package com.lxk.propertyFileTest; 
 
import java.io.*; 
import java.util.Properties; 
 
/** 
 * 读写properties文件测试 
 * <p> 
 * Created by lxk on 2017/4/25 
 */ 
public class Main { 
  public static void main(String[] args) { 
    Properties prop = new Properties(); 
    InputStream in = null; 
    FileOutputStream oFile = null; 
    try { 
      in = new BufferedInputStream(new FileInputStream("D:config.properties")); 
      //prop.load(in);//直接这么写，如果properties文件中有汉子，则汉字会乱码。因为未设置编码格式。 
      prop.load(new InputStreamReader(in, "utf-8")); 
      for (String key : prop.stringPropertyNames()) { 
        System.out.println(key + ":" + prop.getProperty(key)); 
      } 
      //保存属性到b.properties文件 
      oFile = new FileOutputStream("b.properties", false);//true表示追加打开,false每次都是清空再重写 
 
      prop.setProperty("phone", "10086"); 
      //prop.store(oFile, "此参数是保存生成properties文件中第一行的注释说明文字");//这个会两个地方乱码 
      //prop.store(new OutputStreamWriter(oFile, "utf-8"), "汉字乱码");//这个就是生成的properties文件中第一行的注释文字乱码 
      prop.store(new OutputStreamWriter(oFile, "utf-8"), "lll"); 
    } catch (Exception e) { 
      System.out.println(e.getMessage()); 
    } finally { 
      if (in != null) { 
        try { 
          in.close(); 
        } catch (IOException e) { 
          System.out.println(e.getMessage()); 
        } 
      } 
      if (oFile != null) { 
        try { 
          oFile.close(); 
        } catch (IOException e) { 
          System.out.println(e.getMessage()); 
        } 
      } 
    } 
  } 
} 

package com.lxk.propertyFileTest; 
 
import java.io.*; 
import java.util.Properties; 
 
/** 
 * 读写properties文件测试 
 * <p> 
 * Created by lxk on 2017/4/25 
 */ 
public class Main { 
  public static void main(String[] args) { 
    Properties prop = readPropertiesFile(); 
    writePropertiesFile(prop); 
  } 
 
  /** 
   * 读Properties文件 
   */ 
  private static Properties readPropertiesFile() { 
    Properties prop = new Properties(); 
    InputStream in = null; 
    try { 
      in = new BufferedInputStream(new FileInputStream("D:config.properties")); 
      //prop.load(in);//直接这么写，如果properties文件中有汉子，则汉字会乱码。因为未设置编码格式。 
      prop.load(new InputStreamReader(in, "utf-8")); 
      for (String key : prop.stringPropertyNames()) { 
        System.out.println(key + ":" + prop.getProperty(key)); 
      } 
    } catch (Exception e) { 
      System.out.println(e.getMessage()); 
    } finally { 
      if (in != null) { 
        try { 
          in.close(); 
        } catch (IOException e) { 
          System.out.println(e.getMessage()); 
        } 
      } 
    } 
    return prop; 
  } 
 
  /** 
   * 写Properties文件 
   */ 
  private static void writePropertiesFile(Properties prop) { 
    prop.setProperty("phone", "10086"); 
    FileOutputStream oFile = null; 
    try { 
      //保存属性到b.properties文件 
      oFile = new FileOutputStream("b.properties", false);//true表示追加打开,false每次都是清空再重写 
      //prop.store(oFile, "此参数是保存生成properties文件中第一行的注释说明文字");//这个会两个地方乱码 
      //prop.store(new OutputStreamWriter(oFile, "utf-8"), "汉字乱码");//这个就是生成的properties文件中第一行的注释文字乱码 
      prop.store(new OutputStreamWriter(oFile, "utf-8"), "lll"); 
    } catch (Exception e) { 
      System.out.println(e.getMessage()); 
    } finally { 
      if (oFile != null) { 
        try { 
          oFile.close(); 
        } catch (IOException e) { 
          System.out.println(e.getMessage()); 
        } 
      } 
    } 
  } 
 
}