jfinal的getpara取值

<div class="form-group">
<label class="col-sm-2 control-label">${i18nMap["admin.wxx.teacher.image"]}</label>
<input id="file-1" type="file" name="image" multiple class="file" data-overwrite-initial="false" data-min-file-count="1" value="teacher.image">
</div>

<form id="editForm" action="${cxt!}/jf/platform/teacher/save"
method="POST" enctype="multipart/form-data" role="form" class="form-horizontal">

public void save() {
UploadFile image = getFile("image"); //首先
String a = getPara("teacher.name");
String pas = getPara("password");
String uname = getPara("username");