1。使用java.util.Properties类的load()方法
示例: InputStream in = lnew BufferedInputStream(new FileInputStream(name));
Properties p = new Properties();
p.load(in);
2。使用java.util.ResourceBundle类的getBundle()方法
示例: ResourceBundle rb = ResourceBundle.getBundle(name, Locale.getDefault());
3。使用java.util.PropertyResourceBundle类的构造函数
示例: InputStream in = new BufferedInputStream(new FileInputStream(name));
ResourceBundle rb = new PropertyResourceBundle(in);
4。使用class变量的getResourceAsStream()方法
示例: InputStream in = JProperties.class.getResourceAsStream(name);
Properties p = new Properties();
p.load(in);
5。使用class.getClassLoader()所得到的ng.ClassLoader的getResourceAsStream()方法
示例: InputStream in = JProperties.class.getClassLoader().getResourceAsStream(name);
Properties p = new Properties();
p.load(in);
6。使用ng.ClassLoader类的getSystemResourceAsStream()静态方法
示例: InputStream in = ClassLoader.getSystemResourceAsStream(name);
Properties p = new Properties();
p.load(in);
补充
Servlet中可以使用javax.servlet.ServletContext的getResourceAsStream()方法
示例:InputStream in = context.getResourceAsStream(path);
Properties p = new Properties();
p.load(in);
JProperties.java文件
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().get
ResourceAsStream(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
// ---------------------------------------------- support 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);
}