字符串中的生僻字在传输和存储的过程中存在着各种各样的问题，为了便于传输和存储，我们通常会把这些生僻字转换为16进制编码进行传输和存储。
package com.dc.util;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.Charset;
import java.util.HashMap;
import java.util.Map;
public class RareWordUtil {
private static Map nameToValue;
private static Map valueToName;
private String fileName = "gbk.txt";
private String fileEncoding = "GBK";
private final String preFix = "■△";
private static final RareWordUtil cr_instance = new RareWordUtil();
private RareWordUtil() {
try {
init();
} catch (IOException e) {
System.out.println(e.getMessage());
}
}
public static RareWordUtil getInstance() {
return cr_instance;
}
@SuppressWarnings( { "static-access", "unchecked" })
private void init() throws IOException {
if (nameToValue != null && valueToName != null) {
return;
}
InputStream input = RareWordUtil.class.getResourceAsStream(fileName);
InputStreamReader inputsr = new InputStreamReader(input, Charset.forName(fileEncoding));
BufferedReader br = new BufferedReader(inputsr);
this.nameToValue = new HashMap();
this.valueToName = new HashMap();
String line = null;
while ((line = br.readLine()) != null) {
String ret = new String(line.getBytes(fileEncoding), fileEncoding);
String key = ret.substring(0, 1);
String value = ret.substring(line.length() - 4, line.length());
this.nameToValue.put(key, value);
this.valueToName.put(value, key);
}
}
@SuppressWarnings("static-access")
public String getRareWord(String value) {
StringBuffer sb = new StringBuffer();
int pos = -1;
while ((pos = value.indexOf(preFix)) != -1) {
sb.append(value.substring(0, pos));
String code = value.substring(pos + preFix.length(), pos + preFix.length() + 4);
String codeValue = this.valueToName.get(code);
sb.append(codeValue);
value = value.substring(pos + preFix.length() + 4, value.length());
}
sb.append(value);
return sb.toString();
}
@SuppressWarnings("static-access")
public String getHex(String name) {
StringBuffer sb = new StringBuffer();
for (int i = 0; i < name.length(); i++) {
String value = this.nameToValue.get(name.substring(i, i + 1));
if (value == null) {
sb.append(name.substring(i, i + 1));
} else {
sb.append(preFix + value);
}
}
return sb.toString();
}
public static void main(String[] args) {
RareWordUtil cu = RareWordUtil.getInstance();
String name = "王喆昊";
name = cu.getHex(name);
System.out.println("Cent2Dollar(1) = " + name);
name = cu.getRareWord(name);
System.out.println("Cent2Dollar(1) = " + name);
}
}
代码中用的的txt文件见附件。
