【代码片-3】基于jsp+javabean+servlet+mongodb 增删改查

来源：互联网发布：逆战天梯卡数据不扣分编辑：程序博客网时间：2024/05/16 06:08
作者：u013045746----感谢原创，感谢作者！！
标签：mongodb 增删改查 javabean servlet jsp
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<prename="code"class="html">package org.newyear.servlet;
 
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
 
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
import org.newyear.dao.MongodbDao;
import org.newyear.dao.MongodbDaoImpl;
import org.newyear.model.Employee;
import org.newyear.model.Page;
 
/**
 * Servlet implementation class MongoDB
 */
public class MongoDBServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;
    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doPost(request, response);
    }
 
    /**
     * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
     */
    @SuppressWarnings("unused")
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        request.setCharacterEncoding("utf-8");
        response.setContentType("text/html;charset=UTF-8");
        MongodbDao mongdbDao=new MongodbDaoImpl();
        String action = request.getParameter("action");
        Employee emp=new Employee();
        //跳转到添加页面
        if(action!=null && action.equals("toAddEmp")){
            request.getRequestDispatcher("/WEB-INF/view/mongodb/addEmp.jsp").forward(request, response);
        //添加员工
        }else if(action!=null && action.equals("addEmp")){
            setEmp(request, emp);
            mongdbDao.addEmp(emp);
            response.sendRedirect(request.getContextPath()+"/MongoDB?action=getEmpList");
        //获取员工并且分页 和  根据条件搜索
        }else if(action!=null && action.equals("getEmpList")){
            String name = request.getParameter("name");
            if(name!=null && !name.equals("")){
                emp.setName(name);
            }
            String sex = request.getParameter("sex");
            if(sex!=null && !sex.equals("")){
                emp.setSex(Integer.parseInt(sex));
            }
            String minAge = request.getParameter("minAge");
            if(minAge!=null && !minAge.equals("")){
                emp.setMinAge(Integer.parseInt(minAge));
            }
            String maxAge = request.getParameter("maxAge");
            if(maxAge!=null && !maxAge.equals("")){
                emp.setMaxAge(Integer.parseInt(maxAge));
            }
             
            String minBrith = request.getParameter("minBrith");
            if(minBrith!=null && !minBrith.equals("")){
                emp.setMinBrith(minBrith);
            }
            String maxBrith = request.getParameter("maxBrith");
            if(maxBrith!=null && !maxBrith.equals("")){
                emp.setMaxBrith(maxBrith);
            }
             
            int count=mongdbDao.getCountEmp(emp);
            String pageIndex = request.getParameter("emp.pageIndex");
            if(pageIndex!=null && !pageIndex.equals("")){
                emp.setPageIndex(Integer.parseInt(pageIndex));
            }
            emp.setTotalCount(count);
            emp.calculatePage();
            Page page=emp;
            List<Employee> listEmp=mongdbDao.getEmpList(emp);
            request.setAttribute("page", page);
            request.setAttribute("listEmp", listEmp);
            String parameter = request.getParameter("flag");
            int flag = 0;
            if(parameter!=null && ! parameter.equals("")){
                flag=Integer.parseInt(parameter);
            }
            if(flag==1){
                request.getRequestDispatcher("/WEB-INF/view/mongodb/PageListEmp.jsp").forward(request, response);
            }else{
                request.getRequestDispatcher("/WEB-INF/view/mongodb/getListInfoEmp.jsp").forward(request, response);
            }
        //跳转到修改页面  
        }else if(action!=null && action.equals("toUpdateEmp")){
            String eid = request.getParameter("eid");
            if(eid!=null){
                emp.setId(Integer.parseInt(eid));
            }
            emp=mongdbDao.findEmp(emp);
            request.setAttribute("emp", emp);
            request.getRequestDispatcher("/WEB-INF/view/mongodb/updateEmp.jsp").forward(request, response);
        //修改员工
        }else if(action!=null && action.equals("updateEmp")){
            setEmp(request, emp);
            String id = request.getParameter("id");
            emp.setId(Integer.parseInt(id));
            mongdbDao.updateEmp(emp);
            response.sendRedirect(request.getContextPath()+"/MongoDB?action=getEmpList");
        //修改员工
        }else if(action!=null && action.equals("delEmp")){
            String ids = request.getParameter("ids");
            mongdbDao.delEmp(ids);
            response.sendRedirect(request.getContextPath()+"/MongoDB?action=getEmpList");
        }
         
    }
 
    private void setEmp(HttpServletRequest request, Employee emp) {
        String brith = request.getParameter("brith");
        String name = request.getParameter("name");
        String sex = request.getParameter("sex");
        String age = request.getParameter("age");
        if(brith!=null){
            emp.setBrith(brith);
        }
        if(age!=null){
            emp.setAge(Integer.parseInt(age));
        }
        if(name!=null){
            emp.setName(name);
        }
        if(sex!=null){
            emp.setSex(Integer.parseInt(sex));
        }
    }
}
</pre>
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【代码片-3】 基于jsp+javabean+servlet+mongodb 增删改查

【代码片-3】基于jsp+javabean+servlet+mongodb 增删改查
