java - 如何在文本文件中搜索字符串备份 = True

Question

前后有一个空格 = ...

( Backup = True )------ 是要搜索的字符串(= 之间有空格)

File file = new File(
                "D:\\Users\\kbaswa\\Desktop\\New folder\\MAINTENANCE-20150708.log.txt");

        Scanner scanner = null;
        try {
            scanner = new Scanner(file);
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        // now read the file line by line...
        int lineNum = 0;
        while (scanner.hasNextLine()) {
            String line = scanner.next();
            lineNum++;
            String name="Backup = True";
            if (line.contains(name)) {
                System.out.println("I found "+name+ " in file " +file.getName());
                   break;
            }
            else{
                System.out.println("I didnt found it");
            }

        }

    }

Answer 1

Scanner.next() 返回下一个完整标记，因此它将返回类似 Backup 的内容，然后下次返回 =循环，然后下次true。

使用Scanner.nextLine()一次性获取整行。