stringutil2.java

java实现的可配置的工作流引擎,采用jsp+javabean实现

package com.hongsoft.res.util;

import java.sql.Timestamp;
import java.text.SimpleDateFormat;

import org.apache.commons.lang.StringUtils;

/**
 * <p>Title: 广州流程系统</p>
 * <p>Description: 字符串的工具类,参见<code>StringUtils</code></p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: zznode</p>
 * @author He Ping
 * @version 1.0
 */

public class StringUtil2 extends StringUtils{

  /**
   * Replaces all instances of oldString with newString in line.
   *
   * @param line the String to search to perform replacements on
   * @param oldString the String that should be replaced by newString
   * @param newString the String that will replace all instances of oldString
   *
   * @return a String will all instances of oldString replaced by newString
   */
  public static final String replace(String line, String oldString,
                                     Object[] newString) {
    if (line == null) {
      return null;
    }
    int i = 0;
    if ( (i = line.indexOf(oldString, i)) >= 0) {
      char[] line2 = line.toCharArray();
      int oLength = oldString.length();
      StringBuffer buf = new StringBuffer(line2.length);
      int index=0;
      char[] newString2 = newString[index].toString().toCharArray();
      buf.append(line2, 0, i).append(newString2);
      i += oLength;
      int j = i;
      while ( (i = line.indexOf(oldString, i)) > 0) {
        index++;
        if(newString.length>index){
          newString2=newString[index].toString().toCharArray();
          buf.append(line2, j, i - j).append(newString2);
        }else{
          buf.append(line2, j, i - j).append(oldString);
        }
        i += oLength;
        j = i;
      }
      buf.append(line2, j, line2.length - j);
      return buf.toString();
    }
    return line;
  }

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

  public static String nullToString(int str){
    return String.valueOf(str);
  }

  public static String nullToString(long str){
    return String.valueOf(str);
  }

  public static String nullToString(double str){
    return String.valueOf(str);
  }

  public static String nullToString(float str){
    return String.valueOf(str);
  }

  public static String nullToString(boolean str){
    return String.valueOf(str);
  }

  public static String nullToString(char str){
    return String.valueOf(str);
  }

  	public static String TimestampToString(Timestamp time)
  	{
		return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(time);
  	}
}