Question

我在jsp文件中通过ajax从servlet获取数据时遇到问题。我的servlet已连接到mySQL Workbench数据库。我正在使用fullcalendar插件，似乎无法通过servlet从数据库中获取必要的数据。有人可以帮我吗？

这些是我的CalendarIO.jsp代码：

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>

<link rel='stylesheet' href='fullcalendar/fullcalendar.css' />
<script src='lib/jquery.min.js'></script>
<script src='lib/moment.min.js'></script>
<script src='fullcalendar/fullcalendar.js'></script>

<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>

<script>
// fullcalendar functions
$(document).ready(function() {

    $('#calendar').fullCalendar({
        header: {
            left: 'prev,next today',
            center: 'title',
            right: 'month,agendaWeek,agendaDay'
        },
        selectable: true,
        selectHelper: true,
        select: function(start, end) {
            var title = prompt('Event Title:');
            var events;
            var eventData;
            if (title) {
                eventData = {
                    title: title,
                    start: start,
                    end: end
                };
                $('#calendar').fullCalendar('renderEvent', eventData, true); // stick? = true
            }
            $('#calendar').fullCalendar('unselect');
        },
        editable: true,
        eventLimit: true,
        eventClick: function(event){
            $(".closon").click(function() {
           $('#calendar').fullCalendar('removeEvents',event._id);
        });
        },
    events: { url: 'http://localhost:8080/ENWP_Calendar/CalBean', type: 'POST'},
        eventRender: function(event, element) {
        element.append( "<span class='closeon'>X</span>" );
        element.find(".closeon").click(function() {
           $('#calendar').fullCalendar('removeEvents',event._id);
        });
    }
    });

    });
</script>
    <body>

    <div id="calendar" style="width: 70%; height: 40%; display: block; margin: auto; padding-top: 20%; padding-bottom: 20%;"></div>

    </body>
    </html>

这些是我的servlet（CalBean.java）代码：

package servlet;

import java.beans.Statement;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Calendar;

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

import com.google.gson.Gson;
import com.sun.istack.internal.logging.Logger;

import model.CalInfo;
import net.sf.json.JSONArray;





/**
 * Servlet implementation class CalBean
 */
@WebServlet("/CalBean")
public class CalBean extends HttpServlet {

   Calendar now = Calendar.getInstance();
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

    ArrayList array = new ArrayList();
    try {
        Connection con = null;

        con = DriverManager.getConnection("jdbc:mysql://127.0.0.1:3306/? 
    user=root");

        Statement stmt = null;
        String query = "select title, start " +
                       "from calendar ";

        stmt = (Statement) con.createStatement();
        ResultSet rs = ((java.sql.Statement) stmt).executeQuery(query);
        while (rs.next()) {
            CalInfo c = new CalInfo();
            c.setTitle(rs.getString("title"));
            c.setStart(rs.getString("start"));

            String t = rs.getString("TYPE_CODE");

            array.add(c);
        }
    }
    catch (SQLException ex) {}

    response.setContentType("application/json");
    response.setCharacterEncoding("UTF-8");
    PrintWriter out = response.getWriter();
    out.write(new Gson().toJson(array));
}

}

非常感谢大家！自2周前以来，我一直在尝试解决此问题...

使用ajax从{jsp文件中的servlet中获取字符串数组

0 个答案: