org.apache.solr.client.solrj.impl.HttpSolrClient$RemoteSolrException: Error from server at http://192.168.42.132:8080/solr: Expected mime type application/octet-stream but got text/html. <!DOCTYPE html><html><head><title>Apache Tomcat/8.5.6 - Error report</title><style type="text/css">H1 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:22px;} H2 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:16px;} H3 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:14px;} BODY {font-family:Tahoma,Arial,sans-serif;color:black;background-color:white;} B {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;} P {font-family:Tahoma,Arial,sans-serif;background:white;color:black;font-size:12px;}A {color : black;}A.name {color : black;}.line {height: 1px; background-color: #525D76; border: none;}</style> </head><body><h1>HTTP Status 404 - /solr/update</h1><div class="line"></div><p><b>type</b> Status report</p><p><b>message</b> <u>/solr/update</u></p><p><b>description</b> <u>The requested resource is not available.</u></p><hr class="line"><h3>Apache Tomcat/8.5.6</h3></body></html>
at org.apache.solr.client.solrj.impl.HttpSolrClient.executeMethod(HttpSolrClient.java:560)
at org.apache.solr.client.solrj.impl.HttpSolrClient.request(HttpSolrClient.java:261)
at org.apache.solr.client.solrj.impl.HttpSolrClient.request(HttpSolrClient.java:250)
at org.apache.solr.client.solrj.SolrRequest.process(SolrRequest.java:149)
at org.apache.solr.client.solrj.SolrClient.add(SolrClient.java:173)
at org.apache.solr.client.solrj.SolrClient.add(SolrClient.java:138)
at org.apache.solr.client.solrj.SolrClient.add(SolrClient.java:152)
at com.migo.search.test.SolrTest.TSolrJ(SolrTest.java:42)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:119)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:42)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:234)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:74)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
部分代码：
//创建连接,见apache-solr-ref-guide-6.1 p207
HttpSolrClient client=new HttpSolrClient.Builder("http://192.168.42.132:8080/solr").build();
// client.setParser(new QESXMLResponseParser());
//创建一个文档对象
SolrInputDocument document=new SolrInputDocument();
是因为我用的： solrcore （这个在当前的solr目录下是不存在的）,已经被删除了。改为存在collection1 (因为这个是默认的solrcore) 就正常通过。
所以有这样的错误一般是配置错误，或者操作的core核心不存在，或者没有配置对应的handler。都是路径错误，或者用法上的错误。 改为：
//创建连接,见apache-solr-ref-guide-6.1 p207
HttpSolrClient client=new HttpSolrClient.Builder("http://192.168.42.132:8080/solr/solrcore").build();
测试通过