package com.partynetwork.iparty.app.util;
import java.io.InputStream;
import java.net.URL;
import java.text.DecimalFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.regex.Pattern;
/**
* 字符串操作工具包
*
* @version 1.0
*/
public class StringUtils {
private final static Pattern emailer = Pattern
.compile("\\w+([-+.]\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*");
// private final static SimpleDateFormat dateFormater = new
// SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
// private final static SimpleDateFormat dateFormater2 = new
// SimpleDateFormat("yyyy-MM-dd");
private final static ThreadLocal<SimpleDateFormat> dateFormater = new ThreadLocal<SimpleDateFormat>() {
@Override
protected SimpleDateFormat initialValue() {
return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
}
};
private final static ThreadLocal<SimpleDateFormat> dateFormater2 = new ThreadLocal<SimpleDateFormat>() {
@Override
protected SimpleDateFormat initialValue() {
return new SimpleDateFormat("yyyy-MM-dd");
}
};
/**
* 将字符串转位日期类型
*
* @param sdate
* @return
*/
public static Date toDate(String sdate) {
try {
return dateFormater.get().parse(sdate);
} catch (ParseException e) {
return null;
}
}
/**
* 以友好的方式显示时间
*
* @param sdate
* @return
*/
public static String friendly_time(String sdate) {
Date time = toDate(sdate);
if (time == null) {
return "Unknown";
}
String ftime = "";
Calendar cal = Calendar.getInstance();
// 判断是否是同一天
String curDate = dateFormater2.get().format(cal.getTime());
String paramDate = dateFormater2.get().format(time);
if (curDate.equals(paramDate)) {
int hour = (int) ((cal.getTimeInMillis() - time.getTime()) / 3600000);
if (hour == 0)
ftime = Math.max(
(cal.getTimeInMillis() - time.getTime()) / 60000, 1)
+ "分钟前";
else
ftime = hour + "小时前";
return ftime;
}
long lt = time.getTime() / 86400000;
long ct = cal.getTimeInMillis() / 86400000;
int days = (int) (ct - lt);
if (days == 0) {
int hour = (int) ((cal.getTimeInMillis() - time.getTime()) / 3600000);
if (hour == 0)
ftime = Math.max(
(cal.getTimeInMillis() - time.getTime()) / 60000, 1)
+ "分钟前";
else
ftime = hour + "小时前";
} else if (days == 1) {
ftime = "昨天";
} else if (days == 2) {
ftime = "前天";
} else if (days > 2 && days <= 10) {
ftime = days + "天前";
} else if (days > 10) {
ftime = dateFormater2.get().format(time);
}
return ftime;
}
/**
* 判断给定字符串时间是否为今日
*
* @param sdate
* @return boolean
*/
public static boolean isToday(String sdate) {
boolean b = false;
Date time = toDate(sdate);
Date today = new Date();
if (time != null) {
String nowDate = dateFormater2.get().format(today);
String timeDate = dateFormater2.get().format(time);
if (nowDate.equals(timeDate)) {
b = true;
}
}
return b;
}
/**
* 判断给定字符串是否空白串。 空白串是指由空格、制表符、回车符、换行符组成的字符串 若输入字符串为null或空字符串,返回true
*
* @param input
* @return boolean
*/
public static boolean isEmpty(String input) {
if (input == null || "".equals(input))
return true;
for (int i = 0; i < input.length(); i++) {
char c = input.charAt(i);
if (c != ' ' && c != '\t' && c != '\r' && c != '\n') {
return false;
}
}
return true;
}
/**
* 判断是不是一个合法的电子邮件地址
*
* @param email
* @return
*/
public static boolean isEmail(String email) {
if (email == null || email.trim().length() == 0)
return false;
return emailer.matcher(email).matches();
}
/**
* 判断是不是一个有效的身份证
*
* @param idCard
* @return
*/
public static boolean isIdCard(String idCard) {
return new IDCard().verify(idCard);
}
/**
* 字符串转整数
*
* @param str
* @param defValue
* @return
*/
public static int toInt(String str, int defValue) {
try {
return Integer.parseInt(str);
} catch (Exception e) {
}
return defValue;
}
/**
* 对象转整数
*
* @param obj
* @return 转换异常返回 0
*/
public static int toInt(Object obj) {
if (obj == null)
return 0;
return toInt(obj.toString(), 0);
}
/**
* 对象转整数
*
* @param obj
* @return 转换异常返回 0
*/
public static long toLong(String obj) {
try {
return Long.parseLong(obj);
} catch (Exception e) {
}
return 0;
}
/**
* 字符串转布尔值
*
* @param b
* @return 转换异常返回 false
*/
public static boolean toBool(String b) {
try {
return Boolean.parseBoolean(b);
} catch (Exception e) {
}
return false;
}
/**
* 字符串转float类型
*
* @param f
* @return 转换异常返回0f
*/
public static float toFloat(String f) {
try {
return Float.parseFloat(f);
} catch (Exception e) {
}
return 0f;
}
/**
* 转换成两位小数
* @param str
* @return
*/
public static String toMoney(String str) {
return new DecimalFormat("0.00").format(Float.parseFloat(str));
}
/**
* 判断url连接是否有效
*
* @param url
* @return
*/
public static boolean checkURL(String url) {
URL urls = null;
try {
urls = new URL(url);
InputStream in = urls.openStream();
in.close();
in = null;
return true;
} catch (Exception e1) {
return false;
}
}
}