Solr 报错：java.lang.NoClassDefFoundError: org/apache/http/entity/mime/content/ContentBody

HBase协处理器中使用Solr时报错，如下

2018-07-11 17:06:14,054 INFO  [LruBlockCacheStatsExecutor] hfile.LruBlockCache: totalSize=417.42 KB, freeSize=395.89 MB, max=396.30 MB, blockCount=0, accesses=0, hits=0, hitRatio=0, cachingAccesses=0, cachingHits=0, cachingHitsRatio=0,evictions=8069, evicted=0, evictedPerRun=0.0
2018-07-11 17:06:23,523 ERROR [RpcServer.FifoWFPBQ.priority.handler=19,queue=1,port=16000] master.MasterRpcServices: Region server bjqt231.qt,16020,1531219308266 reported a fatal error:
ABORTING region server bjqt231.qt,16020,1531219308266: The coprocessor com.hbase.coprocesser.HbaseDataSyncEsObserver threw java.lang.NoClassDefFoundError: org/apache/http/entity/mime/content/ContentBody
Cause:
java.lang.NoClassDefFoundError: org/apache/http/entity/mime/content/ContentBody
        at com.hbase.coprocesser.SolrUtil.insert(SolrUtil.java:53)
        at com.hbase.coprocesser.HbaseDataSyncEsObserver.postPut(HbaseDataSyncEsObserver.java:79)
        at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost$32.call(RegionCoprocessorHost.java:923)
        at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost$RegionOperation.call(RegionCoprocessorHost.java:1660)
        at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.execOperation(RegionCoprocessorHost.java:1734)
        at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.execOperation(RegionCoprocessorHost.java:1692)
        at org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.postPut(RegionCoprocessorHost.java:919)
        at org.apache.hadoop.hbase.regionserver.HRegion.doMiniBatchMutation(HRegion.java:3413)
        at org.apache.hadoop.hbase.regionserver.HRegion.batchMutate(HRegion.java:2986)
        at org.apache.hadoop.hbase.regionserver.HRegion.batchMutate(HRegion.java:2928)
        at org.apache.hadoop.hbase.regionserver.RSRpcServices.doBatchOp(RSRpcServices.java:748)
        at org.apache.hadoop.hbase.regionserver.RSRpcServices.doNonAtomicRegionMutation(RSRpcServices.java:708)
        at org.apache.hadoop.hbase.regionserver.RSRpcServices.multi(RSRpcServices.java:2124)
        at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:32393)
        at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2141)
        at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:112)
        at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:187)
        at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:167)
Caused by: java.lang.ClassNotFoundException: org.apache.http.entity.mime.content.ContentBody
        at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        ... 18 more

　可看到提示说找不到类

org.apache.http.entity.mime.content.ContentBody

解决方法：添加依赖，如下

<dependency>
  <groupId>org.apache.httpcomponents</groupId>
  <artifactId>httpmime</artifactId>
  <version>4.3.2</version>
</dependency>

　如果是HBase协处理器使用，建议打jar包时将依赖也打进jar包，在pom中添加

<build>
    <finalName>SolrTest</finalName>
    
    <plugins>
    <plugin>
    <artifactId>maven-assembly-plugin</artifactId>
    <configuration>
      <descriptorRefs>
        <descriptorRef>jar-with-dependencies</descriptorRef>
      </descriptorRefs>
      <archive>
        <manifest>
          <mainClass></mainClass>
        </manifest>
      </archive>
    </configuration>
    <executions>
      <execution>
        <id>make-assembly</id>
        <phase>package</phase>
        <goals>
          <goal>single</goal>
        </goals>
      </execution>
    </executions>
  </plugin>
  </plugins>
  </build>

　　maven install打包即可。