html页面中如何将编码转换成中文的示例代码

private static String convertToChinese(String dataStr) {
 System.out.println("--------data str---->" + dataStr); 
 if(dataStr == null || dataStr.length() == 0) {
 return dataStr;
 }
 int start = 0;
 int end = 0;
 final StringBuffer buffer = new StringBuffer();
 while (start > -1) {
 int system = 10;// 进制
 if (start == 0) {
 int t = dataStr.indexOf("&#");
 if (start != t)
 start = t;
 if(start > 0) {
 buffer.append(dataStr.substring(0, start));
 }
 if(start == -1) {
 return dataStr;
 }
 }
 end = dataStr.indexOf(";", start + 2);
 String charStr = "";
 if (end != -1) {
 charStr = dataStr.substring(start + 2, end);
 // 判断进制
 char s = charStr.charAt(0);
 if (s == 'x' || s == 'X') {
 system = 16;
 charStr = charStr.substring(1);
 }
 // 转换
 try {
 char letter = (char) Integer.parseInt(charStr, system);
 buffer.append(new Character(letter).toString());
 } catch (NumberFormatException e) {
 e.printStackTrace();
 }
 }
 
 // 处理当前unicode字符到下一个unicode字符之间的非unicode字符
 start = dataStr.indexOf("&#", end);
 if (start - end > 1) {
 buffer.append(dataStr.substring(end + 1, start));
 }
 // 处理最后面的非 unicode字符
 if (start == -1) {
 int length = dataStr.length();
 if (end + 1 != length) {
 buffer.append(dataStr.substring(end + 1, length));
 }
 }
 }
 return buffer.toString();
 }