使用Java StAX解析XML-计算内容标签的数量 [英] Parse XML using Java StAX - Count number of content tags
本文介绍了使用Java StAX解析XML-计算内容标签的数量的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我的XML文件很大，并且解析如下:
I have big XML file and I am parsing as below:
public class Solution {
private static final String ROOM_ID = "RoomID";
private static final String CONTENT = "Content";
private static final String LOGIN_NAME = "LoginName";
private static final String CONVERSATION_ID = "ConversationID";
private static final String FILE_DUMP = "FileDump";
private static final String MESSAGE = "Message";
private static final String CONVERSATION = "Conversation";
private static final String START_TIME = "StartTime";
static class ConversationInfo {
private String startTimeStr;
private String conversationId;
private String fileName;
private int orderInFile;
private final Set<String> users = new HashSet<>();
private final List<Message> messages = new ArrayList<>();
public HashMap<String, String> map = new HashMap<>();
@Override
public String toString() {
return String.format("%s %d %s %s %s %d %s", fileName, orderInFile, conversationId,
startTimeStr, StringUtils.join(users, "***"), users.size(),
StringUtils.join(messages, "&&&"));
}
}
static class Message {
public final String userName;
public final String content;
public Message(String name, String content) {
this.userName = name;
this.content = content;
}
@Override
public String toString() {
return userName + " " + content;
}
}
public static void main(String[] args)
throws XMLStreamException, IOException {
File folder = new File("/xml/");
List<ConversationInfo> m = new ArrayList<>();
File[] listOfFiles = folder.listFiles();
for (int i = 0; i < listOfFiles.length; i++) {
File file = listOfFiles[i];
String fileName = file.getAbsolutePath();
System.out.println("File" + file);
if (file.isFile() && file.getName().endsWith(".xml")) {
XMLInputFactory xf = XMLInputFactory.newFactory();
try (FileInputStream fin = new FileInputStream(file)) {
XMLStreamReader xr = xf.createXMLStreamReader(fin);
LOOP:
while (xr.hasNext()) {
int event = xr.next();
switch (event) {
case XMLStreamConstants.START_ELEMENT: {
String elName = xr.getLocalName();
if (CONVERSATION.equals(elName)) {
ConversationInfo convInfo = parseConversation(xr, file.getName());
if (convInfo != null) {
m.add(convInfo);
}
}
break;
}
case XMLStreamConstants.END_ELEMENT: {
String elName = xr.getLocalName();
if (FILE_DUMP.equals(elName)) {
break LOOP;
}
break;
}
case XMLStreamConstants.END_DOCUMENT:
throw new IllegalStateException("xml not well-formed: <"
+ FILE_DUMP + "> tag not closed");
}
}
}
}
}
// ConversationInfo c = new ConversationInfo();
try (FileWriter w = new FileWriter("output.txt")) {
int i = 1;
for (ConversationInfo convInfo : m) {
convInfo.orderInFile = i;
w.write(String.format("%d %s\n", i++, convInfo));
}
}
}
private static ConversationInfo parseConversation(XMLStreamReader xr, String fileName)
throws XMLStreamException {
ConversationInfo convInfo = new ConversationInfo();
convInfo.fileName = fileName;
while (xr.hasNext()) {
int event = xr.next();
switch (event) {
case XMLStreamConstants.START_ELEMENT: {
String elName = xr.getLocalName();
if (MESSAGE.equals(elName)) {
Message message = parseMessage(xr);
if (message != null) {
convInfo.messages.add(message);
convInfo.users.add(message.userName);
convInfo.map.put(message.userName, message.content);
}
} else if (START_TIME.equals(elName)) {
convInfo.startTimeStr = xr.getElementText();
} else if (ROOM_ID.equals(elName)) {
convInfo.conversationId = xr.getElementText();
}
break;
}
case XMLStreamConstants.END_ELEMENT: {
String elName = xr.getLocalName();
if (CONVERSATION.equals(elName)) {
return convInfo;
}
break;
}
case XMLStreamConstants.END_DOCUMENT:
throw new XMLStreamException("xml not well-formed: <"
+ CONVERSATION + "> tag not closed");
}
}
throw new XMLStreamException(
"unexpected end of xml file while parsing a conversation");
}
private static Message parseMessage(XMLStreamReader xr)
throws XMLStreamException {
String userName = null;
String content = null;
while (xr.hasNext()) {
int event = xr.next();
switch (event) {
case XMLStreamConstants.START_ELEMENT: {
String elName = xr.getLocalName();
if (LOGIN_NAME.equals(elName)) {
userName = xr.getElementText();
} else if (CONTENT.equals(elName)) {
content = StringUtils.trimToEmpty(xr.getElementText());
}
break;
}
case XMLStreamConstants.END_ELEMENT: {
String elName = xr.getLocalName();
if (MESSAGE.equals(elName)) {
return new Message(userName, content);
}
break;
}
case XMLStreamConstants.END_DOCUMENT:
throw new XMLStreamException("xml not well-formed: <"
+ MESSAGE + "> tag not closed");
}
}
throw new XMLStreamException(
"unexpected end of xml file while parsing a message");
}
}
而我的input.xml是:
<?xml version="1.0" encoding="UTF-8"?>
<!-- Data provided by Bloomberg LP. -->
<FileDump>
<Version>IBXML 1.3</Version>
<Conversation Perspective=" " RoomType="P">
<RoomID>PCHAT-0x3000001CA8361</RoomID>
<StartTime>03/31/2016 13:39:01</StartTime>
<StartTimeUTC>1459431541</StartTimeUTC>
<ParticipantEntered InteractionType="N" DeviceType="M">
<User>
