newspageservlet.java

基于ssh框架

package Control;

import java.io.IOException;
import java.util.ArrayList;

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

import com.zzu.biz.impl.StudentBizImpl;




//新闻分页控制器
public class NewsPageServlet extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public NewsPageServlet() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	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 {

		this.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 {

		response.setContentType("text/html");
		
		request.setCharacterEncoding("gbk");
		
		//调用查询的方法
		ArrayList list=(ArrayList)new StudentBizImpl().book();
		
		//设置分页信息
		 String cur = request.getParameter("pagesize");//取得当前页面
	        if (cur == null) {//判断是否为空
	            cur = "1";
	        }
	        Module.b_PageBean p = new Module.b_PageBean ();//设置分页Bean的属性，得到一个对象
	        p.setCurrPage(Integer.parseInt(cur));//设置当前页面
	        p.setAl(list);//设置所有的要显示的数据	        
	        
	       
	        	
	        	
	        if(list.size()>0){
//        		 for(Iterator it=list.iterator();it.hasNext();)
//	     	     {
//	     	        	News news=(News)it.next();
//	     	        	System.out.println("输出新闻："+news.getTitle());
//	     	     }
	        	request.getSession().setAttribute("arraysearch", p);       //放入会话
	        }
		
		
			if(list!=null && list.size()!=0){//有结果时转到显示页面		
				request.getRequestDispatcher("adminNewsList.jsp").forward(request, response);
			}else{//无结果时提示无结果
				
				response.sendRedirect("index.jsp");
			}		
	}
	
	public String input(String in)
	{
		return in==null?"":in;
		
	}


	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occure
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}