我正在使用基本身份验证。我的solr版本是4.1。我可以获得查询结果，但是当我尝试索引文档时，我收到以下错误消息：
org.apache.solr.client.solrj.SolrServerException: IOException occured when talking to server at: http://192.168.0.1:8983/solr/my_core
at org.apache.solr.client.solrj.impl.HttpSolrServer.request(HttpSolrServer.java:416)
at org.apache.solr.client.solrj.impl.HttpSolrServer.request(HttpSolrServer.java:181)
at org.apache.solr.client.solrj.request.AbstractUpdateRequest.process(AbstractUpdateRequest.java:117)
at org.apache.solr.client.solrj.SolrServer.add(SolrServer.java:116)
at org.apache.solr.client.solrj.SolrServer.add(SolrServer.java:102)
at warningletter.Process.run(Process.java:128)
at warningletter.WarningLetter.parseListPage(WarningLetter.java:81)
at warningletter.WarningLetter.init(WarningLetter.java:47)
at warningletter.WarningLetter.main(WarningLetter.java:21)
Caused by: org.apache.http.client.ClientProtocolException
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:822)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:754)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:732)
at org.apache.solr.client.solrj.impl.HttpSolrServer.request(HttpSolrServer.java:353)
... 8 more
Caused by: org.apache.http.client.NonRepeatableRequestException: Cannot retry request with a non-repeatable request entity.
at org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:625)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:464)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820)
... 11 more
这是我的代码片段：
DefaultHttpClient httpclient = new DefaultHttpClient();
httpclient.getCredentialsProvider().setCredentials(AuthScope.ANY, new UsernamePasswordCredentials("user", "password"));
HttpSolrServer server = new HttpSolrServer("http://192.168.0.1:8983/solr/warning_letter/", httpclient);
SolrInputDocument solrDoc = new SolrInputDocument();
solrDoc.addField("id", "id1");
solrDoc.addField("letter", "letter");
server.add(solrDoc);
server.commit();
我究竟做错了什么？
诀窍是使用抢占式身份验证，以避免在发送“未经授权”的响应后需要重复查询。
这是例子使用 Apache HttpClient 4 进行抢占式基本身份验证 https://stackoverflow.com/questions/2014700/preemptive-basic-authentication-with-apache-httpclient-4/11868040#11868040
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