eclipse: Bad version number in .class file

最新推荐文章于 2016-11-11 19:20:29 发布
原创 最新推荐文章于 2016-11-11 19:20:29 发布 · 484 阅读 · 0 ·
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#eclipse #compiler #jdk #file #tomcat

本文介绍了解决在Eclipse中启动Tomcat时出现的java.lang.UnsupportedClassVersionError异常的方法，主要涉及检查和调整项目的JDK设置。

在eclipse 下启动TOMCAT经常遇到如下异常:

java.lang.UnsupportedClassVersionError: Bad version number in .class file

解决办法:检查相关的三个JDK设置:

(1)项目->属性->JAVA COMPILER

(2)eclipse 设置->JAVA->COMPILER

(3)ECLIPSE 设置->my eclipse enterprise workbench->servers->tomcat ->jdk

 

三处的JDK设置

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就是最新的，每次都删掉了再把重新打包的放上去 2025-10-30 03:17:32,000 INFO zookeeper.ZooKeeper: Client environment:java.library.path=/export/servers/hadoop-3.3.6/lib/native 2025-10-30 03:17:32,000 INFO zookeeper.ZooKeeper: Client environment:java.io.tmpdir=/tmp 2025-10-30 03:17:32,000 INFO zookeeper.ZooKeeper: Client environment:java.compiler=<NA> 2025-10-30 03:17:32,000 INFO zookeeper.ZooKeeper: Client environment:os.name=Linux 2025-10-30 03:17:32,001 INFO zookeeper.ZooKeeper: Client environment:os.arch=amd64 2025-10-30 03:17:32,001 INFO zookeeper.ZooKeeper: Client environment:os.version=3.10.0-693.el7.x86_64 2025-10-30 03:17:32,001 INFO zookeeper.ZooKeeper: Client environment:user.name=root 2025-10-30 03:17:32,001 INFO zookeeper.ZooKeeper: Client environment:user.home=/root 2025-10-30 03:17:32,001 INFO zookeeper.ZooKeeper: Client environment:user.dir=/opt 2025-10-30 03:17:32,001 INFO zookeeper.ZooKeeper: Client environment:os.memory.free=90MB 2025-10-30 03:17:32,001 INFO zookeeper.ZooKeeper: Client environment:os.memory.max=443MB 2025-10-30 03:17:32,001 INFO zookeeper.ZooKeeper: Client environment:os.memory.total=193MB 2025-10-30 03:17:32,006 INFO zookeeper.ZooKeeper: Initiating client connection, connectString=hadoop01:2181,hadoop02:2181,hadoop03:2181 sessionTimeout=90000 watcher=org.apache.hadoop.hbase.zookeeper.ReadOnlyZKClient$$Lambda$21/1955935810@75aa6823 2025-10-30 03:17:32,022 INFO common.X509Util: Setting -D jdk.tls.rejectClientInitiatedRenegotiation=true to disable client-initiated TLS renegotiation 2025-10-30 03:17:32,034 INFO zookeeper.ClientCnxnSocket: jute.maxbuffer value is 1048575 Bytes 2025-10-30 03:17:32,046 INFO zookeeper.ClientCnxn: zookeeper.request.timeout value is 0. feature enabled=false 2025-10-30 03:17:32,058 INFO zookeeper.ClientCnxn: Opening socket connection to server hadoop03/192.168.150.133:2181. 2025-10-30 03:17:32,060 INFO zookeeper.ClientCnxn: SASL config status: Will not attempt to authenticate using SASL (unknown error) 2025-10-30 03:17:32,070 INFO zookeeper.ClientCnxn: Socket connection established, initiating session, client: /192.168.150.131:44958, server: hadoop03/192.168.150.133:2181 2025-10-30 03:17:32,143 INFO zookeeper.ClientCnxn: Session establishment complete on server hadoop03/192.168.150.133:2181, session id = 0x300001297900006, negotiated timeout = 40000 2025-10-30 03:17:33,818 INFO zookeeper.ZooKeeper: Session: 0x300001297900006 closed 2025-10-30 03:17:33,818 INFO zookeeper.ClientCnxn: EventThread shut down for session: 0x300001297900006 2025-10-30 03:17:34,969 INFO mapreduce.JobResourceUploader: Disabling Erasure Coding for path: /tmp/hadoop-yarn/staging/root/.staging/job_1761763809659_0003 2025-10-30 03:17:38,258 INFO zookeeper.ZooKeeper: Initiating client connection, connectString=hadoop01:2181,hadoop02:2181,hadoop03:2181 sessionTimeout=90000 watcher=org.apache.hadoop.hbase.zookeeper.ReadOnlyZKClient$$Lambda$21/1955935810@75aa6823 2025-10-30 03:17:38,264 INFO zookeeper.ClientCnxnSocket: jute.maxbuffer value is 1048575 Bytes 2025-10-30 03:17:38,264 INFO zookeeper.ClientCnxn: zookeeper.request.timeout value is 0. feature enabled=false 2025-10-30 03:17:38,265 INFO zookeeper.ClientCnxn: Opening socket connection to server hadoop01/192.168.150.131:2181. 