properties使用

properties可以load store

注释可以采用 "#" 或者"!"

分隔采用"="或者":"

分行采用" "

由于property类继承的是hashtable，可以采用put putall 但是不推荐

/**
     * @param args
     * @throws IOException 
     */
    public static void main(String[] args) throws IOException {
        // TODO Auto-generated method stub
        Properties props = new Properties();
        InputStream input = new FileInputStream(new File("D:/javaDevelop/oddjob-1.4.0-SNAPSHOT-src/oddjob-src/oddjob/src/target/classes/my.properties"));
        
        props.load(input);
        input.close();
        System.out.println(props.getProperty("aa"));
        System.out.println(props.getProperty("bb"));
        System.out.println(props.getProperty("cc"));
        OutputStream os =System.out;
        props.storeToXML(os, "fdasfsa");
        props.store(os, "putong");
        props.list(System.out);
    }

package com.zuidaima;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Properties;

public class Main {

    public static void main(String[] args) {
        Properties property = new Properties();
        try {
            File file = new File("c:/db.properties");
            if (!file.exists()) {
                file.createNewFile();
            }
            // 写入
            property.setProperty("database", "localhost");
            property.setProperty("user", "zuidaima");
            property.setProperty("password", "password");
            property.store(new FileOutputStream(file), null);

            property.load(new FileInputStream(file));

            // 读取
            System.out.println(property.getProperty("database"));
            System.out.println(property.getProperty("user"));
            System.out.println(property.getProperty("password"));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}