Linux服务器部署邮件服务器详细操作文档

出错的信息为:
建立搜索引擎
建立搜索域和分析器
Exception in thread "main" org.apache.lucene.queryParser.ParseException: Encountered "<EOF>" at line 1, column 0.
Was expecting one of:
<NOT> ...
"+" ...
"-" ...
"(" ...
"*" ...
<QUOTED> ...
<TERM> ...
<PREFIXTERM> ...
<WILDTERM> ...
"[" ...
"{" ...
<NUMBER> ...

at org.apache.lucene.queryParser.QueryParser.generateParseException(QueryParser.java:1485)
at org.apache.lucene.queryParser.QueryParser.jj_consume_token(QueryParser.java:1365)
at org.apache.lucene.queryParser.QueryParser.Clause(QueryParser.java:997)
at org.apache.lucene.queryParser.QueryParser.Query(QueryParser.java:907)
at fangLucene.TwoLucene.main(TwoLucene.java:86)

其lucene应用代码为:

package fangLucene;
import org.apache.lucene.analysis.SimpleAnalyzer;
import org.apache.lucene.analysis.standard.StandardAnalyzer;

import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.Hits;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;

import java.sql.Connection;
import java.sql.Statement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.DriverManager;

public class TwoLucene {
public static ResultSet rs = null;
public static Statement statement = null;
public static Connection con = null;
public TwoLucene() throws Exception{

}
/**
* @param args
*/
public static void main(String[] args) throws Exception{
Directory directory = FSDirectory.getDirectory("D:\\luceneIndex");
/** 建索 */
IndexWriter indexWriter = new IndexWriter(directory,new SimpleAnalyzer(),true);
indexWriter.setMaxFieldLength(250000);
indexWriter.setMergeFactor(100);

System.out.println("开始取数据");
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
System.out.println("已装载驱动");
con = DriverManager.getConnection("jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=lssDB","sa","1234");
System.out.println("已连接上数据库");
statement = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
rs = statement.executeQuery("select databankid,TitleName,mostlycontent,lastDate from tabmdatabank");
System.out.println("已读取数据集");
String id,title,content,date;
int j=0;
while(rs.next()){
Document doc = new Document();
id = rs.getString(1);
title =rs.getString(2);
content = rs.getString(3);
date = rs.getString(4);
if(id == null)
id = "";
if(title == null)
title = "";
if(content == null )
content = "";
if(date == null)
date = "";
doc.add(new Field("dbid",id,Field.Store.YES,Field.Index.UN_TOKENIZED));
doc.add(new Field("title",title,Field.Store.YES,Field.Index.TOKENIZED,Field.TermVector.YES));
doc.add(new Field("content",content,Field.Store.NO,Field.Index.TOKENIZED,Field.TermVector.YES));
doc.add(new Field("date",date,Field.Store.COMPRESS,Field.Index.TOKENIZED));
indexWriter.addDocument(doc);

System.out.println("已添加"+(++j)+"doc,其ID为:"+id);
}
indexWriter.optimize();
rs.close();
statement.close();
con.close();
System.out.println("结束取数据");
indexWriter.close();
System.out.println("已生成所有数据索引");

//*********************************************************************
/** 搜索 */
IndexReader reader = IndexReader.open(directory);
IndexSearcher indexSearcher = new IndexSearcher(reader);
System.out.println("建立搜索引擎");
QueryParser parser = new QueryParser("content",new SimpleAnalyzer());
System.out.println("建立搜索域和分析器");
Query query = parser.Query("劳动法律");
System.out.println("提供搜索内容");
Hits hits = indexSearcher.search(query);
System.out.println("进行搜索并返回数据集");
for(int i=0;i<hits.length();i++){
Document doc = hits.doc(i);
System.out.println(doc.get("title"));
}
System.out.println("取得查询数据标题");
directory.close();
indexSearcher.close();

System.out.println("关闭搜索器");

}

public static void getCon() throws Exception{

}
public static void getStatement() throws Exception{

}

}