checkrolenameservlet.java

oa办公系统

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

import java.io.IOException;
import java.io.PrintWriter;
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.Role;
import cn.jx.ecjtu.oa.services.ServiceFactory;
import cn.jx.ecjtu.oa.services.SysUserService;

public class CheckRoleNameServlet extends HttpServlet {

	/**
	 * Ajax用Servlet，用来在添加新角色的时候动态验证角色名是否存在或为空
	 */
	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 rolename;
	        
	        String message="";
	        
	       //将异步提交的角色名转换编码，以防止乱码
			rolename=new String(request.getParameter("roleName").getBytes("ISO8859-1"),"GBK");
			PrintWriter out=response.getWriter();
			
	        
		        boolean tf=false;//设置判断标志，如为true则角色名重复，false则可以使用
			    List<Role> role=sus.getAllRole();//获得所有角色
			    int size=role.size();
			    for(int i=0;i<size;i++)
			    {
			    	//循环判断是否存在该角色名
			       if(rolename.equals(role.get(i).getName())==true)
			       {
			    	   tf=true;
			       }
			     
			    }
			    if(tf==true)//存在该角色名
			    {       
			    	message="{msg:false}";
				      out.write(message);
			   
			    	
			    }else{//不存在该角色名
			    	
			    	message="{msg:true}";
				      out.write(message);
			    
			    }
			    
	}

	/**
	 * 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);
	}

}