用compass快速給你的網站添加搜尋功能<二>

在上一篇文章中主要講了，配置要索引的表和compass與spring整合時的配置。接下來我把餘下的兩部分寫出來。

第三步：配置手動建立索引的功能。

這個其實隻需在第一次生成索引的時候用，當系統正常運作時，compass中的hibernateGps會自動檢測資料的變動，同時同步索引檔案的。

首先在applicationContext.xml中配置bean.

<bean id="buildIndexController"

class="org.compass.spring.web.mvc.CompassIndexController">

</bean>

同時我們也要配置與之相應的請求映射。

<bean id="urlHandlerMapping"

class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">

<props>

<prop key="/buildindex.htm">buildIndexController</prop>

</props>

</property>

最後就是自動生成索引的頁面了，這裡我用的是freemarker.用什麼都一樣，你可以用jsp,html.

create.ftl(在WebRoot下的ftl檔案夾下)

<html>

<head>

<title>builderIndex</title>

</head>

<body>

<h1>

手工重建索引

</h1>

<p>

</form>

<#if indexResults?exists>

本次索引耗時${indexResults.indexTime}毫秒！

</#if>

<p>

</body>

</html>

當我們點選手工重建索引按鈕時，會在我們指定的索引目錄下<prop key="compass.engine.connection">E:/video</prop>也就先在E:/video下生成gpsindex/video-index當索引生成完以後，會傳回生成索引所用的毫秒數。這時就會把gpsindex檔案夾下的video-index覆寫到E:/video/index/下的video-index檔案夾。這時gpsindex/video-index也消失了。這就是簡單的生成索引的過程。接下來我們要說最後一步了。索引我們已建好了，怎麼去搜尋我們想要的資料了。

第四步：建立搜尋功能。

首先寫一個controller.即searchController.java

public class SearchController extends AbstractCompassCommandController {

private String searchView;

private String searchResultsView;

private String searchResultsName = "searchResults";

private Integer pageSize;

private Integer sectionSize;

private CompassSearchHelper searchHelper;

public CompassSearchHelper getSearchHelper() {

return searchHelper;

}

public SearchController() {

setCommandClass(CompassSearchCommand.class);

public void afterPropertiesSet() throws Exception {

super.afterPropertiesSet();

if (searchView == null) {

throw new IllegalArgumentException(

"Must set the searchView property");

}

if (searchResultsView == null) {

"Must set the serachResultsView property");

if (searchHelper == null) {

searchHelper = new CompassSearchHelper(getCompass(), getPageSize());

protected ModelAndView handle(HttpServletRequest request,

HttpServletResponse response, Object command, BindException errors)

throws Exception {

Log log4j = LogFactory.getLog("video");

log4j.info("SearchController say: hello");

final CompassSearchCommand searchCommand = (CompassSearchCommand) command;

String query = searchCommand.getQuery();

searchCommand.setQuery(query);

if (!StringUtils.hasText(searchCommand.getQuery())) {

return new ModelAndView(getSearchView(), getCommandName(),

searchCommand);

CompassSearchResults searchResults = searchHelper.search(searchCommand);

log4j.info("searchResults.getHits().length = "

+ searchResults.getHits().length);

CompassPage page = new CompassPage(searchResults.getHits(),

pageSize.intValue(),

searchCommand.getPage().intValue() + 1,

searchResults.getTotalHits(),

sectionSize.intValue(),

searchCommand.getQuery(),

searchResults.getSearchTime());

return new ModelAndView(getSearchResultsView(), "data", page);

/**

* Returns the view that holds the screen which the user will initiate the

* search operation.

public String getSearchView() {

return searchView;

* Sets the view that holds the screen which the user will initiate the

public void setSearchView(String searchView) {

this.searchView = searchView;

* Returns the name of the results that the

* saved under. Defaults to "searchResults".

public String getSearchResultsName() {

return searchResultsName;

* Sets the name of the results that the

public void setSearchResultsName(String searchResultsName) {

this.searchResultsName = searchResultsName;

* Returns the view which will show the results of the search operation.

public String getSearchResultsView() {

return searchResultsView;

* Sets the view which will show the results of the search operation.

public void setSearchResultsView(String resultsView) {

this.searchResultsView = resultsView;

* Sets the page size for the pagination of the results. If not set, not

* pagination will be used.

public Integer getPageSize() {

return pageSize;

* Returns the page size for the pagination of the results. If not set, not

* @param pageSize

* The page size when using paginated results

public void setPageSize(Integer pageSize) {

this.pageSize = pageSize;

* <p>

* The search helper is used to execute teh actual search. By default (if

* not set) the search controller will create a new search helper. If

* provided, the search controller will use it to perform the search.

