我正在寻找一个能够解析SGML格式文档的Java解析器。
对于重复的显示器： 我知道还有其他两个讨论此主题的帖子： Parsing Java String with SGML Java SGML to XML conversion? 但没有一个能够解决这个问题，因此我开了一个新的话题。
对于将XML与SGML混淆的人： 请阅读此文：http://www.w3.org/TR/NOTE-sgml-xml-971215#null （简而言之，有足够微妙的区别至少使其以原始形式无法使用）
对于喜欢让发帖者谷歌它的人： 我已经这样做了，最接近的结果是广受欢迎的SAXParser：http://download.oracle.com/javase/1.4.2/docs/api/javax/xml/parsers/SAXParser.html 但当然这是用来作为XML解析器的。我正在寻找是否有人实现了SAX解析器的修改版本以适应SGML。
最后，我不能使用SX，因为我正在寻找Java解决方案。
谢谢！:)
Java SE包含在javax.swing.text.html.parser包中的HTML解析器。它在文档中声称是一个通用的SGML解析器，但在文档中又反驳说你应该只使用提供的HTML DTD类。
如果您将其放入宽松模式并且您的SGML文档没有很多隐含的结束标记，则可以获得合理的结果。
在这里阅读有关解析器的JavaDoc：http://docs.oracle.com/javase/6/docs/api/javax/swing/text/html/parser/DocumentParser.html
像这样创建一个实例：
new DocumentParser(DTD.getDTD("html32"))
或者您可以忽略使用自定义DTD与DocumentParser的警告，并创建一个符合您自己SGML格式规则的DTD子类。
这显然不是一个工业级的SGML解析器，但它应该是一次性数据迁移工作的良好起点。我在以前的项目中发现它对于解析HTML非常有用。
虽然这是一个非常古老的帖子，我并不声称我提供的答案是完美的，但它满足了我的需求。因此，我将保留我编写的使用堆栈获取数据的代码，以便按照我的要求进行操作。我希望它对其他人有所帮助。
try (BufferedReader br = new BufferedReader(new FileReader(new File(
fileName)))) {
while ((line = br.readLine()) != null) {
line = line.trim();
int startOfTag = line.indexOf("<");
int endOfTag = line.indexOf(">");
String currentTag = "";
if (startOfTag > -1 && endOfTag > -1) {
if (countStart)
headerTagsCounter++;
currentTag = line.substring(startOfTag + 1, endOfTag);
String currentData = line.substring(endOfTag + 1,
line.length());
if (i == 1) {
tagStack.push(currentTag);
i++;
}
if (currentData.isEmpty() || currentData == "") {//If there is no data, its a parent tag...
if (!currentTag.contains("/")) {// if its an opening tag...
switch (currentTag) {// these tags are useless in my case, so just skipping these tags.
case "CORRECTION":
case "PAPER":
case "PRIVATE-TO-PUBLIC":
case "DELETION":
case "CONFIRMING-COPY":
case "CAPTION":
case "STUB":
case "COLUMN":
case "TABLE-FOOTNOTES-SECTION":
case "FOOTNOTES":
case "PAGE":
break;
default: {
countStart = false;
int tagCounterNumber = 0;
String historyTagToRemove = "";
for (String historyTag : historyStack) {
String tagCounter = "";
if (historyTag.contains(currentTag)) {//if it's a repeating tag..Append the counter and update the same in history tag..
historyTagToRemove = historyTag;
if (historyTag
.equalsIgnoreCase(currentTag)) {
tagCounterNumber = 1;
} else if (historyTag.length() > currentTag
.length()) {
tagCounter = historyTag
.substring(currentTag
.length());
if (tagCounter != null
&& !tagCounter.isEmpty()) {
tagCounterNumber = Integer
.parseInt(tagCounter) + 1;
}
}
}
}
if (tagCounterNumber > 0)
currentTag += tagCounterNumber;
if (historyTagToRemove != null
&& !historyTagToRemove.isEmpty()) {
historyStack.remove(historyTagToRemove);
historyStack.push(currentTag);
}
tagStack.push(currentTag);
break;
}
}
} else// if its end of a tag... Match the current tag with top of stack and if its a match, pop it out
{
currentTag = currentTag.substring(1);
String tagRemoved = "";
String topStackTag = tagStack.lastElement();
if (topStackTag.contains(currentTag)) {
tagRemoved = tagStack.pop();
historyStack.push(tagRemoved);
}
if (tagStack.size() < 2)
cik = "";
if (tagStack.size() == 2 && cik != null
&& !cik.isEmpty())
for (int j = headerTagsCounter - 1; j < tagList.size(); j++) {
String item = tagList.get(j);
if (!item.contains("@@")) {
item += "@@" + cik;
tagList.remove(j);
tagList.add(j, item);
}
}
}
} else {// if current tag has some data...
