2024年10月03日 建站教程
在Swift语言中使用MySQL数据库实现数据导出，在Swift项目中引入相应的库文件。下面web建站小编给大家简单介绍一下具体实现代码！
具体实现代码如下：
let hostname = "localhost" // MySQL主机名
let username = "root" // MySQL用户名
let password = "password" // MySQL密码
let database = "mydatabase" // MySQL数据库名称
let mysql = MySQLDatabase(hostname: hostname, username: username, password: password, database: database)
let pool = EventLoopGroupConnectionPool(source: mysql, maxConnectionsPerEventLoop: 1, on: ... /* 选择EventLoop的方法 */)
defer { pool.shutdown() }
//数据导出
func exportData(toFile fileURL: URL) throws {
let query = "SELECT * FROM users"
let statement = MySQLStatement(query: query)
let result = try statement.executeWithOutput(on: pool)
var csvData = "First Name,Last Name
"
for row in result {
let firstName = row["firstName"]?.string ?? ""
let lastName = row["lastName"]?.string ?? ""
csvData.append(""(firstName)","(lastName)"
")
}
try csvData.write(to: fileURL, atomically: true, encoding: .utf8)
}
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