import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Iterator;
import javax.xml.stream.XMLEventReader;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.events.Attribute;
import javax.xml.stream.events.Characters;
import javax.xml.stream.events.XMLEvent;
import 앞전소스들.Feed;
import 앞전소스들.FeedMessage;
/**
* @author torrms
*
*/
public class RSSFeedParser {
static final String TITLE = "title";
static final String DESCRIPTION = "description";
static final String LANGUAGE = "language";
static final String LINK = "link";
static final String AUTHOR = "author";
static final String ITEM = "item";
static final String LAST_BUILD_DATE = "lastBuildDate";
//message
static final String PUB_DATE = "pubDate";
static final String CATEGORY = "category";
static final String THUMBNAIL = "thumbnail";
final URL url;
public RSSFeedParser(String feedUrl) {
try {
this.url = new URL(feedUrl);
} catch (MalformedURLException e) {
throw new RuntimeException(e);
}
}
public Feed readFeed() {
Feed feed = null;
try {
boolean isFeedHeader = true;
// Set header values intial to the empty string
String description = "";
String title = "";
String link = "";
String language = "";
String author = "";
String lastBuildDate = "";
String category = "";
String pubDate = "";
String thumbnail = "";
// First create a new XMLInputFactory
XMLInputFactory inputFactory = XMLInputFactory.newInstance();
// Setup a new eventReader
InputStream in = read3();
XMLEventReader eventReader = inputFactory.createXMLEventReader(in);
// read the XML document
while (eventReader.hasNext()) {
XMLEvent event = eventReader.nextEvent();
if (event.isStartElement()) {
String localPart = event.asStartElement().getName()
.getLocalPart();
switch (localPart) {
case ITEM:
if (isFeedHeader) {
isFeedHeader = false;
feed = new Feed(title, link, description, language,lastBuildDate);
}
event = eventReader.nextEvent();
break;
case TITLE:
title = getCharacterData(event, eventReader);
break;
case DESCRIPTION:
description = getCharacterData(event, eventReader);
break;
case LINK:
link = getCharacterData(event, eventReader);
break;
case LANGUAGE:
language = getCharacterData(event, eventReader);
break;
case AUTHOR:
author = getCharacterData(event, eventReader);
break;
case LAST_BUILD_DATE:
lastBuildDate = getCharacterData(event, eventReader);
break;
case PUB_DATE:
pubDate = getCharacterData(event, eventReader);
break;
case CATEGORY:
category = getCharacterData(event, eventReader);
break;
case THUMBNAIL:
thumbnail = getCharacterData(event, eventReader);
// ex ) <media:thumbnail url="https://imgnews.pstatic.net/image/thumb140/5551/2019/09/04/60286.jpg"/> 형태이므로
@SuppressWarnings("unchecked") Iterator<Attribute> attribue = event.asStartElement().getAttributes();
while(attribue.hasNext()){
Attribute myAttribute = attribue.next();
if(myAttribute.getName().toString().equals("url")){
thumbnail = myAttribute.getValue();
}
}
break;
default:
//System.out.println("localPart:"+ localPart);
break;
}
} else if (event.isEndElement()) {
if (event.asEndElement().getName().getLocalPart() == (ITEM)) {
FeedMessage message = new FeedMessage();
message.setAuthor(author);
message.setDescription(description);
message.setLink(link);
message.setTitle(title);
message.setCategory(category);
message.setPubdate(pubDate);
message.setThumbnail(thumbnail);
feed.getMessages().add(message);
event = eventReader.nextEvent();
continue;
}
}
}
} catch (XMLStreamException e) {
throw new RuntimeException(e);
}
return feed;
}
private String getCharacterData(XMLEvent event, XMLEventReader eventReader)
throws XMLStreamException {
String result = "";
event = eventReader.nextEvent();
if (event instanceof Characters) {
result = event.asCharacters().getData();
}
return result;
}
// 기존 리더
// private InputStream read() {
// try {
// return url.openStream();
// } catch (IOException e) {
// throw new RuntimeException(e);
// }
// }
private InputStream read3() {
try {
ReplacingInputStream ris = new ReplacingInputStream(url.openStream(), "'", "'");
return ris;
} catch (IOException e) {
throw new RuntimeException(e);
}
}
public static InputStream byteArrayToInputStream(byte[] srcBytes) {
return new ByteArrayInputStream(srcBytes);
}
}
기존의 리더리를 통해 읽어서 테스트를 진행 하도록 했습니다.
정보는 정리가 되어 잘 오고 있었습니다. 그런데...
원정보
...
<title>'미드 체르노빌....' XXXX </title>
...
출력정보
...
title = '
...
그렇습니다. 기존의 단순 url.openStream 으로 InputStream 으로는 따옴표가 읽혀 지지 않습니다.
작은 따옴표(싱글 퀘테이션) 등이 말썽으로 원천의 스트림을 출력해보면
'미드 체르노빌 ...
위와 같이 읽어 오는 것이 바로 치환이 되버려서 오는 겁니다.
짜증이... 변환이 필요합니다. replace 처럼요... 물론 replace를 쓸수는 없습니다. 스트림이니까요
외국에 깃 양반을 검색합니다. .... 검색중... 그렇습니다. 전 할 줄 모르고 구글이 해줍니다. ^^;
마침네. simon 이란 시몬이란 양반이 만들어 놓은게 있습니다. 데려옵니다.
두둥, ReplacingInputStream 클래스가 바로 그것입니다.
ReplacingInputStream .java
import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.Queue;
/**
* Created by simon on 8/29/17.
