使用J2SE API讀取Properties文件的六種方法
1。使用java.util.Properties類的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類的getBundle()方法
示例： ResourceBundle rb = ResourceBundle.getBundle(name, Locale.getDefault());
3。使用java.util.PropertyResourceBundle類的構造函數
示例： InputStream in = new BufferedInputStream(new FileInputStream(name));
?????? ResourceBundle rb = new PropertyResourceBundle(in);
4。使用class變量的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java.lang.ClassLoader的getResourceAsStream()方法
示例： InputStream in = JProperties.class.getClassLoader().getResourceAsStream(name);
?????? Properties p = new Properties();
?????? p.load(in);
6。使用java.lang.ClassLoader類的getSystemResourceAsStream()靜態方法
示例： InputStream in = ClassLoader.getSystemResourceAsStream(name);
?????? Properties p = new Properties();
?????? p.load(in);
補充
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);
完整的示例，可以參考附件文件
如何上傳文件，誰知道請告訴以下。 只好把source都貼上來了
JProperties.java文件
/**
** This program is free software.
**
** You may redistribute it and/or modify it under the terms of the GNU
** General Public License as published by the Free Software Foundation.
** Version 2 of the license should be included with this distribution in
** the file LICENSE, as well as License.html. If the license is not
** included with this distribution, you may find a copy at the FSF web
** site at ′www.gnu.org′ or ′www.fsf.org′, or you may write to the
** Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139 USA.
**
** THIS SOFTWARE IS PROVIDED AS-IS WITHOUT WARRANTY OF ANY KIND,
** NOT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY. THE AUTHOR
** OF THIS SOFTWARE, ASSUMES _NO_ RESPONSIBILITY FOR ANY
** CONSEQUENCE RESULTING FROM THE USE, MODIFICATION, OR
** REDISTRIBUTION OF THIS SOFTWARE.
**/
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読取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);
??????? }
??? }
}
JPropertiesTest.java文件
/**
** This program is free software.
**
** You may redistribute it and/or modify it under the terms of the GNU
** General Public License as published by the Free Software Foundation.
** Version 2 of the license should be included with this distribution in
** the file LICENSE, as well as License.html. If the license is not
** included with this distribution, you may find a copy at the FSF web
** site at ′www.gnu.org′ or ′www.fsf.org′, or you may write to the
** Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139 USA.
**
** THIS SOFTWARE IS PROVIDED AS-IS WITHOUT WARRANTY OF ANY KIND,
** NOT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY. THE AUTHOR
** OF THIS SOFTWARE, ASSUMES _NO_ RESPONSIBILITY FOR ANY
** CONSEQUENCE RESULTING FROM THE USE, MODIFICATION, OR
** REDISTRIBUTION OF THIS SOFTWARE.
**/
package com.kindani.test;
import junit.framework.*;
import com.kindani.JProperties;
//import javax.servlet.ServletContext;
import java.util.Properties;
public class JPropertiesTest extends TestCase {
??? JProperties jProperties;
??? String key = "helloworld.title";
??? String value = "Hello World!";
??? public void testLoadProperties() throws Exception {
??????? String name = null;
??????? Properties p = new Properties();
??????? name = "C:\\IDEAP\\Properties4Methods\\src\\com\\kindani\\test\\LocalStrings.properties";
??????? p = JProperties.loadProperties(name, JProperties.BY_PROPERTIES);
??????? assertEquals(value, p.getProperty(key));
??????? name = "com.kindani.test.LocalStrings";
??????? p = JProperties.loadProperties(name,JProperties.BY_RESOURCEBUNDLE);
??????? assertEquals(value, p.getProperty(key));
??????? assertEquals(value,((JProperties.ResourceBundleAdapter)p).getString(key));
??????? name = "C:\\IDEAP\\Properties4Methods\\src\\com\\kindani\\test\\LocalStrings.properties";
??????? p = JProperties.loadProperties(name, JProperties.BY_PROPERTYRESOURCEBUNDLE);
??????? assertEquals(value, p.getProperty(key));
??????? assertEquals(value,((JProperties.ResourceBundleAdapter)p).getString(key));
??????? name = "??????? p = JProperties.loadProperties(name, JProperties.BY_SYSTEM_CLASSLOADER);
??????? assertEquals(value, p.getProperty(key));
??????? name = "??????? p = JProperties.loadProperties(name, JProperties.BY_CLASSLOADER);
??????? assertEquals(value, p.getProperty(key));
??????? name = "test\\LocalStrings.properties";
??????? p = JProperties.loadProperties(name, JProperties.BY_CLASS);
??????? assertEquals(value, p.getProperty(key));
??? }
/*
??? public void testLoadProperties2() throws Exception {
??????? ServletContext context = null;
??????? String path = null;
??????? Properties p = null;
??????? path = "/WEB-INF/classes/LocalStrings.properties";
??????? p = JProperties.loadProperties(context, path);
??????? assertEquals(value, p.getProperty(key));
??? }
*/
}
properties文件與JPropertiesTest.java文件相同的目錄下
LocalStrings.properties文件
# $Id: LocalStrings.properties,v 1.1 2000/08/17 00:57:52 horwat Exp $
# Default localized resources for example servlets
# This locale is en_US
helloworld.title=Hello World!
requestinfo.title=Request Information Example
requestinfo.label.method=Method:
requestinfo.label.requesturi=Request URI:
requestinfo.label.protocol=Protocol:
requestinfo.label.pathinfo=Path Info:
requestinfo.label.remoteaddr=Remote Address:
requestheader.title=Request Header Example
requestparams.title=Request Parameters Example
requestparams.params-in-req=Parameters in this request:
requestparams.no-params=No Parameters, Please enter some
requestparams.firstname=First Name:
requestparams.lastname=Last Name:
cookies.title=Cookies Example
cookies.cookies=Your browser is sending the following cookies:
cookies.no-cookies=Your browser isn′t sending any cookies
cookies.make-cookie=Create a cookie to send to your browser
cookies.name=Name:
cookies.value=Value:
cookies.set=You just sent the following cookie to your browser:
sessions.title=Sessions Example
sessions.id=Session ID:
sessions.created=Created:
sessions.lastaccessed=Last Accessed:
sessions.data=The following data is in your session:
sessions.adddata=Add data to your session
sessions.dataname=Name of Session Attribute:
sessions.datavalue=Value of Session Attribute: