swift 与JavaScript之间方法的相互调用及传值

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如图：
此代码为swift 与JavaScript之间方法的相互调用及传值，调用方法分两种，传值方法分两种。
////  ViewController.swift//  Test_js_swift////  Created by gmy on 16/4/20.//  Copyright © 2016年 dhc. All rights reserved.//import UIKitimport JavaScriptCoreclass ViewController: UIViewController {     var context = JSContext()    var jsContext: JSContext?        @IBOutlet weak var webView: UIWebView!    override func viewDidLoad() {        super.viewDidLoad()        webView.delegate = self        loadJS()            }            //MARK: - loadJS    func loadJS() {        let path = NSBundle.mainBundle().pathForResource("test", ofType: "html")        let url = NSURL(fileURLWithPath: path!)        let request = NSURLRequest(URL: url)        webView.loadRequest(request)        }       // Swift 调用JS 方法 （无参数）    @IBAction func swift_js_pargram(sender: AnyObject) {        self.context.evaluateScript("Swift_JS1()")//        self.webView.stringByEvaluatingJavaScriptFromString("Swift_JS1()") // 此方法也可行    }        // Swift 调用JS 方法 （有参数）    @IBAction func swift_js_nopargam(sender: AnyObject) {        self.context.evaluateScript("Swift_JS2('oc' ,'Swift')")//        self.webView.stringByEvaluatingJavaScriptFromString("Swift_JS2('oc','swift')") // 此方法也可行    }        func menthod1() {        print("JS调用了无参数swift方法")    }        func menthod2(str1: String, str2: String) {        print("JS调用了有参数swift方法:参数为\(str1),\(str2)")    }        func webView(webView: UIWebView, didFailLoadWithError error: NSError?) {        print(error)    }}extension ViewController: UIWebViewDelegate {    func webView(webView: UIWebView, shouldStartLoadWithRequest request: NSURLRequest, navigationType: UIWebViewNavigationType) -> Bool {        let str = NSBundle.mainBundle().pathForResource("test", ofType: "html")        let request = NSURLRequest(URL: NSURL(string: str!)!)        let connecntion = NSURLConnection(request: request, delegate: self)        connecntion?.start()        return true    }        func webViewDidStartLoad(webView: UIWebView) {        print("webViewDidStartLoad----")            }        func webViewDidFinishLoad(webView: UIWebView) {        print("webViewDidFinishLoad----")        self.context = webView.valueForKeyPath("documentView.webView.mainFrame.javaScriptContext") as! JSContext        // JS调用了无参数swift方法        let temp1: @convention(block) () ->() = {            self.menthod1()        }        self.context.setObject(unsafeBitCast(temp1, AnyObject.self), forKeyedSubscript: "test1")                // JS调用了有参数swift方法        let temp2: @convention(block) () ->() = {            let array = JSContext.currentArguments() // 这里接到的array中的内容是JSValue类型            for object in array {                print(object)            }            self.menthod2(array[0].toString(), str2: array[1].toString())        }        self.context.setObject(unsafeBitCast(temp2, AnyObject.self), forKeyedSubscript: "test2")                // 模型注入的方法                let model = JSObjCModel()        model.controller = self        model.jsContext = context        self.jsContext = context                // 这一步是将OCModel这个模型注入到JS中，在JS就可以通过OCModel调用我们公暴露的方法了。        self.jsContext?.setObject(model, forKeyedSubscript: "OCModel")        let url = NSBundle.mainBundle().URLForResource("test", withExtension: "html")        self.jsContext?.evaluateScript(try? String(contentsOfURL: url!, encoding: NSUTF8StringEncoding));                self.jsContext?.exceptionHandler = {            (context, exception) in            print("exception @", exception)        }    }    }@objc protocol JavaScriptSwiftDelegate: JSExport {    func callSystemCamera()        func showAlert(title: String, msg: String)        func callWithDict(dict: [String: AnyObject])        func jsCallObjcAndObjcCallJsWithDict(dict: [String: AnyObject])}@objc class JSObjCModel: NSObject, JavaScriptSwiftDelegate {    weak var controller: UIViewController?    weak var jsContext: JSContext?        func callSystemCamera() {        print("js call objc method: callSystemCamera");                let jsFunc = self.jsContext?.objectForKeyedSubscript("jsFunc");        jsFunc?.callWithArguments([]);    }        func showAlert(title: String, msg: String) {        dispatch_async(dispatch_get_main_queue()) { () -> Void in            let alert = UIAlertController(title: title, message: msg, preferredStyle: .Alert)            alert.addAction(UIAlertAction(title: "ok", style: .Default, handler: nil))            self.controller?.presentViewController(alert, animated: true, completion: nil)        }    }        // JS调用了我们的方法    func callWithDict(dict: [String : AnyObject]) {        print("js call objc method: callWithDict, args: %@", dict)    }        // <span style="font-family: Arial, Helvetica, sans-serif;">JS调用了我们的方法</span>    func jsCallObjcAndObjcCallJsWithDict(dict: [String : AnyObject]) {        print("js call objc method: jsCallObjcAndObjcCallJsWithDict, args: %@", dict)                let jsParamFunc = self.jsContext?.objectForKeyedSubscript("jsParamFunc");        let dict = NSDictionary(dictionary: ["age": 18, "height": 168, "name": "lili"])        jsParamFunc?.callWithArguments([dict])    }}extension ViewController: NSURLConnectionDelegate,NSURLConnectionDataDelegate {    func connection(connection: NSURLConnection, didReceiveData data: NSData) {        print("didReceiveData\(data)")    }        func connection(connection: NSURLConnection, willSendRequest request: NSURLRequest, redirectResponse response: NSURLResponse?) -> NSURLRequest? {        print("request:\(request)response:\(response)")        return request    }        func connection(connection: NSURLConnection, didFailWithError error: NSError) {            }        }
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