* Mainly used to extend the search helper and execute additional operation

* within specific calbacks the search helper exposes.

* @param searchHelper

* A specific search helper to use

public void setSearchHelper(CompassSearchHelper searchHelper) {

this.searchHelper = searchHelper;

public Integer getSectionSize() {

return sectionSize;

public void setSectionSize(Integer sectionSize) {

this.sectionSize = sectionSize;

}

還需要一個CompassPage.java主要來實作分頁的。

public class CompassPage implements Page {

private CompassHit[] elements;

private int pageSize;

private int pageNumber;

private int totalElements = 0;

private int sectionSize;

private String query;

private long searchTime;

public long getSearchTime() {

return searchTime;

public void setSearchTime(long searchTime) {

this.searchTime = searchTime;

* @param pageNumber

* 目前頁編碼，從1開始，如果傳的值為Integer.MAX_VALUE表示擷取最後一頁。

* 如果你不知道最後一頁編碼，傳Integer.MAX_VALUE即可。如果目前頁超過總頁數，也表示最後一頁。

* 這兩種情況将重新更改目前頁的頁碼為最後一頁編碼。

* 每一頁顯示的條目數

* @param sectionSize

* 每一節顯示的頁數.

public CompassPage(CompassHit[] elements, int pageSize, int pageNumber, int totalElements, int sectionSize, String query, long searchTime) {

super();

this.elements = elements;

this.pageNumber = pageNumber;

this.totalElements = totalElements;

this.query = query;

if (Integer.MAX_VALUE == this.pageNumber

|| this.pageNumber > getLastPageNumber()) // last page

{

this.pageNumber = getLastPageNumber();

}

public String getQuery() {

return query;

public void setQuery(String query) {

public CompassHit[] getElements() {

return elements;

public void setElements(CompassHit[] elements) {

public int getPageNumber() {

return pageNumber;

public void setPageNumber(int pageNumber) {

public int getSectionSize() {

public void setSectionSize(int sectionSize) {

public int getTotalElements() {

return totalElements;

public void setTotalElements(int totalElements) {

public void setPageSize(int pageSize) {

public int getLastPageNumber() {

return totalElements % this.pageSize == 0 ? totalElements

/ this.pageSize : totalElements / this.pageSize + 1;

public int getNextPageNumber() {

return getThisPageNumber() + 1;

public int getNextSectionFirstPageNumber() {

return (pageNumber / sectionSize + 1) * sectionSize + 1;

public int getPageSize() {

public int getPreviousPageNumber() {

return (getThisPageNumber() == 1) ? 1 : getThisPageNumber() - 1;

public int getPreviousSectionFirstPageNumber() {

return (pageNumber / sectionSize - 1) * sectionSize + 1;

public Object getThisPageElements() {

public int getThisPageFirstElementNumber() {

return (getThisPageNumber() - 1) * getPageSize() + 1;

public int getThisPageLastElementNumber() {

int fullPage = getThisPageFirstElementNumber() + getPageSize() - 1;

return getTotalNumberOfElements() < fullPage ? getTotalNumberOfElements()

: fullPage;

public int getThisPageNumber() {

public int getThisSectionFirstPageNumber() {

return (getThisPageNumber() % sectionSize == 0) ? getThisPageNumber()

/ sectionSize * sectionSize : getThisPageNumber() / sectionSize

* sectionSize + 1;

public int getThisSectionLastPageNumber() {

int fullSection = (getThisPageNumber() / sectionSize + 1) * sectionSize;

return getLastPageNumber() < fullSection ? getLastPageNumber()

: fullSection;

public List getThisSectionPagesBar() {

// 翻頁頁碼條

List pagesBar = new ArrayList();

if (hasPreviousSection()) { // 不是第一捆

if (hasNextSection()) {// 不是最後一捆

for (int j = getPreviousSectionFirstPageNumber() + sectionSize; j <= getNextSectionFirstPageNumber() - 1; j++) {

pagesBar.add(new Integer(j));

}

} else { // 是最後一捆

for (int j = getPreviousSectionFirstPageNumber() + sectionSize; j <= (getLastPageNumber()); j++) {

}

} else { // 是第一捆

// log4j.info("是第一捆 getLastPageNumber()=" + getLastPageNumber());

for (int j = 1; j <= (getLastPageNumber() < sectionSize ? getLastPageNumber()

