Java一些格式化的通用代码

import javax.servlet.http.HttpServletRequest;
public class Format {
    public Format() {
    }

    public static String parseString(int value) {
        String val = "";

        try {
            val = Integer.toString(value);
        } catch (Exception ex) {
            System.out.println("Parse Failure!");
        }

        return val;
    }

    public static Integer parseInteger(String str){
        if(str==null){
            return new Integer(0);
                    }else{
                return     new Integer(Format.parseInt(str));
                    }
    }
    
    public static Integer parseInteger(int s){
    return     new Integer(s);
    }
    
    public static String parseString(Timestamp tdate) {
        if (tdate == null) {
            return "";
        } else {
            SimpleDateFormat myFormat = new SimpleDateFormat("yyyy-MM-dd");
            Date date = new Date(tdate.getTime());

            try {
                String sdate = myFormat.format(date);

                return sdate.trim();
            } catch (Exception ex) {
                System.out.println("Parse Failure!");
            }
        }

        return "";
    }
    
    public static String parseString(Date tdate) {
        if (tdate == null) {
            return "";
        } else {
            SimpleDateFormat myFormat = new SimpleDateFormat("yyyy-MM-dd");
            Date date = new Date(tdate.getTime());

            try {
                String sdate = myFormat.format(date);

                return sdate.trim();
            } catch (Exception ex) {
                System.out.println("Parse Failure!");
            }
        }

        return "";
    }
    
    public static String parseStringB(Date tdate) {
        if (tdate == null) {
            return "";
        } else {
            SimpleDateFormat myFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            Date date = new Date(tdate.getTime());

            try {
                String sdate = myFormat.format(date);

                return sdate.trim();
            } catch (Exception ex) {
                System.out.println("Parse Failure!");
            }
        }

        return "";
    }

    public static int parseInt(String value) {
        String val = value;

        if ((val == null) || (val.length() == 0)) {
            return 0;
        }

        val = val.trim();

        try {
            return Integer.parseInt(val);
        } catch (Exception ex) {
            System.out.println("Parse Failure!");
        }

        return 0;
    }

    public static int parseInt(String value, int dfvalue) {
        String val = value;

        if ((val == null) || (val.length() == 0)) {
            return dfvalue;
        }

        val = val.trim();

        try {
            return Integer.parseInt(val);
        } catch (Exception ex) {
            System.out.println("Parse Failure!");
        }

        return dfvalue;
    }

    public static double parseDouble(String value) {
        String val = value;

        if ((val == null) || (val.length() == 0)) {
            return 0;
        }

        val = val.trim();

        try {
            return Double.parseDouble(val);
        } catch (Exception ex) {
            System.out.println("Parse Failure!");
        }

        return 0;
    }

    public static Date parseDate(Timestamp time) {
        Date date = new Date(time.getTime());

        return date;
    }

    public static Date parseDate(String date) {
        if ((date == null) || (date.length() == 0)) {
            return null;
        }

        date = date.trim();

        SimpleDateFormat myFormat = new SimpleDateFormat("yyyy-MM-dd");

        try {
            Date tdate = myFormat.parse(date);

            return tdate;
        } catch (Exception e) {
            System.out.println("Parse Failure!");
        }

        return null;
    }

    public static Timestamp parseTimestamp(Date date) {
        Timestamp time = new Timestamp(date.getTime());

        return time;
    }

    public static Timestamp parseTimestamp(String date) {
        if ((date == null) || (date.length() == 0)) {
            return null;
        }

        date = date.trim();

        SimpleDateFormat myFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

        try {
            Date tdate = myFormat.parse(date);
            Timestamp ttime = new Timestamp(tdate.getTime());

            return ttime;
        } catch (Exception e) {
            System.out.println("Parse Failure!");
        }

        return null;
    }

    public static String toString(String str) {
        return (str == null) ? "" : str.trim();
    }

    public static String toString(Timestamp tdate) {
        return (tdate == null) ? "" : parseString(tdate).trim();
    }

    public static String toString(double d) {
        return (d == 0) ? "" : Double.toString(d).trim();
    }

    public static String toString(int i) {
        return (i == 0) ? "" : Integer.toString(i).trim();
    }

