https://forum.andowson.com/posts/list/7.page JForum - http://www.jforum.net https://forum.andowson.com/posts/preList/249/386.page https://forum.andowson.com/posts/preList/249/386.page GMT JForum自2.1.8版起改用[url=http://lucene.apache.org/]Lucene[/url]作為搜尋引擎，會自動建立索引檔，產生的索引檔存放的預設目錄是$JFORUM_HOME/WEB-INF/jforumLuceneIndex，如果該目錄不存在JForum會自動建立，故需要將WEB-INF目錄設定為tomcat可寫入才行。

在Unix-like系統上可做如下的設定
chgrp tomcat WEB-INF
chmod 775 WEB-INF

2.檢查編碼設定是否正確
資料庫使用的編碼建議設定為UTF-8，並注意jforum-custom.conf裡面的設定是否也設定正確：
dbencoding=utf-8
encoding=UTF-8

3.檢查Tomcat系統設定是否正確
請勿對Connector加上URIEncoding="UTF-8"的參數，這樣會造成二次轉碼，反而找不到。

4.檢查作業系統預設編碼是否正確
檢查/etc/sysconfig/i18n內容，例如：
LANG="zh_TW.UTF-8"
SUPPORTED="zh_TW.UTF-8:zh_TW:zh"
SYSFONT="latarcyrheb-sun16"

5.search.htm請維持原來的GET method，不要改成POST method。

6.重建索引
到系統管理控制台，點選Lucene統計功能，輸入以時間區間方式，重建一次索引，如果上方的文件數不為0即表示索引建立成功。]]> https://forum.andowson.com/posts/preList/249/388.page https://forum.andowson.com/posts/preList/249/388.page GMT https://forum.andowson.com/posts/preList/249/442.page https://forum.andowson.com/posts/preList/249/442.page GMT
首先在WebRequestContext.java中插入幾行輸出(System.out.println())以便提供除錯資訊
[code=java;first-line:82]
/**
* Default constructor.
*
* @param superRequest Original <code>HttpServletRequest</code> instance
* @throws IOException
*/
public WebRequestContext(HttpServletRequest superRequest) throws IOException
{
super(superRequest);

this.query = new HashMap();
boolean isMultipart = false;

String requestType = superRequest.getMethod().toUpperCase();
String contextPath = superRequest.getContextPath();
String requestUri = this.extractRequestUri(superRequest.getRequestURI(), contextPath);
String encoding = SystemGlobals.getValue(ConfigKeys.ENCODING);
System.out.println("encoding=" + encoding);
String servletExtension = SystemGlobals.getValue(ConfigKeys.SERVLET_EXTENSION);

boolean isPost = "POST".equals(requestType);
boolean isGet = !isPost;

boolean isQueryStringEmpty = (superRequest.getQueryString() == null
|| superRequest.getQueryString().length() == 0);

if (isGet && isQueryStringEmpty && requestUri.endsWith(servletExtension)) {
superRequest.setCharacterEncoding(encoding);
this.parseFriendlyURL(requestUri, servletExtension);
}
else if (isPost) {
isMultipart = ServletFileUpload.isMultipartContent(new ServletRequestContext(superRequest));

if (isMultipart) {
this.handleMultipart(superRequest, encoding);
}
}

if (!isMultipart) {
boolean isAjax = "XMLHttpRequest".equals(superRequest.getHeader("X-Requested-With"));

if (!isAjax) {
superRequest.setCharacterEncoding(encoding);
System.out.println("request.encoding=" + encoding);
}
else {
// Ajax requests are *usually* sent using application/x-www-form-urlencoded; charset=UTF-8.
// In JForum, we assume this as always true.
superRequest.setCharacterEncoding("UTF-8");
}

String containerEncoding = SystemGlobals.getValue(ConfigKeys.DEFAULT_CONTAINER_ENCODING);

if (isPost) {
containerEncoding = encoding;
}
System.out.println("containerEncoding=" + containerEncoding);
for (Enumeration e = superRequest.getParameterNames(); e.hasMoreElements(); ) {
String name = (String)e.nextElement();

