通过JavaAPI集成ApacheTika和ApacheSolr

我正在尝试集成ApacheTika和ApacheSolr，以便为我的解析数据编制索引。我使用Solr版本4.3.1和Tika版本2.11.6

我所遵循的代码如下所示：

import java.io.File;
import java.io.FileInputStream;


import java.io.IOException;


import java.io.InputStream;


import java.util.UUID;

import org.apache.solr.client.solrj.SolrServer;


import org.apache.solr.client.solrj.impl.HttpSolrServer;


import org.apache.solr.common.SolrInputDocument;


import org.apache.tika.exception.TikaException;


import org.apache.tika.metadata.DublinCore;


import org.apache.tika.metadata.Metadata;


import org.apache.tika.mime.MimeTypes;


import org.apache.tika.parser.AutoDetectParser;


import org.apache.tika.parser.ParseContext;


import org.apache.tika.parser.Parser;


import org.apache.tika.sax.BodyContentHandler;


import org.xml.sax.ContentHandler;


import org.xml.sax.SAXException;


public class Main {

    private static SolrServer solr;

    public static void main(String[] args) throws IOException, SAXException, TikaException {

        try {
            solr = new HttpSolrServer("http://localhost:8983/solr/#/"); //create solr connection

            //solr.deleteByQuery( "*:*" ); //delete everything in the index; good for testing

            //location of source documents
            //later this will be switched to a database

            String path = "C:\\content\\";

            String file_html = path + "mobydick.htm";

            String file_txt = path + "/home/ben/abc.warc";



            String file_pdf = path + "callofthewild.pdf";

            processDocument(file_html);

            processDocument(file_txt);

            processDocument(file_pdf);

            solr.commit(); //after all docs are added, commit to the index

            //now you can search at http://localhost:8983/solr/browse
        }
        catch  (Exception ex) {

            System.out.println(ex.getMessage());
        }           
    }

    private static void processDocument(String pathfilename)  {

        try {
            InputStream input = new FileInputStream(new File(pathfilename));

            //use Apache Tika to convert documents in different formats to plain text
            ContentHandler textHandler = new BodyContentHandler(10*1024*1024);

            Metadata meta = new Metadata();

            Parser parser = new AutoDetectParser();

 //handles documents in different formats:
            ParseContext context = new ParseContext();   
            parser.parse(input, textHandler, meta, context); //convert to plain text

            //collect metadata and content from Tika and other sources

            //document id must be unique, use guide
        UUID guid = java.util.UUID.randomUUID();
        String docid = guid.toString();

            //Dublin Core metadata (partial set)
            String doctitle = meta.get(DublinCore.TITLE);
            String doccreator = meta.get(DublinCore.CREATOR); 

            //other metadata
            String docurl = pathfilename; //document url

            //content
            String doccontent = textHandler.toString();

            //call to index
            indexDocument(docid, doctitle, doccreator, docurl, doccontent);
        }

        catch  (Exception ex) {

            System.out.println(ex.getMessage());
        }
    }   

    private static void indexDocument(String docid, String doctitle, String doccreator, String docurl, String doccontent)  {

        try {

            SolrInputDocument doc = new SolrInputDocument();

            doc.addField("id", docid);

            //map metadata fields to default schema
            //location: path\solr-4.7.2\example\solr\collection1\conf\schema.xml

            //Dublin Core
            //thought: schema could be modified to use Dublin Core

            doc.addField("title", doctitle);

            doc.addField("author", doccreator);

            //other metadata


            doc.addField("url", docurl);

            //content (and text)
            //per schema, the content field is not indexed by default, used for returning and highlighting document content
            //the schema "copyField" command automatically copies this to the "text" field which is indexed

            doc.addField("content", doccontent);

            //indexing
            //when a field is indexed, like "text", Solr will handle tokenization, stemming, removal of stopwords etc, per the schema defn

            //add to index

            solr.add(doc);  
        } 
        catch (Exception ex) {

            System.out.println(ex.getMessage());
}     } }

我得到的错误

    Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/http/NoHttpResponseException
        at Main.main(Main.java:28)


Caused by: java.lang.ClassNotFoundException: org.apache.http.NoHttpResponseException


    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)

    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)

    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)

    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 1 more

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这似乎与提卡无关，所以我将重点关注Solr

特别是关于如何包含Solr库及其依赖项。如果你让他们通过Maven，他们应该会成功的。但是如果你是手工做的，也许你错过了一两个

---

具体地说，错误消息是关于Apache Commons HTTP（客户端）库中缺少的类。可能在依赖项或类路径中缺少它。

我通过maven添加了所有依赖项，您能告诉我如何将此代码与solr server连接起来吗。这个错误涉及缺少库。你得先把它修好。