使用J2SEAPI读取Properties文件的方法

 　1、使用java.util.Properties类的load()方法

　　示例：

　　cellspacing="0" cellpadding="2" bordercolorlight = "black" bordercolordark = "#FFFFFF" align="center"> InputStream in = 
(new FileInputStream(name));
p.load(in);

　　2、使用java.util.ResourceBundle类的getBundle()方法

　　示例： 

　　ResourceBundle rb =
Locale.getDefault());

　　3、使用java.util.PropertyResourceBundle类的构造函数

　　示例： 

　　InputStream in = 
ResourceBundle rb =

　　4、使用class变量的getResourceAsStream()方法

　　示例： 

　　InputStream in = 
Properties p = new Properties();

　　5、使用class.getClassLoader()所得到的java.lang.ClassLoader的getResourceAsStream()方法

　　示例： 

　　InputStream in = 
.getResourceAsStream(name);
p.load(in);

　　6、使用java.lang.ClassLoader类的getSystemResourceAsStream()静态方法

　　示例： 

　　InputStream in = 
Properties p = new Properties();

　　补充

　　Servlet中可以使用javax.servlet.ServletContext的getResourceAsStream()方法

　　示例： 

　　InputStream in = 
Properties p = new Properties();

　　JProperties.java文件 

　　/**
** 
/or modify it under the terms of the GNU
published by the Free Software Foundation.
be included with this distribution in
License.html. If the license is not
you may find a copy at the FSF web
'www.fsf.org', or you may write to the
675 Mass Ave, Cambridge, MA 02139 USA.
** THIS SOFTWARE IS PROVIDED
** NOT EVEN THE IMPLIED WARRANTY
** OF THIS SOFTWARE, ASSUMES
** CONSEQUENCE RESULTING FROM
** REDISTRIBUTION OF THIS SOFTWARE. 

　　package com.kindani;

　　//import javax.servlet.ServletContext;
import java.io.InputStream;
import java.io.BufferedInputStream;

　　/**
* User: SYNFORM
* Time: 18:40:55
| Settings | File Templates.
public class JProperties 
BY_PROPERTIES = 1;
BY_RESOURCEBUNDLE = 2;
BY_PROPERTYRESOURCEBUNDLE = 3;
BY_CLASS = 4;
BY_CLASSLOADER = 5;
BY_SYSTEM_CLASSLOADER = 6;

　　 public final static Properties 
final int type) throws IOException 
Properties p = new Properties();
if (type == BY_PROPERTIES)
in = new BufferedInputStream
assert (in != null);
} else if (type == BY_RESOURCEBUNDLE) 
ResourceBundle rb = 
Locale.getDefault());
p = new ResourceBundleAdapter(rb);
else if
{
(new FileInputStream(name));
ResourceBundle rb =
p = new ResourceBundleAdapter(rb);
else if (type == BY_CLASS)
assert (JProperties.class.equals(new JProperties().getClass()));
getResourceAsStream(name);
p.load(in);
getResourceAsStream(name);
{
getClassLoader().equals
getClassLoader()));

assert (in != null);
// return new JProperties().getClass().
} else if (type == BY_SYSTEM_CLASSLOADER)
in = ClassLoader.
assert (in != null);
}

　　 if (in != null) 
in.close();
return p;

　　 }

　　 //servlet used
public static Properties loadProperties
throws IOException 
assert (context != null);
getResourceAsStream(path);
Properties p = new Properties();
in.close();
}

　　 //support class

　　 /**
*/
ResourceBundleAdapter extends Properties
public ResourceBundleAdapter
{
java.util.PropertyResourceBundle);
java.util.Enumeration e = rb.getKeys();
{
this.put(o, rb.getObject((String) o));
}||| 　　 private ResourceBundle rb = null;

　　 public ResourceBundle 
{
}

　　 public ResourceBundle getBundle
{
(baseName, locale);

　　 public ResourceBundle 
ClassLoader loader) 
return ResourceBundle.getBundle
}

　　 public Enumeration getKeys()
return rb.getKeys();

　　 public Locale getLocale() 
return rb.getLocale();

　　 public Object getObject(String key) 
return rb.getObject(key);

　　 public String getString(String key) 
return rb.getString(key);

　　 public String getStringArray(String key) 
return rb.getStringArray(key);

　　 protected Object handleGetObject(String key) 
return ((PropertyResourceBundle)
}

　　 }

　　}

　　JPropertiesTest.java文件 

　　/**
** 
or modify it under the terms of the GNU
published by the Free Software Foundation.
be included with this distribution in
License.html. If the license is not
you may find a copy at the FSF web
or you may write to the
675 Mass Ave, Cambridge, MA 02139 USA.
** THIS SOFTWARE IS PROVIDED 
** NOT EVEN THE IMPLIED WARRANTY 
** OF THIS SOFTWARE, ASSUMES 
** CONSEQUENCE RESULTING FROM 
** REDISTRIBUTION OF THIS SOFTWARE. 
package com.kindani.test;

　　import junit.framework.*;

　　//import javax.servlet.ServletContext;

　　public class JPropertiesTest extends TestCase 
JProperties jProperties;
String value = "Hello World!";

　　 public void testLoadProperties() 
String name = null;
name = "C:""IDEAP""Properties4Methods
""LocalStrings.properties";
(name, JProperties.BY_PROPERTIES);
(value, p.getProperty(key));
p = JProperties.loadProperties(name,
assertEquals(value, p.getProperty(key));
((JProperties.ResourceBundleAdapter)p)
name = "C:""IDEAP""Properties4Methods""
LocalStrings.properties";
assertEquals(value, p.getProperty(key));
((JProperties.ResourceBundleAdapter)p).
LocalStrings.properties";
assertEquals(value, p.getProperty(key));

　　 name = """com""kindani""test""
p = JProperties.loadProperties(name, JProperties.BY_CLASSLOADER);

　　 name = "test""LocalStrings.properties";
JProperties.BY_CLASS);
}

　　/*
throws Exception 
ServletContext context = null;
Properties p = null;
/LocalStrings.properties";
assertEquals(value, p.getProperty(key));
*/
properties文件与JPropertiesTest.
LocalStrings.properties文件
v 1.1 2000/08/17 00:57:52 horwat Exp $

　　# Default localized resources
# This locale is en_US

　　helloworld.title=Hello World!

　　requestinfo.title=Request 
requestinfo.label.method=Method:
requestinfo.label.protocol=Protocol:
requestinfo.label.remoteaddr=Remote Address:

　　requestheader.title=Request Header Example

　　requestparams.title=Request
requestparams.params-in-req=Parameters
requestparams.no-params=No Parameters,
requestparams.firstname=First Name:

　　cookies.title=Cookies Example
sending the following cookies:
isn't sending any cookies
cookie to send to your browser
cookies.value=Value:
following cookie to your browser:

　　sessions.title=Sessions Example
sessions.created=Created:
Last Accessed:
data is in your session:
to your session
Session Attribute:
of Session Attribute: