使用java编程语言，对文件进行操作，合并多个文件，代码如下：
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import static java.lang.System.out;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.util.Arrays;
public class test {
public static final int BUFSIZE = 1024 * 8;
public static void mergeFiles(String outFile, String[] files) {
FileChannel outChannel = null;
out.println("Merge " + Arrays.toString(files) + " into " + outFile);
try {
outChannel = new FileOutputStream(outFile).getChannel();
for(String f : files){
FileChannel fc = new FileInputStream(f).getChannel();
ByteBuffer bb = ByteBuffer.allocate(BUFSIZE);
while(fc.read(bb) != -1){
bb.flip();
参考代码如下：
public static void mergeFiles(String outFile, String[] files)
第一个参数是合并后生成文件的路径
第二个参数是你需要合并的文本文件列表
代码：
package org.lq.util;
import static java.lang.System.out;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.channels.FileChannel;
import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.CharsetEncoder;
import java.util.Arrays;
public class MergeFile {
public static final int BUFSIZE = 1024 * 8;
public static void mergeFiles(String outFile, String[] files) {
FileChannel outChannel = null;
out.println("Merge " + Arrays.toString(files) + " into " + outFile);
try {
outChannel = new FileOutputStream(outFile).getChannel();
for(String f : files){
Charset charset=Charset.forName("utf-8");
CharsetDecoder chdecoder=charset.newDecoder();
CharsetEncoder chencoder=charset.newEncoder();
FileChannel fc = new FileInputStream(f).getChannel();
ByteBuffer bb = ByteBuffer.allocate(BUFSIZE);
CharBuffer charBuffer=chdecoder.decode(bb);
ByteBuffer nbuBuffer=chencoder.encode(charBuffer);
while(fc.read(nbuBuffer) != -1){
bb.flip();
nbuBuffer.flip();
outChannel.write(nbuBuffer);
bb.clear();
nbuBuffer.clear();
}
fc.close();
}
out.println("Merged!! ");
} catch (IOException ioe) {
ioe.printStackTrace();
} finally {
try {if (outChannel != null) {outChannel.close();}} catch (IOException ignore) {}
}
}
}
你 看 看 这 个 ，是不是符合你的要求
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import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
public class TestOne {
/**
* @param args
*/
public static void main(String[] args) {
String filepath1 = "F:\\1.txt";
String filepath2 = "F:\\2.txt";
ListString res1txt = null;
ListString res2txt = null;
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
//输入连续的个数
System.out.print("Input series string size:");
try {
int temp = Integer.parseInt(br.readLine());
res1txt = readFile(filepath1, temp);
res2txt = readFile(filepath2, temp);
//比较两个list中的相同值
for (int i = 0; i res1txt.size(); i++) {
for (int j = 0; j res2txt.size(); j++) {
if(res1txt.get(i).equals(res2txt.get(j))){
System.out.println(res1txt.get(i));
}
}
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if(br != null)
br.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
/**
* 读取文件，把结果以输入的连续个数分割，并保存在List中
* @param filepath
* @param size
* @return
*/
public static ListString readFile(String filepath, int size){
//如果size不合法，则返回空
if(size = 0)
return null;
ListString list = new ArrayListString();
BufferedReader br = null;
try {
//读文件
br = new BufferedReader(new InputStreamReader(new FileInputStream(filepath)));
String temp = null;
while((temp = br.readLine()) != null){
for (int i = 0; i temp.length() - size; i++) {
list.add(temp.substring(i, i+size));
}
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if(br != null)
br.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return list;
}
}
这里发不了代码，只能以文本的形式了
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
public class TestOne {
/**
* @param args
*/
public static void main(String[] args) {
String filepath1 = "F:\\1.txt";
String filepath2 = "F:\\2.txt";
ListString res1txt = null;
ListString res2txt = null;
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
//输入连续的个数
System.out.print("Input series string size:");
try {
int temp = Integer.parseInt(br.readLine());
res1txt = readFile(filepath1, temp);
res2txt = readFile(filepath2, temp);
//比较两个list中的相同值
for (int i = 0; i res1txt.size(); i++) {
for (int j = 0; j res2txt.size(); j++) {
if(res1txt.get(i).equals(res2txt.get(j))){
System.out.println(res1txt.get(i));
}
}
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if(br != null)
br.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
/**
* 读取文件，把结果以输入的连续个数分割，并保存在List中
* @param filepath
* @param size
* @return
*/
public static ListString readFile(String filepath, int size){
//如果size不合法，则返回空
if(size = 0)
return null;
ListString list = new ArrayListString();
BufferedReader br = null;
try {
//读文件
br = new BufferedReader(new InputStreamReader(new FileInputStream(filepath)));
String temp = null;
while((temp = br.readLine()) != null){
for (int i = 0; i temp.length() - size; i++) {
list.add(temp.substring(i, i+size));
}
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if(br != null)
br.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return list;
}
}
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