我的js代码：
 <script>
 function checkStudent(){
    
$.ajax({
                cache: true,
                type: “POST”,
                url:”loginAction!checkStudent”,
                data:$(“”#loginStudent””).serialize(),// 你的formid
                async: false,
               
                success: function(data) {
                    document.getElementById(“loginStudent”).submit();
                    var i = parstInt(data);
                    if(i == 1){
                    alert(“success”);
                    window.location.href=”student.jsp”;
                    }
                    else if (i==0){
                     alert(“账号或密码错误”);
                    }
                        
                }
            });
            }
</script>

表单那里的代码：
   <div align=”center”>
        <form id=”loginStudent”>
        姓名：<input type=”text” name=”sname” />
        密码：<input type=”text” name=”password” />
        <input type=”button” value=”提交” id=”btn” onclick=”checkStudent()” />
        </form>

还有action中的代码：/*   check student part  */
public String checkStudent() throws IOException{

out = ServletActionContext.getResponse().getWriter();
List<Student> students = loginService.checkLoginStudent(model.getSname(), model.getPassword());
if(students.size()>0){
Student stu = students.get(0);
id = stu.getStudentId();
System.out.println(id);
out.write(“1”);
out.flush();
out.close();
return “student”;
}
else {
  out.write(“0”);
  out.flush();
out.close();
return “loginStudent”;

}
}
试了一个下午！就是不行！无语了，求各位帮忙！