<LoginName>SWONG00</LoginName>
<FirstName>STEPHEN</FirstName>
<LastName>WONG</LastName>
<UUID>4397109</UUID>
<FirmNumber>13133</FirmNumber>
<AccountNumber>231115</AccountNumber>
<CompanyName>DBS BANK LIMITED HON</CompanyName>
<EmailAddress>SWONG00@Bloomberg.net</EmailAddress>
<CorporateEmailAddress>STEPHENWONGWE@DBS.COM</CorporateEmailAddress>
</User>
<DateTime>03/31/2016 13:39:01</DateTime>
<DateTimeUTC>1459431541</DateTimeUTC>
<ConversationID>PCHAT-0x3000001CA8361</ConversationID>
</ParticipantEntered>
<ParticipantEntered InteractionType="N" DeviceType="M">
<User>
<LoginName>G_LO</LoginName>
<FirstName>GARY</FirstName>
<LastName>LO</LastName>
<UUID>7054548</UUID>
<FirmNumber>13133</FirmNumber>
<AccountNumber>91189</AccountNumber>
<CompanyName>DBS BANK (HONG KONG)</CompanyName>
<EmailAddress>G_LO@Bloomberg.net</EmailAddress>
<CorporateEmailAddress>garyloyc@dbs.com</CorporateEmailAddress>
</User>
<DateTime>03/31/2016 14:56:22</DateTime>
<DateTimeUTC>1459436182</DateTimeUTC>
<ConversationID>PCHAT-0x3000001CA8361</ConversationID>
</ParticipantEntered>
<ParticipantLeft InteractionType="N" DeviceType="M">
<User>
<LoginName>G_LO</LoginName>
<FirstName>GARY</FirstName>
<LastName>LO</LastName>
<UUID>7054548</UUID>
<FirmNumber>13133</FirmNumber>
<AccountNumber>91189</AccountNumber>
<CompanyName>DBS BANK (HONG KONG)</CompanyName>
<EmailAddress>G_LO@Bloomberg.net</EmailAddress>
<CorporateEmailAddress>garyloyc@dbs.com</CorporateEmailAddress>
</User>
<DateTime>03/31/2016 19:30:01</DateTime>
<DateTimeUTC>1459452601</DateTimeUTC>
<ConversationID>PCHAT-0x3000001CA8361</ConversationID>
</ParticipantLeft>
<ParticipantLeft InteractionType="N" DeviceType="M">
<User>
<LoginName>SWONG00</LoginName>
<FirstName>STEPHEN</FirstName>
<LastName>WONG</LastName>
<UUID>4397109</UUID>
<FirmNumber>13133</FirmNumber>
<AccountNumber>231115</AccountNumber>
<CompanyName>DBS BANK LIMITED HON</CompanyName>
<EmailAddress>SWONG00@Bloomberg.net</EmailAddress>
<CorporateEmailAddress>STEPHENWONGWE@DBS.COM</CorporateEmailAddress>
</User>
<DateTime>03/31/2016 19:33:56</DateTime>
<DateTimeUTC>1459452836</DateTimeUTC>
<ConversationID>PCHAT-0x3000001CA8361</ConversationID>
</ParticipantLeft>
<ParticipantEntered InteractionType="N" DeviceType="M">
<User>
<LoginName>SWONG00</LoginName>
<FirstName>STEPHEN</FirstName>
<LastName>WONG</LastName>
<UUID>4397109</UUID>
<FirmNumber>13133</FirmNumber>
<AccountNumber>231115</AccountNumber>
<CompanyName>DBS BANK LIMITED HON</CompanyName>
<EmailAddress>SWONG00@Bloomberg.net</EmailAddress>
<CorporateEmailAddress>STEPHENWONGWE@DBS.COM</CorporateEmailAddress>
</User>
<DateTime>03/31/2016 19:45:16</DateTime>
<DateTimeUTC>1459453516</DateTimeUTC>
<ConversationID>PCHAT-0x3000001CA8361</ConversationID>
</ParticipantEntered>
<ParticipantLeft InteractionType="N" DeviceType="M">
<User>
<LoginName>SWONG00</LoginName>
<FirstName>STEPHEN</FirstName>
<LastName>WONG</LastName>
<UUID>4397109</UUID>
<FirmNumber>13133</FirmNumber>
<AccountNumber>231115</AccountNumber>
<CompanyName>DBS BANK LIMITED HON</CompanyName>
<EmailAddress>SWONG00@Bloomberg.net</EmailAddress>
<CorporateEmailAddress>STEPHENWONGWE@DBS.COM</CorporateEmailAddress>
</User>
<DateTime>03/31/2016 23:08:09</DateTime>
<DateTimeUTC>1459465689</DateTimeUTC>
<ConversationID>PCHAT-0x3000001CA8361</ConversationID>
</ParticipantLeft>
<ParticipantEntered InteractionType="N" DeviceType="M">
<User>
<LoginName>G_LO</LoginName>
<FirstName>GARY</FirstName>
<LastName>LO</LastName>
<UUID>7054548</UUID>
<FirmNumber>13133</FirmNumber>
<AccountNumber>91189</AccountNumber>
<CompanyName>DBS BANK (HONG KONG)</CompanyName>
<EmailAddress>G_LO@Bloomberg.net</EmailAddress>
<CorporateEmailAddress>garyloyc@dbs.com</CorporateEmailAddress>
</User>
<DateTime>03/31/2016 23:14:23</DateTime>
<DateTimeUTC>1459466063</DateTimeUTC>
<ConversationID>PCHAT-0x3000001CA8361</ConversationID>
</ParticipantEntered>
<Message InteractionType="N">
<User>
<LoginName>G_LO</LoginName>
<FirstName>GARY</FirstName>
<LastName>LO</LastName>
<UUID>7054548</UUID>
<FirmNumber>13133</FirmNumber>
<AccountNumber>91189</AccountNumber>
<CompanyName>DBS BANK (HONG KONG)</CompanyName>
<EmailAddress>G_LO@Bloomberg.net</EmailAddress>
<CorporateEmailAddress>garyloyc@dbs.com</CorporateEmailAddress>
</User>
<DateTime>04/01/2016 00:10:57</DateTime>
<DateTimeUTC>1459469457</DateTimeUTC>
<Content>abcdefgghhhhhh</Content>
<ConversationID>PCHAT-0x3000001CA8361</ConversationID>
</Message>
<ParticipantEntered InteractionType="N" DeviceType="M">
<User>
<LoginName>WVU</LoginName>
<FirstName>WHEELOCK</FirstName>
<LastName>VU</LastName>
<UUID>8266852</UUID>
<FirmNumber>13133</FirmNumber>
<AccountNumber>91189</AccountNumber>
<CompanyName>DBS BANK (HONG KONG)</CompanyName>
<EmailAddress>WVU@Bloomberg.net</EmailAddress>
<CorporateEmailAddress>WHEELOCKVU@DBS.COM</CorporateEmailAddress>
</User>
<DateTime>04/01/2016 00:14:05</DateTime>
<DateTimeUTC>1459469645</DateTimeUTC>
<ConversationID>PCHAT-0x3000001CA8361</ConversationID>
</ParticipantEntered>
<ParticipantEntered InteractionType="N">
<User>
<LoginName>FCHAN95</LoginName>
<FirstName>FLORENCE</FirstName>
