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- package com.api.common;
- import org.slf4j.Logger;
- import org.slf4j.LoggerFactory;
- import javax.servlet.http.HttpServletRequest;
- import java.text.DateFormat;
- import java.text.ParseException;
- import java.text.SimpleDateFormat;
- import java.util.Calendar;
- import java.util.Date;
- import java.util.List;
- /**
- * Created by wanghuiwen on 17-2-23.
- */
- public class UtilFun {
- static Logger logger = LoggerFactory.getLogger("util");
- public static final String YYYYMMDDHHMMSS="yyyy-MM-dd HH:mm:ss";
- public static final String YYYYMMDDHHMMSS3="yyyyMMddHHmmss";
- public static final String YYYYMMDD2="yyyy/MM/dd";
- public static final String YMD="yyyy-MM-dd";
- public static final String HHMMSS = "HH:mm:ss";
- /**
- * 判断list不为
- *
- * @param list list
- * @return 为空返回true
- */
- public static boolean isEmptyList(List list) {
- return list == null || list.size() <= 0;
- }
- /**
- * 判断str不为
- *
- * @param str str
- * @return 为空返回true
- */
- public static boolean isEmptyString(String str) {
- return str == null || str.equals("");
- }
- public static String getIpAddr(HttpServletRequest request) {
- String ip = request.getHeader("x-forwarded-for");
- if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
- ip = request.getHeader("Proxy-Client-IP");
- }
- if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
- ip = request.getHeader("WL-Proxy-Client-IP");
- }
- if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
- ip = request.getRemoteAddr();
- }
- return ip;
- }
- public static String getIP(HttpServletRequest request) {
- String ip = request.getHeader("x-forwarded-for");
- if (!checkIP(ip)) {
- ip = request.getHeader("Proxy-Client-IP");
- }
- if (!checkIP(ip)) {
- ip = request.getHeader("WL-Proxy-Client-IP");
- }
- if (!checkIP(ip)) {
- ip = request.getRemoteAddr();
- }
- return ip;
- }
- private static boolean checkIP(String ip) {
- return ip != null && ip.length() != 0 && !"unkown".equalsIgnoreCase(ip)
- && ip.split(".").length == 4;
- }
- public static String DateToString(Date date,String fromat){
- SimpleDateFormat sdf = new SimpleDateFormat(fromat);
- return sdf.format(date);
- }
- public static Date StringToDate(String datestr,String formatstr){
- DateFormat format= new SimpleDateFormat(formatstr);
- try {
- Date date =format.parse(datestr);
- return date;
- } catch (ParseException e) {
- logger.error("日期转换错误",e);
- return null;
- }
- }
- public static Date addDay(String date,int day){
- return addDay(StringToDate(date,YYYYMMDDHHMMSS),day);
- }
- public static Date addDay(String date,int day,String fromat){
- return addDay(StringToDate(date,fromat),day);
- }
- public static Date addDay(Date date,int day){
- Calendar calendar = Calendar.getInstance();
- calendar.setTime(date);
- calendar.add(Calendar.DATE,day);
- return calendar.getTime();
- }
- /**
- * 首字母大
- * @param str start
- * @return str
- */
- public static String upperFristCase(String str) {
- char[] ch = str.toCharArray();
- if (ch[0] >= 'a' && ch[0] <= 'z') {
- ch[0] = (char) (ch[0] - 32);
- }
- return new String(ch);
- }
- /**
- * 返回时间戳
- */
- public static Integer getIntTime(Date date){
- return Math.toIntExact(date.getTime() / 1000);
- }
- /**
- * 隨機時間
- * @param begin
- * @param end
- * @return
- */
- public static String random(int begin,int end){
- int r = (int) (begin + (Math.random() * (end - begin)));
- if(r>10) {
- return "0"+r+":00:00";
- }else {
- return r +":00:00";
- }
- }
- }
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