currentData = currentData.trim();
String stackValue = "";
for (String tag : tagStack) {
if (stackValue != null && !stackValue.isEmpty()
&& stackValue != "")
stackValue = stackValue + "||" + tag;
else
stackValue = tag;
}
switch (currentTag) {
case "ACCESSION-NUMBER":
accessionNumber = currentData;
break;
case "FILING-DATE":
dateFiled = currentData;
break;
case "TYPE":
formType = currentData;
break;
case "CIK":
cik = currentData;
break;
}
tagList.add(stackValue + "$$" + currentTag + "::"+ currentData);
}
}
}
// Now all your data is available with in tagList, stack is separated by ||, key is separated by $$ and value is separated by ::
}
} catch (Exception e) {
// TODO Auto-generated catch block
}
}
输出：
代码输出结果：
SEC-HEADER$$SEC-HEADER::0001193125-16-799070.hdr.sgml : 20161220
SEC-HEADER$$ACCEPTANCE-DATETIME::20161220172458
SEC-HEADER$$ACCESSION-NUMBER::0001193125-16-799070
SEC-HEADER$$TYPE::485APOS
SEC-HEADER$$PUBLIC-DOCUMENT-COUNT::9
SEC-HEADER$$FILING-DATE::20161220
SEC-HEADER$$DATE-OF-FILING-DATE-CHANGE::20161220
SEC-HEADER||FILER||COMPANY-DATA$$CONFORMED-NAME::ARTISAN PARTNERS FUNDS INC@@0000935015
SEC-HEADER||FILER||COMPANY-DATA$$CIK::0000935015@@0000935015
SEC-HEADER||FILER||COMPANY-DATA$$IRS-NUMBER::391811840@@0000935015
SEC-HEADER||FILER||COMPANY-DATA$$STATE-OF-INCORPORATION::WI@@0000935015
SEC-HEADER||FILER||COMPANY-DATA$$FISCAL-YEAR-END::0930@@0000935015
SEC-HEADER||FILER||FILING-VALUES$$FORM-TYPE::485APOS@@0000935015
SEC-HEADER||FILER||FILING-VALUES$$ACT::33@@0000935015
SEC-HEADER||FILER||FILING-VALUES$$FILE-NUMBER::033-88316@@0000935015
SEC-HEADER||FILER||FILING-VALUES$$FILM-NUMBER::162062197@@0000935015
SEC-HEADER||FILER||BUSINESS-ADDRESS$$STREET1::875 EAST WISCONSIN AVE STE 800@@0000935015
SEC-HEADER||FILER||BUSINESS-ADDRESS$$CITY::MILWAUKEE@@0000935015
SEC-HEADER||FILER||BUSINESS-ADDRESS$$STATE::WI@@0000935015
SEC-HEADER||FILER||BUSINESS-ADDRESS$$ZIP::53202@@0000935015
SEC-HEADER||FILER||BUSINESS-ADDRESS$$PHONE::414-390-6100@@0000935015
SEC-HEADER||FILER||MAIL-ADDRESS$$STREET1::875 EAST WISCONSIN AVE STE 800@@0000935015
SEC-HEADER||FILER||MAIL-ADDRESS$$CITY::MILWAUKEE@@0000935015
SEC-HEADER||FILER||MAIL-ADDRESS$$STATE::WI@@0000935015
SEC-HEADER||FILER||MAIL-ADDRESS$$ZIP::53202@@0000935015
SEC-HEADER||FILER||FORMER-COMPANY$$FORMER-CONFORMED-NAME::ARTISAN FUNDS INC@@0000935015
SEC-HEADER||FILER||FORMER-COMPANY$$DATE-CHANGED::19950310@@0000935015
