问存储在本地文件中的"log4javascript“记录器

EN

function FileAppender() {}

FileAppender.prototype = new log4javascript.Appender();

FileAppender.prototype.layout = new log4javascript.SimpleLayout();

FileAppender.prototype.append = function(loggingEvent) {

  var appender = this;

     var getFormattedMessage = function() {
    var layout = appender.getLayout();
     var formattedMessage = layout.format(loggingEvent);
      if (layout.ignoresThrowable()) {
          formattedMessage += loggingEvent.getThrowableStrRep();
      }
      return formattedMessage;
    };
    writefile = function(destinationFile, message) {
     if (isEmpty(destinationFile)) {
         log.error("Source location unknown");
         return;
    }
    if ($.browser.msie) {
        try {
        var fso = new ActiveXObject("Scripting.FileSystemObject");
        var file = fso.OpenTextFile(destinationFile, 8, true);
        file.WriteLine(message);
        file.close();
        } catch (e) {
        log.error("Please validate if file exist");
        }
    } else {
        netscape.security.PrivilegeManager
            .enablePrivilege("UniversalXPConnect");
        this.fso.initWithPath(destinationFile);
        if (!this.fso.exists()) {
        // create file if needed
        this.fso.create(0x00, 0600);
        }

        var file = Components.classes["@mozilla.org/network/file-output-stream;1"].createInstance(Components.interfaces.nsIFileOutputStream);
        file.init(this.fso, 0x04 | 0x08 | 0x10, 064, 0);
        var line = message;
        file.write(line, line.length); // write data
        file.close();
    }
    };
    getFile = function() {
    return "c://temp//log//Javascriptlog.log";
    };
    writefile(getFile(), getFormattedMessage());
};

FileAppender.prototype.toString = function() {
    return "FileAppender";
};

log4javascript.FileAppender = FileAppender;