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学JSP时,写了一些工具函数因为不太会用JAVA下的正则表达式也只能这么写啦!发出来让大家批评批评提点意见!有几个函数不算是自己写的希望爱挑剌的朋友嘴下留情!我是新手我怕谁,脸皮不行的人水平也上不去呀.嘻嘻.. package mxzc.web.strctrl; public class StringCtrl {/******************************************** public synchronized String HTMLcode(String TXTcode) 功能:文本替换 public synchronized String Unhtmlcode(String str) 功能:(不完全)反文本替换 public synchronized String Unhtmlcodea(String str) 功能:反文本替换 public synchronized boolean emailcheck (String email) 功能:检查一个字符串是否符合E-Mail public synchronized boolean isemailstr(String email) 功能:检查一个字符串是否符合E-Mail public synchronized boolean isqqstr(String qq) 功能:检查一个字符串是否符合QQ public synchronized boolean isnumstr(String num) 功能:检查一个字符串是否为一数字串 public synchronized String userstrlow(String user) 功能:替换用户名中不合法的部分 public synchronized boolean userstrchk(String user) 功能:检查字符串是否符合用户名法则 public synchronized boolean istelstr(String tel) 功能:检查字符串是否为TEL public synchronized boolean urlcheck(String url) 功能:检查字符串是否为URL public synchronized String isotogbk(String iso) 功能:ISO9006-1码转变为GBK public synchronized String gbktoiso(String gbk) 功能:GBK码转变为ISO9006-1 public synchronized String dostrcut(String oldstr,int length) 功能:按汉字长换行(英文按半个字长) public synchronized String inttodateshow(int datenum) 功能:将1900年至时间的秒数换为日期字符串 public synchronized String nowdateshow() 功能:显示当前日期 public synchronized java.util.Date inttodate(int datenum) 功能:将秒数转变为日期 public synchronized int datetoint() 功能:将时间换为从1900年至今的秒数 public synchronized int datetoint(java.util.Date d) 功能:将时间换为从1900年至时间的秒数 public synchronized String overlengthcut(String str,int length) 功能:截取前几个字符,单位为汉字字长 public synchronized String replace(String str,String suba,String subb) 功能:字符串替换 *********************************************/ private static final String isostr="ISO8859-1"; private static final String gbkstr="GBK"; public StringCtrl() { } public synchronized boolean emailcheck (String email) { if(email==null)return false; if(email.length()<6)return false; if(email.indexOf("@")<2)return false; if(email.indexOf(".")<4)return false; if(email.endsWith(".")||email.endsWith("@"))return false; if(email.lastIndexOf("@")>email.lastIndexOf(".")-1)return false; if(email.lastIndexOf("@")!=email.indexOf("@"))return false; String[] lowstr={"\\\'",""","n","&","t","r","<",">","/","\\","#"}; for(int i=0;i<lowstr.length;i++)if(email.indexOf("lowstr")>0)return false; return true; } public synchronized boolean isemailstr(String email) { if(email==null)return false; if(email.indexOf("@")==-1||email.indexOf(".")==-1||email.length()<6)return false; return true; } public synchronized boolean isqqstr(String qq) { if(qq==null)return false; if(qq.length()>12)return false; if(qq.length()<5)return false; for(int i=0;i<qq.length();i++) if(!(((int)qq.charAt(i))<=57&&((int)qq.charAt(i))>=48))return false; return true; } public synchronized boolean isnumstr(String num) { if(num==null)return false; if(num.length()<1)return false; for(int i=0;i<num.length();i++) if(!(((int)num.charAt(i))<=57&&((int)num.charAt(i))>=48))return false; return true; } public synchronized String userstrlow(String user) { String newuserstr=user.trim(); char[] lowstr={\\\'\\\'\\\',\\\'"\\\',\\\'n\\\',\\\'&\\\',\\\'t\\\',\\\'r\\\',\\\'<\\\',\\\'>\\\',\\\'/\\\',\\\'\\\\\',\\\'#\\\'}; for(int i=0;i<lowstr.length;i++) newuserstr=newuserstr.replace(lowstr[i],\\\'+\\\'); return newuserstr; } public synchronized boolean userstrchk(String user) { String newuserstr=user.trim(); char[] lowstr={\\\'\\\'\\\',\\\'"\\\',\\\'n\\\',\\\'&\\\',\\\'t\\\',\\\'r\\\',\\\'<\\\',\\\'>\\\',\\\'/\\\',\\\'\\\\\',\\\'#\\\',\\\'~\\\',\\\'`\\\',\\\'!\\\',\\\'@\\\',\\\'$\\\',\\\'%\\\',\\\'^\\\',\\\'*\\\',\\\'(\\\',\\\')\\\',\\\'-\\\',\\\'_\\\',\\\'+\\\',\\\'=\\\',\\\'|\\\',\\\'?\\\',\\\',\\\',\\\';\\\',\\\'.\\\'}; for(int i=0;i<lowstr.length;i++) newuserstr=newuserstr.replace(lowstr[i],\\\'+\\\'); return (user.equals(newuserstr))?true:false; } public synchronized boolean istelstr(String tel) { if(tel==null)return false; if(tel.length()<1)return false; if(tel.length()>32)return false; for(int i=0;i<tel.length();i++) if(!(((int)tel.charAt(i))<=57&&((int)tel.charAt(i))>=48))if(tel.charAt(i)!=\\\'-\\\')return false; return true; } public synchronized boolean urlcheck(String url) { if(url==null)return false; if(url.length()<10)return false; String urls=url.toLowerCase(); if(!urls.startsWith("http://"))return false; if(url.indexOf("<")>0||url.indexOf(">")>0)return false; return true; } public synchronized String isotogbk(String iso)throws Exception { if(iso!