?? dealstring.java
字號(hào):
/**********************************************************
Copyright (C),2003-10-12, Beijing USTB.
All rights reserved.
Filename: DealString.java
Author: 劉中兵
Version 1.0
Date:2003-10-12
Description:此文件為字符串的處理類
Other:
Variable List:
Function List:
1.public DealString()//構(gòu)造函數(shù)
2.public String toString(String str)//把null轉(zhuǎn)化為"",trim()
3.public String toGBK(String str)//轉(zhuǎn)換編碼
public String toUtf8String(String src)
4.public String[] splitStr(String str,char c)//分割字符串
5.public String getDateTime()//取得系統(tǒng)時(shí)間
6.public String Replace(String source, String oldString, String newString)//替換字符串
7.public long getDaysInterval(Date d1,Date d2)//取得兩個(gè)日期的天數(shù)之差
8.public String toLengthStr(String instr,int len)//將字符串格式化為固定長(zhǎng)度
9.public String toLengthStrRight(String instr,int len)//將字符串格式化為固定長(zhǎng)度(右邊補(bǔ)空格)
//9.public String AsciiToChineseString(String s)//ASCII轉(zhuǎn)化為字符串
//10.public String ChineseStringToAscii(String s)//字符串轉(zhuǎn)化為ASCII
11.public String UnicodetoGB(String s)//Unicode轉(zhuǎn)化成GB的源碼
12.public int toASCII(char c)//字符轉(zhuǎn)化為ASCII
public String toASCII(String s)
13.public int byteLength(String)//取得字符字節(jié)長(zhǎng)度
14.public String strByteCopy(String str,int nEnd)//取得字符串從頭開(kāi)始指定長(zhǎng)度子串
15.public boolean strMatch(String motherStr,String childStr)//取得字符串從頭開(kāi)始指定長(zhǎng)度子串 new 陳
16.public String strDistinct(String str)//將str中重復(fù)的去掉 new 劉建
17 public Vector simplify(String[] str) //過(guò)濾數(shù)組 0 代表所有的
18 public Vector simplify(Vector vstr) //過(guò)濾向量 0 代表所有的
19.public String toMKByte(int size) //格式化文件大小
20 public int getRandom(int min , int max );
21 public String toLikeSql()
History:
***********************************************************/
package com.util;
import java.util.*;
import java.text.*;
import java.lang.*;
import sun.io.*;
public class DealString
{
public long makeID ( int uid )
{
//用戶占5位
uid += 10000 ;
//時(shí)間占9位:秒，去掉第一位
java.util.Date time = new java.util.Date();
long second = time.getTime() / 1000 ;
String str = second + "" ;
str = str.substring(1,str.length());
//群發(fā)占5位
str = uid + str + 10000 ;
return Long.parseLong(str);
}
public String toLikeSql ( int sum , int cur , char like , char c )
{
char ch[] = new char[sum] ;
for ( int i = 0 ; i < sum ; i++ )
{
ch[i] = like ;
}
ch[cur] = c ;
String str = new String ( ch ) ;
return str ;
}
public int getRandom ( int min , int max , int seed )
{
String time = getDateTime ( ) ;
Random rand ;
if ( seed == 0 )
{
rand = new Random ( Integer.parseInt( time .substring ( 17 , 19 ) ) ) ;
}
else
{
rand = new Random ( seed ) ;
}
int t = rand.nextInt(max);
while ( t < min )
{
t = rand.nextInt(max);
}
return t ;
}
/**把null轉(zhuǎn)化為""*/
public String toString(String str)
{
if(str==null)str = "";
if(str.equals("null"))str = "";
str = str.trim();
return str;
}
public String toMKByte(long size)
{
if(size>=(1024*1024))
{
String temp = ((float)size/(1024*1024)+"");
if(temp.length()==3)temp+="0";
temp = temp.substring(0,4);
if(temp.charAt(3)=='.')temp=temp.substring(0,3);
if(temp.charAt(2)=='.'&&temp.charAt(3)=='0')temp=temp.substring(0,2);
if(temp.charAt(1)=='.'&&temp.charAt(2)=='0'&&temp.charAt(3)=='0')temp=temp.substring(0,1);
temp+="MB";
return temp;
}
else if(size>=1024)
{
String temp = ((float)size/(1024*1024)+"");
if(temp.length()==3)temp+="0";
temp = temp.substring(0,4);
if(temp.charAt(3)=='.')temp=temp.substring(0,3);
if(temp.charAt(2)=='.'&&temp.charAt(3)=='0')temp=temp.substring(0,2);
