//iOSjs注入

    NSString  *js =@"var script = document.createElement('script');script.type = 'text/javascript';document.getElementById('nickname').value ='ios';var child=document.getElementsByTagName('form')[0];child.submit();document.body.appendChild(script);";

    [webView stringByEvaluatingJavaScriptFromString:js];

//安卓

User user = BizLogic.getCurrentUser();

String  js = "var script = document.createElement('script');";
js+= "script.type = 'text/javascript';";
js += "document.getElementById('nickname').value = '"+user.nickname+"("+user.userid+")"+"';";//自动填写昵称

js+="var child=document.getElementsByTagName('form')[0];";//找到里面的表单节点

js+="child.submit();";

js += "document.body.appendChild(script);";//添加到body

webView.loadUrl("javascript:" + js);