b8%e7%bf%92%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8swift%e4%b8%ad%e7%9a%84%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b7%a8%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/badgameshow.com\/steven\/swift\/%e5%ad%b8%e7%bf%92%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8swift%e4%b8%ad%e7%9a%84%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b7%a8%e7%a8%8b\/","title":{"rendered":"\u5168\u9762\u5b78\u7fd2 Swift \u4e2d\u7684\u6578\u64da\u5eab\u7de8\u7a0b\uff1aSQLite\u3001CoreData \u8207 FMDB \u7684\u6700\u65b0\u5be6\u4f5c\u6307\u5357"},"content":{"rendered":"

“`html
\n<\/p>\n

\u5168\u9762\u5b78\u7fd2 Swift \u4e2d\u7684\u6578\u64da\u5eab\u7de8\u7a0b\uff1aSQLite\u3001CoreData \u8207 FMDB \u7684\u6700\u65b0\u5be6\u4f5c\u6307\u5357<\/h1>\n

Swift \u662f\u4e00\u7a2e\u5f37\u5927\u4e14\u73fe\u4ee3\u7684\u7a0b\u5f0f\u8a9e\u8a00\uff0c\u5ee3\u6cdb\u7528\u65bc\u958b\u767c iOS \u548c macOS \u61c9\u7528\u7a0b\u5e8f\u3002\u5728\u9019\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u5011\u5c07\u6df1\u5165\u63a2\u8a0e\u5728 Swift \u4e2d\u9032\u884c\u6578\u64da\u5eab\u7de8\u7a0b\u7684\u65b9\u6cd5\uff0c\u7279\u5225\u662f\u5982\u4f55\u4f7f\u7528 SQLite\u3001CoreData \u548c FMDB \u4f86\u5be6\u73fe\u6578\u64da\u7684\u5b58\u5132\u3001\u67e5\u8a62\u3001\u66f4\u65b0\u548c\u522a\u9664\u64cd\u4f5c\u3002\u4ee5\u4e0b\u5167\u5bb9\u5df2\u66f4\u65b0\u70ba2025\u5e74\u7684\u6700\u4f73\u5be6\u8e10\u548c\u6700\u65b0\u8a9e\u6cd5\u3002<\/p>\n

\u4f7f\u7528 SQLite \u6578\u64da\u5eab\u9032\u884c\u6578\u64da\u64cd\u4f5c<\/h2>\n

SQLite \u662f\u4e00\u7a2e\u8f15\u91cf\u7d1a\u7684\u958b\u6e90\u6578\u64da\u5eab\uff0c\u9069\u5408\u5728 iOS \u548c macOS \u5e73\u53f0\u4e0a\u4f7f\u7528\u3002\u5b83\u63d0\u4f9b\u4e86\u7c21\u55ae\u7684 API \u4f86\u57f7\u884c\u6578\u64da\u7684 CRUD \u64cd\u4f5c\u3002<\/p>\n

