Error loading class 'solr.HMMChineseTokenizerFactory'

查看server/logs/solr.log日志，发现关键异常：

Caused by: org.apache.solr.common.SolrException: Plugin init failure for [schema.xml] analyzer/tokenizer: Error loading class 'solr.HMMChineseTokenizerFactory'
    at org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:182) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.FieldTypePluginLoader.readAnalyzer(FieldTypePluginLoader.java:376) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:95) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:53) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:152) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.IndexSchema.readSchema(IndexSchema.java:481) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.IndexSchema.<init>(IndexSchema.java:180) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.ManagedIndexSchema.<init>(ManagedIndexSchema.java:105) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.ManagedIndexSchemaFactory.create(ManagedIndexSchemaFactory.java:173) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.ManagedIndexSchemaFactory.create(ManagedIndexSchemaFactory.java:45) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.IndexSchemaFactory.buildIndexSchema(IndexSchemaFactory.java:75) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.core.ConfigSetService.createIndexSchema(ConfigSetService.java:119) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.core.ConfigSetService.getConfig(ConfigSetService.java:92) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.core.CoreContainer.getConfigSet(CoreContainer.java:1236) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1183) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    ... 7 more
Caused by: org.apache.solr.common.SolrException: Error loading class 'solr.HMMChineseTokenizerFactory'
    at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:557) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.core.SolrResourceLoader.newInstance(SolrResourceLoader.java:626) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.FieldTypePluginLoader$2.create(FieldTypePluginLoader.java:356) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.FieldTypePluginLoader$2.create(FieldTypePluginLoader.java:349) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:152) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.FieldTypePluginLoader.readAnalyzer(FieldTypePluginLoader.java:376) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:95) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:53) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:152) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.IndexSchema.readSchema(IndexSchema.java:481) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.IndexSchema.<init>(IndexSchema.java:180) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.ManagedIndexSchema.<init>(ManagedIndexSchema.java:105) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.ManagedIndexSchemaFactory.create(ManagedIndexSchemaFactory.java:173) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.ManagedIndexSchemaFactory.create(ManagedIndexSchemaFactory.java:45) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.IndexSchemaFactory.buildIndexSchema(IndexSchemaFactory.java:75) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.core.ConfigSetService.createIndexSchema(ConfigSetService.java:119) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.core.ConfigSetService.getConfig(ConfigSetService.java:92) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.core.CoreContainer.getConfigSet(CoreContainer.java:1236) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1183) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    ... 7 more
Caused by: java.lang.ClassNotFoundException: solr.HMMChineseTokenizerFactory
    at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[?:1.8.0_251]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[?:1.8.0_251]
    at java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:817) ~[?:1.8.0_251]
    at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[?:1.8.0_251]
    at java.lang.Class.forName0(Native Method) ~[?:1.8.0_251]
    at java.lang.Class.forName(Class.java:348) ~[?:1.8.0_251]
    at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:541) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.core.SolrResourceLoader.newInstance(SolrResourceLoader.java:626) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.FieldTypePluginLoader$2.create(FieldTypePluginLoader.java:356) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.FieldTypePluginLoader$2.create(FieldTypePluginLoader.java:349) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:152) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.FieldTypePluginLoader.readAnalyzer(FieldTypePluginLoader.java:376) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:95) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.FieldTypePluginLoader.create(FieldTypePluginLoader.java:53) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.util.plugin.AbstractPluginLoader.load(AbstractPluginLoader.java:152) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.IndexSchema.readSchema(IndexSchema.java:481) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.IndexSchema.<init>(IndexSchema.java:180) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.ManagedIndexSchema.<init>(ManagedIndexSchema.java:105) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.ManagedIndexSchemaFactory.create(ManagedIndexSchemaFactory.java:173) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.ManagedIndexSchemaFactory.create(ManagedIndexSchemaFactory.java:45) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.schema.IndexSchemaFactory.buildIndexSchema(IndexSchemaFactory.java:75) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.core.ConfigSetService.createIndexSchema(ConfigSetService.java:119) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.core.ConfigSetService.getConfig(ConfigSetService.java:92) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.core.CoreContainer.getConfigSet(CoreContainer.java:1236) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]
    at org.apache.solr.core.CoreContainer.createFromDescriptor(CoreContainer.java:1183) ~[solr-core-7.7.2.jar:7.7.2 d4c30fc2856154f2c1fefc589eb7cd070a415b94 - janhoy - 2019-05-28 23:37:48]

 按照网上写全类名，重启还是不管用。折腾半天，最后把contrib/analysis-extras/lucene-libs/lucene-analyzers-smartcn-7.7.2.jar加入到classpath就可以了，可以用grep HMMChineseTokenizerFactory -r 这个命令找到这个jar包，版本号可能不同，如果没找到说明你的solr版本可能有问题或者解压的时候没完全 。加入classpath的操作如下：

找到你的core/config/solrconfig.xml，在<lib/>标签附近添加一行:

 <lib dir="${solr.install.dir:../../../..}/contrib/analysis-extras/lucene-libs" regex=".*.jar" />

managed-schema用全类名，用solr.HMMChineseTokenizerFactory都可以

最后重启即可。

如果你想以后创建的core都能找到这个类，那么 solrconfig.xml就是server/solr/configsets/_default/conf/ 或者sample_techproducts_configs下的，同样重启生效。