完整的示例:
JPropertIEs.Java文件
package com.kindani;
//import Javax.servlet.ServletContext;
import Java.util.*;
import Java.io.InputStream;
import Java.io.IOException;
import Java.io.BufferedInputStream;
import Java.io.FileInputStream;
/**
* 使用J2SE API?取PropertIEs文件的六種方法
* User: SYNFORM
* Date: 2005/07/12
* Time: 18:40:55
* To change this template use File | Settings | File Templates.
*/
public class JPropertIEs {
public final static int BY_PROPERTIES = 1;
public final static int BY_RESOURCEBUNDLE = 2;
public final static int BY_PROPERTYRESOURCEBUNDLE = 3;
public final static int BY_CLASS = 4;
public final static int BY_CLASSLOADER = 5;
public final static int BY_SYSTEM_CLASSLOADER = 6;
public final static Properties loadPropertIEs(
final String name, final int type) throws IOException {
Properties p = new PropertIEs();
InputStream in = null;
if (type == BY_PROPERTIES) {
in = new BufferedInputStream(new FileInputStream(name));
assert (in != null);
p.load(in);
} else if (type == BY_RESOURCEBUNDLE) {
ResourceBundle rb = ResourceBundle.getBundle(name, Locale.getDefault());
assert (rb != null);
p = new ResourceBundleAdapter(rb);
} else if (type == BY_PROPERTYRESOURCEBUNDLE) {
in = new BufferedInputStream(new FileInputStream(name));
assert (in != null);
ResourceBundle rb = new PropertyResourceBundle(in);
p = new ResourceBundleAdapter(rb);
} else if (type == BY_CLASS) {
assert (JProperties.class.equals(new JPropertIEs().getClass()));
in = JPropertIEs.class.getResourceAsStream(name);
assert (in != null);
p.load(in);
//return new JPropertIEs().getClass().getResourceAsStream(name);
} else if (type == BY_CLASSLOADER) {
assert (JPropertIEs.class.getClassLoader().equals(
new JPropertIEs().getClass().getClassLoader()));
in = JPropertIEs.class.getClassLoader().getResourceAsStream(name);
assert (in != null);
p.load(in);
//return new JPropertIEs().getClass().
getClassLoader().getResourceAsStream(name);
} else if (type == BY_SYSTEM_CLASSLOADER) {
in = ClassLoader.getSystemResourceAsStream(name);
assert (in != null);
p.load(in);
}
if (in != null) {
in.close();
}
return p;
}
// ---------------------------------------------- servlet used
/*
public static Properties loadPropertIEs(
ServletContext context, String path) throws IOException {
assert (context != null);
InputStream in = context.getResourceAsStream(path);
assert (in != null);
Properties p = new PropertIEs();
p.load(in);
in.close();
return p;
}
*/
// ---------------------------------------------- support class
/**
* ResourceBundle Adapter class.
*/
public static class ResourceBundleAdapter extends PropertIEs {
public ResourceBundleAdapter(ResourceBundle rb) {
assert (rb instanceof Java.util.PropertyResourceBundle);
this.rb = rb;
Java.util.Enumeration e = rb.getKeys();
while (e.hasMoreElements()) {
Object o = e.nextElement();
this.put(o, rb.getObject((String) o));
}
}
private ResourceBundle rb = null;
public ResourceBundle getBundle(String baseName) {
return ResourceBundle.getBundle(baseName);
}
public ResourceBundle getBundle(String baseName, Locale locale) {
return ResourceBundle.getBundle(baseName, locale);
}
public ResourceBundle getBundle(String baseName,
Locale locale, ClassLoader loader) {
return ResourceBundle.getBundle(baseName, locale, loader);
}
public Enumeration<String> 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) rb).handleGetObject(key);
}
}
}
