Solr 开发 I - Installation, Indexing and Search

最新推荐文章于 2020-08-15 08:51:01 发布

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本文详细介绍了如何使用Solr进行文本的索引与搜索操作，包括安装、配置、索引生成、搜索实现等步骤，并通过一个Java应用实例展示了具体操作过程。

(1) Installation

下载 solr-XXXX.zip

（a）cmd 进入 example;

（b）> java -jar start;

（c）访问http://localhost:8983/solr/

（2）Indexing and search

（a）生成一个java application 工程

（b）引入solr4j 和solr-lib

（c）添加代码

public class tweetIndexSearchDemo extends indexing {

private static final String DEFAULT_URL = "http://localhost:8983/solr/";
private SolrServer server = null;

public tweetIndexSearchDemo()
{
server = new HttpSolrServer(DEFAULT_URL);
}

public void DoIndexing(ArrayList<_Tweet> listTweets)
{

ArrayList<SolrInputDocument> listDoc = new ArrayList<SolrInputDocument>();
for(_Tweet twt : listTweets)
{
SolrInputDocument doc = new SolrInputDocument();
doc.addField("id", twt.getTweetId());
doc.addField("name", twt.getTweetFromUserId());
doc.addField("manu", twt.getTweetText());
doc.addField("url", twt.getTweetId());
System.err.println("name:" + twt.getTweetFromUserId());
listDoc.add(doc);
}

try {

UpdateResponse response = server.add(listDoc);
server.commit();
} catch (SolrServerException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}

private void search(String key) {
// TODO Auto-generated method stub

SolrQuery query = new SolrQuery(key);

query.setQuery(key);
try {

query.setHighlight(true);
//设置开头
query.setHighlightSimplePre("<span class='highlight'>");
query.setHighlightSimplePost("</span>"); //设置结尾
query.setStart(0);
query.setRows(10);//设置行数
//设置高亮的哪些区域
query.setParam("hl.fl", "content");
QueryResponse response= this.server.query(query);
SolrDocumentList list=response.getResults();

System.out.println("高亮显示：");
for(SolrDocument sd:list)
{
String id=(String) sd.getFieldValue("id");
if(response.getHighlighting().get(id)!=null){
System.out.println(id + " " + response.getHighlighting().get(id).get("manu"));
}
}

System.out.println("-------------------");

SolrDocumentList docs = response.getResults();

System.out.println("文档个数：" + docs.getNumFound());
System.out.println("查询时间：" + response.getQTime());
System.out.println("-------------------");

for (SolrDocument doc : docs) {

// 获取查询返回结果
String id = doc.getFieldValue("id").toString();
String name = doc.getFirstValue("name").toString();
String manu = doc.getFirstValue("manu").toString();

// 打印查询结果
System.out.println("编号："+id);
System.out.println("标题："+name);
System.out.println("内容: "+manu);

System.out.println("-------------------");

}

} catch (SolrServerException e) {
e.printStackTrace();
}
}

public void search_deprecated(String query) {
SolrParams params = new SolrQuery(query);

try {

QueryResponse response = server.query(params);

SolrDocumentList list = response.getResults();
for (int i = 0; i < list.size(); i++) {
fail(list.get(i));
}
} catch (SolrServerException e) {
e.printStackTrace();
}
}

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
tweetRetriver retriver = new tweetRetriver();
ArrayList<_Tweet> listTweets = retriver.DBRetriveTweet("Jon Diebler", 30);

tweetIndexSearchDemo index = new tweetIndexSearchDemo();
index.DoIndexing(listTweets);
index.search("Sheen");
}

}