getpermissionservlet.java

oa办公系统

package cn.jx.ecjtu.oa.servlets.users;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import cn.jx.ecjtu.oa.ps.pojo.Permission;
import cn.jx.ecjtu.oa.ps.pojo.Role;
import cn.jx.ecjtu.oa.services.ServiceFactory;
import cn.jx.ecjtu.oa.services.SysUserService;

public class GetPermissionServlet extends HttpServlet {

	/**
	 *  这个servlet用来填充分配权限界面的两个下拉列表
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

        doPost(request, response);
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

       String RoleId=request.getParameter("roleid");//获取角色ID
        int orderRoleId=Integer.parseInt(RoleId);
        Role role=sus.findRoleById(orderRoleId);
        String RoleName=role.getName();
        
		List<Permission> pm=sus.getAllPermission();//获得所有权限种类
		List<Permission> rp =sus.getPermissionsByRoleId(orderRoleId);//根据角色名获得该角色所有的权限
		
		  for (Iterator<Permission> it =pm.iterator(); it.hasNext();) {//使用Iterator将pm中含有rp的部分去掉
	            Permission permission =  (Permission)it.next();
	            if (rp.contains(permission)==true){
	                it.remove();
	            }
	        }

		//将数据存在request中，转发到role_premission.jsp分配权限页面
		request.setAttribute("RoleId", RoleId);
		request.setAttribute("RoleName", RoleName);
		request.setAttribute("pm",pm);
		request.setAttribute("rp",rp);
		request.getRequestDispatcher("/user/modify/role_premission.jsp").forward(request, response);
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occure
	 */
	private SysUserService sus=null;
	public void init() throws ServletException {
		sus=(SysUserService)ServiceFactory.getService(SysUserService.class);
	}

}