*/
public class ReplacingInputStream extends FilterInputStream {
private Queue<Integer> inQueue, outQueue;
private final byte[] search, replacement;
public ReplacingInputStream(InputStream in, String search, String replacement) {
super(in);
this.inQueue = new LinkedList<>();
this.outQueue = new LinkedList<>();
this.search = search.getBytes();
this.replacement = replacement.getBytes();
}
private boolean isMatchFound() {
Iterator<Integer> iterator = inQueue.iterator();
for (byte b : search) {
if (!iterator.hasNext() || b != iterator.next()) {
return false;
}
}
return true;
}
private void readAhead() throws IOException {
// Work up some look-ahead.
while (inQueue.size() < search.length) {
int next = super.read();
inQueue.offer(next);
if (next == -1) {
break;
}
}
}
@Override
public int read() throws IOException {
// Next byte already determined.
while (outQueue.isEmpty()) {
readAhead();
if (isMatchFound()) {
for (@SuppressWarnings("unused") byte a : search) {
inQueue.remove();
}
for (byte b : replacement) {
outQueue.offer((int) b);
}
} else {
outQueue.add(inQueue.remove());
}
}
return outQueue.remove();
}
@Override
public int read(byte b[]) throws IOException {
return read(b, 0, b.length);
}
// copied straight from InputStream inplementation, just needed to to use `read()` from this class
@Override
public int read(byte b[], int off, int len) throws IOException {
if (b == null) {
throw new NullPointerException();
} else if (off < 0 || len < 0 || len > b.length - off) {
throw new IndexOutOfBoundsException();
} else if (len == 0) {
return 0;
}
int c = read();
if (c == -1) {
return -1;
}
b[off] = (byte)c;
int i = 1;
try {
for (; i < len ; i++) {
c = read();
if (c == -1) {
break;
}
b[off + i] = (byte)c;
}
} catch (IOException ee) {
}
return i;
}
}
사랑해 줍니다.
그러면 문제가 해결되어 나오게 됩니다. 아~ 테스트 소스도 올립니다.
단, json 이나 여타 다른 정보는 설정이 된 상태에서 합니다.
따라서 java APP 소스와 컨트롤러( Controller )는 상황에 맞게 하시면 됩니다.
JAVA
import 앞전소스.Feed;
import 앞전소스.FeedMessage;
/**
* @author torrms
*
*/
public class testRss {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
RSSFeedParser parser = new RSSFeedParser(
"http://newssearch.naver.com/search.naver?where=rss&query=3D 프린터");
Feed feed = parser.readFeed();
System.out.println(feed);
for (FeedMessage message : feed.getMessages()) {
System.out.println(message);
}
}
}
Controller
// 네이버 뉴스 RSS 테스트(웹) /////////////////////////////////////////////////////////////////////////////////////////
@RequestMapping(value = "/getNewsRSSAjax.json")
public ModelAndView getNewPage(@RequestParam Map<String, Object> commandMap) {
ModelAndView mv = new ModelAndView();
mv.setViewName("jsonView");
log.info("getNewPage");
String result = "false";
try {
String keyword = (String) commandMap.get("keyword");
String maxcnt = (String) commandMap.get("maxcnt");
String Url = "http://newssearch.naver.com/search.naver?where=rss&query=" + keyword;
log.info("Url:" + Url);
RSSFeedParser parser = new RSSFeedParser(Url);
Feed feed = parser.readFeed();
feed.getMessages();
// TODO 방식 고려
// 메모리 방식으로 변경을 고려해야함 RSS 너무 자주 부르게 되므로
List<Map<String, Object>> listMap = new ArrayList<Map<String, Object>>();
int i = 0 ;
int maxcnt_int = 0;
if (maxcnt != null)
maxcnt_int = Integer.valueOf(maxcnt)+1;
for (FeedMessage message : feed.getMessages()) {
i++;
if (i == maxcnt_int)
break;
Map<String, Object> obj = new HashMap<String, Object>();
obj.put("title" , message.getTitle() );
obj.put("link" , message.getLink() );
obj.put("description" , message.getDescription() );
obj.put("pubdate" , message.getPubdate() );
obj.put("author" , message.getAuthor() );
obj.put("category" , message.getCategory() );
obj.put("thumbnail" , message.getThumbnail() );
// System.out.println(message);
// System.out.println(obj);
listMap.add(obj);
}
mv.addObject("resultList",listMap);
result = "true";
} catch (NullPointerException e) {
log.info("NullPointerException :" + e.toString());
} catch (Exception e) {
log.info(e.toString());
}
mv.addObject("result", result);
return mv ;
}
WEB
<div id="RSS">
</div>
<!-- jquery 선언 후-->
<script type="text/javaScript" >
// 시작
$(function(){
/////////////////////////////////////////////////////////////////////////
//RSS 가져오기
$.ajax({
url:"<c:url value='/getNewsRSSAjax.json' />", //요청할 데이터 경로.
type: 'GET',
data:{
keyword: "3D 프린터",
maxcnt: "5",
},
dataType: "json", //요청할 데이터에 타입.
crossDomain: true,
success: function (data) { //성공적으로 요청했왔을 때...
console.info(data);
$.each(data.resultList,function(i, d){
var title=d["title"]; //title 키의 값을 가져옵니다.
var date=new Date(d["pubdate"]); //뉴스 작성 날짜 객체 생성
var img=d["thumbnail"];
var dateString = date_to_str(date);
$("#RSS").append("<ul style='height:140px;'><li><img src='"+img+"'/></li><li>" + title+ "</li><li>" + dateString+ "</li></ul><br/>" );
});
},
error: function (response) {
console.info(response.status);
console.info(response.error);
} // “success: function”에 종료
}); // $.ajax() 메서드에 종료
</script>
