stringserializer.java

《j2ee开发全程实录》随书源码

package com.cownew.ctk.io;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

import com.cownew.ctk.common.EnvironmentUtils;

public class StringSerializer
{
	public static void saveToFile(String s, String fileName) throws IOException
	{
		DataOutputStream dos = null;
		BufferedWriter bw = null;
		try
		{
			dos = (new DataOutputStream(
					new FileOutputStream(new File(fileName))));
			bw = new BufferedWriter(new OutputStreamWriter(dos));
			bw.write(s);
			bw.flush();
		} finally
		{
			ResourceUtils.close(dos);
			ResourceUtils.close(bw);
		}
	}

	public static String loadFromFile(String fileName) throws IOException
	{
		DataInputStream dis = null;
		BufferedReader reader = null;
		StringBuffer sb = new StringBuffer();
		String string;
		try
		{
			dis = new DataInputStream(new FileInputStream(new File(fileName)));
			reader = new BufferedReader(new InputStreamReader(dis));
			String s = null;
			do
			{
				s = reader.readLine();
				if (s != null)
					sb.append(s).append(EnvironmentUtils.getLineSeparator());
			} while (s != null);
			string = sb.toString();
		} finally
		{
			ResourceUtils.close(dis);
			ResourceUtils.close(reader);
		}
		return string;
	}

}