/// <summary>
/// 执行js V8方法
/// </summary>
/// <param name="reString">Js代码</param>
/// <param name="para">参数字符串(使用逗号分隔)</param>
/// <param name="MethodName">方法名称</param>
public static string V8Method(string reString, string para, string MethodName)
{
V8Engine engine = V8Engine.Create(); //创建V8对象
V8Script script = engine.Compile(reString); //编译
try
{
engine.Execute(script); //将编译的脚本加载到V8引擎中
string res = engine.Execute(string.Format("{0}({1})", MethodName, para)).ToString(); //执行结果
return(res);
}
catch (Exception ex)
{
return(ex.Message);//异常信息
}
}
public void CompileAndExecute(string script)
{
if (isDisposing)
{
return;
}
const string ES_REF = "ecmascript:";
const string JS_REF = "javascript:";
script = script.TrimStart();
string start = script.Substring(0, ES_REF.Length).ToLower();
script = start.StartsWith(ES_REF) ? script.Remove(0, ES_REF.Length) : script;
script = start.StartsWith(JS_REF) ? script.Remove(0, JS_REF.Length) : script;
using (InternalHandle handle = v8.Compile(script, SOURCE_NAME, false).AsInternalHandle)
{
if (!handle.IsError)
{
try
{
Handle result = v8.Execute(handle, true);
//handle.Dispose();
}
catch (Exception ex)
{
ConsoleColor tmp = Console.ForegroundColor;
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("(SCRIPT) {0}", ex.Message);
Console.ForegroundColor = tmp;
}
}
}
}
protected override bool Execute(string name, CefV8Value obj, CefV8Value[] arguments, out CefV8Value returnValue, out string exception)
{
returnValue = CefV8Value.CreateNull();
exception = null;
try
{
var context = CefV8Context.GetCurrentContext();
var browser = context.GetBrowser();
var frame = browser.GetMainFrame();
if (name == "compile" || name == "loadScript" || name == "loadScriptCompiled")
{
if (arguments.Length >= 3)
{
var script = arguments[0].GetStringValue();
var sourceName = arguments[1].GetStringValue();
var throwExceptionOnError = arguments[2].GetBoolValue();
var callback = (arguments.Length == 4 ? arguments[3] : null);
if (!string.IsNullOrEmpty(script) && !string.IsNullOrEmpty(sourceName))
{
if (callback != null && callback.IsFunction)
{
var runner = CefTaskRunner.GetForCurrentThread();
new Task(() =>
{
context.Enter();
if (name == "compile")
{
engine.Compile(script, sourceName, throwExceptionOnError);
}
else if (name == "loadScript")
{
engine.LoadScript(script, sourceName, throwExceptionOnError);
}
else if (name == "loadScriptCompiled")
{
engine.LoadScriptCompiled(script, sourceName, throwExceptionOnError);
}
runner.PostTask(new CallbackTask(context, callback, JsonMapper.ToJson(new StatusHelper("OK", name))));
context.Exit();
}).Start();
}
else
{
if (name == "compile")
{
engine.Compile(script, sourceName, throwExceptionOnError);
}
else if (name == "loadScript")
{
engine.LoadScript(script, sourceName, throwExceptionOnError);
}
else if (name == "loadScriptCompiled")
{
engine.LoadScriptCompiled(script, sourceName, throwExceptionOnError);
}
returnValue = CefV8Value.CreateString(JsonMapper.ToJson(new StatusHelper("OK", name)));
}
}
else
{
returnValue = DontMeetRequirements(context, callback);
}
}
else
{
returnValue = DontMeetRequirements(context, null);
}
}
else if (name == "consoleExecute" || name == "execute" || name == "verboseConsoleExecute")
{
if (arguments.Length >= 4)
{
var script = arguments[0].GetStringValue();
var sourceName = arguments[1].GetStringValue();
var throwExceptionOnError = arguments[2].GetBoolValue();
var timeOut = arguments[3].GetIntValue();
var callback = (arguments.Length == 5 ? arguments[4] : null);
if (!string.IsNullOrEmpty(script) && !string.IsNullOrEmpty(sourceName))
{
if (callback != null && callback.IsFunction)
{
var runner = CefTaskRunner.GetForCurrentThread();
new Task(() =>
{
context.Enter();
if (name == "consoleExecute")
{
engine.ConsoleExecute(script, sourceName, throwExceptionOnError, timeOut);
}
else if (name == "execute")
{
engine.Execute(script, sourceName, throwExceptionOnError, timeOut);
}
else if (name == "verboseConsoleExecute")
{
engine.VerboseConsoleExecute(script, sourceName, throwExceptionOnError, timeOut);
}
runner.PostTask(new CallbackTask(context, callback, JsonMapper.ToJson(new StatusHelper("OK", name))));
context.Exit();
}).Start();
}
else
{
if (name == "consoleExecute")
{
engine.ConsoleExecute(script, sourceName, throwExceptionOnError, timeOut);
}
else if (name == "execute")
{
engine.Execute(script, sourceName, throwExceptionOnError, timeOut);
}
else if (name == "verboseConsoleExecute")
{
engine.VerboseConsoleExecute(script, sourceName, throwExceptionOnError, timeOut);
}
returnValue = CefV8Value.CreateString(JsonMapper.ToJson(new StatusHelper("OK", name)));
}
}
else
{
returnValue = DontMeetRequirements(context, callback);
}
}
else
{
returnValue = DontMeetRequirements(context, null);
}
}
else if (name == "terminateExecution")
{
if (arguments.Length >= 0)
{
var callback = (arguments.Length == 1 ? arguments[0] : null);
if (callback != null && callback.IsFunction)
{
var runner = CefTaskRunner.GetForCurrentThread();
new Task(() =>
{
context.Enter();
engine.TerminateExecution();
runner.PostTask(new CallbackTask(context, callback, JsonMapper.ToJson(new StatusHelper("OK", "TerminateExecution"))));
context.Exit();
}).Start();
}
else
{
engine.TerminateExecution();
returnValue = CefV8Value.CreateString(JsonMapper.ToJson(new StatusHelper("OK", "TerminateExecution")));
}
}
else
{
returnValue = DontMeetRequirements(context, null);
};
}
else if (name == "runStartupFile")
{
if (arguments.Length >= 0)
{
var callback = (arguments.Length == 1 ? arguments[0] : null);
if (callback != null && callback.IsFunction)
{
var runner = CefTaskRunner.GetForCurrentThread();
new Task(() =>
{
context.Enter();
var message = "V8 Script Engine : Started";
Log.Trace(message, configuration.Verbose);
runner.PostTask(new CallbackTask(context, callback, JsonMapper.ToJson(new StatusHelper("OK", message))));
context.Exit();
}).Start();
}
else
{
var message = "V8 Script Engine : Started";
Log.Trace(message, configuration.Verbose);
returnValue = CefV8Value.CreateString(JsonMapper.ToJson(new StatusHelper("OK", message)));
}
}
else
{
returnValue = DontMeetRequirements(context, null);
};
}
return(true);
}
catch (Exception ex)
{
returnValue = CefV8Value.CreateNull();
exception = ex.Message;
return(true);
}
}