BlogJava-Mayer-文章分类-Java

Clob

Mayer — Sun, 17 Sep 2006 14:50:00 GMT

下载Oracle10g最新版本的JDBC驱动，然后在HBM映射文件中对应clob字段的使用type="text"类型，Java持久对象对应clob字段的定义为String

Mayer 2006-09-17 22:50 发表评论

不同数据库之分页sql

Mayer — Wed, 13 Sep 2006 15:13:00 GMT

mysql:
select * from A limit startRow,endRow

oracle:
select b.* from (select a.*,rownum as linenum from (select * from A) a where rownum <= endRow) b where linenum >= startRow

Mayer 2006-09-13 23:13 发表评论

JDOM 读取 internet 上的 xml 文档

Mayer — Thu, 31 Aug 2006 14:41:00 GMT

有好几个月没写代码了，最近有个项目需要透过 internet 动态去网上读取 xml 数据，带的小弟还没类似经验，所以花了几分钟写了段示例代码：

import org.jdom.input.SAXBuilder;
import org.jdom.Document;
import org.jdom.Element;
import java.net.URL;

public class XML
{
     public static void main(String[] args)
     {
         try
         {
            SAXBuilder sax = new SAXBuilder();
            URL url = new URL(" http://www.dsd.com/dsd.xml" );
            Document doc = sax.build(url);
            Element root = doc.getRootElement();
            Element row = root.getChild( " Row " );
            String jtsl = row.getChildTextTrim( " JTSJ " );
            String jtbj = row.getChildTextTrim( " JTBJ " );
            String xjsj = row.getChildTextTrim( " XJSJ " );
            String xjbj = row.getChildTextTrim( " XJBJ " );
            System.out.println(jtsl);
        }
         catch (Exception e)
         {
            e.printStackTrace();
        }

    }
}

Mayer 2006-08-31 22:41 发表评论

Java 读取 Properties 文件 7 种方法

Mayer — Thu, 31 Aug 2006 13:52:00 GMT

1. java.util.Properties.load()

InputStream in = new BufferedInputStream( new FileInputStream(filename));
Properties pro = new Properties();
pro.load(in);

2. java.util.ResourceBundle.getBundle()

ResourceBundle rb = ResourceBundle.getBundle(filename, Local.getDefault());

3. java.util.PropertyResourceBundle

InputStream in = new BufferedInputStream(new FileInputStream(filename));
ResourceBundle prb = newPropertyResourceBundle(in);

4. java.lang.Class.getResourceAsStream()

InputStream in = JProperties.class.getResourceAsStream(filename));
Property pro = new Property();
pro.load(in);

5. java.lang.Class.getClassLoader().getResourceAsStream()

InputStream in = JProperties.class.getClassLoader().getResourceAsStream(filename));
Property pro = new Property();
pro.load(in);

6. java.lang.ClassLoader.getSystemResourceAsStream()

InputStream in = ClassLoader().getSystemResourceAsStream(filename));
Property pro = new Property();
pro.load(in);

7. javax.servlet.ServletContext.getResourceAsStream()

InputStream in = context.getResourceAsStream(filename));
Property pro = new Property();
pro.load(in);

Mayer 2006-08-31 21:52 发表评论