$.post(

"${pageContext.request.contextPath}/deptHead_assign.action",

{"studentId":student.id,"subjectId":selectedRows[0].subjectId},

function(result){

alert(result.num);

$.messager.alert("系统提示","落选学生<font color=red>"+student.name+"</font>已指派题目！");

$("#dlg").dialog("close");

},"Json");