com.qdum.llhb.common.utils.StringUtils.java Source code

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Here is the source code for com.qdum.llhb.common.utils.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.qdum.llhb.common.utils;

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

import javax.servlet.http.HttpServletRequest;

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

    /**
     * ?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 : 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 "";
    }

    /**
     * ?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();
    }

    /**
     * ?
     */
    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();
    }

    /**
     * ?
     * @param str
     * @return
      */
    public static String replaceBlank(String str) {
        String dest = "";
        if (str != null) {
            Pattern p = Pattern.compile("\\s*|\t|\r|\n");
            Matcher m = p.matcher(str);
            dest = m.replaceAll(" ");
        }
        return dest;
    }

}