SEC-HEADER||FILER||FORMER-COMPANY1$$FORMER-CONFORMED-NAME::ZIEGLER FUNDS INC@@0000935015
SEC-HEADER||FILER||FORMER-COMPANY1$$DATE-CHANGED::19950109@@0000935015
SEC-HEADER||FILER1||COMPANY-DATA1$$CONFORMED-NAME::ARTISAN PARTNERS FUNDS INC@@0000935015
SEC-HEADER||FILER1||COMPANY-DATA1$$CIK::0000935015@@0000935015
SEC-HEADER||FILER1||COMPANY-DATA1$$IRS-NUMBER::391811840@@0000935015
SEC-HEADER||FILER1||COMPANY-DATA1$$STATE-OF-INCORPORATION::WI@@0000935015
SEC-HEADER||FILER1||COMPANY-DATA1$$FISCAL-YEAR-END::0930@@0000935015
SEC-HEADER||FILER1||FILING-VALUES1$$FORM-TYPE::485APOS@@0000935015
SEC-HEADER||FILER1||FILING-VALUES1$$ACT::40@@0000935015
SEC-HEADER||FILER1||FILING-VALUES1$$FILE-NUMBER::811-08932@@0000935015
SEC-HEADER||FILER1||FILING-VALUES1$$FILM-NUMBER::162062198@@0000935015
SEC-HEADER||FILER1||BUSINESS-ADDRESS1$$STREET1::875 EAST WISCONSIN AVE STE 800@@0000935015
SEC-HEADER||FILER1||BUSINESS-ADDRESS1$$CITY::MILWAUKEE@@0000935015
SEC-HEADER||FILER1||BUSINESS-ADDRESS1$$STATE::WI@@0000935015
SEC-HEADER||FILER1||BUSINESS-ADDRESS1$$ZIP::53202@@0000935015
SEC-HEADER||FILER1||BUSINESS-ADDRESS1$$PHONE::414-390-6100@@0000935015
SEC-HEADER||FILER1||MAIL-ADDRESS1$$STREET1::875 EAST WISCONSIN AVE STE 800@@0000935015
SEC-HEADER||FILER1||MAIL-ADDRESS1$$CITY::MILWAUKEE@@0000935015
SEC-HEADER||FILER1||MAIL-ADDRESS1$$STATE::WI@@0000935015
SEC-HEADER||FILER1||MAIL-ADDRESS1$$ZIP::53202@@0000935015
SEC-HEADER||FILER1||FORMER-COMPANY2$$FORMER-CONFORMED-NAME::ARTISAN FUNDS INC@@0000935015
SEC-HEADER||FILER1||FORMER-COMPANY2$$DATE-CHANGED::19950310@@0000935015
SEC-HEADER||FILER1||FORMER-COMPANY3$$FORMER-CONFORMED-NAME::ZIEGLER FUNDS INC@@0000935015
SEC-HEADER||FILER1||FORMER-COMPANY3$$DATE-CHANGED::19950109@@0000935015
SEC-HEADER||SERIES-AND-CLASSES-CONTRACTS-DATA||NEW-SERIES-AND-CLASSES-CONTRACTS$$OWNER-CIK::0000935015
SEC-HEADER||SERIES-AND-CLASSES-CONTRACTS-DATA||NEW-SERIES-AND-CLASSES-CONTRACTS||NEW-SERIES$$SERIES-ID::S000056665
SEC-HEADER||SERIES-AND-CLASSES-CONTRACTS-DATA||NEW-SERIES-AND-CLASSES-CONTRACTS||NEW-SERIES$$SERIES-NAME::Artisan Thematic Fund
SEC-HEADER||SERIES-AND-CLASSES-CONTRACTS-DATA||NEW-SERIES-AND-CLASSES-CONTRACTS||NEW-SERIES||CLASS-CONTRACT$$CLASS-CONTRACT-ID::C000179292
SEC-HEADER||SERIES-AND-CLASSES-CONTRACTS-DATA||NEW-SERIES-AND-CLASSES-CONTRACTS||NEW-SERIES||CLASS-CONTRACT$$CLASS-CONTRACT-NAME::Investor Shares