<LastName>CHAN</LastName>
<CompanyName>GOLDMAN SACHS (ASIA)</CompanyName>
<EmailAddress>FCHAN95@Bloomberg.net</EmailAddress>
<CorporateEmailAddress />
</User>
<DateTime>04/01/2016 00:29:19</DateTime>
<DateTimeUTC>1459470559</DateTimeUTC>
<ConversationID>PCHAT-0x3000001CA8361</ConversationID>
</ParticipantEntered>
<Message InteractionType="N">
<User>
<LoginName>FCHAN95</LoginName>
<FirstName>FLORENCE</FirstName>
<LastName>CHAN</LastName>
<CompanyName>GOLDMAN SACHS (ASIA)</CompanyName>
<EmailAddress>FCHAN95@Bloomberg.net</EmailAddress>
<CorporateEmailAddress />
</User>
<DateTime>04/01/2016 00:29:19</DateTime>
<DateTimeUTC>1459470559</DateTimeUTC>
<Content>ajdakjgdljsgdsafhkafa</Content>
<ConversationID>PCHAT-0x3000001CA8361</ConversationID>
</Message>
<Message InteractionType="N">
<User>
<LoginName>FCHAN95</LoginName>
<FirstName>FLORENCE</FirstName>
<LastName>CHAN</LastName>
<CompanyName>GOLDMAN SACHS (ASIA)</CompanyName>
<EmailAddress>FCHAN95@Bloomberg.net</EmailAddress>
<CorporateEmailAddress />
</User>
<DateTime>04/01/2016 00:29:19</DateTime>
<DateTimeUTC>1459470559</DateTimeUTC>
<Content>akjdgljsafdlshf;kdsjf</Content>
<ConversationID>PCHAT-0x3000001CA8361</ConversationID>
</Message>
<Message InteractionType="N">
<User>
<LoginName>WVU</LoginName>
<FirstName>WHEELOCK</FirstName>
<LastName>VU</LastName>
<UUID>8266852</UUID>
<FirmNumber>13133</FirmNumber>
<AccountNumber>91189</AccountNumber>
<CompanyName>DBS BANK (HONG KONG)</CompanyName>
<EmailAddress>WVU@Bloomberg.net</EmailAddress>
<CorporateEmailAddress>WHEELOCKVU@DBS.COM</CorporateEmailAddress>
</User>
<DateTime>04/01/2016 00:39:32</DateTime>
<DateTimeUTC>1459471172</DateTimeUTC>
<Content>sagdksajdlsahd</Content>
<ConversationID>PCHAT-0x3000001CA8361</ConversationID>
</Message>
<ParticipantEntered InteractionType="N" DeviceType="M">
<User>
<LoginName>SWONG00</LoginName>
<FirstName>STEPHEN</FirstName>
<LastName>WONG</LastName>
<UUID>4397109</UUID>
<FirmNumber>13133</FirmNumber>
<AccountNumber>231115</AccountNumber>
<CompanyName>DBS BANK LIMITED HON</CompanyName>
<EmailAddress>SWONG00@Bloomberg.net</EmailAddress>
<CorporateEmailAddress>STEPHENWONGWE@DBS.COM</CorporateEmailAddress>
</User>
<DateTime>04/01/2016 01:01:27</DateTime>
<DateTimeUTC>1459472487</DateTimeUTC>
<ConversationID>PCHAT-0x3000001CA8361</ConversationID>
</ParticipantEntered>
<Message InteractionType="N">
<User>
<LoginName>SWONG00</LoginName>
<FirstName>STEPHEN</FirstName>
<LastName>WONG</LastName>
<UUID>4397109</UUID>
<FirmNumber>13133</FirmNumber>
<AccountNumber>231115</AccountNumber>
<CompanyName>DBS BANK LIMITED HON</CompanyName>
<EmailAddress>SWONG00@Bloomberg.net</EmailAddress>
<CorporateEmailAddress>STEPHENWONGWE@DBS.COM</CorporateEmailAddress>
</User>
<DateTime>04/01/2016 01:31:29</DateTime>
<DateTimeUTC>1459474289</DateTimeUTC>
<Content>ajdslsahdsj;a</Content>
<ConversationID>PCHAT-0x3000001CA8361</ConversationID>
</Message>
<Message InteractionType="N" DeviceType="M">
<User>
<LoginName>FCHAN95</LoginName>
<FirstName>FLORENCE</FirstName>
<LastName>CHAN</LastName>
<CompanyName>GOLDMAN SACHS (ASIA)</CompanyName>
<EmailAddress>FCHAN95@Bloomberg.net</EmailAddress>
<CorporateEmailAddress />
</User>
<DateTime>04/01/2016 02:49:46</DateTime>
<DateTimeUTC>1459478986</DateTimeUTC>
<Content>sagdkjsagdkjashdlasjd</Content>
<ConversationID>PCHAT-0x3000001CA8361</ConversationID>
</Message>
<Message InteractionType="N" DeviceType="M">
<User>
<LoginName>FCHAN95</LoginName>
<FirstName>FLORENCE</FirstName>
<LastName>CHAN</LastName>
<CompanyName>GOLDMAN SACHS (ASIA)</CompanyName>
<EmailAddress>FCHAN95@Bloomberg.net</EmailAddress>
<CorporateEmailAddress />
</User>
<DateTime>04/01/2016 02:49:46</DateTime>
<DateTimeUTC>1459478986</DateTimeUTC>
<Content>jsdhkshdksjdlsjdlks</Content>
<ConversationID>PCHAT-0x3000001CA8361</ConversationID>
</Message>
<Message InteractionType="N" DeviceType="M">
<User>
<LoginName>FCHAN95</LoginName>
<FirstName>FLORENCE</FirstName>
<LastName>CHAN</LastName>
<CompanyName>GOLDMAN SACHS (ASIA)</CompanyName>
<EmailAddress>FCHAN95@Bloomberg.net</EmailAddress>
<CorporateEmailAddress />
</User>
<DateTime>04/01/2016 03:47:37</DateTime>
<DateTimeUTC>1459482457</DateTimeUTC>
<Content>jshdkshdksjdlskld</Content>
<ConversationID>PCHAT-0x3000001CA8361</ConversationID>
</Message>
<Message InteractionType="N" DeviceType="M">
<User>
<LoginName>FCHAN95</LoginName>
<FirstName>FLORENCE</FirstName>
<LastName>CHAN</LastName>
<CompanyName>GOLDMAN SACHS (ASIA)</CompanyName>
<EmailAddress>FCHAN95@Bloomberg.net</EmailAddress>
<CorporateEmailAddress />
</User>
<DateTime>04/01/2016 03:47:37</DateTime>
<DateTimeUTC>1459482457</DateTimeUTC>
<Content>aasasasasas</Content>
<ConversationID>PCHAT-0x3000001CA8361</ConversationID>
</Message>
<EndTime>04/01/2016 03:47:37</EndTime>
<EndTimeUTC>1459482457</EndTimeUTC>
</Conversation>
</FileDump>
当前我正在显示用户和内容，但我想打印
Currently I am displaying user and content, but I want to print
userName(CountOfMessages UserSent)+userName(CountOfMessages UserSent)
例如:G_LO(1)+FCHAN95(6)+WVU(1)+SWONG00(1)
我尝试了HashMap<String, Integer>，但无法正常工作. Java 8功能无法正常运行.还尝试了番石榴的Multiset，但无济于事.
