JAVA 7种方法获取Properties的值

package com.lpc.util;import java.io.BufferedInputStream;import java.io.FileInputStream;import java.io.IOException;import java.io.InputStream;import java.util.Properties;import java.util.PropertyResourceBundle;import java.util.ResourceBundle;import com.sun.jmx.defaults.JmxProperties;import com.sun.org.apache.commons.beanutils.locale.LocaleBeanUtils;/** * 7种方法获取Properties的值   * @author kakax * @date 2012-06-25 * @version 1.0 */public class PropertiesUtil {  /**  * 1、使用java.util.Properties 类的load()方法   * @param url  */    public static Properties getProperties_1(String url) throws IOException {       InputStream in = new BufferedInputStream(new FileInputStream(url));        Properties p = new Properties ();        p.load(in);        return p;    }            /**     * 2、使用java.util.ResourceBundle类的getBundle()方法     * @param url     * @return     */    public static ResourceBundle getProperties_2(String url) {        ResourceBundle rb = ResourceBundle.getBundle(url, LocaleBeanUtils.getDefaultLocale());         return rb;        //rb.getString(key)     }        /**     * 3、使用java.util.PropertyResourceBundle类的构造函数      * @param url     * @return     * @throws IOException     */    public static ResourceBundle getProperties_3(String url) throws IOException {        InputStream in = new BufferedInputStream(new FileInputStream(url));         ResourceBundle rb = new PropertyResourceBundle(in);         return rb;     }        /**     * 4、使用class变量的getResourceAsStream()方法      * @param url     * @return     * @throws IOException     */    public static Properties getProperties_4(String url) throws IOException {        InputStream in = JmxProperties.class.getResourceAsStream(url);         Properties p = new Properties ();         p.load(in);        return p;     }    /**     * 5、使用class.getClassLoader()所得到的java.lang.ClassLoader的getResourceAsStream()方法      * @param url     * @return     * @throws IOException     */    public static Properties getProperties_5(String url) throws IOException {        InputStream in = JmxProperties.class.getClassLoader().getResourceAsStream(url);         Properties p = new Properties ();         p.load(in);         return p;     }        /**     * 6、使用java.lang.ClassLoader类的getSystemResourceAsStream()静态方法      * @param url     * @return     * @throws IOException     */    public static Properties getProperties_6(String url) throws IOException {        InputStream in = ClassLoader.getSystemResourceAsStream(url);         Properties p = new Properties ();         p.load(in);         return p;     }        //  补充     //  Servlet中可以使用javax.servlet.ServletContext的getResourceAsStream()方法     //  示例：    //  public static Properties getProperties_8(String url) {    //  InputStream in = context.getResourceAsStream(url);     //  Properties p = new Properties ();     //  p.load(in);     //  }}

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