\u5c0e\u5165 SQLite \u6846\u67b6<\/h3>\n
\nimport SQLite\n<\/pre>\n
\u5275\u5efa SQLite \u6578\u64da\u5eab<\/h3>\n
\nlet db = try Connection(\"myDatabase.sqlite3\") \/\/ \u66f4\u65b0\u70ba\u6700\u65b0\u8a9e\u6cd5\n<\/pre>\n
\u5275\u5efa\u6578\u64da\u8868<\/h3>\n
\nlet table = Table(\"users\") \/\/ \u5b9a\u7fa9\u8868\u540d\nlet id = Expression(\"id\") \/\/ \u5b9a\u7fa9\u6b04\u4f4d\nlet name = Expression(\"name\")\nlet email = Expression(\"email\")\n\ntry db.run(table.create { t in\n    t.column(id, primaryKey: true)\n    t.column(name)\n    t.column(email)\n})\n<\/pre>\n
\u63d2\u5165\u6578\u64da<\/h3>\n
\nlet insert = table.insert(name <- \"John\", email <- \"john@example.com\")\ntry db.run(insert)\n<\/pre>\n
\u67e5\u8a62\u6578\u64da<\/h3>\n
\nlet query = table.select(name, email).filter(name == \"John\")\nfor row in try db.prepare(query) {\n    let name = row[name]\n    let email = row[email]\n    print(\"name: \\(name), email: \\(email)\")\n}\n<\/pre>\n
\u66f4\u65b0\u6578\u64da<\/h3>\n
\nlet update = table.update(email <- \"john_updated@example.com\").filter(name == \"John\")\ntry db.run(update)\n<\/pre>\n
\u522a\u9664\u6578\u64da<\/h3>\n
\nlet delete = table.delete().filter(name == \"John\")\ntry db.run(delete)\n<\/pre>\n
\u4f7f\u7528 CoreData \u9032\u884c\u6578\u64da\u64cd\u4f5c<\/h2>\n
CoreData \u662f Apple \u63d0\u4f9b\u7684\u6846\u67b6\uff0c\u7528\u65bc\u5728 iOS \u548c macOS \u61c9\u7528\u4e2d\u6301\u4e45\u5316\u6578\u64da\u3002\u5b83\u63d0\u4f9b\u4e86\u7c21\u4fbf\u7684\u65b9\u5f0f\u4f86\u7ba1\u7406\u6578\u64da\u6a21\u578b\u3002<\/p>\n
\u5c0e\u5165 CoreData \u6846\u67b6<\/h3>\n
\nimport CoreData\n<\/pre>\n
\u8a2d\u7f6e CoreData \u74b0\u5883<\/h3>\n
\nlet appDelegate = UIApplication.shared.delegate as! AppDelegate\nlet managedContext = appDelegate.persistentContainer.viewContext\n<\/pre>\n
\u5275\u5efa\u6578\u64da\u5be6\u9ad4<\/h3>\n
\nlet entity = NSEntityDescription.entity(forEntityName: \"User\", in: managedContext)!\nlet user = NSManagedObject(entity: entity, insertInto: managedContext)\nuser.setValue(\"John\", forKey: \"name\")\nuser.setValue(\"john@example.com\", forKey: \"email\")\n\ndo {\n    try managedContext.save()\n} catch {\n    print(\"Failed saving\")\n}\n<\/pre>\n
\u67e5\u8a62\u6578\u64da<\/h3>\n
\nlet fetchRequest = NSFetchRequest(entityName: \"User\")\nfetchRequest.predicate = NSPredicate(format: \"name == %@\", \"John\")\n\ndo {\n    let users = try managedContext.fetch(fetchRequest)\n    for user in users {\n        let name = user.value(forKey: \"name\") as! String\n        let email = user.value(forKey: \"email\") as! String\n        print(\"name: \\(name), email: \\(email)\")\n    }\n} catch {\n    print(\"Failed fetching\")\n}\n<\/pre>\n
\u66f4\u65b0\u6578\u64da<\/h3>\n
\nfor user in users {\n    user.setValue(\"john_updated@example.com\", forKey: \"email\")\n}\ntry managedContext.save()\n<\/pre>\n
\u522a\u9664\u6578\u64da<\/h3>\n
for user in users {
\n    managedContext.delete(user)
\n}
\ntry managedContext.save()<\/p>\n
\u4f7f\u7528 FMDB \u64cd\u4f5c SQLite \u6578\u64da\u5eab<\/h2>\n
FMDB \u662f\u4e00\u500b\u7528\u65bc iOS \u548c macOS \u7684 SQLite \u5c01\u88dd\u5eab\uff0c\u4f7f\u7528\u8d77\u4f86\u5341\u5206\u65b9\u4fbf\u3002<\/p>\n
\u5c0e\u5165 FMDB \u6846\u67b6<\/h3>\n
\nimport FMDB\n<\/pre>\n
\u5275\u5efa FMDB \u6578\u64da\u5eab<\/h3>\n
\nlet db = FMDatabase(path: \"myDatabase.sqlite\")\n<\/pre>\n
\u5275\u5efa\u6578\u64da\u8868<\/h3>\n
\nlet sql = \"CREATE TABLE IF NOT EXISTS users (id INTEGER PRIMARY KEY, name TEXT, email TEXT)\"\nif db.open() {\n    if db.executeStatements(sql) {\n        print(\"Table created.\")\n    } else {\n        print(\"Error: \\(db.lastErrorMessage())\")\n    }\n    db.close()\n} else {\n    print(\"Error: \\(db.lastErrorMessage())\")\n}\n<\/pre>\n
\u63d2\u5165\u6578\u64da<\/h3>\n
\nlet sql = \"INSERT INTO users (name, email) VALUES (?, ?)\"\nif db.open() {\n    if db.executeUpdate(sql, withArgumentsIn: [\"John\", \"john@example.com\"]) {\n        print(\"Row inserted.\")\n    } else {\n        print(\"Error: \\(db.lastErrorMessage())\")\n    }\n    db.close()\n}\n<\/pre>\n