if(temp.charAt(1)=='.'&&temp.charAt(2)=='0'&&temp.charAt(3)=='0')temp=temp.substring(0,1);
temp+="KB";
return temp;
}
else
{
return size+"B";
}
}
/**轉(zhuǎn)換編碼*/
public String toGBK(String str)
{
try
{
if(str==null)
str = "";
else
str=new String(str.getBytes("ISO-8859-1"),"GBK");
}catch (Exception e) {System.out.println("DealString::toGBK(String)運(yùn)行時(shí)出錯(cuò)：錯(cuò)誤為："+e);}
return str;
}
/**UTF8*/
public String toUtf8String(String src)
{
byte[] b = src.getBytes();
char[] c = new char[b.length];
for(int i=0;i<b.length;i++)
{
c[i] = (char)(b[i]&0x00FF);
}
return new String(c);
}
public String toASCII(String str)
{
try
{
if(str==null)
str = "";
else
str=new String(str.getBytes("GBK"),"ISO-8859-1");
}catch (Exception e) {System.out.println("DealString::toGBK(String)運(yùn)行時(shí)出錯(cuò)：錯(cuò)誤為："+e);}
return str;
}
/**分割字符串*/
public String[] splitStr(String str,char c)
{
str+=c;
int n=0;
for(int i=0;i<str.length();i++)
{
if(str.charAt(i)==c)n++;
}
String out[] = new String[n];
for(int i=0;i<n;i++)
{
int index = str.indexOf(c);
out[i] = str.substring(0,index);
str = str.substring(index+1,str.length());
}
return out;
}
/**取得系統(tǒng)時(shí)間*/
public String getDateTime()
{
java.text.SimpleDateFormat f = new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String time = f.format(new java.util.Date());
return time;
}
/**替換字符串*/
public String Replace(String source, String oldString, String newString)
{
StringBuffer output = new StringBuffer();
int lengthOfSource = source.length(); // 源字符串長(zhǎng)度
int lengthOfOld = oldString.length(); // 老字符串長(zhǎng)度
int posStart = 0; // 開(kāi)始搜索位置
int pos; // 搜索到老字符串的位置
while ((pos = source.indexOf(oldString, posStart)) >= 0) {
output.append(source.substring(posStart, pos));
output.append(newString);
posStart = pos + lengthOfOld;
}
if (posStart < lengthOfSource) {
output.append(source.substring(posStart));
}
return output.toString();
}
/**取得兩個(gè)日期的天數(shù)之差*/
public long getDaysInterval(Date d1,Date d2)
{
return (d2.getTime()-d1.getTime())/86400000;
}
/**將字符串格式化為固定長(zhǎng)度*/
public String toLengthStr(String instr,int len)
{
int n = instr.length();
for(int i=0;i<(len-n);i++)
{
instr = " "+instr;
}
return instr;
}
/**將字符串格式化為固定長(zhǎng)度(右邊補(bǔ)空格)*/
public String toLengthStrRight(String instr,int len)
{
int n = instr.length();
for(int i=0;i<(len-n);i++)
{
instr = instr+" ";
}
return instr;
}
/*ASCII轉(zhuǎn)化為字符串*/
public String AsciiToChineseString(String s)
{
char[] orig = s.toCharArray();
byte[] dest = new byte[orig.length];
for (int i=0;i<orig.length;i++)
dest[i] = (byte)(orig[i]&0xFF);
try
{
ByteToCharConverter toChar = ByteToCharConverter.getConverter("gb2312");
return new String(toChar.convertAll(dest));
}
catch (Exception e)
{
System.out.println("DealString::AsciiToChineseString(String)運(yùn)行時(shí)出錯(cuò)；錯(cuò)誤為："+e);
return s;
}
}
/**字符串轉(zhuǎn)化為ASCII*/
public String ChineseStringToAscii(String s)
{
try
{
CharToByteConverter toByte = CharToByteConverter.getConverter("gb2312");
byte[] orig = toByte.convertAll(s.toCharArray());
char[] dest = new char[orig.length];
for (int i=0;i<orig.length;i++)
dest[i] = (char)(orig[i] & 0xFF);
return new String(dest);
}
catch (Exception e)
{
System.out.println("DealString::ChineseStringToAscii(String)運(yùn)行時(shí)出錯(cuò)："+e);
return s;
}
}
/**Unicode轉(zhuǎn)化成GB的源碼*/
public String UnicodetoGB(String s)
{
StringBuffer sb = new StringBuffer();
boolean escape = false;
for(int i=0; i<s.length(); i++)
{
char c = s.charAt(i);
switch (c)
{
case '\\': escape = true; break;
case 'u':
case 'U':
if(escape)
{
try
{
