基于Java开发的学校图书馆座位预约管理系统源码

package com.ftwj.utils.result; import org.apache.commons.lang3.StringUtils; import javax.servlet.http.HttpServletRequest; import java.io.UnsupportedEncodingException; import java.util.ArrayList; import java.util.List; import java.util.Map; import java.util.Random; import java.util.regex.Matcher; import java.util.regex.Pattern; /** * 字符串校验工具类 * * @author yoyx@foxmail.com * @date 2017年12月4日上午11:20:09 */ public class StringTools { public static final String ALL_CHAR = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"; public static final String NUM_CHAR = "0123456789"; public static final Pattern p = Pattern.compile("<img[^>]*?src[\\s]*=[\\s]*(['|\"]{0,1})(.*?)\\1[^>]*?>", Pattern.CASE_INSENSITIVE); private static Random random = new Random(); /** * 空字符串检测 * * @param args * @return 是空串返回true * @author yoyx@foxmail.com * @version 创建时间：2017年12月4日上午11:20:09 */ public static boolean isNullStr(String... args) { boolean falg = false; for (String arg : args) { if (StringUtils.isEmpty(arg) || arg.equals("null") || arg == null || "".equals(arg)) { falg = true; return falg; } } return falg; } /** * 判断是不是有不为空的字符串 只要有一个字符串不为空就返回true * * @param args * @return * @author yoyx@foxmail.com * @version 创建时间：2017年12月4日上午11:20:09 */ public static boolean isNotAllNullStr(String... args) { boolean falg = true; for (String arg : args) { if (!StringUtils.isEmpty(arg)) { falg = false; return falg; } } return falg; } /** * @author: jaymou@qq.com * @Description: 返回一个定长的随机字符串(只包含大小写字母 、 数字) */ public static String generateString(int length) { StringBuffer sb = new StringBuffer(); for (int i = 0; i < length; i++) { sb.append(ALL_CHAR.charAt(random.nextInt(ALL_CHAR.length()))); } return sb.toString(); } public static String generateNumString(int length) { StringBuffer sb = new StringBuffer(); for (int i = 0; i < length; i++) { sb.append(ALL_CHAR.charAt(random.nextInt(NUM_CHAR.length()))); } return sb.toString(); } /** * @author: jaymou@qq.com * @Description: 将Object转换为String */ @SuppressWarnings("unused") public static String objectToString(Object object) { if (object != null) { return object + ""; } else { return ""; } } /** * @Description: 获取JSONObject对象 * @author jaymou@qq.com */ public static String getJsonObjectString(com.alibaba.fastjson.JSONObject jsonObject, String key) { if (jsonObject.containsKey(key)) { String string = jsonObject.getString(key); string = "null".equals(string) ? null : string; return string; } return ""; } /** * @Description: TODO：(拼接in字符串) * @author: jaymou@qq.com */ public static String getInWord(String orignStr) { String[] projectArr = orignStr.split(","); StringBuilder sb = new StringBuilder(); for (int i = 0; i < projectArr.length; i++) { sb.append("'" + projectArr[i] + "'");//拼接单引号,到数据库后台用in查询. if (i != projectArr.length - 1) {//前面的元素后面全拼上",",最后一个元素后不拼 sb.append(","); } } return sb.toString(); } public static String getListInWord(List<Map<String, Object>> list) { StringBuilder sb = new StringBuilder(); for (int i = 0; i < list.size(); i++) { sb.append("'" + list.get(i).get("id") + "'");//拼接单引号,到数据库后台用in查询. if (i != list.size() - 1) {//前面的元素后面全拼上",",最后一个元素后不拼 sb.append(","); } } return sb.toString(); } /** * 获取文件前缀 * * @param fileName * @return */ public static String getFilePrefix(String fileName) { if (fileName == null || "".equals(fileName)) { return null; } return fileName.substring(0, fileName.lastIndexOf(".")); } /** * 获取文件后缀 * * @param fileName * @return */ public static String getFileSufix(String fileName) { int pointIndex = fileName.lastIndexOf("."); if (fileName == null || "".equals(fileName) || pointIndex < 0) { return null; } return fileName.substring(pointIndex);//从最后一个点之后截取字符串 } /** * @description: 获取项目路径 * @author: JayMou * @time: 2019/7/18 10:26 */ public static String getWebAppPath(HttpServletRequest request) { String path = ""; String protol = request.getScheme();//获取协议，http String serverName = request.getServerName();//获取服务器名，localhost int serverPort = request.getServerPort();//获取服务器端口，8080 String contextPath = request.getContextPath();//获取项目名，/DemoName path = new StringBuffer(protol).append("://").append(serverName).append(":").append(serverPort).append(contextPath).toString(); return path; } /** * 获取用户真实IP地址，不使用request.getRemoteAddr();的原因是有可能用户使用了代理软件方式避免真实IP地址, * <p> * 可是，如果通过了多级反向代理的话，X-Forwarded-For的值并不止一个，而是一串IP值，究竟哪个才是真正的用户端的真实IP呢？ * 答案是取X-Forwarded-For中第一个非unknown的有效IP字符串。 * <p> * 如：X-Forwarded-For：192.168.1.110, 192.168.1.120, 192.168.1.130, * 192.168.1.100 * <p> * 用户真实IP为： 192.168.1.110 * * @param request * @return */ public static String getIpAddress(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.getHeader("HTTP_CLIENT_IP"); } if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getHeader("HTTP_X_FORWARDED_FOR"); } if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getRemoteAddr(); } return ip; } public static String filterNull(String str) { str = "" + str; if ("null".equals(str.trim())) { str = ""; } return str; } /** * 处理父子级管理列表数据 * * @return */ public static List<Map<String, Object>> sortFcList(List<Map<String, Object>> list) { List<Map<String, Object>> faterList = new ArrayList<Map<String, Object>>(); if (list != null && !list.isEmpty()) { for (Map<String, Object> map : list) { String fid = filterNull("" + map.get("fid")); if ("0".equals(fid)) { faterList.add(map); } } for (Map<String, Object> fatherMap : faterList) { Str