https://blog.youkuaiyun.com/cxwujianzh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/cxwujian/article/details/135155450https://blog.youkuaiyun.com/cxwujian/article/details/135155450cxwujianFri, 22 Dec 2023 16:10:38 +0800https://blog.youkuaiyun.com/cxwujian/article/details/128010354https://blog.youkuaiyun.com/cxwujian/article/details/128010354cxwujianThu, 24 Nov 2022 00:34:48 +0800https://blog.youkuaiyun.com/cxwujian/article/details/8178845https://blog.youkuaiyun.com/cxwujian/article/details/8178845cxwujianTue, 13 Nov 2012 15:35:18 +0800https://blog.youkuaiyun.com/cxwujian/article/details/7706838https://blog.youkuaiyun.com/cxwujian/article/details/7706838cxwujianSun, 01 Jul 2012 17:22:15 +0800https://blog.youkuaiyun.com/cxwujian/article/details/6369323https://blog.youkuaiyun.com/cxwujian/article/details/6369323cxwujianThu, 28 Apr 2011 12:45:00 +0800import java.io.*; public class FileOperate { public FileOperate() { } /** * 新建目录 * @param folderPath String 如 c:/fqf * @return boolean */ public void newFolder(String folderPath) { try { String filePath = ]]>https://blog.youkuaiyun.com/cxwujian/article/details/6331055https://blog.youkuaiyun.com/cxwujian/article/details/6331055cxwujianMon, 18 Apr 2011 14:21:00 +0800  java.lang.NullPointerException    Stack Trace:  org.apache.tapestry.html.Shell.writeStylesheetLink(Shell.java:180) org.apache.tapestry.html.Shell.renderComponent(Shell.java:116) org.apache.tapestry.AbstractComponent.render(AbstractComponent.jav]]>https://blog.youkuaiyun.com/cxwujian/article/details/6325432https://blog.youkuaiyun.com/cxwujian/article/details/6325432cxwujianFri, 15 Apr 2011 13:08:00 +0800


 
在程序中通过 Hibernate 来保存 java.sql.Clob 或者 java.sql.Blob 实例时，必须包含两个步骤：
1.在一个数据库事务中先保存一个空的 Blob 或 Clob 实例。
2.接着锁定这条记录，更新上面保存的 Blob 或 Clob 实例，把二进制数据或文本数据写到 Blob 或 Clob 实例中
二、mysql数据库导入导出
1.导出整个数据库：
mysqldump]]>https://blog.youkuaiyun.com/cxwujian/article/details/6312929https://blog.youkuaiyun.com/cxwujian/article/details/6312929cxwujianSun, 10 Apr 2011 01:55:00 +0800      这两天用swing写打印，不知道怎么调打印纸张大小，setSize(width, height)里面的参数的单位是点(像素)，不知道怎么转成厘米。但是从下载的资料里都看到这样一句：页面大小以点为计量单位，1点为1英才的1/72，1英寸为25.4毫米。A4纸大致为595×842点

大家都知道A4纸的大小为210mm*297mm
也就是210mm换成像素就是595点，同理297mm就是842点
大致1mm=2.833点，这样就可以设置自己要打印的]]>https://blog.youkuaiyun.com/cxwujian/article/details/6106188https://blog.youkuaiyun.com/cxwujian/article/details/6106188cxwujianThu, 30 Dec 2010 00:25:00 +08000){ sb.append(num.charAt(num.length() -1)); num = (String) num.subSequence(0, num.lengt]]>https://blog.youkuaiyun.com/cxwujian/article/details/6082608https://blog.youkuaiyun.com/cxwujian/article/details/6082608cxwujianFri, 17 Dec 2010 16:51:00 +0800public static Date convertStringToDate(String date) {
  if(date == null) return null;
  String[] d = date.split("-");
  Calendar cal = Calendar.getInstance();
 System.out.println(cal.getTime());//第一次打印
  try {
   cal.set]]>https://blog.youkuaiyun.com/cxwujian/article/details/6075900https://blog.youkuaiyun.com/cxwujian/article/details/6075900cxwujianTue, 14 Dec 2010 17:11:00 +0800用TableView的时候出现这个错误：
 Either the tableModel parameter or both source and columns parameters must be specified by component school/SchoolAdminPayAffiliate/incomeTableorg.apache.hivemind.ApplicationRuntimeExceptionEither the tableModel parameter o]]>https://blog.youkuaiyun.com/cxwujian/article/details/6050483https://blog.youkuaiyun.com/cxwujian/article/details/6050483cxwujianThu, 02 Dec 2010 16:35:00 +0800    在用户名和密码都没有问题的情况下，或者曾经用的好好的，突然就发不出邮件了，如果代码抛出javax.mail.AuthenticationFailedException异常。
    先登录邮箱测试一下看能否进行正常的收发邮件。例如我用的是smtp.gmail.com发送邮件，那我就用username和password登录gmail邮箱发送邮件试试。
    如果发送成功，不妨再重新发送邮件试试。
    我遇到的情况是这样的，我登录gmail准备测试的时候，]]>https://blog.youkuaiyun.com/cxwujian/article/details/6026812https://blog.youkuaiyun.com/cxwujian/article/details/6026812cxwujianMon, 22 Nov 2010 13:49:00 +0800在配置mail service时发现的
javax.mail.MessagingException: 530 5.7.0 Must issue a STARTTLS command first.
解决方法是在mail-service.xml文件中添加如下内容

https://blog.youkuaiyun.com/cxwujian/article/details/5840157https://blog.youkuaiyun.com/cxwujian/article/details/5840157cxwujianThu, 26 Aug 2010 12:43:00 +0800https://blog.youkuaiyun.com/cxwujian/article/details/5804620https://blog.youkuaiyun.com/cxwujian/article/details/5804620cxwujianWed, 11 Aug 2010 16:26:00 +0800https://blog.youkuaiyun.com/cxwujian/article/details/5512044https://blog.youkuaiyun.com/cxwujian/article/details/5512044cxwujianWed, 21 Apr 2010 16:19:00 +0800https://blog.youkuaiyun.com/cxwujian/article/details/5180385https://blog.youkuaiyun.com/cxwujian/article/details/5180385cxwujianTue, 12 Jan 2010 10:15:00 +0800https://blog.youkuaiyun.com/cxwujian/article/details/4563574https://blog.youkuaiyun.com/cxwujian/article/details/4563574cxwujianThu, 17 Sep 2009 16:56:00 +0800https://blog.youkuaiyun.com/cxwujian/article/details/4521175https://blog.youkuaiyun.com/cxwujian/article/details/4521175cxwujianFri, 04 Sep 2009 23:02:00 +0800