I tried HashMap<String, Integer> but it's not working as expected. Java 8 features is not working as well. Also tried Multiset of Guava but to no avail.
推荐答案
您可以使用SAX(请注意，而不是StAX)非常轻松地实现它.您也应该能够使用StAX做到这一点.我会在发布更新时发布更新. SAX上的参考实现如下
You can achieve it quite easily using SAX (note , not StAX). You should be able to do this with StAX as well. I will post an update when i do it. A reference implementation on SAX is as follows
import java.io.StringReader;
import java.util.HashMap;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
public class NumCountHandler extends DefaultHandler {
private HashMap<String, Integer> countOfNum = new HashMap<String, Integer>();
boolean isStartTagPass = false;
@Override
public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
if (qName.equalsIgnoreCase("LoginName")) {
isStartTagPass = true;
}
}
@Override
public void characters(char[] ch, int start, int length) throws SAXException {
String attributeNum = new String(ch, start, length);
if (isStartTagPass) {
if (countOfNum.containsKey(attributeNum)) {
Integer count = countOfNum.get(attributeNum);
countOfNum.put(attributeNum, new Integer(count.intValue() + 1));
} else {
countOfNum.put(attributeNum, new Integer(1));
}
}
}
@Override
public void endElement(String uri, String localName, String qName) throws SAXException {
if (qName.equalsIgnoreCase("LoginName")) {
isStartTagPass = false;
}
}
public static void main(String[] args) {
try {
String xml = "<FileDump> <Version>IBXML 1.3</Version> <Conversation Perspective=\" \" RoomType=\"P\"> <RoomID>PCHAT-0x3000001CA8361</RoomID> <StartTime>03/31/2016 13:39:01</StartTime> <StartTimeUTC>1459431541</StartTimeUTC> <ParticipantEntered InteractionType=\"N\" DeviceType=\"M\"> <User><LoginName>SWONG00</LoginName><FirstName>STEPHEN</FirstName><LastName>WONG</LastName><UUID>4397109</UUID><FirmNumber>13133</FirmNumber><AccountNumber>231115</AccountNumber><CompanyName>DBS BANK LIMITED HON</CompanyName><EmailAddress>SWONG00@Bloomberg.net</EmailAddress><CorporateEmailAddress>STEPHENWONGWE@DBS.COM</CorporateEmailAddress> </User> <DateTime>03/31/2016 13:39:01</DateTime> <DateTimeUTC>1459431541</DateTimeUTC> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </ParticipantEntered> <ParticipantEntered InteractionType=\"N\" DeviceType=\"M\"> <User><LoginName>G_LO</LoginName><FirstName>GARY</FirstName><LastName>LO</LastName><UUID>7054548</UUID><FirmNumber>13133</FirmNumber><AccountNumber>91189</AccountNumber><CompanyName>DBS BANK (HONG KONG)</CompanyName><EmailAddress>G_LO@Bloomberg.net</EmailAddress><CorporateEmailAddress>garyloyc@dbs.com</CorporateEmailAddress> </User> <DateTime>03/31/2016 14:56:22</DateTime> <DateTimeUTC>1459436182</DateTimeUTC> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </ParticipantEntered> <ParticipantLeft InteractionType=\"N\" DeviceType=\"M\"> <User><LoginName>G_LO</LoginName><FirstName>GARY</FirstName><LastName>LO</LastName><UUID>7054548</UUID><FirmNumber>13133</FirmNumber><AccountNumber>91189</AccountNumber><CompanyName>DBS BANK (HONG KONG)</CompanyName><EmailAddress>G_LO@Bloomberg.net</EmailAddress><CorporateEmailAddress>garyloyc@dbs.com</CorporateEmailAddress> </User> <DateTime>03/31/2016 19:30:01</DateTime> <DateTimeUTC>1459452601</DateTimeUTC> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </ParticipantLeft> <ParticipantLeft InteractionType=\"N\" DeviceType=\"M\"> <User><LoginName>SWONG00</LoginName><FirstName>STEPHEN</FirstName><LastName>WONG</LastName><UUID>4397109</UUID><FirmNumber>13133</FirmNumber><AccountNumber>231115</AccountNumber><CompanyName>DBS BANK LIMITED HON</CompanyName><EmailAddress>SWONG00@Bloomberg.net</EmailAddress><CorporateEmailAddress>STEPHENWONGWE@DBS.COM</CorporateEmailAddress> </User> <DateTime>03/31/2016 19:33:56</DateTime> <DateTimeUTC>1459452836</DateTimeUTC> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </ParticipantLeft> <ParticipantEntered InteractionType=\"N\" DeviceType=\"M\"> <User><LoginName>SWONG00</LoginName><FirstName>STEPHEN</FirstName><LastName>WONG</LastName><UUID>4397109</UUID><FirmNumber>13133</FirmNumber><AccountNumber>231115</AccountNumber><CompanyName>DBS BANK LIMITED HON</CompanyName><EmailAddress>SWONG00@Bloomberg.net</EmailAddress><CorporateEmailAddress>STEPHENWONGWE@DBS.COM</CorporateEmailAddress> </User> <DateTime>03/31/2016 19:45:16</DateTime> <DateTimeUTC>1459453516</DateTimeUTC> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </ParticipantEntered> <ParticipantLeft InteractionType=\"N\" DeviceType=\"M\"> <User><LoginName>SWONG00</LoginName><FirstName>STEPHEN</FirstName><LastName>WONG</LastName><UUID>4397109</UUID><FirmNumber>13133</FirmNumber><AccountNumber>231115</AccountNumber><CompanyName>DBS BANK LIMITED HON</CompanyName><EmailAddress>SWONG00@Bloomberg.net</EmailAddress><CorporateEmailAddress>STEPHENWONGWE@DBS.COM</CorporateEmailAddress> </User> <DateTime>03/31/2016 