用java写一段程序，读取本地txt文件中用逗号隔开的数字，这几段数字放在数组中。 百度上提问：Java上怎样读取txt文件里的数据为一个多行两...
java\u600e\u6837\u4ecetxt\u6587\u4ef6\u4e2d\u6709\u9009\u62e9\u7684\u8bfb\u53d6\u6570\u636e\u5b58\u5165\u6570\u7ec4\uff0c\u4e14\u6bcf\u4e2a\u6570\u636e\u9879\uff08\u6709\u6c49\u5b57\u6216\u6570\u5b57\uff09\u4e4b\u95f4\u7528\u9017\u53f7\u9694\u5f00\uff1f//\u5199\u4e86\u4e00\u4f1a\u513f\u5462\u3002\u3002\u7ed9\u70b9\u8f9b\u82e6\u5206\u5427
package com.secondDay;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Random;
public class Test1 {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
new Test1().getFile("D:\\haha.txt","D:\\WUWUWU.txt");
}
public void getFile(String path,String path1){
File file = new File(path);
FileInputStream fis = null;
String readStr;
String[] str = null;
StringBuffer sb = new StringBuffer();
StringBuffer sb1 = new StringBuffer();
if(file.exists()){
try {
FileReader fr = new FileReader(file);
BufferedReader br = new BufferedReader(fr);
while((readStr=br.readLine())!=null){
sb.append(readStr+"\n");
}
System.out.println(sb.toString());
str = sb.toString().split("\n");
if(null==str){
throw new Exception("\u83b7\u53d6\u5f02\u5e38\uff01");
}
for(int i=0;i<str.length;i++){
String[] chgStr = str[i].split(",");
sb1.append(chgStr[0]+"Z\n");
}
System.out.println(sb1.toString());
this.write(sb1.toString(), path1);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}else{
try {
throw new Exception("\u6587\u4ef6\u4e0d\u5b58\u5728\uff01");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
public void write(String text,String path){
FileOutputStream fos = null;
if(!"".equals(text.trim())){
try {
fos = new FileOutputStream(path);
fos.write(text.getBytes());
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
public voidinit(String filename) throws FileNotFoundException, IOException{
//\u8bfb\u53d6\u6570\u636e
double[] x;
double[] y;
int num;
String strbuff;
BufferedReader tspdata = newBufferedReader(new InputStreamReader(new FileInputStream(filename)));
strbuff = tspdata.readLine();
int num = Integer.valueOf(strbuff);
// System.out.println(Integer.valueOf(strbuff));
x = new double[num];
y = new double[num];
for (int citys = 0; citys <num; citys++) {
strbuff = tspdata.readLine();
String[] strcol =strbuff.split(",");
x[citys] = Integer.valueOf(strcol[1]);
y[citys] =Integer.valueOf(strcol[2]);
}
}
主要可以通过字符串的分割方法，如下：
BufferedReader readTxt=new BufferedReader(new FileReader(new File("text.txt")));
String textLine="";
String str="";
while(( textLine=readTxt.readLine())!=null){
str+=" "+ textLine;
}
String[] numbersArray=str.split("，");//这个逗号还可以是其他的字符
//numbersArray下保存的即为各个数字
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