线程“ main”中的异常java.lang.NoClassDefFoundError：org / apache / http / NoHttpResponseException

Question

Below code is for "Search using SolrJ". When running code this error is shown.

IDE is netbean.

public static void main(String[] args) throws MalformedURLException, SolrServerException {
**HttpSolrServer solr = new HttpSolrServer("http://localhost:8983/solr");**

SolrQuery query = new SolrQuery();
query.setQuery("sony digital camera");
query.addFilterQuery("cat:electronics","store:amazon.com");
query.setFields("id","price","merchant","cat","store");
query.setStart(0);    
query.set("defType", "edismax");

QueryResponse response = solr.query(query);
SolrDocumentList results = response.getResults();
for (int i = 0; i < results.size(); ++i) {
  System.out.println(results.get(i));
}
}

Answer 1

Exception in thread “main” java.lang.NoClassDefFoundError: org/apache/http/NoHttpResponseException

You are missing NoHttpResponseException class in your classpath while running the code. To resolve this, just add apache httpcore-4.0.1.jar to your classpath.

Answer 2

My first guess would be that you are either missing the httpcore-4.0.jar or have an old version of it, since it used on 4.0 and after.

Also check if you have it in the deployment path.