线程“main”中的异常java.lang.NoClassDefFoundError:org / apache / commons / codec / DecoderException [英] Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/codec/DecoderException
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问题描述
我尝试通过Solrj查询Solr
I try Querying Solr via Solrj
这是我的代码
public class ReadFromSolr {
public static void main(String[] args) throws MalformedURLException, SolrServerException
{
String url = "http://localhost:8983/solr";
try{
SolrServer server = new CommonsHttpSolrServer(url);
ModifiableSolrParams params = new ModifiableSolrParams();
params.set("qt", "/select");
params.set("q", "name");
QueryResponse response = server.query(params);
System.out.println("response = " + response);
}
catch (MalformedURLException ex) {
ex.printStackTrace();
}
catch (SolrServerException ex) {
ex.printStackTrace();
}
}
}
它给了我一个例外
PS。我的peoject中有以下罐子:
PS. I've got the following jars in my peoject:
** apache - commons-logging,
* httpclient - 4.2,
httpcore 4.2.1,
slf4j - api 1.6.2,
apache - solr - solrj -1.4.0 ***
**apache - commons-logging,
*httpclient -4.2 ,
httpcore 4.2.1,
slf4j - api 1.6.2,
apache - solr - solrj -1.4.0***
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/codec/DecoderException
at org.apache.commons.httpclient.HttpMethodBase.<init>(HttpMethodBase.java:220)
at org.apache.commons.httpclient.methods.GetMethod.<init>(GetMethod.java:89)
at org.apache.solr.client.solrj.impl.CommonsHttpSolrServer.request(CommonsHttpSolrServer.java:288)
at org.apache.solr.client.solrj.impl.CommonsHttpSolrServer.request(CommonsHttpSolrServer.java:243)
at org.apache.solr.client.solrj.request.QueryRequest.process(QueryRequest.java:89)
at org.apache.solr.client.solrj.SolrServer.query(SolrServer.java:118)
at com.gismo.ReadFromSolr.main(ReadFromSolr.java:27)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.codec.DecoderException
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
推荐答案
您需要commons-codec.jar 。
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