前台jsp页面接收参数 转型的问题 小弟谢过了先

[fuhuaruoxiangsui]

接收后台的参数 我应该怎么做才能转型成功？ 总是转不过去
action方法:
public String Methods(){
HttpServletRequest request = ServletActionContext.getRequest();
String number = "0";
if("".equals(request.getParameter("number"))){
number = "0";
};
UserBean userbean = (UserBean) request.getSession().getAttribute("cic_user");
List<Bz_Project> list = bz_projectdao.getAllProject();
int size = bz_projectdao.getProjectSize();
Bz_Project project = list.get(Integer.parseInt(number));
request.getSession().setAttribute("project", project);
request.setAttribute("size", size);
request.setAttribute("number", number);
return "methodsUI";}
前台jsp
<%
int number = (Integer) (request.getAttribute("number") == null ? "0": request.getAttribute("number"));
int size = (Integer) (request.getAttribute("size") == null ? "0": request.getAttribute("size"));
%>
<bean:define id="numStr" value="${number}" type="java.lang.String"/>
<input type="hidden" name="cp" value="${number }" /> 第${number }页/共${size }页
<input type="button" value="上一页" onclick="setP(${number} - 1)" />
<input type="button" value="下一页" onclick="setP(${number} + 1)"/>