<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/bowendong</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; bowendong]]></copyright><item><title><![CDATA[将字符串中的\替换为\\，replace()]]></title><link>https://blog.youkuaiyun.com/bowendong/article/details/84499575</link><guid>https://blog.youkuaiyun.com/bowendong/article/details/84499575</guid><author>bowendong</author><pubDate>Fri, 15 Nov 2013 18:31:13 +0800</pubDate><description><![CDATA[

在字符串中\需要用来“\\”表示，例如System.out.println( &quot;\\&quot; ) ;只打印出一个&quot;\&quot;。正则表达式中也用\表示转义。\在正则表示式中也作为转义字符使用，所以在正则表达式中&quot;\\\\&quot;才表示一个反斜杠，即&quot;\&quot;。

        String file = &quot;d:&quot;+File.separator+&quot;xmldemo&quot;;        System.out.pr]]></description><category></category></item><item><title><![CDATA[myeclipse从svn服务器上下载项目源码]]></title><link>https://blog.youkuaiyun.com/bowendong/article/details/84499548</link><guid>https://blog.youkuaiyun.com/bowendong/article/details/84499548</guid><author>bowendong</author><pubDate>Fri, 15 Nov 2013 17:39:46 +0800</pubDate><description><![CDATA[File—&amp;gt;import，选择svn—&amp;gt;从svn检出项目—&amp;gt;创建新的资源库位置—&amp;gt;next—&amp;gt;将项目url贴于url输入框内—&amp;gt;next即可]]></description><category></category></item><item><title><![CDATA[java 程序 查找某个路径下的所有文件和文件夹]]></title><link>https://blog.youkuaiyun.com/bowendong/article/details/84499515</link><guid>https://blog.youkuaiyun.com/bowendong/article/details/84499515</guid><author>bowendong</author><pubDate>Fri, 15 Nov 2013 16:36:08 +0800</pubDate><description><![CDATA[java 的listFiles方法，例如File f = new File(&quot;d:\\java\\test1&quot;);File s[] = f.listFiles();for(int i=0;i&amp;lt;s.length;i++) {     System.out.println(s[i].getName());}]]></description><category></category></item><item><title><![CDATA[删除oracle数据库用户的dba权限 ]]></title><link>https://blog.youkuaiyun.com/bowendong/article/details/84499303</link><guid>https://blog.youkuaiyun.com/bowendong/article/details/84499303</guid><author>bowendong</author><pubDate>Fri, 15 Nov 2013 10:49:03 +0800</pubDate><description><![CDATA[
首先，用sys用户as SYSDBA 登陆PL/SQL Developer，左边的objects选My objects---&amp;gt;打开Users--找到要去掉dba权限的用户---右键edit---选Role privileges---&amp;gt;选择Role值为dba一行，点右边的&quot;-&quot;符号删掉---点下方的Apply按钮提交，哦了~~
遇到问题：用dongbw用户登录pl/sql，执行如下...]]></description><category></category></item><item><title><![CDATA[a configuration error occured during startup.please verify the preference field ]]></title><link>https://blog.youkuaiyun.com/bowendong/article/details/84480656</link><guid>https://blog.youkuaiyun.com/bowendong/article/details/84480656</guid><author>bowendong</author><pubDate>Tue, 17 Sep 2013 17:24:31 +0800</pubDate><description><![CDATA[
tomcat启动时报错：a configuration error occured during startup.please verify the preference field with the prompt: cannot connect to VM解决方法：Window-&amp;gt;Preferences-&amp;gt;MyEclipse Enterprice Workbench-&amp;gt;Ser...]]></description><category></category></item><item><title><![CDATA[oracle新建用户、修改、授权、导入导出数据]]></title><link>https://blog.youkuaiyun.com/bowendong/article/details/84478095</link><guid>https://blog.youkuaiyun.com/bowendong/article/details/84478095</guid><author>bowendong</author><pubDate>Tue, 10 Sep 2013 10:36:02 +0800</pubDate><description><![CDATA[1.新建用户，分配权限：
①切换用户sys登陆：
  conn sys/change_on_install as sysdba;
②创建用户：
  create user dongbw identified by 877423246;
③给用户dongbw授予CREATE SESSION的权限，要不然登陆的时候会报错：ORA-01045：user DONGBW lacks CREATE ...]]></description><category></category></item><item><title><![CDATA[查询Oracle中所有用户信息]]></title><link>https://blog.youkuaiyun.com/bowendong/article/details/84477850</link><guid>https://blog.youkuaiyun.com/bowendong/article/details/84477850</guid><author>bowendong</author><pubDate>Mon, 09 Sep 2013 15:18:23 +0800</pubDate><description><![CDATA[1. 查询Oracle中所有用户信息 select*from dba_users;

