求java高手，java读取txt中内容，按内容拆分成多个txt，如下图，拆分成两个txt文件 Java拆分txt文件的写法
java\u8bfb\u53d6txt\u4e2d\u5185\u5bb9\uff0c\u6309\u5185\u5bb9\u62c6\u5206\u6210\u591a\u4e2atxt\uff0c\u5982\u4e0b\u56fe\uff0c\u62c6\u5206\u6210\u4e24\u4e2atxt\u6587\u4ef6\u662f\u6309\u6bcf\u884c\u7684\u6570\u636e\u4e2a\u6570\u5206\uff1f\u4f60\u5c31\u6309\u7a7a\u683csplit\u4e00\u4e0b\uff0c\u5224\u65ad\u6570\u7ec4\u957f\u5ea6\uff0c\u653e\u5230\u6587\u4ef6\u91cc\u5457
\u4ee5\u4e0b\u4e00\u4e2a\u62c6\u5206txt\u7684Util\u7c7b
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;public class FileCutter { /** * *sourceFile:\u6e90\u6587\u4ef6\u7684\u8def\u5f84 *targetDirectory:\u4fdd\u5b58\u6587\u4ef6\u7684\u76ee\u5f55(\u4f8b:'C:\\') *prefix:\u662f\u5206\u5272\u540e\u6587\u4ef6\u7684\u524d\u7f00(\u4f8b:'2015-09-09') *size:\u662f\u5206\u9694\u540e\u5355\u4e00\u6587\u4ef6\u7684\u5927\u5c0f\u5355\u4f4d\u662f2kb\u7684\u500d\u6570,size\u4f2010\uff0c\u5206\u5272\u540e\u5355\u4e00\u6587\u4ef6\u5c31\u662f20K\u3002\u4f20100\uff0c\u6587\u4ef6\u5c31\u662f2M\u4e00\u4e2a\u3002 * **/ public static void cutToMoreFile(String sourceFile, String targetDirectory, String prefix, int size) { //\u52a0\u8f7d\u6e90\u6587\u4ef6 File source = new File(sourceFile); InputStream in = null; OutputStream out = null; int len = 0; int fileIndex = 1; //\u8bbe\u7f6e\u4e00\u6b21\u52a0\u8f7d\u7684\u5927\u5c0f byte[] buffer = new byte[2048]; try { //\u628a\u6e90\u6587\u4ef6\u8bfb\u5230InputStream\u4e2d in = new FileInputStream(source); //\u5faa\u73af while(true) { //\u5206\u5272\u540e\u7684\u6587\u4ef6\u6d41 out = new FileOutputStream(targetDirectory + File.separator + prefix + fileIndex++ + ".txt"); for(int i = 0; i < size; i++) { //\u5982\u679c\u6587\u4ef6\u8bfb\u53d6\u5b8c\u5c31\u9000\u56de\u65b9\u6cd5\u3002 if((len = in.read(buffer)) != -1) { //\u5199\u5165\u5206\u5272\u540e\u7684\u6587\u4ef6 out.write(buffer, 0, len); }else { //\u6267\u884cfinally\u5185\u5bb9\u540e,\u9000\u51fa\u65b9\u6cd5 return; } } } } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }finally { try { //\u5173\u7cfb\u6d41 in.close(); out.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }}\u4ee5\u4e0a\uff0c\u8be6\u7ec6\u8bf7\u770b\u6ce8\u91ca
没有定拆分规则 以下代码是前5个行为一个txt 其余的为另外一个txt
package com.kidd.baiduzhidao;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;
public class baiduzhidao {
public static void main(String[] args) {
File file = new File("D:"+File.separator+"t1.txt");
String[] ss = readTxt(file);
if(ss==null || ss.length==0){
System.out.println("读取txt内容发生错误,txt内容可能为空.");
return ;
}
file = new File("D:"+File.separator+"1.txt");
if(!writeTxt(file, ss ,0, 5)){
System.out.println("写入第一个txt发生了错误.终止");
return ;
}
file = new File("D:"+File.separator+"2.txt");
if(!writeTxt(file, ss ,5)){
System.out.println("写入第二个txt发生了错误.终止");
return ;
}
}
/**
* 写出数组内容从start开始的所有内容到txt文件
* @param file 待写出的txt文件的File形式
* @param ss 数组对象
* @param start 开始位置
* @return 成功返回true 发生错误返回false
*/
private static boolean writeTxt(File file, String[] ss, int start) {
return writeTxt(file,ss,start,ss.length-start);
}
/**
* 写出数组内容从start位置开始共写出length个 到txt文件
* @param file 待写出的txt文件的File形式
* @param ss 数组对象
* @param start 开始位置
* @param length 写出长度
* @return 成功返回true 发生错误返回false
*/
private static boolean writeTxt(File file, String[] ss,int start, int length) {
FileWriter fWriter;
try {
fWriter = new FileWriter(file, false);
} catch (IOException e) {
e.printStackTrace();
return false ;
}
try {
for(int i = start , k = ss.length ; i < k && i < start+length ; i++){
fWriter.write(ss[i]+"
");
}
} catch (IOException e) {
e.printStackTrace();
if(!closeFileWriter(fWriter)){
fWriter = null ;
}
return false ;
}
if(!closeFileWriter(fWriter)){
fWriter = null ;
}
return true ;
}
/**
* 关闭文件流
* @param fWriter
* @return 成功关闭返回true,发生错误返回false
*/
private static boolean closeFileWriter(FileWriter fWriter) {
if(fWriter==null){
return false;
}
try {
fWriter.close();
} catch (IOException e) {
e.printStackTrace();
}
return true ;
}
/**
* 读取txt文件内容，返回该文本内容的String[]形式
* @param file txt文件的File形式
* @return 该文本内容的String[]形式 若读取发生错误 则返回null
*/
private static String[] readTxt(File file) {
Scanner scanner;
try {
scanner = new Scanner(file);
} catch (FileNotFoundException e) {
e.printStackTrace();
return null;
}
String string = "";
/**
* 读取到的每一行用,分割
*/
while (scanner.hasNext()) {
string += scanner.nextLine() + ",";
}
scanner.close();
return string.split(",");
}
}
java对文件进行逐行读取， 判断每一行的开头是不是J01 读入两个J01后马上向新文件中写数据就行了。
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绛旓細IdNameYearCurrentCumulative 16,Melissa Will,3,5,9 17,Naomi Thomas,3,3,12 21,RonaldoGomes,3,1,11 22,Sam Del-Prete,2,4,10 2,Abe Storey,3,4,6 3,Anthony Tabrin,3,1,7 18,Nathan Bentley,3,2,19 浣犵敤杩欎釜鏂囦欢鍐呭,璇曚竴涓嬩笅杈圭殑绋嬪簭.import java.io.BufferedReader;import java....
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绛旓細import java.awt.*;import java.awt.event.*;import java.io.*;public class MyTest_35 extends WindowAdapter implements ActionListener,TextListener { Frame f;TextArea ta1; //澶氳鏂囨湰鍖 Panel p1;TextField tf1; //鏂囨湰妗 Button b1,b2,b3;FileDialog fd; //鏂囦欢瀵硅瘽妗 File file1 =...
绛旓細public class Test<T> { private T t; public Test(T t) { this.t = t; } public T getT() { return t; } public void setT(T t) { this.t = t; }}杩欐牱
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