Java字符串操作工具类

CommUtils 

/**
 * Copyright 2017-2025 Evergrande Group.
 */
package com.gy.util;

import net.sf.json.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.UUID;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * 公共工具
 */
public class CommUtils {
    public static final Logger logger = LoggerFactory.getLogger(CommUtils.class);

    private CommUtils() {
    }

    /**
     * 生成随机uuid
     *
     * @return
     */
    public static String generateUuid() {
        String uuid = UUID.randomUUID().toString();
        return uuid.replaceAll("-", "");
    }


    /**
     * 通过图片base64流判断图片等于多少字节 image 图片流
     *
     * @param image
     * @return
     */
    public static Integer imageSize(String image) {
        if (image.length() <= 22) {
            return 0;
        }
        String str = image.substring(22);
        Integer equalIndex = str.indexOf('=');
        if (str.indexOf('=') > -1) {
            str = str.substring(0, equalIndex);
        }
        Integer strLength = str.length();
        return strLength - (strLength / 8) * 2;
    }

    /**
     * 去掉最后一个分隔符： “,”  "-"  "/"  "——"  “_”   等等
     * Remove the last separator
     *
     * @param inputContent
     * @return String
     * @Methods Name repalceLastSplit
     */
    public static String removeLastSeparator(String inputContent) {
        StringBuilder build = new StringBuilder(200);
        String[] contentSplit = null;
        String[] separator = {"-", ",", "/"};
        if (inputContent.contains(separator[0])) {
            contentSplit = inputContent.split(separator[0]);
            for (int i = 0; i < contentSplit.length; i++) {
                if (i < (contentSplit.length - 1)) {
                    build.append(contentSplit[i]).append(separator[0]);
                } else {
                    build.append(contentSplit[i]);
                }
            }
        } return build.toString();
    }


    /**
     * json  转XML
     *
     * @param json
     * @return
     */
    public static String getJson2Xml(JSONObject json) {
        Iterator<String> it = json.keys();
        StringBuilder sb = new StringBuilder();
        String key = "";
        String value = "";
        sb.append("<xml>");
        while (it.hasNext()) {
            key = it.next();
            value = json.optString(key);
            if (!"null".equalsIgnoreCase(value)) {
                try {
                    JSONObject jsonSon = JSONObject.fromObject(value);
                    sb.append("<").append(key).append(">");
                    sb.append(getJson2Xml(jsonSon));
                    sb.append(sb.append("</").append(key).append(">"));
                } catch (Exception e) {
                    sb.append("<").append(key).append(">").append(value).append("</").append(key).append(">");
                }
            }
        }
        sb.append("</xml>");
        return sb.toString();
    }

    /**
     * XML转MAP
     *
     * @param xmlString
     * @return
     */
    public static Map<String, Object> transferXMLtoMap(String xmlString) {
        Map<String, Object> newMap = new HashMap<String, Object>();
        xmlString = xmlString.replaceAll("<\!\[CDATA\[", "");
        xmlString = xmlString.replaceAll("\]\]>", "");
        xmlString = xmlString.replaceAll("</xml>", "");
        xmlString = xmlString.replaceAll("<xml>", "");
        Pattern p = Pattern.compile("<([^</]+)>([^</]*)</([^</]+)>");
        Matcher m = p.matcher(xmlString);
        while (m.find()) {
            newMap.put(m.group(1), m.group(2));
        }
        return newMap;
    }
}