sb.append((char)Integer.parseInt(s.substring(i+1,i+5),16));
escape = false;
}
catch(NumberFormatException e)
{ System.out.println("DealString::UnicodetoGB(String)運(yùn)行時(shí)出錯(cuò)："+e+"并拋出新的IllegalArgumentException異常.");
throw new IllegalArgumentException();
}
i += 4;
}
else
{
sb.append(c);
}
break;
default:sb.append(c); break;
}
}
return sb.toString();
}
/*將str中重復(fù)的去掉*/
public String strDistinct(String str)
{
String[] strArr=str.split(",");
String strAim = ",";
for(int i=0;i<strArr.length;i++)
{
if(strArr[i].equals(""))
continue;
if (strAim.indexOf(","+strArr[i]+",")==-1)
{
strAim = strAim + strArr[i] + ",";
}
}
if(!strAim.equals(","))
strAim = strAim.substring(1,strAim.length()-1);
else strAim = "";
return strAim;
}
/**字符轉(zhuǎn)化為ASCII*/
public int toASCII(char c)
{
int i = c;
return i;
}
/**取得字符字節(jié)長(zhǎng)度*/
public int byteLength(String str)
{
return ((str.getBytes()).length);
}
/**取得字符串從頭開(kāi)始指定長(zhǎng)度子串*/
public String strByteCopy(String str,int nEnd)
{
if(nEnd==0)
return "";
byte[] byteStr=str.getBytes();
int k=byteStr.length;
String strSub=new String(byteStr,0,nEnd<k?nEnd:k);
if (strSub.length()==0) strSub=new String(byteStr,0,nEnd-1);
return strSub;
}
public boolean strMatch(String motherStr,String childStr)
{
boolean matched=false;
int mLength=motherStr.length();
int cLength=childStr.length();
int starWith;
if(mLength>=cLength){
starWith=mLength-cLength;
for(int i=0;i<=starWith;i++){
matched=motherStr.startsWith(childStr,i);
if(matched)break;
}
}
return matched;
}
/*
//把字符串轉(zhuǎn)化為以ＵＴＦ８編碼
public String toUtf8String(String s) {
StringBuffer sb = new StringBuffer();
for (int i=0;i<s.length();i++) {
char c = s.charAt(i);
if (c >= 0 && c <= 255) {
sb.append(c);
}
else {
byte[] b;
try {
b = Character.toString(c).getBytes("utf-8");
}
catch (Exception ex) {
System.out.println(ex);
b = new byte[0];
}
for (int j = 0; j < b.length; j++) {
int k = b[j];
if (k < 0)
k += 256;
sb.append("%" + Integer.toHexString(k).
toUpperCase());
}
}
}
return sb.toString();
}
*/
public Vector simplify(String[] str){
Vector vect = new Vector();
for(int i=0;i<str.length;i++)
vect.add(str[i]);
for(int i=0;i<vect.size();i++){
String[] s1 = ((String)vect.get(i)).split("_");
for(int j=i+1;j<vect.size();){
boolean out = true;
String[] s2 = ((String)vect.get(j)).split("_");
for(int k=0;k<s1.length;k++){
if(!s1[k].equals(s2[k])&&!s1[k].equals("0")){
out = false;
break;
}
}
if(out)
vect.remove(j);
else
j++;
}
}
return vect;
}
public Vector simplify(Vector vstr){
Vector vect = new Vector();
for(int i=0;i<vstr.size();i++)
vect.add(vstr.get(i));
for(int i=0;i<vect.size();i++){
String[] s1 = ((String)vect.get(i)).split("_");
for(int j=i+1;j<vect.size();){
boolean out = true;
String[] s2 = ((String)vect.get(j)).split("_");
for(int k=0;k<s1.length;k++){
if(!s1[k].equals(s2[k])&&!s1[k].equals("0")){
out = false;
break;
}
}
if(out)
vect.remove(j);
else
j++;
}
}
return vect;
}
public static void main(String args[]) throws Exception
{
DealString mb = new DealString();
System.out.println("begin\r\n\r\n");
/* System.out.println("Please input string to be translated");
String oldStr = null;
java.io.BufferedReader in = new java.io.BufferedReader(new java.io.InputStreamReader(System.in));
oldStr = in.readLine();
while(oldStr!=null)
{
System.out.println(mb.UnicodetoGB(oldStr));
oldStr = in.readLine();
}
*/
System.out.println(mb.toMKByte(2*1024*1024));
System.out.print("fdsafd");
System.out.print("\rggggggggggggggg");
System.out.println("\rend ");
}
};?? 快捷鍵說(shuō)明
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