com.vanvalt.util.comm.StringUtils.java Source code

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Here is the source code for com.vanvalt.util.comm.StringUtils.java

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/**
 * Copyright &copy; 2012-2013 <a href="https://github.com/thinkgem/jeesite">JeeSite</a> All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 */
package com.vanvalt.util.comm;

import java.io.UnsupportedEncodingException;
import java.util.Locale;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.lang3.StringEscapeUtils;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import com.vanvalt.util.constant.Constant;

/**
 * , org.apache.commons.lang3.StringUtils
 * @author ThinkGem
 * @version 2013-05-22
 */
public class StringUtils extends org.apache.commons.lang3.StringUtils {

    public static String lowerFirst(String str) {
        if (StringUtils.isBlank(str)) {
            return "";
        } else {
            return str.substring(0, 1).toLowerCase() + str.substring(1);
        }
    }

    public static String upperFirst(String str) {
        if (StringUtils.isBlank(str)) {
            return "";
        } else {
            return str.substring(0, 1).toUpperCase() + str.substring(1);
        }
    }

    /**
     * ?HTML
     */
    public static String replaceHtml(String html) {
        if (isBlank(html)) {
            return "";
        }
        String regEx = "<.+?>";
        Pattern p = Pattern.compile(regEx);
        Matcher m = p.matcher(html);
        String s = m.replaceAll("");
        return s;
    }

    /**
     * ?
     * @param str 
     * @param length ?
     * @return
     */
    public static String abbr(String str, int length) {
        if (str == null) {
            return "";
        }
        try {
            StringBuilder sb = new StringBuilder();
            int currentLength = 0;
            for (char c : replaceHtml(StringEscapeUtils.unescapeHtml4(str)).toCharArray()) {
                currentLength += String.valueOf(c).getBytes("GBK").length;
                if (currentLength <= length - 3) {
                    sb.append(c);
                } else {
                    sb.append("...");
                    break;
                }
            }
            return sb.toString();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        return "";
    }

    /**
     * ?html
     * @param str 
     * @param length ?
     * @return
     */
    public static String rabbr(String str, int length) {
        return abbr(replaceHtml(str), length);
    }

    /**
     * ?Double
     */
    public static Double toDouble(Object val) {
        if (val == null) {
            return 0D;
        }
        try {
            return Double.valueOf(trim(val.toString()));
        } catch (Exception e) {
            return 0D;
        }
    }

    /**
     * ?Float
     */
    public static Float toFloat(Object val) {
        return toDouble(val).floatValue();
    }

    /**
     * ?Long
     */
    public static Long toLong(Object val) {
        return toDouble(val).longValue();
    }

    /**
     * ?Integer
     */
    public static Integer toInteger(Object val) {
        return toLong(val).intValue();
    }

    /**
     * i18n
     */
    /*public static String getMessage(String code, Object[] args) {
       LocaleResolver localLocaleResolver = SpringContextHolder.getBean(LocaleResolver.class);
       HttpServletRequest request = ((ServletRequestAttributes)RequestContextHolder.getRequestAttributes()).getRequest();  
       Locale localLocale = localLocaleResolver.resolveLocale(request);
       return SpringContextHolder.getApplicationContext().getMessage(code, args, localLocale);
    }*/

    /**
     * ?
     */
    public static String getRemoteAddr(HttpServletRequest request) {
        String remoteAddr = request.getHeader("X-Real-IP");
        if (isNotBlank(remoteAddr)) {
            remoteAddr = request.getHeader("X-Forwarded-For");
        } else if (isNotBlank(remoteAddr)) {
            remoteAddr = request.getHeader("Proxy-Client-IP");
        } else if (isNotBlank(remoteAddr)) {
            remoteAddr = request.getHeader("WL-Proxy-Client-IP");
        }
        return remoteAddr != null ? remoteAddr : request.getRemoteAddr();
    }

    /**
     * ?"20151107162719"  "2015-11-07 16:27:19"
     * @param str
     * @return
     */
    public static String formateStr2Date(String str) {

        String dateStr = "";

        if (str != null && str.length() >= 14) {

            if (!str.contains(Constant.STRING_LINE)) {
                dateStr = dateStr.concat(str.substring(0, 4)).concat(Constant.STRING_LINE)
                        .concat(str.substring(4, 6)).concat(Constant.STRING_LINE).concat(str.substring(6, 8))
                        .concat(Constant.STRING_SPACE).concat(str.substring(8, 10)).concat(Constant.STRING_COLON)
                        .concat(str.substring(10, 12)).concat(Constant.STRING_COLON).concat(str.substring(12, 14));
            } else {
                dateStr = str;
            }
        }

        return dateStr;
    }

    /**
     * ?"2015-11-07 16:27:19"  "20151107162719"
     * @param dateStr
     * @return
     */
    public static String formatDate2Str(String dateStr) {

        String str = "";
        if (dateStr != null && !"".equals(dateStr)) {

            str = dateStr.replace(Constant.STRING_LINE, Constant.STRING_BLANK)
                    .replace(Constant.STRING_SPACE, Constant.STRING_BLANK)
                    .replace(Constant.STRING_COLON, Constant.STRING_BLANK);
        }

        return str;
    }

}