23:08:09</DateTime> <DateTimeUTC>1459465689</DateTimeUTC> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </ParticipantLeft> <ParticipantEntered InteractionType=\"N\" DeviceType=\"M\"> <User><LoginName>G_LO</LoginName><FirstName>GARY</FirstName><LastName>LO</LastName><UUID>7054548</UUID><FirmNumber>13133</FirmNumber><AccountNumber>91189</AccountNumber><CompanyName>DBS BANK (HONG KONG)</CompanyName><EmailAddress>G_LO@Bloomberg.net</EmailAddress><CorporateEmailAddress>garyloyc@dbs.com</CorporateEmailAddress> </User> <DateTime>03/31/2016 23:14:23</DateTime> <DateTimeUTC>1459466063</DateTimeUTC> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </ParticipantEntered> <Message InteractionType=\"N\"> <User><LoginName>G_LO</LoginName><FirstName>GARY</FirstName><LastName>LO</LastName><UUID>7054548</UUID><FirmNumber>13133</FirmNumber><AccountNumber>91189</AccountNumber><CompanyName>DBS BANK (HONG KONG)</CompanyName><EmailAddress>G_LO@Bloomberg.net</EmailAddress><CorporateEmailAddress>garyloyc@dbs.com</CorporateEmailAddress> </User> <DateTime>04/01/2016 00:10:57</DateTime> <DateTimeUTC>1459469457</DateTimeUTC> <Content>abcdefgghhhhhh</Content> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </Message> <ParticipantEntered InteractionType=\"N\" DeviceType=\"M\"> <User><LoginName>WVU</LoginName><FirstName>WHEELOCK</FirstName><LastName>VU</LastName><UUID>8266852</UUID><FirmNumber>13133</FirmNumber><AccountNumber>91189</AccountNumber><CompanyName>DBS BANK (HONG KONG)</CompanyName><EmailAddress>WVU@Bloomberg.net</EmailAddress><CorporateEmailAddress>WHEELOCKVU@DBS.COM</CorporateEmailAddress> </User> <DateTime>04/01/2016 00:14:05</DateTime> <DateTimeUTC>1459469645</DateTimeUTC> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </ParticipantEntered> <ParticipantEntered InteractionType=\"N\"> <User><LoginName>FCHAN95</LoginName><FirstName>FLORENCE</FirstName><LastName>CHAN</LastName><CompanyName>GOLDMAN SACHS (ASIA)</CompanyName><EmailAddress>FCHAN95@Bloomberg.net</EmailAddress><CorporateEmailAddress /> </User> <DateTime>04/01/2016 00:29:19</DateTime> <DateTimeUTC>1459470559</DateTimeUTC> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </ParticipantEntered> <Message InteractionType=\"N\"> <User><LoginName>FCHAN95</LoginName><FirstName>FLORENCE</FirstName><LastName>CHAN</LastName><CompanyName>GOLDMAN SACHS (ASIA)</CompanyName><EmailAddress>FCHAN95@Bloomberg.net</EmailAddress><CorporateEmailAddress /> </User> <DateTime>04/01/2016 00:29:19</DateTime> <DateTimeUTC>1459470559</DateTimeUTC> <Content>ajdakjgdljsgdsafhkafa</Content> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </Message> <Message InteractionType=\"N\"> <User><LoginName>FCHAN95</LoginName><FirstName>FLORENCE</FirstName><LastName>CHAN</LastName><CompanyName>GOLDMAN SACHS (ASIA)</CompanyName><EmailAddress>FCHAN95@Bloomberg.net</EmailAddress><CorporateEmailAddress /> </User> <DateTime>04/01/2016 00:29:19</DateTime> <DateTimeUTC>1459470559</DateTimeUTC> <Content>akjdgljsafdlshf;kdsjf</Content> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </Message> <Message InteractionType=\"N\"> <User><LoginName>WVU</LoginName><FirstName>WHEELOCK</FirstName><LastName>VU</LastName><UUID>8266852</UUID><FirmNumber>13133</FirmNumber><AccountNumber>91189</AccountNumber><CompanyName>DBS BANK (HONG KONG)</CompanyName><EmailAddress>WVU@Bloomberg.net</EmailAddress><CorporateEmailAddress>WHEELOCKVU@DBS.COM</CorporateEmailAddress> </User> <DateTime>04/01/2016 00:39:32</DateTime> <DateTimeUTC>1459471172</DateTimeUTC> <Content>sagdksajdlsahd</Content> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </Message> <ParticipantEntered InteractionType=\"N\" DeviceType=\"M\"> <User><LoginName>SWONG00</LoginName><FirstName>STEPHEN</FirstName><LastName>WONG</LastName><UUID>4397109</UUID><FirmNumber>13133</FirmNumber><AccountNumber>231115</AccountNumber><CompanyName>DBS BANK LIMITED HON</CompanyName><EmailAddress>SWONG00@Bloomberg.net</EmailAddress><CorporateEmailAddress>STEPHENWONGWE@DBS.COM</CorporateEmailAddress> </User> <DateTime>04/01/2016 01:01:27</DateTime> <DateTimeUTC>1459472487</DateTimeUTC> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </ParticipantEntered> <Message InteractionType=\"N\"> <User><LoginName>SWONG00</LoginName><FirstName>STEPHEN</FirstName><LastName>WONG</LastName><UUID>4397109</UUID><FirmNumber>13133</FirmNumber><AccountNumber>231115</AccountNumber><CompanyName>DBS BANK LIMITED HON</CompanyName><EmailAddress>SWONG00@Bloomberg.net</EmailAddress><CorporateEmailAddress>STEPHENWONGWE@DBS.COM</CorporateEmailAddress> </User> <DateTime>04/01/2016 01:31:29</DateTime> <DateTimeUTC>1459474289</DateTimeUTC> <Content>ajdslsahdsj;a</Content> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </Message> <Message