多行到单行

Question

FileReader f0 = new FileReader("1.html");
StringBuilder sb = new StringBuilder();
BufferedReader br = new BufferedReader(f0);
while((temp1=br.readLine())!=null)
{
sb.append(temp1);
}
String para = sb.toString().replaceAll("<br>","\n");
String textonly = Jsoup.parse(para).text();
System.out.println(textonly);

FileWriter f1=new FileWriter("1.txt");
char buf1[] = new char[textonly.length()];
textonly.getChars(0,textonly.length(),buf1,0);

for(i=0;i<buf1.length;i++)
 {
 if(buf1[i]=='\n')
  f1.write("\r\n");
 f1.write(buf1[i]);

While making the new text file this code makes multiple line and I want that the text file should have only one line. How can I do this.

Answer 1

停止在文件中写入换行符\\ n，你应该停止制作多行。

Answer 2

Isn't <\\br> and \\n same kind of thing? if you do this ,there will be no change in your text. You need to replace <\\br> with an space.

String para = sb.toString().replaceAll("<br>"," ");

Answer 3

even after removing all \\n it is making multiple lines.

I think the error is in the following code:

for( i = 0; i < buf1.length; i++ )
{
     if( buf1[ i ] == '\n' )
         f1.write( "\r\n" );
     f1.write( buf1[ i ] );

When a new line character \\n is matched, you are writing \\r\\n to the file and again wring the same character to the file using f1.write( buf1[ i ] ) . Using else will stop writing \\n again to the file.

for( i = 0; i < buf1.length; i++ )
{
     if( buf1[ i ] == '\n' )
     {
         f1.write( "\r\n" );
     }
     else
     {
         f1.write( buf1[ i ] );
     }
     // ...
} // for

Alternatively use ternary operator to replace \\n with \\r\\n while writing.

f1.write( buf1[ i ] == '\n' ? "\r\n" : buf1[ i ] );