是否有可能在Linux上使用Swift(raw或Swift框架)连接到Oracle数据库?我所做的是尝试构建一个Docker VM,安装Oracle二进制文件,添加OCILIB包然后使用名为SwiftOracle的包连接[尝试],这似乎不受支持(许多构建问题)并且只公开OCILIB C代码Swift使用模块映射和包装器。
我尝试使用Kitura框架,但这似乎都没有用 - Xcode无法编译,因为它无法找到C库或创建模块。
以下是我尝试无效的步骤:
构建Docker VM(包括Oracle二进制文件):https://github.com/wnameless/docker-oracle-xe-11g
下载并安装OCILIB:https://github.com/vrogier/ocilib
添加SwiftOracle包,修复构建问题并尝试构建。
答案 0 :(得分:0)
您可以使用以下方法连接到oracle数据库:(这可以通过蒸气社区的帮助实现。)
-----为了使oracle驱动程序正常工作,我已在Ubuntu -------------中捆绑了此方法 -需要安装oracle客户端,以便可以定义标头和库路径,您可以从oracle网站获取这些信息。
oracle-instantclinet*-basic-*.rpm
oracle-instantclinet*-devel-*.rpm
oracle-instantclinet*-sqlplus-*.rpm
-使用以下命令安装下载的软件包
sudo alien -i oracle-instantclinet*-basic-*.rpm
sudo alien -i oracle-instantclinet*-devel-*.rpm
sudo alien -i oracle-instantclinet*-sqlplus-*.rpm
-在Ubuntu上安装libaio1
sudo apt install libaio1
-此路径应位于〜/ .bashrc
#oracle home and library path
export ORACLE_HOME=/usr/lib/oracle/12.2/client64
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/lib/oracle/12.2/client64/lib:/usr/local/lib
-从Github下载OCILIB库 git clone https://github.com/vrogier/ocilib.git(或下载最新版本/在ocilib 4.5.2上测试) -将ocilib文件cd提取到ocilib文件夹,配置make并进行install
tar -zxf ocilib-4.5.2-gnu.tar.gz
cd ocilib-4.5.2
./configure --with-oracle-headers-path=/usr/include/oracle/12.2/client64/ --with-oracle-lib-path=/usr/lib/oracle/12.2/client64/lib CFLAGS="-O2 -m64"
make
sudo make install
-如果您需要处理unicode,请使用此配置,通常不需要
./configure --with-oracle-headers-path=/usr/include/oracle/12.2/client64/ --with-oracle-lib-path=/usr/lib/oracle/12.2/client64/lib --with-oracle-charset=wide CFLAGS="-O2 -m64"
-以上方法将OCILIB安装在您的计算机中。 -要在Vapor项目中使用OCILIB库,请在Package.swift文件中包含以下内容
// swift-tools-version:4.0
import PackageDescription
let package = Package(
name: "myAPIProject",
dependencies: [
// A server-side Swift web framework.
.package(url: "https://github.com/vapor/vapor.git", from: "3.0.0"),
// Swift ORM (queries, models, relations, etc) built on SQLite 3.
.package(url: "https://github.com/vapor/fluent-sqlite.git", from: "3.0.0"),
//Oracle wrapper for swift
.package(url: "https://github.com/h1257977/SwiftOracle.git", from: "0.1.7")
],
targets: [
.target(name: "App", dependencies: ["FluentSQLite","SwiftOracle", "Vapor"]),
.target(name: "Run", dependencies: ["App"]),
.testTarget(name: "AppTests", dependencies: ["App"])
]
)
-在Routes.swift中,包括以下内容:
import Vapor
import SwiftOracle
let service = OracleService(host: "192.168.1.12", port:"1521", service: "orcl")
let b = Connection(service: service, user:"test", pwd:"oracle")
final class VReq: Content {
var name: String?
var age: String?
init (NAME: String, AGE: String) {
self.name = NAME
self.age = AGE
}
final class VMdata {
func getData() throws -> [VReq] {
try! b.open()
b.autocommit = true
let cursor = try! b.cursor()
try! cursor.execute("select * from userlist")
//iterates each row in the cursor and maps only the values (keys are unique) from the dictionary of each rows, if its nil it will replace with "null"
var items = cursor.map { row in row.dict.mapValues { "\($0 ?? "NULL")" }} // output as [[String:String]]
//takes each dictionary in the items array and returns a VReq
let result = items.map { dict in VReq(NAME: dict["NAME"] ?? "NULL", ADDRESS: dict["ADDRESS"] ?? "NULL", USER_AGE: dict["USER_AGE"] ?? "NULL")}
return result
}
}
public func routes(_ router: Router) throws {
router.get("test") { req -> [VReq] in
let val = VMdata()
let vdata = try! val.getData()
return vdata
}
}
-要运行Vapor 3,您需要链接库文件
swift build -Xlinker -L/usr/local/lib && ./.build/x86_64-unknown-linux/debug/Run --hostname 0.0.0.0
-要显示任何数据库列中的unicode字符,您可能必须在托管Vapor应用程序的服务器中设置NLS_LANG。
export NLS_LANG=AMERICAN_AMERICA.AL32UTF8