global.jsp

这也是一个java版的留言版

<%@ page import="java.util.*,java.sql.*,java.text.*, java.io.*,javax.servlet.http.*,javax.servlet.jsp.JspWriter" %>
<%@ include file="./mySession.jsp" %>
<%!
    /**
     * 生成导航条文字
     */
    public String getNaviString(String[][] navi){
        StringBuffer sb=new StringBuffer("【");
        for(int i=0;i<(navi.length);i++){
            if(i!=ni)sb.append("<a class=w href='"+siteURL+navi[i][1]+"'>"+navi[i][0]+"</a>|");
            else	 sb.append(navi[i][0]+"|");
        }
        sb.deleteCharAt(sb.length()-1);
        sb.append("】");
        return sb.toString();
    }
    //替换SQL语句的危险字符串
    public String prepareSql(String str) {
    if(str != null){
      str = replaceString(str,"'","'||chr(39)||'").trim();
      str = replaceString(str,"&","'||'&'||'").trim();
    }
    else{
      str="";
    }
    return str;
    }
    /**
     * 替换字符
     * @param strIn
     * @return
     */
    public String replaceContent(String strIn) {
        String strOut=null;
        strOut=replaceString(strIn,"\n\t","<br>");
        strOut=replaceString(strOut,"\n","<br>");
        strOut=replaceString(strOut," ","&nbsp;");
        return strOut;
    }
    /**
     * 替换字符
     * @param Str
     * @param OldStr
     * @param NewStr
     * @return
     */
    public String replaceString(String Str, String OldStr, String NewStr) {
        int pos1 = 0, pos2 = 0;
        String retu = "";
        if(Str != null && Str.length() > 0 ) {
          pos2 = Str.indexOf(OldStr, pos1);
          while(pos2 != -1) {
            retu = retu + Str.substring(pos1, pos2) + NewStr;
            pos1 = pos2 + OldStr.length();
            pos2 = Str.indexOf(OldStr, pos1);
          }
          retu = retu + Str.substring (pos1);
        }
        return retu;
    }
    /**
     *  *	替换SQL语句中的危险字符
     */
    public String prepSql(String tag) {
        String str = tag;
        if(tag != null){
          str = replaceString(str,"'","'+chr(39)+'").trim();
          str = replaceString(str,"&","'||'&'||'").trim();
        }
        return str;
    }

    /**
     * 中文转换 Unicode to GBK
     */
    public String UnicodeToGBK(String strIn)
    {
        //本地使用TOMCAT时，必须使用转换！
        String strOut = null;
        if(strIn == null || (strIn.trim()).equals(""))return strIn;
        try{
            byte[] b = strIn.getBytes("ISO8859_1");
            strOut = new String(b,"GB2312");
        }
        catch(Exception e)
        {}
        //return strOut;
        return strIn;
    }

    /**
     *
     */
    public String findKeyByValueOfHashble(Hashtable ht,String theStr){
        Enumeration en=ht.keys();
        String linStr=null;
        while(en.hasMoreElements()){
            linStr=(String)en.nextElement();
            if(ht.get(linStr).equals(theStr))return linStr;
        }
        return "";
    }
    /**
     *
     */
    public String[] getArray(String[][] strArr,int num){
        if(strArr!=null&&(num>=0&&num<strArr[0].length)){
            String[] strRtn=new String[strArr.length];
            for(int i=0;i<strArr.length;i++){
                strRtn[i]=strArr[i][num];
            }
            return strRtn;
        }
        return null;
    }
    /**
     * 获取日期+时间，格式为“2000年10月10日 11：21：21”
     */
    public String getDateAndTime(java.util.Date date) {
        if(date==null){
       TimeZone tz1=TimeZone.getDefault();
       TimeZone tz2=TimeZone.getTimeZone("Asia/Shanghai");
       int tmOffset=(tz2.getRawOffset()-tz1.getRawOffset())/(60*60*1000);
       Locale lc=Locale.CHINA;
       Calendar cld=Calendar.getInstance(tz2,lc);
       cld.add(Calendar.HOUR_OF_DAY,tmOffset);
       date=cld.getTime();
        }
        SimpleDateFormat formatter=null;
        formatter = new SimpleDateFormat ("yyyy-MM-dd HH:mm:ss");

        String dateString = formatter.format(date);
        return dateString;

