我需要将StackExchange的数据集转换为Json文件,因此我尝试了以下方法-
public class Parser {
public static int PRETTY_FACTOR=4;
public static void main(String[] args) throws Exception {
String fileName = "/home/dipannoy/Desktop/stackexchange/android/posthistory.json";
String path= "/home/dipannoy/Desktop/stackexchange/android/PostHistory.xml";
try {
StringBuilder builder = new StringBuilder();
FileInputStream inputStream = null;
Scanner sc = null;
try {
inputStream = new FileInputStream(path);
sc = new Scanner(inputStream, "UTF-8");
while (sc.hasNextLine()) {
String line = sc.nextLine();
builder.append(line);
}
if (sc.ioException() != null) {
throw sc.ioException();
}
} finally {
if (inputStream != null) {
inputStream.close();
}
if (sc != null) {
sc.close();
}
}
String xml = builder.toString();
JSONObject jsonObj = XML.toJSONObject(xml);
FileWriter fileWriter = new FileWriter(fileName);
BufferedWriter bufferedWriter =new BufferedWriter(fileWriter);
bufferedWriter.write(jsonObj.toString());
bufferedWriter.flush();
bufferedWriter.close();
fileWriter.close();
}
catch(IOException ex) {
System.out.println(
"Error writing to file '"
+ fileName + "'");
} catch(Exception e) {
e.printStackTrace();
}
}
}
但是在 jsonObj.toString()
处出现了错误。一个示例 xml 如下:
<comments>
<row Id="1" PostId="1" Score="4" Text="Did I just place the first upvote? Congrats on getting this site off the ground!" CreationDate="2016-01-12T18:47:12.573" UserId="23"/>
</comments>
我已经尝试使用Gson,但无法将GSONObject
转换为GsonObject
,因为GsonParser
需要GSONObject
的toString()
方法,而该方法导致了OutOfMemoryError
。有人能帮忙解决这个问题吗?
OutOfMemoryError
吗?除了为您编写代码外,我不确定任何人能做些什么来帮助您。请查找 StAX 解析器。 - Abhijit Sarkar