InteractionType=\"N\" DeviceType=\"M\"> <User><LoginName>FCHAN95</LoginName><FirstName>FLORENCE</FirstName><LastName>CHAN</LastName><CompanyName>GOLDMAN SACHS (ASIA)</CompanyName><EmailAddress>FCHAN95@Bloomberg.net</EmailAddress><CorporateEmailAddress /> </User> <DateTime>04/01/2016 02:49:46</DateTime> <DateTimeUTC>1459478986</DateTimeUTC> <Content>sagdkjsagdkjashdlasjd</Content> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </Message> <Message InteractionType=\"N\" DeviceType=\"M\"> <User><LoginName>FCHAN95</LoginName><FirstName>FLORENCE</FirstName><LastName>CHAN</LastName><CompanyName>GOLDMAN SACHS (ASIA)</CompanyName><EmailAddress>FCHAN95@Bloomberg.net</EmailAddress><CorporateEmailAddress /> </User> <DateTime>04/01/2016 02:49:46</DateTime> <DateTimeUTC>1459478986</DateTimeUTC> <Content>jsdhkshdksjdlsjdlks</Content> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </Message> <Message InteractionType=\"N\" DeviceType=\"M\"> <User><LoginName>FCHAN95</LoginName><FirstName>FLORENCE</FirstName><LastName>CHAN</LastName><CompanyName>GOLDMAN SACHS (ASIA)</CompanyName><EmailAddress>FCHAN95@Bloomberg.net</EmailAddress><CorporateEmailAddress /> </User> <DateTime>04/01/2016 03:47:37</DateTime> <DateTimeUTC>1459482457</DateTimeUTC> <Content>jshdkshdksjdlskld</Content> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </Message> <Message InteractionType=\"N\" DeviceType=\"M\"> <User><LoginName>FCHAN95</LoginName><FirstName>FLORENCE</FirstName><LastName>CHAN</LastName><CompanyName>GOLDMAN SACHS (ASIA)</CompanyName><EmailAddress>FCHAN95@Bloomberg.net</EmailAddress><CorporateEmailAddress /> </User> <DateTime>04/01/2016 03:47:37</DateTime> <DateTimeUTC>1459482457</DateTimeUTC> <Content>aasasasasas</Content> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </Message> <EndTime>04/01/2016 03:47:37</EndTime> <EndTimeUTC>1459482457</EndTimeUTC> </Conversation></FileDump>";
;
InputSource is = new InputSource(new StringReader(xml));
SAXParserFactory factory = SAXParserFactory.newInstance();
SAXParser saxParser = factory.newSAXParser();
NumCountHandler userhandler = new NumCountHandler();
saxParser.parse(is, userhandler);
userhandler.countOfNum
.forEach((k, v) -> System.out.print(k +"("+v+") "));
} catch (Exception e) {
e.printStackTrace();
}
}
}
并显示:WVU(2)+G_LO(4)+FCHAN95(7)+SWONG00(6)+
=====添加了基于StaX的实现=========
=====Added a StaX based implementation==========
可以肯定地使用Java 8功能进行改进.另外，我只为小型飞行员使用了静态变量，应该能够使用类变量以及一些折射器来实现
Can be definitely improved with Java 8 features. Also , i have used static variables just for a small pilot , should be able to do it with class variables as well with some refractoring
import java.io.StringReader;
import java.util.HashMap;
import javax.xml.stream.XMLEventReader;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.events.Characters;
import javax.xml.stream.events.XMLEvent;
public class NumCountHandlerStax {
private boolean isStartTagPass = false;
static private void groupAndProcess(Object object, HashMap<String, Integer> countOfNum,
NumCountHandlerStax staxBasedCounter) {
XMLEvent event = (XMLEvent) object;
if (event.isStartElement() && event.asStartElement().getName().getLocalPart().equals("LoginName")) {
staxBasedCounter.isStartTagPass = true;
} else if (event.isEndElement() && event.asEndElement().getName().getLocalPart().equals("LoginName")) {
staxBasedCounter.isStartTagPass = false;
} else if (staxBasedCounter.isStartTagPass && event.isCharacters()) {
Characters characters = event.asCharacters();
String attributeNum = characters.getData();
if (countOfNum.containsKey(attributeNum)) {
Integer count = countOfNum.get(attributeNum);
countOfNum.put(attributeNum, new Integer(count.intValue() + 1));
} else {
countOfNum.put(attributeNum, new Integer(1));
}
}
}
public static void main(String[] args) {
try {
NumCountHandlerStax staxBasedCounter = new NumCountHandlerStax();
HashMap<String, Integer> countOfNum = new HashMap<String, Integer>();
String xml = "<FileDump> <Version>IBXML 1.3</Version> <Conversation Perspective=\" \" RoomType=\"P\"> <RoomID>PCHAT-0x3000001CA8361</RoomID> <StartTime>03/31/2016 13:39:01</StartTime> <StartTimeUTC>1459431541</StartTimeUTC> <ParticipantEntered InteractionType=\"N\" DeviceType=\"M\"> <User><LoginName>SWONG00</LoginName><FirstName>STEPHEN</FirstName><LastName>WONG</LastName><UUID>4397109</UUID><FirmNumber>13133</FirmNumber><AccountNumber>231115</AccountNumber><CompanyName>DBS BANK LIMITED HON</CompanyName><EmailAddress>SWONG00@Bloomberg.net</EmailAddress><CorporateEmailAddress>STEPHENWONGWE@DBS.COM</CorporateEmailAddress> </User> <DateTime>03/31/2016 13:39:01</DateTime> <DateTimeUTC>1459431541</DateTimeUTC> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </ParticipantEntered> <ParticipantEntered InteractionType=\"N\" DeviceType=\"M\"> <User><LoginName>G_LO</LoginName><FirstName>GARY</FirstName><LastName>LO</LastName><UUID>7054548</UUID><FirmNumber>13133</FirmNumber><AccountNumber>91189</AccountNumber><CompanyName>DBS