        /*
        Calendar cld=new Calendar();
        cld.setTime(date);
        StringBuffer sb=new StringBuffer();
        sb.append(cld.get(Calendar.YEAR)+"年");
        sb.append(cld.get(Calendar.MONTH)+"月");
        sb.append(cld.get(Calendar.DAY_OF_MONTH)+"日");
        */
    }
    /**
     * 获取日期，格式为“2000-10-10”
     */
    public String getDate(java.util.Date date) {
        if(date==null)date=new java.util.Date();
        SimpleDateFormat formatter=null;
        formatter = new SimpleDateFormat ("yyyy-MM-dd");

        String dateString = formatter.format(date);
        return dateString;
    }
    /**
     * 获取时间，格式为“11：21：21”
     */
    public String getTime(java.util.Date date) {
        if(date==null)date=new java.util.Date();
        SimpleDateFormat formatter=null;
        formatter = new SimpleDateFormat ("HH:mm:ss");

        String dateString = formatter.format(date);
        return dateString;
    }
    /**
     * 隐藏Ip地址最后一段
     */
    public String getHideIP(String ip){
        int pos=ip.lastIndexOf(".");
        return ip.substring(0,pos+1)+"***";
    }
    /**
     * 检查权限
     */
    public boolean checkRight(HttpServletResponse response,Hashtable ht,HttpSession session,String userClass,String absURL){
          boolean bool=true;
        try{
            Object obj=session.getAttribute("mySession");
            if(obj!=null){
                Hashtable mySession=(Hashtable)obj;
                //如果操作员userClass>制定userClass，则无权限
                if(Integer.parseInt((String)mySession.get("userClass"))>Integer.parseInt(userClass)){
                    alertPage(response,7000,null);
                    bool=false;
                }
            }
            else{
                session.setAttribute("hashtable",ht);
                //session.setAttribute("testVars",ht==null?"true":"false");
                response.sendRedirect(siteURL+"/include/login.jsp?toURL="+absURL);
                bool=false;
            }

        }catch(Exception e){bool=false;}
        finally{return bool;}

    }
    /**
     * 检查是否处于Debug状态
     */
    public boolean isDebug(HttpServletRequest request,boolean pageDebug){
        if(pageDebug)return true;
        try{
            String urlDebug=request.getParameter("debug");
            if(urlDebug.equalsIgnoreCase("yes"))return true;
            else return false;
        }catch(Exception e){return false;}
    }
    /**
     * 统一报错方法
     */
    public void alertPage(HttpServletResponse response,int errorID,String errMsg) {
        try{
            PrintWriter out=response.getWriter();

            if(errMsg==null)errMsg="";

            Hashtable ht=new Hashtable();
            ht.put("7771","测试错误1！");
            ht.put("7772","测试错误2！");
            ht.put("7773","测试错误3！");
            ht.put("7774","测试错误4！");
            ht.put("7775","测试错误5！");
            ht.put("7776","测试错误6！");

            ht.put("7777",new Integer("10000"));  //10000->未知的返回类型; 7777->不明错误！
            ht.put("7000",new Integer("1001"));   //1001->权限错误; 7000->对不起，你无权执行该项操作！
            ht.put("7001",new Integer("1003"));   //1003->信息输入错误; 7001->传入参数有错！
            ht.put("7002",new Integer("1002"));   //1002->没有找到符合要求的数据; 7002->连接数据库出错！
            ht.put("7003",new Integer("1007"));   //1007->功能未实现; 7003->执行任务失败！
            ht.put("7004",new Integer("1004"));   //1004->缺少操作对象错误; 7004->操作数据库失败！
            ht.put("7005",new Integer("1111"));   //1111当前会话已经过期; 7005 读取Session错误！
            ht.put("8000",new Integer("1000"));   //操作成功

            Object theObj=ht.get(String.valueOf(errorID));
            if(theObj.getClass().getName().equals("java.lang.String")){
                String outMsg="<body bgcolor='#E8F8F8'><center><br><br><br><br><br>"+theObj+"</center>";
                if(errMsg!=null)outMsg=outMsg+"<center><br><br>Error Details:<br><br><br>"+errMsg+"</center></body>";
                out.println(outMsg);/**/
            }
            else{
                String errUrl=siteURL+"/include/message.jsp?&errno="+theObj;
                response.sendRedirect(errUrl);
            }
        }catch(Exception e){}
    }
%>