\u67e5\u8a62\u6578\u64da<\/h3>\n
\nlet sql = \"SELECT name, email FROM users WHERE name = ?\"\nif db.open() {\n    let rs = db.executeQuery(sql, withArgumentsIn: [\"John\"])\n    while rs?.next() == true {\n        let name = rs?.string(forColumn: \"name\")\n        let email = rs?.string(forColumn: \"email\")\n        print(\"name: \\(name), email: \\(email)\")\n    }\n    db.close()\n}\n<\/pre>\n
\u66f4\u65b0\u6578\u64da<\/h3>\n
\nlet sql = \"UPDATE users SET email = ? WHERE name = ?\"\nif db.open() {\n    if db.executeUpdate(sql, withArgumentsIn: [\"john_updated@example.com\", \"John\"]) {\n        print(\"Row updated.\")\n    } else {\n        print(\"Error: \\(db.lastErrorMessage())\")\n    }\n    db.close()\n}\n<\/pre>\n
\u522a\u9664\u6578\u64da<\/h3>\n
\nlet sql = \"DELETE FROM users WHERE name = ?\"\nif db.open() {\n    if db.executeUpdate(sql, withArgumentsIn: [\"John\"]) {\n        print(\"Row deleted.\")\n    } else {\n        print(\"Error: \\(db.lastErrorMessage())\")\n    }\n    db.close()\n}\n<\/pre>\n
\u5e38\u898b\u554f\u984c\u89e3\u7b54 (Q&A)<\/h2>\n
Q1: \u5728 Swift \u4e2d\u4f7f\u7528 SQLite \u6642\uff0c\u5982\u4f55\u8655\u7406\u6578\u64da\u5eab\u932f\u8aa4\uff1f<\/h3>\n
A1: \u5728\u64cd\u4f5c\u6578\u64da\u5eab\u6642\uff0c\u4f7f\u7528 do-catch \u8a9e\u53e5\u4f86\u6355\u6349\u548c\u8655\u7406\u932f\u8aa4\u662f\u6700\u4f73\u5be6\u8e10\uff0c\u4e26\u4e14\u61c9\u8a72\u63d0\u4f9b\u76f8\u61c9\u7684\u932f\u8aa4\u8a0a\u606f\u4ee5\u4fbf\u8abf\u8a66\u3002<\/p>\n
Q2: CoreData \u548c SQLite \u6709\u4ec0\u9ebc\u4e0d\u540c\u4e4b\u8655\uff1f<\/h3>\n
A2: CoreData \u662f\u4e00\u500b\u9ad8\u968e\u6846\u67b6\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e00\u500b\u5c0d\u8c61\u5716\u7ba1\u7406\u5668\uff0c\u800c SQLite \u662f\u4e00\u500b\u4f4e\u968e\u7684\u6578\u64da\u5eab\u5f15\u64ce\u3002CoreData \u53ef\u4ee5\u81ea\u52d5\u8655\u7406\u5c0d\u8c61\u7684\u8b8a\u66f4\u8ffd\u8e64\u3001\u6578\u64da\u6301\u4e45\u5316\u548c\u67e5\u8a62\uff0c\u9069\u5408\u7528\u65bc\u8907\u96dc\u7684\u61c9\u7528\u5834\u666f\u3002<\/p>\n
Q3: \u5982\u4f55\u9078\u64c7\u5728 Swift \u4e2d\u4f7f\u7528\u54ea\u7a2e\u6578\u64da\u5eab\uff1f<\/h3>\n
A3: \u5982\u679c\u9700\u8981\u8f15\u91cf\u7d1a\u7684\u6578\u64da\u5b58\u5132\uff0c\u53ef\u4ee5\u9078\u64c7 SQLite\uff1b\u5982\u679c\u9700\u8981\u66f4\u8c50\u5bcc\u7684\u6a21\u578b\u7ba1\u7406\u548c\u95dc\u806f\uff0c\u5247\u53ef\u4ee5\u8003\u616e CoreData\uff1b\u5982\u679c\u60f3\u8981\u7c21\u5316 SQLite \u7684\u64cd\u4f5c\uff0c\u53ef\u4ee5\u9078\u64c7 FMDB\u3002<\/p>\n
```
\n---<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6587\u7ae0\u6458\u8981\uff1a\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528Swift\u4e2d\u7684\u6578\u64da\u5eab\u7de8\u7a0b\uff0c\u5305\u62ec\u5982\u4f55\u4f7f\u7528SQLite\u6578\u64da\u5eab\u9032\u884c\u6578\u64da\u5b58\u5132\u3001\u67e5\u8a62\u3001\u66f4\u65b0\u3001\u522a\u9664\u7b49\u64cd\u4f5c\uff0c\u5982\u4f55\u4f7f\u7528CoreData\u6846\u67b6\u9032\u884c\u6578\u64da\u5b58\u5132\u3001\u67e5\u8a62\u3001\u66f4\u65b0\u3001\u522a\u9664\u7b49\u64cd\u4f5c\uff0c\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528FMDB\u6846\u67b6\u9032\u884cSQLite\u6578\u64da\u5eab\u64cd\u4f5c\u7b49\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[174,5],"tags":[173,9],"class_list":["post-4057","post","type-post","status-publish","format-standard","hentry","category-ios","category-swift","tag-ios","tag-swift"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-13r","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4057","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/comments?post=4057"}],"version-history":[{"count":1,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4057\/revisions"}],"predecessor-version":[{"id":4058,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/4057\/revisions\/4058"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=4057"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=4057"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=4057"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}