2. 只查询用户和密码 select username,password from dba_users;

3. 查询当前用户信息 select*from dba_ustats;]]></description><category></category></item><item><title><![CDATA[A configuration error occurred during startup. Please verify the preference fiel]]></title><link>https://blog.youkuaiyun.com/bowendong/article/details/84475478</link><guid>https://blog.youkuaiyun.com/bowendong/article/details/84475478</guid><author>bowendong</author><pubDate>Mon, 02 Sep 2013 19:30:23 +0800</pubDate><description><![CDATA[Tomcat启动报错：
Error starting Tomcat 6.x server
A configuration error occurred during startup. Please verify the preference field with the prompt:ERROR:transport 202:gethostbyname:unknownhost
ERROR:JD...]]></description><category></category></item><item><title><![CDATA[JAVA中int、String的类型转换]]></title><link>https://blog.youkuaiyun.com/bowendong/article/details/84472264</link><guid>https://blog.youkuaiyun.com/bowendong/article/details/84472264</guid><author>bowendong</author><pubDate>Fri, 23 Aug 2013 17:07:21 +0800</pubDate><description><![CDATA[

int -&gt; String

int i=12345;
String s=&quot;&quot;;
第一种方法：s=i+&quot;&quot;;
第二种方法：s=String.valueOf(i);
这两种方法有什么区别呢？作用是不是一样的呢？是不是在任何下都能互换呢？

String -&gt; int

s=&quot;12345&quot;;
int i;
第一种方法：i=Integer.parseInt(s);
第二...]]></description><category></category></item><item><title><![CDATA[java中两个整数相除得到小数点并保留两位小数的方法 ]]></title><link>https://blog.youkuaiyun.com/bowendong/article/details/84472262</link><guid>https://blog.youkuaiyun.com/bowendong/article/details/84472262</guid><author>bowendong</author><pubDate>Fri, 23 Aug 2013 17:03:11 +0800</pubDate><description><![CDATA[
当两个整数相除时，由于小数点以后的数字会被截断，使运算结果为整数，故此时若希望得到运算结果为所预期的浮点数，则此时必须将两整数其一或是全部强制转换类型为浮点数。
例如：
(float)a/b // 将整数其中一个强制转换成浮点数，再与另一个整数相除
a/(float)b
(float)a/(float)b // 将两个整数同时强制转换成浮点数后再彼此相除

float size =...]]></description><category></category></item><item><title><![CDATA[map中的值更新]]></title><link>https://blog.youkuaiyun.com/bowendong/article/details/84469806</link><guid>https://blog.youkuaiyun.com/bowendong/article/details/84469806</guid><author>bowendong</author><pubDate>Fri, 16 Aug 2013 11:29:25 +0800</pubDate><description><![CDATA[map中存的是key-&gt;value
如果要更新map中存的某对值，直接map.put(&quot;&quot;,&quot;&quot;);即可；
执行后，map中与key值匹配的那对值将会被更新


代码：
public class updateMap {
	public static void main(String args[]){
		Map map = new HashMap();
		map.put(&quot;紫光...]]></description><category></category></item><item><title><![CDATA[oracle修改表结构]]></title><link>https://blog.youkuaiyun.com/bowendong/article/details/84466455</link><guid>https://blog.youkuaiyun.com/bowendong/article/details/84466455</guid><author>bowendong</author><pubDate>Tue, 06 Aug 2013 15:41:41 +0800</pubDate><description><![CDATA[

    更改表的结构

    　　1.编辑表的字段

    　　修改一个列的数据类型(一般限于修改长度，修改为一个不同类型时有诸多限制):

    　　语法:

    　　ALTER TABLE 表名 MODIFY(列名,数据类型);

    　　eg1:

    　　alter table skate_test modify (author numbe...]]></description><category></category></item><item><title><![CDATA[内连接、左连接、右连接、全连接]]></title><link>https://blog.youkuaiyun.com/bowendong/article/details/84465989</link><guid>https://blog.youkuaiyun.com/bowendong/article/details/84465989</guid><author>bowendong</author><pubDate>Mon, 05 Aug 2013 12:28:57 +0800</pubDate><description><![CDATA[
   內连接仅选出两张表中互相匹配的记录．因此，这会导致有时我们需要的记录没有包含进来。内部连接是两个表中都必须有连接字段的对应值的记录，数据才能检索出来。
   左连接和右连接都是外部连接，也就是区别于内部连接，它对不满足连接条件的行并不是象内部连接一样将数据完全过滤掉，而是保留一部分数据，行数不会减少。
    左连接是只要左边表中有记录，数据就能检索出来，而右边有的记录必要在左边表中...]]></description><category></category></item><item><title><![CDATA[oracle修改表增加列删除列修改列  ]]></title><link>https://blog.youkuaiyun.com/bowendong/article/details/84465960</link><guid>https://blog.youkuaiyun.com/bowendong/article/details/84465960</guid><author>bowendong</author><pubDate>Mon, 05 Aug 2013 11:13:42 +0800</pubDate><description><![CDATA[oracle修改表;sql增加列;sql删除列;sql修改列

