需要解决方案，我已按照链接 http://blog.javaplanner.com/creating-a-simple-java-event-calendar中指定的所有步骤
我已经将 EventsManager.java 代码更改为它在 oracle 中支持的数据格式，如下所示
package com.dhtmlx.demo;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import com.dhtmlx.planner.DHXEv;
import com.dhtmlx.planner.DHXEvent;
import com.dhtmlx.planner.DHXEventsManager;
import com.dhtmlx.planner.DHXStatus;
import java.sql.*;
public class EventsManager extends DHXEventsManager {
public EventsManager(HttpServletRequest request) {
super(request);
}
public Iterable getEvents() {
DHXEventsManager.date_format = "YYYY-MM-DD HH24:MI:SS.FF";
List evs = new ArrayList();
try {
java.sql.Connection conn = DatabaseConnection.getConnection();
java.sql.Statement statement = conn.createStatement();
String query = "SELECT event_id, event_name, start_date, end_date FROM events";
ResultSet resultset = statement.executeQuery(query);
while (resultset.next()) {
DHXEvent e = new DHXEvent();
e.setId(Integer.parseInt(resultset.getString("event_id")));
e.setText(resultset.getString("event_name"));
e.setStart_date(resultset.getString("start_date"));
e.setEnd_date(resultset.getString("end_date"));
evs.add(e);
}
conn.close();
} catch (SQLException e1) {
e1.printStackTrace();
}
DHXEventsManager.date_format = "YYYY-MM-DD HH24:MI:SS.FF";
return evs;
}
@Override
public DHXStatus saveEvent(DHXEv event, DHXStatus status) {
java.sql.Connection conn = DatabaseConnection.getConnection();
java.sql.PreparedStatement ps = null;
java.sql.ResultSet result = null;
try {
String query = null;
String start_date = new SimpleDateFormat("YYYY-MM-DD HH24:MI:SS.FF").format(event.getStart_date());
String end_date = new SimpleDateFormat("YYYY-MM-DD HH24:MI:SS.FF").format(event.getEnd_date());
if (status == DHXStatus.UPDATE) {
query = "UPDATE events SET event_name=?, start_date=?, end_date=? WHERE event_id=?";
ps = conn.prepareStatement(query, Statement.RETURN_GENERATED_KEYS);
ps.setString(1, event.getText());
ps.setString(2, start_date);
ps.setString(3, end_date);
ps.setInt(4, event.getId());
} else if (status == DHXStatus.INSERT) {
query = "INSERT INTO events (event_id, event_name, start_date, end_date) VALUES (null, ?, ?, ?)";
ps = conn.prepareStatement(query, Statement.RETURN_GENERATED_KEYS);
ps.setString(1, event.getText());
ps.setString(2, start_date);
ps.setString(3, end_date);
} else if (status == DHXStatus.DELETE) {
query = "DELETE FROM events WHERE event_id=? LIMIT 1";
ps = conn.prepareStatement(query, Statement.RETURN_GENERATED_KEYS);
ps.setInt(1, event.getId());
}
if (ps!=null) {
ps.executeUpdate();
result = ps.getGeneratedKeys();
if (result.next()) {
event.setId(result.getInt(1));
}
}
} catch (SQLException e) {
e.printStackTrace();
} finally {
if (result != null) try { result.close(); } catch (SQLException e) {}
if (ps != null) try { ps.close(); } catch (SQLException e) {}
if (conn != null) try { conn.close(); } catch (SQLException e) {}
}
return status;
}
@Override
public DHXEv createEvent(String id, DHXStatus status) {
return new DHXEvent();
}
}
但在控制台出现以下错误
java.lang.IllegalArgumentException: Illegal pattern character 'I'
at java.text.SimpleDateFormat.compile(Unknown Source)
at java.text.SimpleDateFormat.initialize(Unknown Source)
at java.text.SimpleDateFormat.<init>(Unknown Source)
at java.text.SimpleDateFormat.<init>(Unknown Source)
at com.dhtmlx.planner.DHXEvent.setStart_date(DHXEvent.java:61)
at com.dhtmlx.demo.EventsManager.getEvents(EventsManager.java:36)
at com.dhtmlx.planner.DHXEventsManager.load(DHXEventsManager.java:49)
at com.dhtmlx.planner.DHXEventsManager.run(DHXEventsManager.java:42)
at org.apache.jsp.events_jsp.getEvents(events_jsp.java:15)
at org.apache.jsp.events_jsp._jspService(events_jsp.java:63)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:388)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Unknown Source)
并且无法在日历中显示从数据库中挑选的那些事件
能够在浏览器上创建这些事件但没有被保存并抛出错误 parseException