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简单封装公共工具，二维码工具，驼峰转换工具，des加解密工具，http访问工具，字符串工具，日期工具

There is a newer version: 2.0.4

package win.hupubao.common.utils;

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

import static java.util.regex.Pattern.compile;

/**
 * @author feihong
 * @date 2017-08-10
 */
public class StringUtils {

    public static boolean isBlank(Object obj) {
        return obj == null || org.apache.commons.lang3.StringUtils.isBlank(obj.toString())
                || obj.toString().equalsIgnoreCase("null");
    }

    public static boolean isNotBlank(Object obj){
         return !isBlank(obj);
    }

    public static Integer parseInteger(String str) {
        String regEx="[^0-9]";
        Pattern p = Pattern.compile(regEx);
        Matcher m = p.matcher(str);
        return Integer.valueOf(m.replaceAll("").trim());
    }

    /**
     * 首字母转大写
     * @param name
     * @return
     */
    public static String firstToUpperCase(String name) {
        return StringUtils.isBlank(name) ? "" : name.substring(0, 1).toUpperCase() + name.substring(1);
    }

    /**
     * 首字母转小写
     * @param name
     * @return
     */
    public static String firstToLowerCase(String name) {
        return StringUtils.isBlank(name) ? "" : name.substring(0, 1).toLowerCase() + name.substring(1);
    }
    public static void main(String[] args) {
        String str = "int(12)";
        System.out.println(parseInteger(str));
    }

    public static String join(Object[] strAry, String join){
        StringBuffer sb=new StringBuffer();
        for(int i=0;i