Ip合并

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.List;

public class Fileinfo extends Object {
	private FileWriter writer;
	private BufferedWriter bw;

	private FileReader reader;
	private BufferedReader br;

	private FileReadCallback callbackfun;

	public Fileinfo() {
		super();
	}

	public Fileinfo(FileReadCallback callbackfun) {
		super();
		this.callbackfun = callbackfun;
	}

	public void setMyCallback(FileReadCallback callbackfun) {
		this.callbackfun = callbackfun;
	}

	public boolean deleteFile(String sPath) {
		boolean flag = false;
		File file = new File(sPath);
		// 路径为文件且不为空则进行删除
		if (file.isFile() && file.exists()) {
			file.delete();
			flag = true;
		}
		return flag;
	}

	public boolean IsFileExist(String sPath) {
		boolean flag = false;
		File file = new File(sPath);
		// 路径为文件且不为空则进行删除
		if (file.isFile() && file.exists()) {
			flag = true;
		}
		return flag;
	}

	public boolean CheckAndCreateFile(String filepath) throws IOException {
		boolean flag;
		File file = new File(filepath);
		if (!file.isFile()) {
			file.createNewFile();
		}
		return IsFileExist(filepath);
	}

	public void Writeindex(String filepath, String value) {
		try {
			if (writer == null) {
				CheckAndCreateFile(filepath);
				writer = new FileWriter(filepath, false);
			}
			if (bw == null)
				bw = new BufferedWriter(writer);

			writer = new FileWriter(filepath, false);
			bw = new BufferedWriter(writer);
			bw.write(value);

			bw.flush();
			bw.close();
			// System.gc();

		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	public int Readlogindex(String filepath) {
		int result = 0;
		if (!IsFileExist(filepath)) {
			return result;
		}

		try {
			if (reader == null)
				reader = new FileReader(filepath);

			if (br == null)
				br = new BufferedReader(reader);

			try {
				String str = null;
				if ((str = br.readLine()) != null) {
					result = Integer.parseInt(str);
				}
			} finally {
				// reader.close();
				// br.close();
			}
		} catch (IOException e) {
			e.printStackTrace();
		}

		return result;
	}

	public void Write(String filepath, boolean append, List<String> datalist) {
		try {
			if (writer == null) {
				CheckAndCreateFile(filepath);
				writer = new FileWriter(filepath, append);
			}
			if (bw == null)
				bw = new BufferedWriter(writer);

			for (String index : datalist) {
				bw.write(index);
				bw.newLine();
			}
			bw.flush();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	public void Write(String filepath, boolean append, String value) {
		try {
			if (writer == null) {
				CheckAndCreateFile(filepath);
				writer = new FileWriter(filepath, true);
			}
			if (bw == null)
				bw = new BufferedWriter(writer);

			bw.write(value);
			bw.newLine();
			bw.flush();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	public void Read(String filepath) {
		try {
			FileReader reader = new FileReader(filepath);
			BufferedReader br = new BufferedReader(reader);

			String str = null;
			while ((str = br.readLine()) != null) {
				if (callbackfun != null) {
					callbackfun.read(str);
				}
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	protected void finalize() throws Throwable {
		super.finalize();
		System.out.println("finalize");

		if (writer != null)
			writer.close();

		if (bw != null)
			bw.close();

		if (reader != null)
			reader.close();

		if (br != null)
			br.close();
	}
}

import java.util.ArrayList;
import java.util.List;

import com.chexun.project.unit.*;

public class IpMerge implements FileReadCallback {
	 class  Ipdata {
		long start;
		long end;
		String area;
		
		public long getStart() {
			return start;
		}

		public void setStart(long start) {
			this.start = start;
		}

		public long getEnd() {
			return end;
		}

		public void setEnd(long end) {
			this.end = end;
		}

		public String getArea() {
			return area;
		}

		public void setArea(String area) {
			this.area = area;
		}

		public Ipdata(String str) {
			super();
			parse(str);
		}

		@Override
		public String toString() {
			return start + ", " + end + ", " + area;
		}
		

		private void parse(String str){
			String[] tmp = str.split(",");
			if (3 == tmp.length){
				start = Long.parseLong(tmp[0]);
				end = Long.parseLong(tmp[1]);
				area = tmp[2];
			}
		}
	}
	
	private final List<String> iplist = new ArrayList<String>();
	private Ipdata lastipdata; 
	long sum;
	
	public void read(String str) {
		sum++;
		Ipdata ipdata = new Ipdata(str);
		if (lastipdata != null ){
			if(ipdata.area != null && ipdata.area.equals(lastipdata.area)){
				if (1 == (ipdata.start - lastipdata.end)) {
					lastipdata.setEnd(ipdata.end); 
				}
			}
			else{
				iplist.add(lastipdata.toString());
				lastipdata = null;
			}
		}
		else
			lastipdata = ipdata;
	}

	private void run(){
		    String dir = System.getProperty("user.dir");
			String path = dir + "/resources/iptables.txt";
			String outpathpath = dir + "/resources/iptablesnew.txt";
			String path1 = "src/main/java/com.chexun.project.IpMerge/resources/iptables.txt";
			Fileinfo fileinfo = new Fileinfo(this);
			fileinfo.Read(path);
			fileinfo.Write(outpathpath, false, iplist);	
			fileinfo =null;
			System.gc();
	}

	public static void main(String[] args) {
		IpMerge ipmerge = new IpMerge();
		ipmerge.run();
	}
}

　　

　　

public interface FileReadCallback {  
    void read(String Str);      
}