import java.io.InputStream;
import java.util.Properties;
/**
*
* CopyRight (C) www.blogjava.net/ilovezmh All rights reserved.<p>
*
* WuHan Inpoint Information Technology Development,Inc.<p>
*
* Author zhu<p>
*
* @version 1.0 2007-2-2
*
* <p>Base on : JDK1.5<p>
*
*/
public class ReadPro {
public String getPara(String fileName) {
Properties prop= new Properties();
try {
//ClassLoader cl = this.getClass().getClassLoader();
//InputStream is = cl.getResourceAsStream(fileName);
InputStream is = this.getClass().getResourceAsStream(fileName);
prop.load(is);
if(is!=null) is.close();
}
catch(Exception e) {
System.out.println(e+"file "+fileName+" not found");
}
return prop.getProperty("ip");
}
public static void main(String[] args) {
ReadPro pro = new ReadPro();
System.out.println(pro.getPara("ip.property"));
}
//-----------------------------------
//ip.property內(nèi)容如下：
//ip:192.168.0.1
}
注意：上面使用Class和ClassLoader都是可以的，只是使用的時(shí)候路徑需要注意下
Class是把class文件所在的目錄做為根目錄，
ClassLoader是把加載所有classpath的目錄為根目錄，也就是“..../classes”。
如：
使用ClassLoader：this.getClass().getClassLoader().getResourceAsStream("com/test/ip.property");
使用Class：this.getClass().getResourceAsStream("/com/test/ip.property");
如果類與配置文件在同一目錄下，也可
this.getClass().getResourceAsStream("ip.property");
用jdom讀xml文件的例子：
(jdom下載)
package com.test;
import java.io.*;
import java.util.*;
import org.jdom.*;
import org.jdom.input.*;
import org.jdom.output.XMLOutputter;
import org.jdom.output.Format;
/**
*
* CopyRight (C) www.blogjava.net/ilovezmh All rights reserved.<p>
*
* WuHan Inpoint Information Technology Development,Inc.<p>
*
* Author zhu<p>
*
* @version 1.0 2007-2-1
*
* <p>Base on : JDK1.5<p>
*
*/
public class XMLReader {
public void createXML(){
Element root=new Element("books");
Document doc=new Document(root);
Element book1 = new Element("book");
//Element name1=new Element("name");
//name1.setAttribute(new Attribute("hot","true"));
//name1.addContent("程序員");
//Element price1=new Element("price");
//price1.addContent("10.00");
//book1.addContent(name1);
//book1.addContent(price1);
Element book2 = new Element("book");
//Element name2=new Element("name");
//name2.setAttribute(new Attribute("hot","false"));
//name2.addContent("讀者");
//Element price2=new Element("price");
//price2.addContent("3.00");
//book2.addContent(name2);
//book2.addContent(price2);
book1.addContent(new Element("name").addContent("程序員").setAttribute("hot","true"));
book1.addContent(new Element("price").addContent("10.00"));
book2.addContent(new Element("name").addContent("青年文摘").setAttribute("hot","false"));
book2.addContent(new Element("price").addContent("3.00"));
root.addContent(book1);
root.addContent(book2);
try
{
XMLOutputter outer=new XMLOutputter(Format.getPrettyFormat().setEncoding("gb2312"));
outer.output(doc,new FileOutputStream("book.xml"));
}catch(IOException e){
e.printStackTrace();
}
}
public void readXML() throws FileNotFoundException, IOException{
Document myDoc=null;
try
{
SAXBuilder sb=new SAXBuilder();
myDoc=sb.build(new FileInputStream("book.xml"));
}catch(JDOMException e){
e.printStackTrace();
}catch(NullPointerException e){
e.printStackTrace();
}
Element root=myDoc.getRootElement(); //先得到根元素
List books=root.getChildren();//root.getChildren("book");
for (Iterator iter1 = books.iterator();iter1.hasNext(); ) {
Element book = (Element) iter1.next();
System.out.println("bookname:"+book.getChild("name").getText());
System.out.println("hot:"+book.getChild("name").getAttributeValue("hot"));
System.out.println("price:"+book.getChild("price").getText());
}
}
public static void main(String args[]) throws FileNotFoundException, IOException {
XMLReader x=new XMLReader();
x.createXML();
x.readXML();
}
}
生成的book.xml文件如下:
<?xml version="1.0" encoding="gb2312"?>
<books>
<book>
<name hot="true">程序員</name>
<price>10.00</price>
</book>
<book>
<name hot="false">青年文摘</name>
<price>3.00</price>
</book>
</books>