: sectionSize); j++) {

// log4j.info("j=" + j);

pagesBar.add(new Integer(j));

return pagesBar;

public int getTotalNumberOfElements() {

public boolean hasNextPage() {

return getLastPageNumber() > getThisPageNumber();

public boolean hasNextSection() {

return getLastPageNumber() > (pageNumber / sectionSize + 1)

* sectionSize;

public boolean hasPreviousPage() {

return getThisPageNumber() > 1;

public boolean hasPreviousSection() {

return pageNumber / sectionSize * sectionSize > 1;

public boolean isFirstPage() {

return getThisPageNumber() == 1;

public boolean isLastPage() {

return getThisPageNumber() >= getLastPageNumber();

在定義一個分頁接口Page.java。

/**

* 分頁資訊接口

public interface Page

{

/**

* 是否是首頁（第一頁），第一頁頁碼為1

* @return 首頁辨別

public boolean isFirstPage();

* 是否是最後一頁

* @return 末頁辨別

public boolean isLastPage();

* 是否有下一頁

* @return 下一頁辨別

public boolean hasNextPage();

* 是否有上一頁

* @return 上一頁辨別

public boolean hasPreviousPage();

是否有下一個頁面單元

public boolean hasNextSection();

/**是否有前一個頁面單元*/

public boolean hasPreviousSection();

* 擷取最後一頁頁碼，也就是總頁數

* @return 最後一頁頁碼

public int getLastPageNumber();

* 目前頁包含的資料，不同的情況可能傳回的資料類型不一樣，如List，RowSet等，請參考具體的實作

* @return 目前頁資料源

public Object getThisPageElements();

* 總的資料條目數量，0表示沒有資料

* @return 總數量

public int getTotalNumberOfElements();

* 擷取目前頁的首條資料的行編碼

* @return 目前頁的首條資料的行編碼

public int getThisPageFirstElementNumber();

* 擷取目前頁的末條資料的行編碼

* @return 目前頁的末條資料的行編碼

public int getThisPageLastElementNumber();

* 擷取下一頁編碼

* @return 下一頁編碼

public int getNextPageNumber();

* 擷取上一頁編碼

* @return 上一頁編碼

public int getPreviousPageNumber();

/* 擷取下一個頁面單元的第一頁 */

public int getNextSectionFirstPageNumber();

/* 擷取前一個頁面單元的第一頁 */

public int getPreviousSectionFirstPageNumber();

* 每一頁顯示的條目數

* @return 每一頁顯示的條目數

public int getPageSize();

* 目前頁的頁碼

* @return 目前頁的頁碼

public int getThisPageNumber();

目前片斷第一頁頁碼

public int getThisSectionFirstPageNumber();

public int getThisSectionLastPageNumber();

*目前片斷頁碼表

public List getThisSectionPagesBar();

最後要配置一下bean和請求映射了。

<bean id="urlHandlerMapping"

<prop key="/search.htm">searchController</prop>

</props>

<bean id="searchController"

class="com.jack.video.SearchController" lazy-init="true">

<property name="searchResultsView"

value="/ftl/search.ftl" />

最後為了能給搜尋到的結果高亮顯示。還需要配置。

<bean id="advanceCompassSearchHelper"

class="com.jack.video.util.AdvanceCompassSearchHelper">

<list>

<value>CName</value>

</list>

<constructor-arg ref="compass" />

AdvanceCompassSearchHelper .java檔案

public class AdvanceCompassSearchHelper extends CompassSearchHelper {

private String[] highlightFields;

public String[] getHighlightFields() {

return highlightFields;

public void setHighlightFields(String[] highlightFields) {

this.highlightFields = highlightFields;

* @param compass

public AdvanceCompassSearchHelper(Compass compass) {

super(compass);

* (non-Javadoc)

* @see org.compass.core.support.search.CompassSearchHelper#doProcessBeforeDetach(org.compass.core.support.search.CompassSearchCommand,

* org.compass.core.CompassSession, org.compass.core.CompassHits, int,

* int)

@Override

protected void doProcessBeforeDetach(CompassSearchCommand searchCommand,

CompassSession session, CompassHits hits, int from, int size) {

if (from < 0) {

from = 0;

size = hits.getLength();

if (highlightFields == null) {

return;

// highlight fields

for (int i = from; i < size; i++) {

for (String highlightField : highlightFields) {

hits.highlighter(i).fragment(highlightField);

最後就剩下簡單的搜尋頁面和顯示頁面了。

這是搜尋頁主要的代碼。

本文轉自 weijie@java 51CTO部落格，原文連結：http://blog.51cto.com/weijie/74363，如需轉載請自行聯系原作者

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