1、需求:用java读取e:\demo.properties配置文件
username=root
password=12345
address=beijing
2、涉及到Properties这个类:
package com.insigma.zd.group4.liuchao.languagebase;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.Iterator;
import java.util.Properties;
public class PropertiesDemo {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Properties pro = new Properties();
try {
FileInputStream fis = new FileInputStream("e:/demo.properties");
try {
pro.load(new InputStreamReader(fis,"gbk"));
Iterator<Object> it = pro.keySet().iterator();
while(it.hasNext()){
Object key = it.next();
System.out.println(key+"="+pro.get(key));
}
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
3、Properties的load()方法读取InputStream,读取properties文件,然后用迭代器循环输出key和value。
4、国际化方面也会用到properties文件