Java tutorial
/* * Copyright 2006-2007 original author or authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.ultrapower.eoms.common.plugin.ecside.util; import java.io.UnsupportedEncodingException; import java.net.URLEncoder; import java.sql.Connection; import java.sql.ResultSet; import java.sql.Statement; import java.util.Calendar; import java.util.Iterator; import java.util.List; import java.util.Map; import org.apache.commons.codec.binary.Base64; import org.apache.commons.lang.StringUtils; import com.ultrapower.eoms.common.plugin.ecside.core.TableConstants; import com.ultrapower.eoms.common.plugin.ecside.core.TableModel; import com.ultrapower.eoms.common.plugin.ecside.core.bean.Tr; /** * @author Wei Zijun * */ public class ECSideUtils { public static String getApplicationName(String servletPath){ int first=servletPath.indexOf("/"); if (first<0) return ""; int second=servletPath.indexOf("/",first+1); if (second<0) return ""; return servletPath.substring(first+1, second); } // public static String encodeFileNameForMozilla(String fileName) // throws UnsupportedEncodingException { // // return "=?UTF-8?B?"+(new String(Base64.encodeBase64(fileName.getBytes("UTF-8"))))+"?="; // // } public static String encodeFileName(String fileName, String agent) throws UnsupportedEncodingException{ String codedfilename = null; fileName=fileName.replaceAll("\n|\r", " ").trim(); if (null != agent && -1 != agent.indexOf("MSIE")) { codedfilename = URLEncoder.encode(fileName, "UTF8"); // String prefix = fileName.lastIndexOf(".") != -1 ? fileName // .substring(0, fileName.lastIndexOf(".")) : fileName; // String extension = fileName.lastIndexOf(".") != -1 ? fileName // .substring(fileName.lastIndexOf(".")) : ""; // int limit = 150 - extension.length(); // if (codedfilename.length() > limit) { // codedfilename = java.net.URLEncoder.encode(prefix.substring(0, Math.min( // prefix.length(), limit / 9)), "UTF-8"); // codedfilename = codedfilename + extension; // } } else if (null != agent && -1 != agent.indexOf("Mozilla")) { codedfilename = "=?UTF-8?B?"+(new String(Base64.encodeBase64(fileName.getBytes("UTF-8"))))+"?="; } else { codedfilename = fileName; } return codedfilename; } public static String GBToISO(String gb) { try { return gb == null ? gb : new String(gb.getBytes("GB2312"), "ISO-8859-1"); } catch (Exception e) { return gb; } } public static String ISOToGB(String iso) { try { return iso == null ? iso : new String(iso.getBytes("ISO-8859-1"), "GB2312"); } catch (Exception e) { return iso; } } public static int parseInt(String val, int defaultValue) { int result = 0; try { result = Integer.parseInt(val); } catch (Exception e) { result = defaultValue; } return result; } public static int parseInt(String val) { int result = 0; try { result = Integer.parseInt(val); } catch (Exception e) { } return result; } public static long parseLong(String value, long defaultValue) { long result = 0; try { result = Long.parseLong(value); } catch (Exception ex) { result = defaultValue; } return result; } public static long parseLong(String value) { long result = 0; try { result = Long.parseLong(value); } catch (Exception ex) { } return result; } public static float parseFloat(String value) { float result = 0.0f; try { result = Float.parseFloat(value); } catch (Exception ex) { } return result; } public static double parseDouble(String value) { double result = 0.0; try { result = Double.parseDouble(value); } catch (Exception ex) { } return result; } public static String nullToBlank(String value) { return value == null ? "" : value; } public static Object nullToBlank(Object value) { return value == null ? "" : value; } public static String toNull(String value) { return (value == null || value.length() == 0) ? null : value; } public static String htmlConvert(String htmlStr) { if (htmlStr == null) return ""; htmlStr = htmlStr.replaceAll("&", "&"); htmlStr = htmlStr.replaceAll(" ", " "); htmlStr = htmlStr.replaceAll("\"", """); htmlStr = htmlStr.replaceAll("<", "<"); htmlStr = htmlStr.replaceAll(">", ">"); htmlStr = htmlStr.replaceAll("\r\n", "<br>"); return htmlStr; } public static String toDate(String value) { return "to_date( '" + trimToDay(value) + "','yyyy-mm-dd' )"; } public static String trimToDay(String value) { if (isEmpty(value)) return "9999-01-01"; int idx = value.indexOf(" "); return idx == -1 ? value : value.substring(0, idx); } public static String preventImmit(String tmpStr) { if (tmpStr == null) return ""; tmpStr = tmpStr.replaceAll("'", "''"); return tmpStr; } public static String getFormatNowDateTime(String formatStr) { Calendar nowtime = Calendar.getInstance(); java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat( formatStr); return sdf.format(nowtime.getTime()); } public static String getNowDate() { return getFormatNowDateTime("yyyy-MM-dd"); } public static String getNowTime() { return getFormatNowDateTime("HH:mm:ss"); } public static String getNowDateTime() { return getFormatNowDateTime("yyyy-MM-dd HH:mm:ss"); } public static boolean isEmpty(String str) { return str == null || str.equals(""); } public static Object nullToNew(Object obj, Object objNew) { return obj == null ? objNew : obj; } public static synchronized long getSEQSN(Connection conn, String SEQName) { long seqSN = 0; long startPoint = 1125983190000L; try { String query = "select " + SEQName + ".nextval from dual"; Statement stmt = conn.createStatement(); ResultSet rest = stmt.executeQuery(query); if (rest.next()) { seqSN = rest.getInt(1); } } catch (Exception e) { long t1 = System.currentTimeMillis(); while (t1 == System.currentTimeMillis()) { // Thread.sleep(1); } seqSN = System.currentTimeMillis() - startPoint; } return seqSN; } public static String GBToUTF(String ostr) { try { return ostr == null ? ostr : new String(ostr.getBytes("GB2312"), "UTF-8"); } catch (Exception e) { return ostr; } } public static String UTFToGB(String ostr) { try { return ostr == null ? ostr : new String(ostr.getBytes("UTF-8"), "GB2312"); } catch (Exception e) { return ostr; } } public static String toHEX(String ostr) { StringBuffer rst = new StringBuffer(); for (int i = 0; i < ostr.length(); i++) { rst.append(Integer.toHexString(ostr.charAt(i)).toUpperCase()); } return rst.toString(); } public static String prepareXml(String s) { if (s == null || s.length() == 0) return ""; StringBuffer stringbuffer = new StringBuffer(s.length() + 50); for (int i = 0; i < s.length(); i++) { char c = s.charAt(i); if ('>' == c) { stringbuffer.append(">"); continue; } else if ('<' == c) { stringbuffer.append("<"); continue; } else if ('&' == c) { stringbuffer.append("&"); continue; } else if (c == '"') { stringbuffer.append("""); continue; } else if ('\'' == c) { stringbuffer.append("'"); continue; } else stringbuffer.append(c); } return stringbuffer.toString(); } /** * ?? * * @param totalRow * * @param pageSize * ? * @param pageNo * * @return :{ ,,?} */ public static int[] pageInfo(int totalRow, int pageSize, int pageNo) { int offset = 1; if (pageSize <= 0) { return new int[] { 1, 0 + offset, totalRow }; } int totalPage = (int) Math.ceil((double) totalRow / pageSize); int startRow = pageSize * (pageNo - 1) + offset; int endRow = startRow + pageSize - 1; return new int[] { totalPage, startRow, endRow }; } public static int[] pageInfo(Object totalRow, Object pageSize, Object pageNo) { try { int tr = Integer.parseInt((String) totalRow); int ps = Integer.parseInt((String) pageSize); int pn = Integer.parseInt((String) pageNo); return pageInfo(tr, ps, pn); } catch (Exception e) { return pageInfo(-1, -1, -1); } } public static int[] rowNoDesc(int totalRows, int startNo, int endNo) { int startNoNew = totalRows - endNo + 1; int endNoNew = totalRows - startNo + 1; return new int[] { startNoNew, endNoNew }; } public static int[] pageInfoDesc(int totalRow, int pageSize, int pageNo) { int offset = 1; if (pageSize <= 0) { return new int[] { 1, 0 + offset, totalRow }; } int totalPage = (int) Math.ceil((double) totalRow / pageSize); int endRow = totalRow - pageSize * (pageNo - 1); int startRow = endRow - pageSize + offset; return new int[] { totalPage, startRow, endRow }; } /** * The value needs to be a String[]. A String, Null, or List will be * converted to a String[]. In addition it will attempt to do a String * conversion for other object types. * * @param value * The value to convert to an String[] * @return A String[] value. */ public static String[] getValueAsArray(Object value) { if (value == null) { return new String[] {}; // put in a placeholder } if (value instanceof String[]) { return (String[]) value; } else if (value instanceof List) { List valueList = (List) value; return (String[]) valueList.toArray(new String[valueList.size()]); } return new String[] { value.toString() }; } public static String replace(String inString, String oldPattern, String newPattern) { if (inString == null) { return null; } if (oldPattern == null || newPattern == null) { return inString; } StringBuffer sbuf = new StringBuffer(); // output StringBuffer we'll build up int pos = 0; // our position in the old string int index = inString.indexOf(oldPattern); // the index of an occurrence we've found, or -1 int patLen = oldPattern.length(); while (index >= 0) { sbuf.append(inString.substring(pos, index)); sbuf.append(newPattern); pos = index + patLen; index = inString.indexOf(oldPattern, pos); } sbuf.append(inString.substring(pos)); // remember to append any characters to the right of a match return sbuf.toString(); } public static String specialHTMLToShowTEXT(String html){ if (!StringUtils.isBlank(html)) { html = StringUtils.replace(html, " ", " "); html = StringUtils.replace(html, " ", " "); html = StringUtils.replace(html, "<", "<"); html = StringUtils.replace(html, ">", ">"); html = StringUtils.replace(html, """, "\""); html = StringUtils.replace(html, "&", "&"); } return html; } public static String HTMLToTEXT(String html) { html = html.replaceAll("<([^<>]+)>", ""); // html=html.replaceAll("<[^\"]*(=\"[^\"]*\")[^(<|>)]*>","").replaceAll("<[^(<|>)]*>",""); html = specialHTMLToShowTEXT(html); return html.replaceAll("<([^<>]+)>", ""); } public static String escRex(String in) { return in.replaceAll("\\{", "\\\\{").replaceAll("\\}", "\\\\}"); } public static String getAjaxBegin(String ectableId) { return TableConstants.AJAX_ZONE_PREFIX + TableConstants.AJAX_ZONE_BEGIN + ectableId + TableConstants.AJAX_ZONE_SUFFIX; } public static String getAjaxEnd(String ectableId) { return TableConstants.AJAX_ZONE_PREFIX + TableConstants.AJAX_ZONE_END + ectableId + TableConstants.AJAX_ZONE_SUFFIX; } public static String getTrHTML(List trList,TableModel model){ String extendTr=null; if (trList!=null&& trList.size()>0){ StringBuffer eb=new StringBuffer(); for (int i=0;i<trList.size();i++){ Tr trBean=(Tr)trList.get(i); eb.append(Tr.buildTr(trBean, model)); } extendTr=eb.toString(); } return extendTr; } public static boolean isSearchMatchCaseIgnore(String value, String search) { value = value.toLowerCase().trim(); search = search.toLowerCase().trim(); return isSearchMatch(value,search); } // includeOnceParameters public static boolean isSearchMatch(String value, String search) { if (search.startsWith("*") && search.endsWith("*") && StringUtils.contains(value, search.substring(1,search.length()-1))) { return true; }else if (search.startsWith("*") && value.endsWith(StringUtils.replace(search, "*", ""))) { return true; } else if (search.endsWith("*") && value.startsWith(StringUtils.replace(search, "*", ""))) { return true; }else if (value.equals(search)){ return true; } return false; } public static String convertString(Object obj,String nullTo){ return obj==null?nullTo:obj.toString(); } public static String getDefaultSortSQL(Map map){ StringBuffer rs=new StringBuffer(); if (map!=null && !map.isEmpty()){ for (Iterator itor=map.keySet().iterator();itor.hasNext();){ Object field=itor.next(); String ord=(String)map.get(field); rs.append(" ORDER BY ").append(field).append(" ").append(ord); break; } } return rs.toString(); } }