    public static String jqString(String content, int number) {//get the characters from location 0 to number(jq stands for jian qie) 
        String temp;

        if (content.length() > number) {
            temp = content.substring(0, number);
        } else {
            temp = content;
        }

        return temp;
    }

    public static String left(String content, int number) {
        String temp;

        if (content.length() > number) {
            temp = content.substring(0, number);
            int l = temp.length();
            int idxOfAND = temp.substring(l - 5, l).indexOf("&");
            if( idxOfAND >= 0) {
                temp = temp.substring(0, l - 5 + idxOfAND);
            }
            temp += "...";
        } else {
            temp = content;
        }
        
        return temp;
    }
    
    
    public static String tohtml( String a )
    {
        String temp;
        
        temp = a.replaceAll("\r\n","<br>");
        temp = temp.replaceAll("&lt;", "<");
        temp = temp.replaceAll("&gt;", ">");
        temp = temp.replaceAll("&amp;", "&");
        temp = temp.replaceAll("&quot;", "\"");
        
        return temp;
    }
    
    
    public static String htmlEncode(String source) {
        if(source==null){
            return "";
        }
        String html = "";
        StringBuffer buffer = new StringBuffer();

        for (int i = 0; i < source.length(); i++) {
            char c = source.charAt(i);

            switch (c) {
            case '<':
                buffer.append("&lt;");

                break;

            case '>':
                buffer.append("&gt;");

                break;

            case '&':
                buffer.append("&amp;");

                break;

            case '"':
                buffer.append("&quot;");

                break;

            case 10:
            case 13:
                break;

            default:
                buffer.append(c);
            }
        }

        html = buffer.toString();

        return html;
    }
    
    
    public static void setTable(HttpServletRequest request, PageTable table) {
        String page = request.getParameter("page");
        String order = request.getParameter("order");
        String orderMode = request.getParameter("orderMode");
        int ipage = 1;
        if (page == null || page.length() == 0 || page.equals("null")) {
        } else {
            ipage = Integer.parseInt(page);
        }

        if (order == null) {
        } else {
            table.setOrder(order);// 排序字段
        }

        if (orderMode == null) {
        } else {
            table.setOrderMode(orderMode);// asc Or desc
        }
        table.setPage(ipage);
        table.setPageSize(10);
    }

    public static void setTable(HttpServletRequest request, PageTable table,
            int pageSize) {
        String page = request.getParameter("page");
        String order = request.getParameter("order");
        String orderMode = request.getParameter("orderMode");
        int ipage = 1;
        if (page == null) {
        } else {
            ipage = Integer.parseInt(page);
        }

        if (order == null) {
        } else {
            table.setOrder(order);// 排序字段
        }

        if (orderMode == null) {
        } else {
            table.setOrderMode(orderMode);// asc Or desc
        }
        table.setPage(ipage);
        table.setPageSize(pageSize);
    }
    
    /**
     * 四舍五入，对指定数字进行保留小数位转换
     * @param inNumber - float 将转换的数字
     * @param param - int 保留的小数位
     * */
    public static String round(float inNumber,int param){
        String format="#.";
        for(int i=0;i<param;i++){
            format=format.concat("#");
        }
        //去掉多余小数点
        if(param==0){
            format=format.substring(0,format.toString().length()-1);
        }
        java.text.DecimalFormat df =new java.text.DecimalFormat(format);
        return df.format(inNumber);
    }
    public static String replacestring(String from,String to,String source)
    {
        StringBuffer bf= new StringBuffer("");
        StringTokenizer st = new StringTokenizer(source,from,true);
        while (st.hasMoreTokens())
        {
        String tmp = st.nextToken();
        
        if(tmp.equals(from))
        {
        bf.append(to);
        }
        else
        {
        bf.append(tmp);
        }
        }
        return bf.toString();
        }

    public static String changline(String str,int i){
         String strnew="";
         String strtem=str;
                while(strtem.length()>i){
                strnew=strnew+"<tr>"+jqString(strtem,i)+"</tr>";
                strtem=strtem.substring(i,strtem.length());
                
                }
                
        return strnew+"<tr>"+strtem+"</tr>";
    }
    
}