[toc]

合并的工具类

package cn.qina.file;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.SequenceInputStream;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.TreeSet;

public class CombinationUtil {
    /*输入要被合并的文件所在的路径
     * 
     * 
     */
    public static void combination(String stapath,String endpath) throws IOException {
        File stafile=new File(stapath);
        if ((!stafile.exists())||(!stafile.isDirectory())) {
            System.out.println("请正确的输入路径");
        }
        //排序文件,按照名字
        TreeSet set=new TreeSet(new Comparator() {

            @Override
            public int compare(File o1, File o2) {
                
                
                    
                return o1.getPath().compareTo(o2.getPath());
            }
        });
        File[] files=stafile.listFiles();//获取开始目录下的所有文件
        ArrayList inpList=new ArrayList();
        ArrayList fileList=new ArrayList();
        for (int i = 0; i < files.length; i++) {
            if (!files[i].isDirectory()) {//过滤掉文件夹
                set.add(files[i]);
                
            }
            
        }
        fileList.addAll(set);//传入文件列表
        for (int i = 0; i < fileList.size(); i++) {
            inpList.add(new FileInputStream(fileList.get(i)));//转换为输入流
            
        }    
        SequenceInputStream s=new SequenceInputStream(Collections.enumeration(inpList));
        byte[] b=new byte[1024*1024*10];
        int len=0;
        FileOutputStream outputStream=new FileOutputStream(endpath);
        
        while ((len=s.read(b))!=-1) {
            outputStream.write(b, 0, len);
        }
        outputStream.close();
        s.close();
        
    }
    
    
    
    

}

test类

package cn.qina.file;

import java.io.File;
import java.io.IOException;

public class Sqlittext {
    public static void main(String[] args) {
        String endpath="G:"+File.separator+"sqlit";//输出路径
        String stapath="G:"+File.separator+"sqlit";//输入路径

        try {
            CombinationUtil.combination(stapath, endpath);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

}

文件夹截图

问题描述

java.io.FileNotFoundException: G:\sqlit (拒绝访问。)

at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.(FileOutputStream.java:194)
at java.io.FileOutputStream.(FileOutputStream.java:84)
at cn.qina.file.CombinationUtil.combination(CombinationUtil.java:54)
at cn.qina.file.Sqlittext.main(Sqlittext.java:12)

__