package com.hzk.utils;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.util.Enumeration;
import java.util.Properties;
public class PropertiesTools {
public static void writeProperties(String filePath, String parameterName,
String parameterValue) {
Properties props = new Properties();
try {
File f = new File(filePath);
if (f.exists()) {
InputStream fis = new FileInputStream(filePath);
props.load(fis);
fis.close();
} else {
System.out.println(filePath);
f.createNewFile();
}
OutputStream fos = new FileOutputStream(filePath);
props.setProperty(parameterName, parameterValue);
props.store(fos, "");
fos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
public static Properties readProperties(String filePath) {
Properties props = new Properties();
InputStream is;
try {
is = new FileInputStream(filePath);
props.load(is);
is.close();
return props;
} catch (Exception e1) {
e1.printStackTrace();
return null;
}
}
/**
* 寫之前將編碼轉為iso-8859-1,.propertise的默認編碼
* @param data
* @return
*/
public static String iso2utf8(String data){
String result = "";
try {
result = new String(data.getBytes("iso-8859-1"), "utf-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return result;
}
/**
* 讀數據的時候轉碼為utf-8，便於讀取
* @param data
* @return
*/
public static String utf82iso(String data){
String result = null;
try {
result = new String(data.getBytes("utf-8"), "iso-8859-1");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return result;
}
public static void main(String[] args) {
PropertiesTools.writeProperties("d:\\datas.properties", utf82iso("name"), utf82iso("tom"));
PropertiesTools.writeProperties("d:\\datas.properties", utf82iso("好這口"),utf82iso("hzk"));
PropertiesTools.writeProperties("d:\\datas.properties", utf82iso("hk"),utf82iso("戶口"));
Properties props = PropertiesTools.readProperties("d:\\datas.properties");
Enumeration en = props.keys();
while (en.hasMoreElements()) {
String key = (String) en.nextElement();
String keyDecode = iso2utf8(key);
String value =iso2utf8((String) props.getProperty(key));
System.out.println("key:"+keyDecode+" value:"+value);
}
}
}
如上面代碼所示，注意新建的properties文件的默認編碼是iso-8859-1，所以想讀寫中文數據，都要轉碼，對於中文會顯示成一下形式，見datas.properties：
#
#Sat Jun 14 15:38:10 CST 2014
hk=\u00E6\u0088\u00B7\u00E5\u008F\u00A3
name=tom
\u00E5\u00A5\u00BD\u00E8\u00BF\u0099\u00E5\u008F\u00A3=hzk
如果在myeclipse中保存為utf-8形式，再次可以手動輸入中文就可以，但是下次一經代碼寫入再打開又會變為iso-8859-1的亂碼，很是蛋疼，所以要看中文可以通過代碼讀取轉為utf-8，或者僅僅先存為utf-8格式，編輯中文，不要代碼寫入中文就可以
