Java 读取文本文件并跳过空行直到达到 EOF
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Reading text file and skipping blank lines until EOF is reached
提问by Ofek
I am trying to read csv file full of text; however if there is a blank line in the middle somewhere, the whole thing breaks and I get a:
我正在尝试读取充满文本的 csv 文件；但是，如果中间某处有一个空行，整个事情就会中断，我得到一个：
java.lang.RuntimeException: java.lang.StringIndexOutOfBoundsException
How would I go about removing/ignoring blank lines as long as it's not the end of the file?
只要不是文件末尾，我将如何删除/忽略空行？
file = new FileReader(fileName);
@SuppressWarnings("resource")
BufferedReader reader = new BufferedReader(file);
while ((line = reader.readLine()) != null) {
//do lots of stuff to sort the data into lists etc
}
} catch (Exception e) {
System.out.println("INPUT DATA WAS NOT FOUND, PLEASE PLACE FILE HERE: " + System.getProperty("user.dir"));
throw new RuntimeException(e);
} finally {
if (file != null) {
try {
file.close();
} catch (IOException e) {
// Ignore issues during closing
}
}
}
采纳答案by lreeder
It's this part that's causing problems:
正是这部分导致了问题：
while ((line = reader.readLine()) != null) {
//do lots of stuff to sort the data into lists etc
// **** Something assumes line is not empty *******
}
To ignore blank lines, add this check to make sure the line has something:
要忽略空行，请添加此检查以确保该行包含某些内容：
while ((line = reader.readLine()) != null) {
if(line.length() > 0) {
//do lots of stuff to sort the data into lists etc
}
}
