今天为了通过java读取properties文件,google了很长时间,终于找到了。现在特记录之和大家一起分享。
下面直接贴出代码:java类
publicclass Mytest publicstaticvoidreadFile(String fileName) {//传入参数fileName是要读取的资源文件的文件名如(file.properties) InputStream in =null;
Properties pros =new Properties();
try {
if(null!= fileName) { //前提是资源文件必须和Mytest类在同一个包下 in = Mytest.class.getResourceAsStream(fileName); //得到当前类的路径,并把资源文件名作为输入流 pros.load(in);
Enumeration en = pros.propertyNames();//得到资源文件中的所有key值 while (en.hasMoreElements()) {
String key = (String) en.nextElement();
System.out.println("key=" + key + " value=" + pros.getProperty(key)); //输出资源文件中的key与value值 }
}
} catch (IOException e) {
e.printStackTrace();
System.out.println("读取资源文件出错");
} finally {
try {
if(null!= in) {
in.close();
}
} catch (IOException e) {
e.printStackTrace();
System.out.println("关闭流失败");
}
}
}
方法二:
import java.util.MissingResourceException; import java.util.ResourceBundle;
publicclass Messages {
privatestaticfinalString BUNDLE_NAME = "com.xxx.cs.mm.service.messages";//messages.properties文件和Messages类在同一个包下,包名:com.xxx.cs.mm.service privatestaticfinalResourceBundle RESOURCE_BUNDLE = ResourceBundle.getBundle(BUNDLE_NAME);
private Messages() {
}
publicstatic String getString(String key) {
try {
return RESOURCE_BUNDLE.getString(key);
} catch (MissingResourceException e) {
return'!' + key + '!';
}
}
}
转自:http://duqiangcise.iteye.com/blog/319793
使用J2SE API读取Properties文件的六种方法
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);
注意:
this.getclass.getResourceAsStream(name); //类与资源文件同级--同一个目录下
this.class.getClassLoader().getResourceAsStream(name); //资源文件与classpath同级。