=null)return (new String(iso.getBytes(isostr),gbkstr)); if(iso.length()<1)return ""; return null; } public synchronized String gbktoiso(String gbk)throws Exception { if(gbk!=null)return (new String(gbk.getBytes(gbkstr),isostr)); if(gbk.length()<1)return ""; return null; } public synchronized String HTMLcode(String TXTcode) { String newstr=""; if(TXTcode==null)return ""; newstr=TXTcode; newstr=replace(newstr,"&","&"); newstr=replace(newstr,""","""); newstr=replace(newstr," "," "); newstr=replace(newstr,"<","<"); newstr=replace(newstr,">",">"); newstr=replace(newstr,"\\\'","'"); return newstr; } public synchronized String Unhtmlcode(String str) { String newstr=""; if(str==null)return ""; if(str.length()<1)return ""; newstr=str; newstr=replace(newstr,"&","&"); //newstr=replace(newstr,""","""); newstr=replace(newstr," "," "); newstr=replace(newstr,""","""); //newstr=replace(newstr,"<","<"); //newstr=replace(newstr,">",">"); newstr=replace(newstr,"'","\\\'"); return newstr; } public synchronized String Unhtmlcodea(String str) { String newstr=""; if(str==null)return ""; if(str.length()<1)return ""; newstr=str; newstr=replace(newstr,"&","&"); newstr=replace(newstr,""","""); newstr=replace(newstr," "," "); newstr=replace(newstr,"<","<"); newstr=replace(newstr,">",">"); newstr=replace(newstr,"'","\\\'"); return newstr; } public synchronized String dostrcut(String oldstr,int length) { int i=0; int j=0; int k=0; String newstr=""; if(oldstr==null)return ""; if(length<=0)return ""; for(i=0;i<oldstr.length();i++) { if(oldstr.charAt(i)==\\\'n\\\')j=0; else if(((int)(oldstr.charAt(i)))>255)j+=2; else j++; if((j/2)>=length) { newstr=newstr.concat(oldstr.substring(k,i)+"n"); k=i; j=0; } } newstr=newstr.concat(oldstr.substring(k)+"n"); return newstr; } public synchronized String inttodateshow(int datenum) { int year=0; int month=0; int day=0; int hour=0; int minute=0; int second=0; String datestr=""; java.util.Date d; d=new java.util.Date((long)(datenum)*1000); java.util.Calendar ds=java.util.Calendar.getInstance(); ds.setTime(d); year=ds.get(java.util.Calendar.YEAR); month=ds.get(java.util.Calendar.MONTH); day=ds.get(java.util.Calendar.DATE); hour=ds.get(java.util.Calendar.HOUR_OF_DAY); minute=ds.get(java.util.Calendar.MINUTE); second=ds.get(java.util.Calendar.SECOND); datestr=Integer.toString(year)+"/"+Integer.toString(1+month)+"/"+Integer.toString(day); return datestr; } public synchronized String nowdateshow() { int year=0; int month=0; int day=0; int hour=0; int minute=0; int second=0; String datestr=""; java.util.Calendar ds=java.util.Calendar.getInstance(); year=ds.get(java.util.Calendar.YEAR); month=ds.get(java.util.Calendar.MONTH); day=ds.get(java.util.Calendar.DATE); hour=ds.get(java.util.Calendar.HOUR_OF_DAY); minute=ds.get(java.util.Calendar.MINUTE); second=ds.get(java.util.Calendar.SECOND); datestr=Integer.toString(year)+"/"+Integer.toString(1+month)+"/"+Integer.toString(day); return datestr; } public synchronized java.util.Date inttodate(int datenum) { int year=0; int month=0; int day=0; String datestr=""; java.util.Date d; d=new java.util.Date((long)(datenum)*1000); return d; } public synchronized int datetoint() { java.util.Date d=null; long ds=0; d=new java.util.Date(); ds=d.getTime(); return (int)(ds/1000); } public synchronized int datetoint(java.util.Date d) { long ds=0; ds=d.getTime(); return (int)(ds/1000); } public synchronized String overlengthcut(String str,int length) { int i=0; int j=0; if(str==null)return ""; if(length<0)return ""; if(str.length()<=length)return str; for(i=0;i<str.length();i++) { if(((int)(str.charAt(i)))>255)j+=2; else j++; if((j/2)>=length) { return str.substring(0,i); } } return str; } public synchronized String replace(String str,String suba,String subb) { String newstr=""; int start=0; int offset=0; int subalength=0; int strlength=0; if(str==null||suba==null||subb==null)return str; if(suba.equals(subb))return str; if(str.length()<suba.length()||str.length()<subb.length())return str; if(str.length()>0&&suba.length()>0&&subb.length()>0) { subalength=suba.length(); strlength=str.length(); while(true) { if(str.indexOf(suba)<0)break; if(offset>strlength)break; start=str.indexOf(suba,offset); if(start<offset)break; newstr=newstr.concat(str.substring(offset,start)); newstr=newstr.concat(subb); offset=start+subalength; } newstr=newstr.concat(str.substring(offset)); return newstr; } else { return str; } } } 返回类别: 教程 上一教程: JSP发送邮件实例 下一教程: MVC-OBSERVER模式 您可以阅读与"以前编写JSP网站时写的一些工具函数"相关的教程: · java 面试中的一道编写一个截取字符串的函数！！！！ · Java编写中轻易搞错的一些东西 · 关于Java的一些 工具,类库,框架...... · 困扰JSP的一些问题与解决方式 · jsp开发网站使用cookie的一点经验 |
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