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[英]Method to find a word in a file and replace a new words in a file(Java)
[英]Replace a word in a file with a new file content
我正在編寫代碼,其中文件中的數據必須替換為另一個文件內容。
我知道如何使用字符串Replace()函數。 但是這里的問題是,我想用全新的Data替換字符串。
我能夠追加內容(在private static void writeDataofFootnotes(File temp, File fout)
),但是無法知道如何替換它。
下面是我的代碼。
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.Closeable;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.URL;
public class BottomContent {
public static void main(String[] args) throws Exception {
String input = "C:/Users/u0138039/Desktop/Proview/TEST/Test/src.html";
String fileName = input.substring(input.lastIndexOf("/") + 1);
URL url = new URL("file:///" + input);
BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream()));
File fout = new File("C:/Users/u0138039/Desktop/TEST/Test/OP/" + fileName);
File temp = new File("C:/Users/u0138039/Desktop/TEST/Test/OP/temp.txt");
if (!fout.exists()) {
fout.createNewFile();
}
if (!temp.exists()) {
temp.createNewFile();
}
FileOutputStream fos = new FileOutputStream(fout);
FileOutputStream tempOs = new FileOutputStream(temp);
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(fos));
BufferedWriter tempWriter = new BufferedWriter(new OutputStreamWriter(tempOs));
String inputLine;
String footContent = null;
int i = 0;
while ((inputLine = in.readLine()) != null) {
if (inputLine.contains("class=\"para\" id=\"")) {
footContent = inputLine.replaceAll(
"<p class=\"para\" id=\"(.*)_(.*)\" style=\"text-indent: (.*)%;\"><a href=\".*\">(.*)</a>(.)(.*)</p>",
"<div class=\"tr_footnote\">\n<div class=\"footnote\">\n<sup><a name=\"ftn.$2\" href=\"#f$2\" class=\"tr_ftn\">$4</a></sup>\n"
+ "<div class=\"para\">" + "$6" + "\n</div>\n</div>\n</div>");
inputLine = inputLine.replaceAll(
"<p class=\"para\" id=\"(.*)_(.*)\" style=\"text-indent: (.*)%;\"><a href=\".*\">(.*)</a>(.)(.*)</p>",
"");
tempWriter.write(footContent);
tempWriter.newLine();
}
inputLine = inputLine.replace("</body>", "<hr/></body>");
bw.write(inputLine);
bw.newLine();
}
tempWriter.close();
bw.close();
in.close();
writeDataofFootnotes(temp, fout);
}
private static void writeDataofFootnotes(File temp, File fout) throws IOException {
FileReader fr = null;
FileWriter fw = null;
try {
fr = new FileReader(temp);
fw = new FileWriter(fout, true);
int c = fr.read();
while (c != -1) {
fw.write(c);
c = fr.read();
}
} catch (IOException e) {
e.printStackTrace();
} finally {
close(fr);
close(fw);
}
}
public static void close(Closeable stream) {
try {
if (stream != null) {
stream.close();
}
} catch (IOException e) {
// ...
}
}
}
在這里,我正在搜索特定的字符串並將其保存在單獨的txt
文件中。 一旦我完成了這項工作。 我想用整個txt
文件數據替換<hr />
標記。
請讓我知道我該怎么做。
謝謝
我將修改您的處理循環,如下所示:
while ((inputLine = in.readLine()) != null) {
// Stop translation when we reach end of document.
if (inputLine.contains("</body>") {
break;
}
if (inputLine.contains("class=\"para\" id=\"")) {
// No changes in this block
}
bw.write(inputLine);
bw.newLine();
}
// Close temporary file
tempWriter.close();
// Open temporary file, and copy verbatim to output
BufferedReader temp_in = Files.newBufferedReader(temp.toPath());
String footnotes;
while ((footnotes = temp_in.readLine()) != null) {
bw.write(footnotes);
bw.newLine();
}
temp_in.close();
// Finish document
bw.write(inputLine);
bw.newLine();
while ((inputLine = in.readLine()) != null) {
bw.write(inputLine);
bw.newLine();
}
// ... and close all open files
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