java String 编码格式转换

// TODO 目前使用ISO8859-1编码作为输入！
private String convertEncoding(String requestXML) {
String temp = "";
try {
temp = new String(requestXML.getBytes("ISO8859-1"), "UTF-8");
} catch (UnsupportedEncodingException e) {
Assert.state(false, e.getMessage());
}
return temp;
}


public class ConvertToolUtils {

public static String gbk2iso(String src) {
return convertEncoding(src, "GBK", "ISO-8859-1");
}

public static String iso2gbk(String src) {
return convertEncoding(src, "ISO-8859-1", "GBK");
}

public static String convertEncoding(String source, String sourceEncoding, String targetEncoding) {
try {
if (source == null || source.equals("")) {
return "";
} else {
return new String(source.getBytes(sourceEncoding), targetEncoding);
}
} catch (Exception e) {
return "";
}
}

public static int ConvertStrNum2IntNum(String strNum) {
int Num = 0;
try {
if (null == strNum || strNum.trim().equals("")) {
Num = 0;
} else {
Num = Integer.parseInt(strNum);
}

} catch (Exception e) {
Num = 0;
e.printStackTrace();
}
return Num;
}

}

使用方式：
requestXML = ConvertToolUtils.convertEncoding(requestXML,"ISO8859-1","UTF-8");