indexaction.java

全文搜索源码,基于开源项目Lucene编写,开发语言为JAVA,本程序做为LUCENE的示例DEMO

package com.ht.gis.action;

import com.ht.gis.form.IndexForm;
import org.apache.struts.action.*;
import javax.servlet.http.*;
import javax.servlet.ServletContext;
import com.ht.gis.service.*;
import com.ht.gis.search.*;

public class IndexAction extends Action {
  private static Log log = LogFactory.getLog("WebGIS");

  public ActionForward execute(ActionMapping actionMapping, ActionForm actionForm, HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) {
    try{
      //=============== 取表单数据 =======================
      IndexForm indexForm = (IndexForm)actionForm;
      String order = indexForm.getOrder();
      //=============== 对数据库进行全文索引 ================
      HttpSession httpSession = httpServletRequest.getSession(false);
      ServletContext servContext = httpSession.getServletContext();
      Indexer indexer = (Indexer)servContext.getAttribute("Indexer");
      String responseXML = indexer.setIndex();

      //=============== 返回结果数据表单 ==================
      httpServletResponse.getWriter().println(responseXML);
      return null;

    }catch(Exception e){
      log.error(e);
      ActionErrors errors = new ActionErrors();
      errors.add("username", new ActionError("login.defeat"));
      this.saveErrors(httpServletRequest, errors);
      return actionMapping.findForward("fault");
    }  }
}