java字符串和字节数组之间的转换

package com.sunjing.util;

import java.io.UnsupportedEncodingException;

/**

* 将Byte转换为String 或者将String转换为Byte

*

* @author Administrator

*

*/

public class ByteOrStringHelper {

/**

* 默认的字符集编码

* UTF-8 一个汉字占三个字节

*/

private static String CHAR_ENCODE = "UTF-8";

/**

* 设置全局的字符编码

* @param charEncode

*/

public static void configCharEncode(String charEncode){

CHAR_ENCODE = charEncode;

}

/**

* @param str 源字符串转换成字节数组的字符串

* @return

*/

public static byte[] StringToByte(String str) {

return StringToByte(str,CHAR_ENCODE);

}

/**

*

* @param srcObj 源字节数组转换成String的字节数组

* @return

*/

public static String ByteToString(byte[] srcObj) {

return ByteToString(srcObj,CHAR_ENCODE);

}

/**

* UTF-8 一个汉字占三个字节

* @param str 源字符串

* 转换成字节数组的字符串

* @return

*/

public static byte[] StringToByte(String str,String charEncode) {

byte[] destObj = null;

try {

if(null == str || str.trim().equals("")){

destObj = new byte[0];

return destObj;

}else{

destObj = str.getBytes(charEncode);

}

} catch (UnsupportedEncodingException e) {

e.printStackTrace();

}

return destObj;

}

/**

* @param srcObj 源字节数组转换成String的字节数组

* @return

*/

public static String ByteToString(byte[] srcObj,String charEncode) {

String destObj = null;

try {

destObj = new String(srcObj,charEncode);

} catch (UnsupportedEncodingException e) {

e.printStackTrace();

}

return destObj.replaceAll("\0"," ");

}

}