林解析txt文件,并执行一些编辑任务。林而改变多行字符串转换成一个线串卡住。
工作流:1)加入多线成一个第2行)中提取其中包含一些炭或startsWith特定行
已经尝试了一些方法,但没有预期的效果。
我们的目标是有这样一行:
Jrn.Directive "WindowSize" , "[A.rvt]", "Floor Plan: Level 1" , 1912, 849
基于
Jrn.Directive "WindowSize" _
, "[A.rvt]", "Floor Plan: Level 1" _
, 1912, 849
尝试:
line.lines().collect(Collectors.joining("_"+"[\n]"));
要么
line.replaceAll(" _\n" +
" ,");
感谢您的任何意见更新:
工作流程:
请看截图https://i.ibb.co/0cRrwcR/2019-02-03-1947.png
我认为这是首先需要确定哪些线路需要连接之后,我可以提取其中包含例如像有趣的信息,这些线路与Jrn.D开始。
代码我使用的是找到特定字符串什么
import java.io.*;
import java.util.stream.Collectors;
public class ReadFromFile {
public static void main(String [] args) {
// The name of the file to open.
String fileName = "test.txt";
// This will reference one line at a time
String line = null;
try {
// FileReader reads text files in the default encoding.
FileReader fileReader =
new FileReader(fileName);
// Always wrap FileReader in BufferedReader.
BufferedReader bufferedReader =
new BufferedReader(fileReader);
while((line = bufferedReader.readLine()) != null) {
// Im defining which lines are important for me but firstly I
//need have them in one line especially when looking for Jrn
if (line.startsWith("Jrn")||
line.contains("started recording journal file")||
line.contains("' Build:")|| line.contains("Dim Jrn"))
System.out.println(line);
}
// Always close files.
bufferedReader.close();
}
catch(FileNotFoundException ex) {
System.out.println(
"Unable to open file '" +
fileName + "'");
}
catch(IOException ex) {
System.out.println(
"Error reading file '"
+ fileName + "'");
// Or we could just do this:
// ex.printStackTrace();
}
}
}
最好的(侵入性最小的文件)的方式我能想到去了解你的具体问题是在的Jrn.Directive
元信息的末尾添加一个分隔符(*)如果该可能性,e.g领域内是:
Jrn.Directive "WindowSize" _ , "[A.rvt]", "Floor Plan: Level 1" _ , 1912, 849*
然后,您可以使用一个循环来连续打印每个令牌不匹配的分隔符,并打破循环当它。
像这样的事情
//File object instantiation
File file = new File("test.txt");
//Iterator which loops over every line in the file
Iterator<String> iterator = Files.readAllLines(file.toPath()).iterator();
//The end delimiter for you Jrn.Directive information
String delimiter = "*";
while(iterator.hasNext()) {
//String to store current line
String line = iterator.next();
//Execute if line starts with Jrn.Directive
if (line.startsWith("Jrn")) {
//JrnLoop to serialize Jrn.Directive information
JrnLoop: while(true) {
//Splitting and processing each character in the current line
for(String token: line.split("")) {
//Escape and break the JrnLoop if the current character matches end delimiter
if (token.matches(delimiter)) {
System.out.println();
break JrnLoop;
}
//Otherwise print the current character
System.out.print(token);
}
//Go to the next line of the Jrn.Directive information
line = iterator.next();
}
}
//If the line does not start with Jrn.Directive
else {
System.out.println(line);
}
至于为什么你Jrn.Directive信息存储在文件中的多条线路,我真的不知道