[英]Solrj - cannot inherit from final class error due to HTTPSolrServer
我一直在使用Solr版本4.10.2。 我通過使用Maven(pom.xml)添加了solrj版本4.10.2
<dependency>
<groupId>org.apache.solr</groupId>
<artifactId>solr-solrj</artifactId>
<version>4.10.2</version>
<scope>compile</scope>
</dependency>
這些是已安裝的Maven依賴項:
solr-solrj-4.10.2.jar
httpclient-4.3.1.jar
httpcore-4.3.jar
httpmime-4.3.1.jar
wstx-asl-3.2.7.jar
wstx-asl-3.2.7.jar
noggit-0.5.jar
當我定義solr http路徑時,我會得到和異常:
Exception in thread "main" java.lang.VerifyError: Cannot inherit from final class
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at org.apache.http.impl.client.DefaultHttpClient.createHttpParams(DefaultHttpClient.java:157)
at org.apache.http.impl.client.AbstractHttpClient.getParams(AbstractHttpClient.java:447)
at org.apache.solr.client.solrj.impl.HttpClientUtil.setFollowRedirects(HttpClientUtil.java:260)
at org.apache.solr.client.solrj.impl.HttpClientConfigurer.configure(HttpClientConfigurer.java:60)
at org.apache.solr.client.solrj.impl.HttpClientUtil.configureClient(HttpClientUtil.java:142)
at org.apache.solr.client.solrj.impl.HttpClientUtil.createClient(HttpClientUtil.java:118)
at org.apache.solr.client.solrj.impl.HttpSolrServer.<init>(HttpSolrServer.java:168)
at org.apache.solr.client.solrj.impl.HttpSolrServer.<init>(HttpSolrServer.java:141)
at addIndex.main(addIndex.java:10)
這是我定義Solr路徑的方式:
HttpSolrServer server = new HttpSolrServer("http://localhost:8983/solr");
要么
HttpSolrServer server = new HttpSolrServer("http://localhost:8983/solr/#/collection1");
還有另一種方法可以與Java項目建立連接嗎? 我得到此例外的原因是什么?
如果要連接到Solr(並使用SolrJ作為客戶端庫),則應該實例化HttpSolrClient
:
String urlString = "http://localhost:8983/solr/collection1";
SolrClient solr = new HttpSolrClient(urlString);
順便說一句:URL中的錨(例如#foo)僅適用於客戶端(例如瀏覽器),並不意味着(因此通常不會)作為請求的一部分進行傳輸。
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