commonfunction.java

广州物价系统开发部分模块

package gzwj.common;

import java.io.File;
import java.io.IOException;
import java.security.MessageDigest;
import java.util.ArrayList;
import java.util.Vector;


public class CommonFunction {
	public CommonFunction()
	{
	} 
	//   用户
	public static String Function_addslash(String input_string)
	{
		String F_input_string = input_string;
		
		//在此扩展数据过滤代码 
		
		return 	F_input_string;
	}
	
	//字符编码转换 中文乱码
	public static String Function_conv(String conv_string,String Start_type,String Last_type)
	{
		String F_conv_string = conv_string;
		String F_Start_type = Start_type;
		String F_Last_type = Last_type;
		
		if ( F_Start_type == "" )
		{
			F_Start_type = "ISO-8859-1";	
		}
		
		if (F_Last_type == "")
		{
			F_Last_type = "GB2312";	
		}
		
		try
		{
			F_conv_string =new String(F_conv_string.getBytes(F_Start_type),F_Last_type);
		}catch(Exception e)
		{
			System.out.print("字符编码转换错误");	
		} 
		
		return F_conv_string;
		 
	}
	
	public static String Function_getCurrent_time()
	{
		String current_time = "";
		try{ 
			current_time = new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new java.util.Date());
			
		}catch(Exception e)
		{
			System.out.println("时间格式错误");
		}
		return current_time;
	}
	//重载
	public static String Function_getCurrent_time(String time_format)
	{
		String current_time = "";
		try{			
			//System.out.println(new java.text.SimpleDateFormat(time_format).format(new java.util.Date()));
			current_time = new java.text.SimpleDateFormat(time_format).format(new java.util.Date());
		
		}catch(Exception e)
		{
			System.out.println("时间格式错误");

		}
		return current_time;
	}
	
		
	public static ArrayList s_multi(int totle_number,
								 int current_page,
								 String action,
								 int select_page,
								 int page_number
								) 
	{
		//分页函数参数列表：
		//  1.int totle_number  //总条数
		//  2.int current_page  //当前页数
		//  3.String action     //当前操作
		//  4.int select_page   //goto...
		//  5.int page_number   //默认每页显示个数
	
		
		ArrayList multi = new ArrayList();
		//此Vector对象中将包含
		//			1.总个数
		//			2.每页显示数
		// 			3.总页数
		//			4.当前页数
		//			5.页数列表
		//          6.limit字符串
		current_page = Math.abs(current_page);
		
		if(page_number==0)
		{
			page_number = 16;
		 //默认每页显示个数；
		}
		 
		page_number = Math.abs(page_number);
		
		
		multi.add(0,new Integer(totle_number));           // 1
		multi.add(1,new Integer(page_number));            // 2
		
		
		int page_totle = 0;
		//总页数
		if(totle_number != 0)
		{
			
			
			Double temp = new Double (Math.ceil(Double.parseDouble(totle_number/page_number + "." + totle_number%page_number)));
		 	page_totle = temp.intValue();
		}
		multi.add(2,new Integer(page_totle));             // 3
		
		
		if(action.equals("HeadPage"))
		{
			current_page = 1;
			multi.add(3,new Integer(current_page));       // 4
		}
		
		if(action.equals("EndPage"))
		{
			current_page = page_totle;
			multi.add(3,new Integer(current_page));        // 4
		}
		
		if(action.equals("UpPage"))
		{ 
			current_page = current_page - 1;
			if(current_page <= 0)
			{
				current_page = 1;
				multi.add(3,new Integer(1)); 	
			}				     						   // 4
			else
				multi.add(3,new Integer(current_page)); 
				
		}
		
		if(action.equals("Goto"))
		{  
			current_page = select_page;
			multi.add(3,new Integer(select_page));         // 4 				
		}	
		
		if(action.equals("") || action.equals(null))
		{  
			multi.add(3,new Integer(1));       		    	 // 4 
				
		}	
		
		if(action.equals("NextPage"))
		{
			current_page = current_page + 1;
			if(current_page >= page_totle)
			{
				multi.add(3,new Integer(page_totle));       // 4
				current_page = page_totle;
			}			
			else
				multi.add(3,new Integer(current_page));
		}
		
		
		String list_option = "<option value=0>请选择</option>";
		for(int list_temp = 1;list_temp <= page_totle; list_temp++)
		{
			list_option = list_option + "<option value=" + list_temp + ">第" + list_temp + "页</option>";
		}
		multi.add(4,list_option);	
		
		multi.add(5,new Integer(Math.abs(current_page-1)*page_number));	
		
		return multi;
	} 
	
	public static  void Function_deleteDirectory(File dir) throws IOException {
		
		if( (dir == null) || !dir.isDirectory()) {
		throw new IllegalArgumentException(
		"Argument "+dir+" is not a directory. "
		);
		}
		File[] entries = dir.listFiles( );
		int sz = entries.length;
		for(int i=0; i<sz; i++) {
		if(entries[i].isDirectory( )) {
		Function_deleteDirectory(entries[i]);
		} else {
		entries[i].delete( );
		}
		}
		dir.delete();
	}
	
	public static void Function_delete_file(String path)
	{
		File file = new File(path); 
	 	file.delete();
	}
	
	public static String GetMD5String(String s)
	{ 
		char hexDigits[] = { 
		'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 
		'e', 'f'}; 
		try 
		{ 
			byte[] strTemp = s.getBytes(); 
			MessageDigest mdTemp = MessageDigest.getInstance("MD5"); 
			mdTemp.update(strTemp); 
			byte[] md = mdTemp.digest(); 
			int j = md.length; 
			char str[] = new char[j * 2]; 
			int k = 0; 
			for (int i = 0; i < j; i++) { 
			byte byte0 = md[i]; 
			str[k++] = hexDigits[byte0 >>> 4 & 0xf]; 
			str[k++] = hexDigits[byte0 & 0xf]; 
		} 
			return new String(str); 
		} 
		catch (Exception e)
		{ 
			return null; 
		} 
	} 
	
}