我正在尝试从我的 swift 应用程序执行 jar 文件。我使用下面的代码:
let bundle = NSBundle.mainBundle()
let path = bundle.pathForResource("MyJar", ofType: "jar")!
let task = NSTask()
task.launchPath = "/usr/bin/java"
task.arguments = ["-jar", path, arg]
let pipe = NSPipe()
task.standardOutput = pipe
task.launch()
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let output: String = NSString(data: data, encoding: NSUTF8StringEncoding)!
print(output)
当我从 xcode 执行应用程序时它运行良好,但是当我从应用程序图标启动应用程序时它不起作用,我不明白为什么......
编辑: 所以我在我的代码中添加了一些 NSLog() :
let bundle = NSBundle.mainBundle()
let path = bundle.pathForResource("AudioTagger", ofType: "jar")!
NSLog("%@", "jar path : \(path)")
let task = NSTask()
task.launchPath = "/usr/bin/java"
task.arguments = ["-jar", path, xml]
let pipe = NSPipe()
task.standardOutput = pipe
let errorPipe = NSPipe()
task.standardError = errorPipe
task.launch()
task.waitUntilExit()
NSLog("%@", "Task is finished")
let data = pipe.fileHandleForReading.readDataToEndOfFile()
let output: String = NSString(data: data, encoding: NSUTF8StringEncoding)!
let errorData = pipe.fileHandleForReading.readDataToEndOfFile()
let errorOutput: String = NSString(data: errorData, encoding: NSUTF8StringEncoding)!
NSLog("%@", output)
NSLog("%@", errorOutput)
我将其输入控制台:
16:41:09 MyApp: jar path : /Users/User/Library/Developer/Xcode/DerivedData/MyApp-fbeddkvghwjpjpgvrkrfzbjxjvse/Build/Products/Release/MyApp.app/Contents/Resources/MyJar.jar
16:41:09 MyApp: Task is finished
16:41:14 Console: Failed to connect (_consoleX) outlet from (NSApplication) to (ConsoleX): missing setter or instance variable
标准错误似乎是空的,所以我还是不明白......
最佳答案
检查您的 Bundle Resources
中是否有您的 jar。
因为如果您使用 NSBundle,则还需要在 Bundle Resources
中包含 Jar。
如果那里没有它,则必须在 Build Phases
下将 JAR 添加到 Xcode 目标中以Copy Bundle Resources
。
关于java - 使用 nstask 从 swift 应用程序运行 jar 文件,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/28172294/