1.增加列

ALTER TABLE table_name ADD( column datatype [DEFAULT EXPR][,column datatype...]);

例如:

SQL&gt;ALTER TABLE emp01 ADD eno NUMBER(4);

2.修改列定义

例如:

SQL...]]></description><category></category></item><item><title><![CDATA[取消MyEclipse拼写检查  ]]></title><link>https://blog.youkuaiyun.com/bowendong/article/details/84465201</link><guid>https://blog.youkuaiyun.com/bowendong/article/details/84465201</guid><author>bowendong</author><pubDate>Fri, 02 Aug 2013 14:07:31 +0800</pubDate><description><![CDATA[当你使用MyEclipse时会进行拼写检查，只要简单的设置，它就不再烦恼你了。
Window –》 preferences –》 generals –》 text editor –》 spelling
在这个页面中，取消 enable spell checking 这个选项。
如果页面还有残留的拼写检查
project –》 clean
在这个页面中，选择要清除错误的工程。

[im...]]></description><category></category></item><item><title><![CDATA[Tomcat启动时报异常 java.net.SocketException: Windows Sockets error: 0: JVM_Bind]]></title><link>https://blog.youkuaiyun.com/bowendong/article/details/84464939</link><guid>https://blog.youkuaiyun.com/bowendong/article/details/84464939</guid><author>bowendong</author><pubDate>Thu, 01 Aug 2013 17:12:06 +0800</pubDate><description><![CDATA[严重: Error initializing endpoint
java.net.SocketException: Unrecognized Windows Sockets error: 0: JVM_Bind
 at java.net.PlainSocketImpl.socketBind(Native Method)
 at java.net.PlainSocketImpl.bind(Un...]]></description><category></category></item><item><title><![CDATA[ JAVA中获取当前系统时间]]></title><link>https://blog.youkuaiyun.com/bowendong/article/details/84464294</link><guid>https://blog.youkuaiyun.com/bowendong/article/details/84464294</guid><author>bowendong</author><pubDate>Wed, 31 Jul 2013 09:23:18 +0800</pubDate><description><![CDATA[一. 获取当前系统时间和日期并格式化输出:

import java.util.Date;
import java.text.SimpleDateFormat;

public class NowString {
public static void main(String[] args) {
SimpleDateFormat df = new SimpleDateFormat(&quot;y...]]></description><category></category></item><item><title><![CDATA[Tomcat：IOException while loading persisted sessions: java.io.EOFException解决手记]]></title><link>https://blog.youkuaiyun.com/bowendong/article/details/84463605</link><guid>https://blog.youkuaiyun.com/bowendong/article/details/84463605</guid><author>bowendong</author><pubDate>Mon, 29 Jul 2013 11:30:49 +0800</pubDate><description><![CDATA[一直用tomcat一段时间都正常无事，最近一次启动tomcat就发生以下异常：

严重: IOException while loading persisted sessions: java.io.EOFException
严重: Exception loading sessions from persistent storage

原因是tomcat对硬盘的session读取失败，彻底...]]></description><category></category></item><item><title><![CDATA[Oracle中TO_DATE()格式]]></title><link>https://blog.youkuaiyun.com/bowendong/article/details/84462655</link><guid>https://blog.youkuaiyun.com/bowendong/article/details/84462655</guid><author>bowendong</author><pubDate>Thu, 25 Jul 2013 16:45:44 +0800</pubDate><description><![CDATA[TO_DATE格式(以时间:2007-11-02   13:45:25为例)
  
        Year:     
        yy two digits 两位年                显示值:07
        yyy three digits 三位年                显示值:007
        yyyy four digits 四位年      ...]]></description><category></category></item><item><title><![CDATA[Spring中常用的hql查询方法 (getHibernateTemplate()) ]]></title><link>https://blog.youkuaiyun.com/bowendong/article/details/84461055</link><guid>https://blog.youkuaiyun.com/bowendong/article/details/84461055</guid><author>bowendong</author><pubDate>Mon, 22 Jul 2013 14:07:13 +0800</pubDate><description><![CDATA[一、find(String queryString);

      示例：this.getHibernateTemplate().find(&quot;from bean.User&quot;);

      返回所有User对象

 

二、find(String queryString , Object value);

      示例：this.getHibernateTemplate...]]></description><category></category></item></channel></rss>