选中复选框后获取servlet中jsp行的更新值的列表

  • Z时代
  • 2024-01-10
  • 分类：问答

当我尝试在更新两个或更多行列后尝试获取值并尝试获取servlet时，即仅在servlet中获取一个值，而我必须发送两行或更多行，或者我们可以说项目更新列表到另一个servlet是什么？我试图做我写她的PLZ帮助我在Servlet和JSP新的IM

     <%@ page language="java" contentType="text/html; charset=ISO-8859-1"
        pageEncoding="ISO-8859-1"%>
    <%@ page import="com.nousinfo.tutorial.employee.service.model.bo.EmployeeProjectBO"%>
    <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
    <%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%>
    <%@page import="com.nousinfo.tutorial.employee.service.model.bo.EmployeeBO"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
    <title>Update Project</title>
    <link rel="stylesheet" href="css/style.css" type="text/css"></link>
</head>
    <body >
        <form action="ProjectUpdateServlet">
        <table border="1" width="500" id="tbl">
                <tr>
                    <td width="234"><b>click</b></td>   
                    <td width="119"><b>Employee Number</b></td>
                    <td width="234"><b>Project Code</b></td>
                    <td width="234"><b>Start Date</b></td>
                    <td width="234"><b>End Date</b></td>
                    <td width="234"><b>Role</b></td>
                </tr>
            <c:forEach var="employeeProjectBO" items="${sessionScope.projectList}">
                <tr>
                    <td><input type="checkbox"  value='${employeeProjectBO.projectCode}' name="projectCode"></td>
                    <td><input type="text" value='${employeeProjectBO.employeeNumber}' name="employeeNumber" readonly="readonly"/></td>
                    <td><input type="text" value='${employeeProjectBO.projectCode}' name="projectCode" readonly="readonly"/></td>
                    <td><input type="text" value='${employeeProjectBO.startDate}'name="startDate"/></td>
                    <td><input type="text" value='${employeeProjectBO.endDate}' name="endDate"/></td>
                    <td><input type="text" value='${employeeProjectBO.role}' name="role"/></td>
                        <td><input type="hidden" name="updateStatusProject" value="M" /></td>
                </tr>
            </c:forEach>
        </table>
                <p>&nbsp;</p>
                <br />
                <table width="200" border="0" align="center">
                    <tr>
                        <td><center>
                                <input type="submit" name="submit" value="update" onclick="self.close()">
                            </center></td>
                        <td><center>
                                <input type="button" name="cancle" value="cancle"
                                    onclick="self.close()"/>
                            </center></td>
                    </tr>
                </table>
                <hr size="1" width="786">
                <p>&nbsp;</p>
        </form>
        </body>
        </html>

这是我的servlet

  package com.nousinfo.tutorial;
import java.io.IOException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.nousinfo.tutorial.employee.service.model.bo.EmployeeProjectBO;
/**
 * Servlet implementation class ProjectUpdateServlet
 */
public class ProjectUpdateServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;
    /**
     * @see HttpServlet#HttpServlet()
     */
    public ProjectUpdateServlet() {
        super();
        // TODO Auto-generated constructor stub
    }
    protected void service(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException {
            String[] projectCode=   request.getParameterValues("checkedProject");
             for(int i=0; i<projectCode.length; i++) {
                    System.out.println(projectCode[i]);}
        System.out.println(request.getSession().getAttribute("projectList"));
        if (request.getParameter("submit") != null) {
            request.getSession().setAttribute("employeeProjectBO",
                    setEmployeeProject(request));
        }
    }
    public EmployeeProjectBO setEmployeeProject(HttpServletRequest request) {
        EmployeeProjectBO employeeProjectBO = new EmployeeProjectBO();
        String[] projectCode=   request.getParameterValues("checkedProject");
         for(int i=0; i<projectCode.length; i++) {
        employeeProjectBO.setUpdateStatus(request.getParameter("updateStatusProject").charAt(0));
        employeeProjectBO.setEmployeeNumber(Long.parseLong(request
                .getParameter("employeeNumber")));
        employeeProjectBO.setProjectCode(request.getParameter("projectCode"));
        employeeProjectBO.setStartDate(new java.sql.Date(getDate(
                request.getParameter("startDate")).getTime()));
        employeeProjectBO.setEndDate(new java.sql.Date(getDate(
                request.getParameter("endDate")).getTime()));
        employeeProjectBO.setRole(request.getParameter("role"));
        System.out.println(request.getParameter("role"));}
        return employeeProjectBO;
    }
    private static Date getDate(String source) {
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
        try {
            return format.parse(source);
        } catch (ParseException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
            return new Date();
        }
    }
}

在此处输入图片说明

回答：

1）您应该为复选框创建不同的名称name =“ projectCode”，例如将employeeProjectBO.projectCode添加到此输入名称

2）在servlet中

for(int i=0; i<projectCode.length; i++) {
request.getParameterValues("checkedProject"+projectCode.getProjectCode);
…
}

以上是 选中复选框后获取servlet中jsp行的更新值的列表 的全部内容， 来源链接： utcz.com/qa/401777.html

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