读取 properties 文件的几种方法

rainnguy

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);
摘自：http://blog.csdn.net/senton/archive/2009/04/16/4083127.aspx

2:读取properties 的自测例子

import java.io.FileInputStream;
import java.io.InputStream;
import java.util.Properties;

public class TestProperty {

private InputStream is;// 用于读取（.properties）文件

private Properties prop = new Properties();

private String propPath = "C:\\Documents and Settings\\henry_wang01\\test.properties";

public String getProperties(String key) throws Exception {

is = new FileInputStream(propPath);
prop.load(is);
return prop.getProperty(key);
}

public static void main(String[] args) {
TestProperty tp = new TestProperty();
String str;
try {
str = tp.getProperties("name");
System.out.println(str);
} catch (Exception e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}

}
}