java BufferedWriter停止写入
我正试图重写这本词典:dictionary.txt按长度排序,而不是按字母顺序排序。我有以下代码(在main(String[]args)中):
BufferedReader read = new BufferedReader(new FileReader(new File(DIC_READ_PATH)));
BufferedWriter write= new BufferedWriter(new FileWriter(DIC_WRITE_PATH),1);
ArrayList<String> toWrite = new ArrayList<String>();
for (int a = read.read(); a != -1; a = read.read()){
char c = (char) a;
toWrite.add("" + c + read.readLine());
}
read.close();
Collections.sort(toWrite, new MyComparator());
for (int a = 0; a <= 70000; a += 10000){
write.write(toWrite.subList(a, a + 10000).toString().replaceAll("[\\[,\\]]", "").replaceAll(" ", "\n"));
write.flush();
}
write.write(toWrite.subList(80000, toWrite.size()).toString().replaceAll("[\\[,\\]]", "").replaceAll(" ", "\n"));
write.close();
MyComparator:
public class MyComparator implements Comparator<String> {
@Override
public int compare(String arg0, String arg1) {
// TODO Auto-generated method stub
if (arg0.length() == arg1.length()){
return arg0.compareTo(arg1);
}
return arg0.length() < arg1.length() ? -1 : +1;
}
}
它对Arraylist进行了很好的排序,但是当我写字符串时,它不会写8个单词。我尝试在BufferedWriter上更改缓冲区,发现较小的缓冲区会有所帮助,所以我将缓冲区设置为1。我发现:Buffered Writer Java Limit / Issues并在每次写入和结束时尝试刷新(甚至在之后改变缓冲区)。我仍然得到80360字而不是80368字。为什么它不写出完整的单词列表?我必须使用另一个BufferedWriter吗?如果是这样,我如何使用它而不覆盖已经写入的内容
# 1 楼答案
您正在使用输入数据的随机字符:
不要混合使用
read()
和readLine()
调用。只需使用readLine()
并测试null另外,在写结果时,不要使用列表。对于字符串impl和讨厌的regex替换,只需在列表上循环并写一个单词,然后换行即可
# 2 楼答案
我认为问题在于:
你应该写信。写入(“\n”);冲水前