工资单项目示例，一旦我上传并在eclipse上构建它就会显示此错误。为什么我不能读取txt文件？
我应该阅读的Employee.txt文件
001
Employee A
Level 1
380
002
Employee B
Level 2
450
003
Employee C
Level 3
550
我收到的错误无法读取txt文件。
Exception in thread "main" java.io.FileNotFoundException: Employee.txt (No such file or directory)
at java.base/java.io.FileInputStream.open0(Native Method)
at java.base/java.io.FileInputStream.open(FileInputStream.java:196)
at java.base/java.io.FileInputStream.<init>(FileInputStream.java:139)
at java.base/java.io.FileInputStream.<init>(FileInputStream.java:94)
at MainPackage.payroll.main(payroll.java:12)
java代码
package MainPackage;
import java.io.*;
public class payroll {
public static void main(String args[]) throws IOException {
boolean notExists = true;
while (notExists == true) {
// objects
FileInputStream fstream = new FileInputStream("Employee.txt");
DataInputStream in = new DataInputStream(fstream);
BufferedReader textReader = new BufferedReader(new InputStreamReader(in));
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
// Declarations
String str = "", UserInput = "", tmp = "";
String empcode = "", empname = "", emplevel = "";
double emprate = 0;
int ctr = 0;
String timeIn = "", timeOut = "", holiday = "", overtin = "", overtout = "";
double totalHours = 0, hours = 0, minutes = 0, tmpTime = 0, late = 0, undertime = 0, overHours = 0,
overMinutes = 0;
double salary = 0, overSal = 0, tmpSal = 0, regular = 0;
double tmpLate = 0, tmpHour = 0, tmpUndertime = 0;
System.out.print("Enter Employee Code : ");
UserInput = br.readLine();
// loop through the text file
while ((str = textReader.readLine()) != null) {
if (str.equalsIgnoreCase(UserInput)) {
empcode = UserInput;
// found the userinput, store the details now
while ((tmp = textReader.readLine()) != null) {
// lets put everyline into a variable for reference use
switch (ctr) {
case 0:
empname = tmp;
break;
case 1:
emplevel = tmp;
break;
case 2:
emprate = Double.parseDouble(tmp);
break;
}
ctr++;
}
}
// System.out.println(str);
}
System.out.println();
System.out.println();
// check if record exists
if (!(empcode.equalsIgnoreCase(""))) {
// display the record if it exists
System.out.println("-------------------1 Details---------------------------");
System.out.println("Name of the Employee : " + empname);
System.out.println("Employee Code : " + empcode);
System.out.println("Employee Level : " + emplevel);
System.out.println("Employee Rate : " + emprate);
// enter for time in and time out
String CurrentDay = "";
int ctr2 = 1;
while (ctr2 <= 5) {
switch (ctr2) {
case 1:
CurrentDay = "Monday";
break;
case 2:
CurrentDay = "Tuesday";
break;
case 3:
CurrentDay = "Wednesday";
break;
case 4:
CurrentDay = "Thursday";
break;
case 5:
CurrentDay = "Friday";
break;
}
System.out.println();
System.out.println();
// ask for time in and time out for regular and overtime
// also ask if today is holiday
System.out.print("Enter Time In for " + CurrentDay + " : ");
timeIn = br.readLine();
System.out.print("Enter Time Out for " + CurrentDay + " : ");
timeOut = br.readLine();
System.out.print("Is today holiday? [y/n] : ");
holiday = br.readLine();
System.out.print("Enter Time In for Over Time : ");
overtin = br.readLine();
System.out.print("Enter Time Out for Over Time : ");
overtout = br.readLine();
// split the hour and minute
String tin[] = timeIn.split(":");
String tout[] = timeOut.split(":");
// time calculation
hours += (Double.parseDouble(tout[0]) - Double.parseDouble(tin[0])) >= 9 ? 8
: Double.parseDouble(tout[0]) - Double.parseDouble(tin[0]);
tmpTime = Double.parseDouble(tout[0]) - Double.parseDouble(tin[0]);
tmpHour = (Double.parseDouble(tout[0]) - Double.parseDouble(tin[0])) >= 9 ? 8
: Double.parseDouble(tout[0]) - Double.parseDouble(tin[0]);
// minute late and under time calculation
if (tmpTime <= 9) {
late += Double.parseDouble(tin[1]);
tmpLate = Double.parseDouble(tin[1]);
}
if (Double.parseDouble(tout[0]) < 17) {
undertime += 60 - Double.parseDouble(tout[1]);
tmpUndertime = 60 - Double.parseDouble(tout[1]);
}
// salary rate calculation
if (holiday.equalsIgnoreCase("y")) {
tmpSal = (emprate / 8) * 1.1;
tmpTime = (((tmpHour * 60) - (tmpLate + tmpUndertime)) / 60);
hours -= tmpTime;
overHours += (((tmpHour * 60) - (tmpLate + tmpUndertime)) / 60);
overSal += tmpSal * tmpTime;
