typeconverter.java

上海移动通信企信通客户端接口例程,采用Empp API函数

import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.TimeZone;

/**
 * 时间、字符、字节流等常用类型转换类。
 * @author Administrator
 *
 */
public class TypeConverter 
{
	/**
	 * InputStream转换为String
	 * @param input
	 * @return
	 * @throws IOException
	 */
	public static String inputStream2String( InputStream input ) throws IOException
	{
		byte b;
		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		while((b=(byte)input.read())!=-1)
		{
		    baos.write(b);
		}
		return baos.toString();
	}
	
	/**
	 * 字符串编码
	 * @param content 待编码的字符串
	 * @param encodingCharsetName 编码字符集
	 * @return
	 */
	public static String stringEncode( String content, String encodingCharsetName )
	{
		String encodedContent = "";
		try 
		{
			encodedContent = URLEncoder.encode( content, encodingCharsetName );
		} 
		catch (UnsupportedEncodingException e1) 
		{
			e1.printStackTrace();
		}
		return encodedContent;
	}
	
	/**
	 * 字符串解码
	 * @param content 待解码的字符串
	 * @param decodingCharsetName 解码字符集
	 * @return
	 */
	public static String stringDecode( String content, String decodingCharsetName )
	{
		String decodeContent = "";
		try 
		{
			decodeContent = URLDecoder.decode( content, decodingCharsetName ) ;
		} 
		catch (UnsupportedEncodingException e) 
		{
			e.printStackTrace();
		}
		return decodeContent;
	}
	
	/**
	 * 判断一个字符是否为数字
	 * @param src
	 * @return
	 */
	public static boolean isNumber( char c )
	{
		if( (c=='-') || (c>='0'&&c<='9') )
		{
			return true;
		}
		else
		{
			return false;
		}
	}
	
	/**
	 * 判断一个字符串是否为数字
	 * @param src
	 * @return
	 */
	public static boolean isNumber( String src )
	{
		for( int i=0;i<src.length();i++ )
		{
			char c = src.charAt(i);
			if( (c!='-') && !(c>=1&&c<=9) )
			{
				return false;
			}
		}
		return true;
	}
	
	/**
	 * 字符串转换为整数
	 * @param src
	 * @return
	 */
	public static int stringToint( String src )
	{
		return Integer.valueOf(src).intValue();
	}
	
	/**
	 * 用平台默认字符集编码后，再用charsetName字符集解码
	 * @param content
	 * @param charsetName
	 * @return
	 */
	public static String newStringByDecoding( String content, String charsetName )
	{
		try 
		{
			return new String( content.getBytes(), charsetName );
		} 
		catch (UnsupportedEncodingException e) 
		{
			e.printStackTrace();
			return "";
		}
	}
	
	/**
	 * 用encodeCharsetName字符集编码后，再用decodeCharsetName字符集解码
	 * @param content
	 * @param charsetName
	 * @return
	 */
	public static String newStringByDecoding( String content, String encodeCharsetName, String decodeCharsetName )
	{
		try 
		{
			return new String( content.getBytes(encodeCharsetName), decodeCharsetName );
		} 
		catch (UnsupportedEncodingException e) 
		{
			e.printStackTrace();
			return "";
		}
	}
	
	/**
	 * 获取当前时间字符串，格式为yyyy-MM-dd HH:mm:ss
	 * @return
	 */
	public static String getCurrentTime()
	{
		Calendar calendar = Calendar.getInstance();
		SimpleDateFormat dateformat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		dateformat.setTimeZone( TimeZone.getTimeZone("GMT+08:00") );
		Date date = calendar.getTime();		
		return dateformat.format( date );
	}
	
	/**
	 * 获取当前时间字符串，格式为yyyyMMddHHmmss
	 * @return
	 */
	public static String getCurrentTime4DB()
	{
		Calendar calendar = Calendar.getInstance();
		SimpleDateFormat dateformat = new SimpleDateFormat("yyyyMMddHHmmss");
		dateformat.setTimeZone( TimeZone.getTimeZone("GMT+08:00") );
		Date date = calendar.getTime();		
		return dateformat.format( date );
	}
	
	/**
	 * 读取TXT文本文件内容
	 * @param fileName
	 * @return
	 */
	public static String getTxtString( String fileName )
	{
		String retStr = "";
		FileReader reader = null;
		try 
		{
			reader = new FileReader( fileName );
			BufferedReader br = new BufferedReader(reader);
			String s1 = "";
			while((s1 = br.readLine()) != null) 
			{
				retStr += s1 + "\n";				  
			}
			br.close();
			reader.close();
		} 
		catch (FileNotFoundException e) 
		{
			System.out.println( e.getMessage() );
		}
		catch (IOException e) 
		{
			System.out.println( e.getMessage() );
		}
		return retStr.trim();
	}
	
	/**
	 * 测试
	 * @param args
	 */
	public static void main( String[] args )
	{
		if( 0 == TypeConverter.stringToint( "0" ) )
		{
			System.out.println( "0==0" );
		}
		
		if( TypeConverter.isNumber( '-' ) )
		{
			System.out.println( "字符'-'是数字" );
		}
		
		String retStr = "\r\n\r\n-2\r\n\r\n";
		System.out.println( "retStr=" + retStr );		
		String result = "";
		for( int k=0;k<retStr.length();k++ )
		{
			char ch = retStr.charAt(k);
			if( TypeConverter.isNumber(ch) )
			{
				result += ch;
			}
		}
		System.out.println( "result=" + result + "." );		
		int resultInt = TypeConverter.stringToint(result);
		System.out.println( "resultInt=" + resultInt + "." );
		
		String src = "鍏