處理xml文件時出錯

Question

我的要求是處理xml文件以搜索字符並替換它。 我為此使用以下代碼：

public static void main(String[] args) {
        try
        {
            StringBuilder sb = new StringBuilder();
        File xmlFile = new File("C:/Users/demo.xml");
        BufferedReader br = new BufferedReader(new FileReader(xmlFile));
           String line = null;
          while((line = br.readLine())!= null){
            if(line.indexOf("&") != -1)
            {
                line = line.replaceAll("&","&");
            }
                sb.append(line);
          }
               br.close();

                BufferedWriter bw = new BufferedWriter(new FileWriter(xmlFile));

                Source xmlInput = new StreamSource(new StringReader(sb.toString()));
                StringWriter stringWriter = new StringWriter();
                StreamResult xmlOutput = new StreamResult(stringWriter);
                TransformerFactory transformerFactory = TransformerFactory.newInstance();
                transformerFactory.setAttribute("indent-number", 2);
                Transformer transformer = transformerFactory.newTransformer(); 
                transformer.setOutputProperty(OutputKeys.INDENT, "yes");
                transformer.transform(xmlInput, xmlOutput);


                bw.write(xmlOutput.getWriter().toString());
                bw.close();
                System.out.println("success");

           }

        catch (Exception e) {
            System.out.println("Error : " + e.getMessage());
        }

當我的xml文件是：

<INFO>
<NAME>Joseph</NAME>
<BUSINESSNAME>M & A</BUSINESSNAME>
<INFO>

它給出了正確的輸出，但是具有以下格式（實際xml）

<!DOCTYPE CASE SYSTEM "C:\Program Files\abc.dtd">
<INFO>
<NAME>Joseph</NAME>
<BUSINESSNAME>M & A</BUSINESSNAME>
<INFO>

我遇到錯誤：錯誤：java.io.FileNotFoundException：C：\\ Program Files \\ abc.dtd（系統找不到指定的路徑）。

有什么辦法嗎？

Answer 1

我創建了此類以從保存在內部存儲設備中的xml文件中讀取字符串，它返回一個列表，如果您希望整個擴展字符串只需要連接在一起，如果找不到該文件則返回一個空列表，這是只需閱讀XML文件並解析為字符串，您就可以使用列表替換字符串中的字母，希望對您有所幫助！

public class readXMLFile {
private String filePath = "FileStorage";
private String fileName = "File.xml";
private final String tag = "Internal Read Persistence";
File internalFileData;

public readXMLFile() {// default constructor
}

public File getXMLFile(Context context){
File directory = null;
ContextWrapper cw = new ContextWrapper(context);
directory = cw.getDir(filePath, Context.MODE_PRIVATE);
internalFileData = new File(directory, fileName);
if(internalFileData.exists()){
Log.i("ReadXMLFile","File returned");
return internalFileData;
}
else{
Log.i(tag,"the file doesn't exists!");
return null;
}
}

public List<String> readFile(Context context) {
List<String> l = new LinkedList<String>();
try {
File directory = null;
ContextWrapper cw = new ContextWrapper(context);
directory = cw.getDir(filePath, Context.MODE_PRIVATE);
internalFileData = new File(directory, fileName);

if (internalFileData.exists()) {
Log.i("Internal Data", "the root exists!!");
try {
FileInputStream fis = new FileInputStream(internalFileData);
DataInputStream in = new DataInputStream(fis);
BufferedReader br = new BufferedReader(new InputStreamReader(in));
String line;
while ((line = br.readLine()) != null) {
l.add(line);
}
try {
if (in != null) {
in.close();
}
} catch (Exception e) {
Log.i(tag, "Exception closing persistence connection");
            }
} catch (Exception e) {
Log.wtf("Fatal Exception", "Exception: " + e.getMessage());
}
} else {
Log.i(tag, "File doesn't exists");
return l;//return empty list
}
} catch (Exception e) {
Log.wtf(tag, "Exception DATA READING: " + e.getMessage());
return l;
}
Log.i(tag, "file found return");
return l;
}

}