Question

我发现过与地雷类似的问题,但并非完全一样。

你们看到,我试图做的是,通过一系列的XML档案在名录中搜寻,并告诉我Xml档案中包含着某种星体。

例如:一搜寻“性别与知识”,该方案将告诉我“4.xml”,因为XML档案中有书面“性别与知识”,即找到了查明所有XML档案的途径,但现在需要一些能够通过这些XML档案检索并授予载有我方言的XML档案标题的法典。

定义准则一如上:

String path = "C:/Users/Daniel/Desktop/CD";
File folder = new File(path);
File[] listOfFiles = folder.listFiles();
System.out.println(listOfFiles.length);

Answer 1

Raw File IO

这种方法没有考虑到任何XML标记或任何东西。它只是对档案中所含的某种扼杀进行检查。

你们必须采取的基本步骤是使用光线文件:

Loop through the files in listOfFiles
Open each file (see FileReader and BufferedReader)
Read the content (e.g. line by line with readLine)
Check if your string is in the read content
If yes, output the file s name and continue with next file

或以最低代码表示:

// In looping through files:
// Step 2:
BufferedReader r = new BufferedReader(new FileReader(f)); 
// Step 3:
String s = r.readLine();
while (s != null) {
    // Step 4:
    if (s.contains("TestString")) {
        // Step 5:
        System.out.println(f.getAbsolutePath());
        break;
    }
    s = r.readLine();
}
r.close();

请注意,如果你扼杀有线性的话,这就赢得了工作。

SAX2

SAX是一种面向上游的XML教区标准,其行文为XML,如果某一要素开始、案文找到等,则向手提退。您可以利用这一方法核对《国际禁止杀伤人员地雷公约》的案文内容,并且还执行一部国家文书,如果文本确实在<代码>和“t”中碰到,则跟踪该文本;要素,但这是一个比较复杂的问题。

This is what to do using a SAX2 implementation:

Implement the ContentHandler SAX interface in your class
In that content handler, implement the characters method to check for your string
Create a reader with XMLReaderFactory.createXMLReader()
Set your content handler with setContentHandler on the reader
Call parse on the reader with an InputSource for your file

DOM

DOM is a standard XML model that builds a tree of the nodes in memory that can be traversed. This method is really simple to use:

Parse the XML into a DOM using DocumentBuilder
Get all <string> elements using getElementsByTagName
Check if their values equal your test string using getNodeValue

Code:

Document d = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(f);
NodeList l = d.getElementsByTagName("string");
for (int i = 0; i < l.getLength(); ++i) {
    if ("TestString".equals(l.item(i).getNodeValue())) {
        System.out.println(f.getAbsolutePath());
        break;
    }
}

希望这一帮助。

Raw File IO

SAX2

DOM

友情链接