String[] values = superRequest.getParameterValues(name);

if (values != null && values.length > 1) {
for (int i = 0; i < values.length; i++) {
System.out.println("before: "+name+"["+i+"]="+values[i]);
this.addParameter(name, new String(values[i].getBytes(containerEncoding), encoding));
System.out.println("after: "+name+"["+i+"]="+new String(values[i].getBytes(containerEncoding), encoding));
}
}
else {
System.out.println("before: "+name+"="+superRequest.getParameter(name));
this.addParameter(name, new String(superRequest.getParameter(name).getBytes(containerEncoding), encoding));
System.out.println("after: "+name+"="+new String(superRequest.getParameter(name).getBytes(containerEncoding), encoding));
}
}

if (this.getModule() == null && this.getAction() == null) {
int index = requestUri.indexOf('?');

if (index > -1) {
requestUri = requestUri.substring(0, index);
}

this.parseFriendlyURL(requestUri, servletExtension);
}
}
}
[/code]
然後在搜尋頁面上的關鍵字欄位輸入「中文」，然後按下搜尋，會出現下列的錯誤訊息：
[quote]An error has occurred.

For detailed error information, please see the HTML source code, and contact the forum Administrator.

org.apache.lucene.queryParser.ParseException: Cannot parse '': Encountered "EOF" at line 1, column 0.
Was expecting one of:
NOT ...
"+" ...
"-" ...
"(" ...
"*" ...
QUOTED ...
TERM ...
PREFIXTERM ...
WILDTERM ...
"[" ...
"{" ...
NUMBER ...
[/quote]
在Tomcat的logs目錄下的stdout.log檔案內可以發現到下列的資訊：
[quote]encoding=UTF-8
request.encoding=UTF-8
containerEncoding=ISO-8859-1
before: search_keywords=中文
after: search_keywords=??
before: module=search
after: module=search
before: sort_by=relevance
after: sort_by=relevance
before: match_type=all
after: match_type=all
before: action=search
after: action=search
before: search_forum=
after: search_forum=[/quote]
可以發現，在做轉碼前我們get到的參數值是正確的，但在轉碼後就變成問號了，於是就變成Lucene剔除的符號字元，結果變成搜尋用的關鍵字串是空的。
修改方式就是在迴圈中判斷requestType是否為post，如果是(isPost == true)才轉碼，不然就用原來的值。
[code=java;first-line:140]
for (Enumeration e = superRequest.getParameterNames(); e.hasMoreElements(); ) {
String name = (String)e.nextElement();

String[] values = superRequest.getParameterValues(name);

if (values != null && values.length > 1) {
for (int i = 0; i < values.length; i++) {
if (isPost) {
this.addParameter(name, new String(values[i].getBytes(containerEncoding), encoding));
} else {
this.addParameter(name, values[i]);
}
}
}
else {
if (isPost) {
this.addParameter(name, new String(superRequest.getParameter(name).getBytes(containerEncoding), encoding));
} else {
this.addParameter(name, superRequest.getParameter(name));
}
}
}
[/code]
這樣再去搜尋就可以了。]]> https://forum.andowson.com/posts/preList/249/674.page https://forum.andowson.com/posts/preList/249/674.page GMT 我发表新的主题贴后，LUCENCE可以搜索到，但是我把jforumLuceneIndex的索引删掉之后，JFORUM就不把原来的主题贴做索引引擎了 ，也就是从启动后新发表的主题贴才做索引引擎,请问要怎么修改代码才能够全部重新都做索引引擎]]> https://forum.andowson.com/posts/preList/249/678.page https://forum.andowson.com/posts/preList/249/678.page GMT 將
[code]luceneIndexer.batchCreate(post);[/code]
替代為
[code]
luceneIndexer.create(post);[/code]

然後到管理後台，再重新執行一次從無到有的重新索引即可。
]]> https://forum.andowson.com/posts/preList/249/680.page https://forum.andowson.com/posts/preList/249/680.page GMT https://forum.andowson.com/posts/preList/249/684.page https://forum.andowson.com/posts/preList/249/684.page GMT https://forum.andowson.com/posts/preList/249/1168.page https://forum.andowson.com/posts/preList/249/1168.page GMT