我在这个论坛上搜索了这个问题并找到了很多答案，但他的答案都没有解决我的问题 我想通过java连接到Solr应用程序（版本6.1.0），但它给了我错误。 我的代码是：
import org.apache.solr.client.solrj.SolrClient;
import org.apache.solr.client.solrj.SolrQuery;
import org.apache.solr.client.solrj.impl.HttpSolrClient;
import org.apache.solr.client.solrj.response.QueryResponse;
public class solrConnection {
public void solrConnectionTest() {
try{
String baseURL = "http://"IP-Address":8983/solr/#/test1/test2";
@SuppressWarnings("deprecation")
SolrClient solr = new HttpSolrClient(baseURL);
SolrQuery query = new SolrQuery(":");
query=new SolrQuery();
query.set("qt", "/select");
query.set("q", "sample test");
query.set("wt", "json");
QueryResponse response = solr.query(query);
System.out.println("Response is : "+response);
System.out.println("Program executed successfully");
}catch(Exception e){
e.printStackTrace();
}
}
}
Error is:
org.apache.solr.client.solrj.impl.HttpSolrClient$RemoteSolrException: Error from server at http://"IP-Address":8983/solr/#/test1/test2: Expected mime type application/octet-stream but got text/html. <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
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<head>
<title>Solr Admin</title>
<link rel="icon" type="image/ico" href="img/favicon.ico?_=4.8.1">
<link rel="stylesheet" type="text/css" href="css/styles/common.css?_=4.8.1">
<link rel="stylesheet" type="text/css" href="css/styles/analysis.css?_=4.8.1">
<link rel="stylesheet" type="text/css" href="css/styles/cloud.css?_=4.8.1">
<link rel="stylesheet" type="text/css" href="css/styles/cores.css?_=4.8.1">
<link rel="stylesheet" type="text/css" href="css/styles/dashboard.css?_=4.8.1">
<link rel="stylesheet" type="text/css" href="css/styles/dataimport.css?_=4.8.1">
<link rel="stylesheet" type="text/css" href="css/styles/files.css?_=4.8.1">
<link rel="stylesheet" type="text/css" href="css/styles/index.css?_=4.8.1">
<link rel="stylesheet" type="text/css" href="css/styles/java-properties.css?_=4.8.1">
<link rel="stylesheet" type="text/css" href="css/styles/logging.css?_=4.8.1">
<link rel="stylesheet" type="text/css" href="css/styles/menu.css?_=4.8.1">
<link rel="stylesheet" type="text/css" href="css/styles/plugins.css?_=4.8.1">
<link rel="stylesheet" type="text/css" href="css/styles/documents.css?_=4.8.1">
<link rel="stylesheet" type="text/css" href="css/styles/query.css?_=4.8.1">
<link rel="stylesheet" type="text/css" href="css/styles/replication.css?_=4.8.1">
<link rel="stylesheet" type="text/css" href="css/styles/schema-browser.css?_=4.8.1">
<link rel="stylesheet" type="text/css" href="css/styles/threads.css?_=4.8.1">
<link rel="stylesheet" type="text/css" href="css/chosen.css?_=4.8.1">
<meta http-equiv="x-ua-compatible" content="IE=9">
<script type="text/javascript">
var app_config = {};
app_config.solr_path = '\/solr';
app_config.core_admin_path = '\/admin\/cores';
</script>
</head>
<body>
<div id="wrapper">
<div id="header">
<a href="./" id="solr"><span>Apache SOLR</span></a>
<p id="environment"> </p>
</div>
<div id="main" class="clearfix">
<div id="init-failures">
<h2>SolrCore Initialization Failures</h2>
<ul></ul>
<p>Please check your logs for more information</p>
</div>
<div id="content-wrapper">
<div id="content">
</div>
</div>
<div id="menu-wrapper">
<div>
<ul id="menu">
<li id="index" class="global"><p><a href="#/">Dashboard</a></p></li>
<li id="logging" class="global"><p><a href="#/~logging">Logging</a></p>
<ul>
<li class="level"><a href="#/~logging/level">Level</a></li>
</ul>
</li>
<li id="cloud" class="global optional"><p><a href="#/~cloud">Cloud</a></p>
<ul>
<li class="tree"><a href="#/~cloud?view=tree">Tree</a></li>
<li class="graph"><a href="#/~cloud">Graph</a></li>
<li class="rgraph"><a href="#/~cloud?view=rgraph">Graph (Radial)</a></li>
<li class="dump"><a href="#/~cloud">Dump</a></li>
</ul>
</li>
<li id="cores" class="global"><p><a href="#/~cores">Core Admin</a></p></li>
<li id="java-properties" class="global"><p><a href="#/~java-properties">Java Properties</a></li>
<li id="threads" class="global"><p><a href="#/~threads">Thread Dump</a></p></li>
</ul>
<div id="core-selector">
<div id="has-cores">
<select data-placeholder="Core Selector"></select>
</div>
<p id="has-no-cores"><a href="#/~cores">
No cores available
<span>Go and create one</span>
</a></p>
</div>
<div id="core-menu">
<ul></ul>
</div>
</div>
</div>
<div id="meta">
<ul>
<li class="documentation"><a href="http://lucene.apache.org/solr/"><span>Documentation</span></a></li>
<li class="issues"><a href="http://issues.apache.org/jira/browse/SOLR"><span>Issue Tracker</span></a></li>
<li class="irc"><a href="http://webchat.freenode.net/?channels=#solr"><span>IRC Channel</span></a></li>
<li class="mailinglist"><a href="http://wiki.apache.org/solr/UsingMailingLists"><span>Community forum</span></a></li>
<li class="wiki-query-syntax"><a href="http://wiki.apache.org/solr/SolrQuerySyntax"><span>Solr Query Syntax</span></a></li>
</ul>
</div>
</div>
</div>
<div id="connection_status">
<span>Connection lost …</span>
</div>
<script type="text/javascript"> var require = { urlArgs: '_=4.8.1' }; </script>
<script src="js/require.js?_=4.8.1" data-main="js/main"></script>
</body>
</html>
at org.apache.solr.client.solrj.impl.HttpSolrClient.executeMethod(HttpSolrClient.java:558)
at org.apache.solr.client.solrj.impl.HttpSolrClient.request(HttpSolrClient.java:259)
at org.apache.solr.client.solrj.impl.HttpSolrClient.request(HttpSolrClient.java:248)
at org.apache.solr.client.solrj.SolrRequest.process(SolrRequest.java:149)
at org.apache.solr.client.solrj.SolrClient.query(SolrClient.java:942)
at org.apache.solr.client.solrj.SolrClient.query(SolrClient.java:957)
at roughwork.solrConnection.solrConnectionTest(solrConnection.java:36)
at roughwork.solrConnection.main(solrConnection.java:47)
答案 0 :(得分：1)
我现在可以使用HttpURLConnection连接到Solr。下面是我成功运行的代码。
InputFileDeclared input = new InputFileDeclared();
String url = "My URL";
private void sendGet() throws Exception {
URL obj = new URL(url);
HttpURLConnection con = (HttpURLConnection) obj.openConnection();
// optional default is GET
con.setRequestMethod("GET");
int responseCode = con.getResponseCode();
System.out.println("\nSending 'GET' request to URL : " + url);
System.out.println("Response Code : " + responseCode);
BufferedReader in = new BufferedReader(
new InputStreamReader(con.getInputStream()));
String inputLine;
StringBuffer response = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
response.append(inputLine);
}
in.close();
//print result
String data = response.toString();
System.out.println(response.toString());
}