Java中文与ASCII码的转换

2进制转中文互转

package com.kingstar.mnReport.util;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * @ClassName AsciiConvertUtil
 * @Description
 * @Author xinsen.liao
 * @Date 2020/6/10  16:13
 */
public class AsciiConvertUtil {

    public static char ascii2Char(int ASCII) {
        return (char) ASCII;
    }

    public static int char2ASCII(char c) {
        return (int) c;
    }

    public static String ascii2String(int[] ASCIIs) {
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < ASCIIs.length; i++) {
            sb.append((char) ascii2Char(ASCIIs[i]));
        }
        return sb.toString();
    }

    public static String ascii2String(String ASCIIs) {
        String[] ASCIIss = ASCIIs.split(",");
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < ASCIIss.length; i++) {
            sb.append((char) ascii2Char(Integer.parseInt(ASCIIss[i])));
        }
        return sb.toString();
    }

    public static int[] string2ASCII(String s) {// 字符串转换为ASCII码
        if (s == null || "".equals(s)) {
            return null;
        }

        char[] chars = s.toCharArray();
        int[] asciiArray = new int[chars.length];

        for (int i = 0; i < chars.length; i++) {
            asciiArray[i] = char2ASCII(chars[i]);
        }
        return asciiArray;
    }

    public static String getIntArrayString(int[] intArray) {
        return getIntArrayString(intArray, ",");
    }

    public static String getIntArrayString(int[] intArray, String delimiter) {
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < intArray.length; i++) {
            sb.append(intArray[i]).append(delimiter);
        }
        return sb.toString();
    }

    public static String getASCII(int begin, int end) {
        StringBuffer sb = new StringBuffer();
        for (int i = begin; i < end; i++) {
            sb.append(i).append(":").append((char) i).append("/t");
            // sb.append((char) i).append("/t");
            if (i % 10 == 0) {
                sb.append("/n");
            }
        }
        return sb.toString();
    }

    public static String getCHASCII(int begin, int end) {
        return getASCII(19968, 40869);
    }

    public static void showASCII(int begin, int end) {
        for (int i = begin; i < end; i++) {
            // System.out.print(i + ":" + (char) i + "/t");
            System.out.print((char) i + "/t");
            if (i % 10 == 0) {
                System.out.println();
            }
        }
    }

    public static void showCHASCII() {
        showASCII(19968, 40869);
    }

    public static void showIntArray(int[] intArray) {
        showIntArray(intArray, ",");
    }

    public static void showIntArray(int[] intArray, String delimiter) {
        for (int i = 0; i < intArray.length; i++) {
            System.out.print(intArray[i] + delimiter);
        }
    }

/*    public static void createFile(String filePathAndName, String fileContent)
            throws IOException {

        String filePath = filePathAndName;
        filePath = filePath.toString();
        File myFilePath = new File(filePath);
        if (!myFilePath.exists()) {
            myFilePath.createNewFile();
        }
        FileWriter resultFile = new FileWriter(myFilePath);
        PrintWriter myFile = new PrintWriter(resultFile);
        String strContent = fileContent;
        myFile.println(strContent);
        myFile.close();
        resultFile.close();
    }*/

    public static String convertStringToHex(String str){

        char[] chars = str.toCharArray();

        StringBuffer hex = new StringBuffer();
        for(int i = 0; i < chars.length; i++){
            hex.append(Integer.toHexString((int)chars[i]));
        }

        return hex.toString();
    }

    public static String convertHexToString(String hex){

        StringBuilder sb = new StringBuilder();
        StringBuilder temp = new StringBuilder();

        //49204c6f7665204a617661 split into two characters 49, 20, 4c...
        for( int i=0; i<hex.length()-1; i+=2 ){

            //grab the hex in pairs
            String output = hex.substring(i, (i + 2));
            //convert hex to decimal
            int decimal = Integer.parseInt(output, 16);
            //convert the decimal to character
            sb.append((char)decimal);

            temp.append(decimal);
        }

        return sb.toString();
    }

    public static boolean containsNumOrLetter(String str) {
        String patt="[0-9|a-z|A-Z]";
        Pattern r = Pattern.compile(patt);
        Matcher matcher = r.matcher(str);
        return matcher.find();
    }
    public static void main(String[] args) {

        AsciiConvertUtil strToHex = new AsciiConvertUtil();
        System.out.println("\n-----ASCII码转换为16进制 -----");
        String str = ":";
        System.out.println("字符串: " + str);
        String hex = strToHex.convertStringToHex(str);
        System.out.println("转换为16进制 : " + hex);

        System.out.println("\n***** 16进制转换为ASCII *****");
        System.out.println("Hex : " + hex);
        System.out.println("ASCII : " + strToHex.convertHexToString("3A"));

        String s = "好好学习！天天向上！————笑的自然 2009年3月11日";
        System.out.println("\n*****  *****");
        showIntArray(string2ASCII(s), " ");
        System.out.println();
        System.out.println(ascii2String(string2ASCII(s)));
    }


}

转：

https://blog.csdn.net/xxd851116/article/details/3981006?utm_source=blogxgwz7

https://www.cnblogs.com/jack-jt-z/p/10873685.html