BANK (HONG KONG)</CompanyName><EmailAddress>G_LO@Bloomberg.net</EmailAddress><CorporateEmailAddress>garyloyc@dbs.com</CorporateEmailAddress> </User> <DateTime>03/31/2016 14:56:22</DateTime> <DateTimeUTC>1459436182</DateTimeUTC> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </ParticipantEntered> <ParticipantLeft InteractionType=\"N\" DeviceType=\"M\"> <User><LoginName>G_LO</LoginName><FirstName>GARY</FirstName><LastName>LO</LastName><UUID>7054548</UUID><FirmNumber>13133</FirmNumber><AccountNumber>91189</AccountNumber><CompanyName>DBS BANK (HONG KONG)</CompanyName><EmailAddress>G_LO@Bloomberg.net</EmailAddress><CorporateEmailAddress>garyloyc@dbs.com</CorporateEmailAddress> </User> <DateTime>03/31/2016 19:30:01</DateTime> <DateTimeUTC>1459452601</DateTimeUTC> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </ParticipantLeft> <ParticipantLeft InteractionType=\"N\" DeviceType=\"M\"> <User><LoginName>SWONG00</LoginName><FirstName>STEPHEN</FirstName><LastName>WONG</LastName><UUID>4397109</UUID><FirmNumber>13133</FirmNumber><AccountNumber>231115</AccountNumber><CompanyName>DBS BANK LIMITED HON</CompanyName><EmailAddress>SWONG00@Bloomberg.net</EmailAddress><CorporateEmailAddress>STEPHENWONGWE@DBS.COM</CorporateEmailAddress> </User> <DateTime>03/31/2016 19:33:56</DateTime> <DateTimeUTC>1459452836</DateTimeUTC> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </ParticipantLeft> <ParticipantEntered InteractionType=\"N\" DeviceType=\"M\"> <User><LoginName>SWONG00</LoginName><FirstName>STEPHEN</FirstName><LastName>WONG</LastName><UUID>4397109</UUID><FirmNumber>13133</FirmNumber><AccountNumber>231115</AccountNumber><CompanyName>DBS BANK LIMITED HON</CompanyName><EmailAddress>SWONG00@Bloomberg.net</EmailAddress><CorporateEmailAddress>STEPHENWONGWE@DBS.COM</CorporateEmailAddress> </User> <DateTime>03/31/2016 19:45:16</DateTime> <DateTimeUTC>1459453516</DateTimeUTC> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </ParticipantEntered> <ParticipantLeft InteractionType=\"N\" DeviceType=\"M\"> <User><LoginName>SWONG00</LoginName><FirstName>STEPHEN</FirstName><LastName>WONG</LastName><UUID>4397109</UUID><FirmNumber>13133</FirmNumber><AccountNumber>231115</AccountNumber><CompanyName>DBS BANK LIMITED HON</CompanyName><EmailAddress>SWONG00@Bloomberg.net</EmailAddress><CorporateEmailAddress>STEPHENWONGWE@DBS.COM</CorporateEmailAddress> </User> <DateTime>03/31/2016 23:08:09</DateTime> <DateTimeUTC>1459465689</DateTimeUTC> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </ParticipantLeft> <ParticipantEntered InteractionType=\"N\" DeviceType=\"M\"> <User><LoginName>G_LO</LoginName><FirstName>GARY</FirstName><LastName>LO</LastName><UUID>7054548</UUID><FirmNumber>13133</FirmNumber><AccountNumber>91189</AccountNumber><CompanyName>DBS BANK (HONG KONG)</CompanyName><EmailAddress>G_LO@Bloomberg.net</EmailAddress><CorporateEmailAddress>garyloyc@dbs.com</CorporateEmailAddress> </User> <DateTime>03/31/2016 23:14:23</DateTime> <DateTimeUTC>1459466063</DateTimeUTC> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </ParticipantEntered> <Message InteractionType=\"N\"> <User><LoginName>G_LO</LoginName><FirstName>GARY</FirstName><LastName>LO</LastName><UUID>7054548</UUID><FirmNumber>13133</FirmNumber><AccountNumber>91189</AccountNumber><CompanyName>DBS BANK (HONG KONG)</CompanyName><EmailAddress>G_LO@Bloomberg.net</EmailAddress><CorporateEmailAddress>garyloyc@dbs.com</CorporateEmailAddress> </User> <DateTime>04/01/2016 00:10:57</DateTime> <DateTimeUTC>1459469457</DateTimeUTC> <Content>abcdefgghhhhhh</Content> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </Message> <ParticipantEntered InteractionType=\"N\" DeviceType=\"M\"> <User><LoginName>WVU</LoginName><FirstName>WHEELOCK</FirstName><LastName>VU</LastName><UUID>8266852</UUID><FirmNumber>13133</FirmNumber><AccountNumber>91189</AccountNumber><CompanyName>DBS BANK (HONG KONG)</CompanyName><EmailAddress>WVU@Bloomberg.net</EmailAddress><CorporateEmailAddress>WHEELOCKVU@DBS.COM</CorporateEmailAddress> </User> <DateTime>04/01/2016 00:14:05</DateTime> <DateTimeUTC>1459469645</DateTimeUTC> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </ParticipantEntered> <ParticipantEntered InteractionType=\"N\"> <User><LoginName>FCHAN95</LoginName><FirstName>FLORENCE</FirstName><LastName>CHAN</LastName><CompanyName>GOLDMAN SACHS (ASIA)</CompanyName><EmailAddress>FCHAN95@Bloomberg.net</EmailAddress><CorporateEmailAddress /> </User> <DateTime>04/01/2016 00:29:19</DateTime> <DateTimeUTC>1459470559</DateTimeUTC> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </ParticipantEntered> <Message InteractionType=\"N\"> <User><LoginName>FCHAN95</LoginName><FirstName>FLORENCE</FirstName><LastName>CHAN</LastName><CompanyName>GOLDMAN SACHS (ASIA)</CompanyName><EmailAddress>FCHAN95@Bloomberg.net</EmailAddress><CorporateEmailAddress /> </User> <DateTime>04/01/2016 00:29:19</DateTime> <DateTimeUTC>1459470559</DateTimeUTC> <Content>ajdakjgdljsgdsafhkafa</Content> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </Message> <Message InteractionType=\"N\"> <User><LoginName>FCHAN95</LoginName><FirstName>FLORENCE</FirstName><LastName>CHAN</LastName><CompanyName>GOLDMAN SACHS (ASIA)</CompanyName><EmailAddress>FCHAN95@Bloomberg.net</EmailAddress><CorporateEmailAddress /> </User> <DateTime>04/01/2016 00:29:19</DateTime> <DateTimeUTC>1459470559</DateTimeUTC> <Content>akjdgljsafdlshf;kdsjf</Content> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </Message> <Message InteractionType=\"N\"> <User><LoginName>WVU</LoginName><FirstName>WHEELOCK</FirstName><LastName>VU</LastName><UUID>8266852</UUID><FirmNumber>13133</FirmNumber><AccountNumber>91189</AccountNumber><CompanyName>DBS BANK (HONG KONG)</CompanyName><EmailAddress>WVU@Bloomberg.net</EmailAddress><CorporateEmailAddress>WHEELOCKVU@DBS.COM</CorporateEmailAddress> </User> <DateTime>04/01/2016 00:39:32</DateTime> <DateTimeUTC>1459471172</DateTimeUTC> <Content>sagdksajdlsahd</Content> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </Message> <ParticipantEntered InteractionType=\"N\" DeviceType=\"M\"> <User><LoginName>SWONG00</LoginName><FirstName>STEPHEN</FirstName><LastName>WONG</LastName><UUID>4397109</UUID><FirmNumber>13133</FirmNumber><AccountNumber>231115</AccountNumber><CompanyName>DBS BANK LIMITED HON</CompanyName><EmailAddress>SWONG00@Bloomberg.net</EmailAddress><CorporateEmailAddress>STEPHENWONGWE@DBS.COM</CorporateEmailAddress> </User> <DateTime>04/01/2016 01:01:27</DateTime> <DateTimeUTC>1459472487</DateTimeUTC> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </ParticipantEntered> <Message InteractionType=\"N\"> <User><LoginName>SWONG00</LoginName><FirstName>STEPHEN</FirstName><LastName>WONG</LastName><UUID>4397109</UUID><FirmNumber>13133</FirmNumber><AccountNumber>231115</AccountNumber><CompanyName>DBS BANK LIMITED HON</CompanyName><EmailAddress>SWONG00@Bloomberg.net</EmailAddress><CorporateEmailAddress>STEPHENWONGWE@DBS.COM</CorporateEmailAddress> </User> <DateTime>04/01/2016 01:31:29</DateTime> <DateTimeUTC>1459474289</DateTimeUTC> <Content>ajdslsahdsj;a</Content> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </Message> <Message InteractionType=\"N\" DeviceType=\"M\"> <User><LoginName>FCHAN95</LoginName><FirstName>FLORENCE</FirstName><LastName>CHAN</LastName><CompanyName>GOLDMAN SACHS (ASIA)</CompanyName><EmailAddress>FCHAN95@Bloomberg.net</EmailAddress><CorporateEmailAddress /> </User> <DateTime>04/01/2016 02:49:46</DateTime> <DateTimeUTC>1459478986</DateTimeUTC> <Content>sagdkjsagdkjashdlasjd</Content> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </Message> <Message InteractionType=\"N\" DeviceType=\"M\"> <User><LoginName>FCHAN95</LoginName><FirstName>FLORENCE</FirstName><LastName>CHAN</LastName><CompanyName>GOLDMAN SACHS (ASIA)</CompanyName><EmailAddress>FCHAN95@Bloomberg.net</EmailAddress><CorporateEmailAddress /> </User> <DateTime>04/01/2016 02:49:46</DateTime> <DateTimeUTC>1459478986</DateTimeUTC> <Content>jsdhkshdksjdlsjdlks</Content> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </Message> <Message InteractionType=\"N\" DeviceType=\"M\"> <User><LoginName>FCHAN95</LoginName><FirstName>FLORENCE</FirstName><LastName>CHAN</LastName><CompanyName>GOLDMAN SACHS (ASIA)</CompanyName><EmailAddress>FCHAN95@Bloomberg.net</EmailAddress><CorporateEmailAddress /> </User> <DateTime>04/01/2016 03:47:37</DateTime> <DateTimeUTC>1459482457</DateTimeUTC> <Content>jshdkshdksjdlskld</Content> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </Message> <Message InteractionType=\"N\" DeviceType=\"M\"> <User><LoginName>FCHAN95</LoginName><FirstName>FLORENCE</FirstName><LastName>CHAN</LastName><CompanyName>GOLDMAN SACHS (ASIA)</CompanyName><EmailAddress>FCHAN95@Bloomberg.net</EmailAddress><CorporateEmailAddress /> </User> <DateTime>04/01/2016 03:47:37</DateTime> <DateTimeUTC>1459482457</DateTimeUTC> <Content>aasasasasas</Content> <ConversationID>PCHAT-0x3000001CA8361</ConversationID> </Message> <EndTime>04/01/2016 03:47:37</EndTime> <EndTimeUTC>1459482457</EndTimeUTC> </Conversation></FileDump>";
;
XMLInputFactory xmlInputFactory = XMLInputFactory.newInstance();
XMLEventReader xmlEventReader = xmlInputFactory.createXMLEventReader(new StringReader(xml));
xmlEventReader.forEachRemaining(event -> groupAndProcess(event, countOfNum, staxBasedCounter));
countOfNum.forEach((k, v) -> System.out.print(k + "(" + v + ") "));
} catch (Exception e) {
e.printStackTrace();
}
}
}
Prints `WVU(2) G_LO(4) FCHAN95(7) SWONG00(6)`
这篇关于使用Java StAX解析XML-计算内容标签的数量的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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