} else {
tmpSal = emprate / 8;
tmpTime = (((tmpHour * 60) - (tmpLate + tmpUndertime)) / 60);
salary += tmpSal * tmpTime;
// System.out.println(salary + " = " + tmpSal * tmpHour + " " + tmpLate + " " +
// tmpUndertime + " ");
}
// if there is overtime
if (!(overtin.equalsIgnoreCase("00:00") || overtin.equalsIgnoreCase(""))) {
String ovin[] = overtin.split(":");
String ovout[] = overtout.split(":");
double tmp1 = 0;
double tmp2 = 0;
double minTmp = 0;
tmp1 = Double.parseDouble(ovin[0]) <= 17 ? 17 : Double.parseDouble(ovin[0]);
tmp2 = Double.parseDouble(ovout[0]) <= 20 ? 20 : 20;
minTmp = Double.parseDouble(ovin[1]) + Double.parseDouble(ovout[1]);
if ((tmp2 - tmp1) <= 3 && tmp2 - tmp1 > 0) {
overMinutes = ((tmp2 - tmp1) * 60) - minTmp;
overHours += overMinutes / 60;
double overTmp = overMinutes / 60;
double overRate = (emprate / 8) * 1.1;
overSal += overRate * overTmp;
}
}
ctr2++;
}
System.out.print("Enter Date Covered : ");
String covered = br.readLine();
minutes += (hours * 60) - (late + undertime);
totalHours = minutes / 60;
System.out.println();
System.out.println();
System.out.println("-------------------------------------------");
System.out.println("Name of the Employee : " + empname);
System.out.println("Employee Code : " + empcode);
System.out.println("Employee Level : " + emplevel);
System.out.println("Employee Rate : " + emprate);
System.out.println("-------------------------------------------");
System.out.println("Date Covered : " + covered);
System.out.println("Total Hours : " + totalHours);
System.out.println("Overtime : " + overHours);
System.out.println("Regular Income : " + salary);
System.out.println("Overtime Income : " + overSal);
System.out.println("Gross Income : " + (salary + overSal));
System.out.println("Deductions");
// tax and gsis deduction computation
double tax = ((salary + overSal) * .10);
double gsis = 0;
if (emplevel.equalsIgnoreCase("Level 1")) {
gsis = (salary + overSal) * .01;
} else if (emplevel.equalsIgnoreCase("Level 2")) {
gsis = (salary + overSal) * .015;
} else {
gsis = (salary + overSal) * 0.02;
}
System.out.println(" * Tax : " + tax);
System.out.println(" * GSIS : " + gsis);
System.out.println("Net Income : " + (((salary + overSal) - (tax + gsis)) + 500));
System.out.println("-------------------------------------------");
notExists = false;
} else {
System.out.println("-------------------Record Doesn't Exists---------------------------");
notExists = true;
}
}
}
}
答案 0 :(得分：0)
我建议您将Employee.txt移动到资源文件夹（src / main / resources），然后使用
File myFile = new File("c:\\full\\path\\Employee.txt")
FileInputStream fstream = new FileInputStream("myFile");
如果您无法移动文件，或者您真的需要它可以在任何地方使用：
// But are u denied access?
// well here is the solution.
public static void TheKing_DownloadFileFromURL(String search, String path) throws IOException {
// This will get input data from the server
InputStream inputStream = null;
// This will read the data from the server;
OutputStream outputStream = null;
try {
// This will open a socket from client to server
URL url = new URL(search);
// This user agent is for if the server wants real humans to visit
String USER_AGENT = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36";
// This socket type will allow to set user_agent
URLConnection con = url.openConnection();
// Setting the user agent
con.setRequestProperty("User-Agent", USER_AGENT);
//Getting content Length
int contentLength = con.getContentLength();
System.out.println("File contentLength = " + contentLength + " bytes");
// Requesting input data from server
inputStream = con.getInputStream();
// Open local file writer
outputStream = new FileOutputStream(path);
// Limiting byte written to file per loop
byte[] buffer = new byte[2048];
// Increments file size
int length;
int downloaded = 0;
// Looping until server finishes
while ((length = inputStream.read(buffer)) != -1)
{
// Writing data
outputStream.write(buffer, 0, length);
downloaded+=length;
//System.out.println("Downlad Status: " + (downloaded * 100) / (contentLength * 1.0) + "%");
}
} catch (Exception ex) {
//Logger.getLogger(WebCrawler.class.getName()).log(Level.SEVERE, null, ex);
}
// closing used resources
// The computer will not be able to use the image
// This is a must
outputStream.close();
inputStream.close();
}