Java 字符串的 处理

 public class StringUtil
{
public static String convertToStringWithTrim(Object object)
{
if(null == object)
{
return null;
}

String returnStr = (String)object;

return Trim(returnStr);
}
public static String Trim(String str)
{
if(IsEmpty(str))
{
return str;
}

return str.trim();
}
public static boolean IsEmpty(String str)
{
if(null == str || str.length() == 0)
{
return true;
}

return false;
}
/**
* 将字符串包装成XML格式
*/
public static String PackIntoXMLStr(String target)
{
return "<i>" + target + "</i>";
}
/**
* 将字符串包装成XML格式
*/
public static String PackIntoXMLStrWithIndex(String target, String index)
{
return "<v i=\""+index+"\">"+ (target == null ? "": target) + "</v>";
}

public static String bytesToHexString(byte[] src)
{
StringBuilder stringBuilder = new StringBuilder("");
if (src == null || src.length <= 0)
{
return null;
}

for (int i = src.length; i >=0 ; i--)
{
if(src[i] != 0)
{
int v = src[i] & 0xFF;
String hv = Integer.toHexString(v);
if (hv.length() < 2)
{
stringBuilder.append(0);
}
stringBuilder.append(hv);
}
}
return stringBuilder.toString();
}
}