android+lucene实现全文检索并高亮关键字

package com.jerry.service; import java.util.ArrayList; import java.util.HashMap; import org.apache.lucene.document.Document; import org.apache.lucene.search.IndexSearcher; import org.apache.lucene.search.Query; import org.apache.lucene.search.ScoreDoc; import org.apache.lucene.search.Sort; import org.apache.lucene.search.SortField; import org.apache.lucene.search.TopDocs; import org.wltea.analyzer.lucene.IKQueryParser; import android.content.Context; import android.content.Intent; import android.net.Uri; import android.view.View; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ListView; import android.widget.Toast; import com.jerry.adapter.ListViewAdapter; import com.jerry.po.Book; import com.jerry.util.HtmlUrlUtil; import com.jerry.util.LuceneDocumentUtil; import com.jerry.util.LuceneUtil; import com.jerry.util.LuneceHighlighterUtil; public class LuceneService { private Context context = null; private ListView bookListView = null; private ArrayList<String> url = null; // 定义各个查询条件的常量 private final static String[] TITLE = { "name" }; private final static String[] FIRSTTITLE = { "firstTitle" }; private final static String[] SECONDTITLE = { "secondTitle" }; private final static String[] CONTENT = { "content" }; private final static String[] ALL = { "name", "firstTitle", "secondTitle", "content" }; public LuceneService(Context context, ListView bookListView) { super(); this.context = context; this.bookListView = bookListView; } /** * * @function:将书本信息添加到ListView * @author:Jerry * @date:2013-9-24 * @param books */ public void addBookToListView(ArrayList<Book> books) { int count = books.size(); if (count > 0) { // listItem用于存放books ArrayList<HashMap<String, Object>> listItem = new ArrayList<HashMap<String, Object>>(); // 每条书本信息对应的详细信息连接 this.url = new ArrayList<String>(); // 循环遍历books，按键值对的形式存入HashMap for (int i = 0; i < count; i++) { HashMap<String, Object> item = new HashMap<String, Object>(); item.put("name", books.get(i).getName()); item.put("firstTitle", books.get(i).getFirstTitle()); item.put("secondTitle", books.get(i).getSecondTitle()); item.put("content", books.get(i).getContent()); url.add(HtmlUrlUtil.getUrl(books.get(i).getUrl())); // 把item项的数据加到listItem中 listItem.add(item); } // 新建自定义ViewAdapter ListViewAdapter listViewAdapter = new ListViewAdapter(this.context, listItem); // 把适配器装载到listView中 this.bookListView.setAdapter(listViewAdapter); // 为每个item项注册点击事件 this.bookListView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { // 当用户点击某个item项时，用浏览器打开网页，查看更详细的信息 Intent intent = new Intent(); intent.setAction("android.intent.action.VIEW"); intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); intent.setData(Uri.parse(url.get(arg2))); intent.setClassName("com.android.browser", "com.android.browser.BrowserActivity"); context.startActivity(intent); } }); } else { Toast.makeText(this.context, "没有返回数据！", Toast.LENGTH_SHORT).show(); } } /** * * @function:获取查询条件 * @author:Jerry * @date:2013-9-24 * @param item * @return String[] */ public String[] getIndexSearch(long item) { if (item == 0) { // 按书名查找 return TITLE; } else if (item == 1) { // 按章查找 return FIRSTTITLE; } else if (item == 2) { // 按节查找 return SECONDTITLE; } else if (item == 3) { // 按内容查找 return CONTENT; } else { // 查找全部 return ALL; } } /** * * @function:查询书本信息 * @author:Jerry * @date:2013-9-24 * @param key * @param value * @param currentPage * @return ArrayList */ public ArrayList<Book> queryBook(String[] key, String value, int currentPage) { ArrayList<Book> books = new ArrayList<Book>(); IndexSearcher indexSearcher = null; Query query = null; try { // 通过工具类获取indexSearcher indexSearcher = LuceneUtil.getIndexSearcher(); // 用IKQueryParser解析要查询的内容，并返回Query对象 query = IKQueryParser.parseMultiField(key, value); // 按照id进行排序 Sort sort = new Sort(new SortField("id", SortField.INT, true)); TopDocs topDocs = indexSearcher.search(query, null, 1000, sort); // ScoreDoc 存储了文档的逻辑编号和文档积分 ScoreDoc[] scoreDocs = topDocs.scoreDocs; for (ScoreDoc temp : scoreDocs) { // 根据doc的id去获取doc文档 ,返回是Document Document doc = indexSearcher.doc(temp.doc); // 通过工具类设置关键字高亮 doc.getField("name").setValue( LuneceHighlighterUtil.highlighterText(query, doc.get("name"), 10, value)); doc.getField("firstTitle").setValue( LuneceHighlighterUtil.highlighterText(query, doc.get("firstTitle"), 30, value)); doc.getField("secondTitle").setValue( LuneceHighlighterUtil.highlighterText(query, doc.get("secondTitle"), 30, value)); doc.getField("content").setValue( LuneceHighlighterUtil.highlighterText(query, doc.get("content"), 30, value)); books.add(LuceneDocumentUtil.DocumentToBook(doc)); } } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } return books; } }