2025-10-30 03:17:38,265 INFO zookeeper.ClientCnxn: SASL config status: Will not attempt to authenticate using SASL (unknown error) 2025-10-30 03:17:38,266 INFO zookeeper.ClientCnxn: Socket connection established, initiating session, client: /192.168.150.131:36484, server: hadoop01/192.168.150.131:2181 2025-10-30 03:17:38,308 INFO zookeeper.ClientCnxn: Session establishment complete on server hadoop01/192.168.150.131:2181, session id = 0x10000139d9e0017, negotiated timeout = 40000 2025-10-30 03:17:38,316 INFO mapreduce.RegionSizeCalculator: Calculating region sizes for table "ns_ct:calllog". 2025-10-30 03:17:38,676 INFO util.log: Logging initialized @16480ms to org.eclipse.jetty.util.log.Slf4jLog 2025-10-30 03:17:38,849 INFO zookeeper.ZooKeeper: Session: 0x10000139d9e0017 closed 2025-10-30 03:17:38,849 INFO zookeeper.ClientCnxn: EventThread shut down for session: 0x10000139d9e0017 2025-10-30 03:17:38,861 INFO mapreduce.JobSubmitter: number of splits:4 2025-10-30 03:17:38,940 INFO Configuration.deprecation: yarn.resourcemanager.zk-address is deprecated. Instead, use hadoop.zk.address 2025-10-30 03:17:38,940 INFO Configuration.deprecation: io.bytes.per.checksum is deprecated. Instead, use dfs.bytes-per-checksum 2025-10-30 03:17:38,940 INFO Configuration.deprecation: yarn.resourcemanager.system-metrics-publisher.enabled is deprecated. Instead, use yarn.system-metrics-publisher.enabled 2025-10-30 03:17:39,247 INFO mapreduce.JobSubmitter: Submitting tokens for job: job_1761763809659_0003 2025-10-30 03:17:39,247 INFO mapreduce.JobSubmitter: Executing with tokens: [] 2025-10-30 03:17:39,508 INFO conf.Configuration: resource-types.xml not found 2025-10-30 03:17:39,508 INFO resource.ResourceUtils: Unable to find 'resource-types.xml'. 2025-10-30 03:17:39,881 INFO impl.YarnClientImpl: Submitted application application_1761763809659_0003 2025-10-30 03:17:39,934 INFO mapreduce.Job: The url to track the job: http://hadoop02:8088/proxy/application_1761763809659_0003/ 2025-10-30 03:17:39,934 INFO mapreduce.Job: Running job: job_1761763809659_0003 2025-10-30 03:17:54,285 INFO mapreduce.Job: Job job_1761763809659_0003 running in uber mode : false 2025-10-30 03:17:54,291 INFO mapreduce.Job: map 0% reduce 0% 2025-10-30 03:18:16,346 INFO mapreduce.Job: map 25% reduce 0% 2025-10-30 03:18:19,853 INFO mapreduce.Job: map 75% reduce 0% 2025-10-30 03:18:20,864 INFO mapreduce.Job: map 100% reduce 0% 2025-10-30 03:18:36,007 INFO mapreduce.Job: map 100% reduce 100% 2025-10-30 03:18:36,017 INFO mapreduce.Job: Job job_1761763809659_0003 completed successfully 2025-10-30 03:18:36,238 INFO mapreduce.Job: Counters: 67 File System Counters FILE: Number of bytes read=5964621 FILE: Number of bytes written=13523740 FILE: Number of read operations=0 FILE: Number of large read operations=0 FILE: Number of write operations=0 HDFS: Number of bytes read=445 HDFS: Number of bytes written=0 HDFS: Number of read operations=4 HDFS: Number of large read operations=0 HDFS: Number of write operations=0 HDFS: Number of bytes read erasure-coded=0 Job Counters Killed map tasks=1 Launched map tasks=4 Launched reduce tasks=1 Data-local map tasks=3 Rack-local map tasks=1 Total time spent by all maps in occupied slots (ms)=91376 Total time spent by all reduces in occupied slots (ms)=16244 Total time spent by all map tasks (ms)=91376 Total time spent by all reduce tasks (ms)=16244 Total vcore-milliseconds taken by all map tasks=91376 Total vcore-milliseconds taken by all reduce tasks=16244 Total megabyte-milliseconds taken by all map tasks=93569024 Total megabyte-milliseconds taken by all reduce tasks=16633856 Map-Reduce Framework Map input records=45242 Map output records=135690 Map output bytes=5693235 Map output materialized bytes=5964639 Input split bytes=445 Combine input records=0 Combine output records=0 Reduce input groups=7522 Reduce shuffle bytes=5964639 Reduce input records=135690 Reduce output records=7522 Spilled Records=271380 Shuffled Maps =4 Failed Shuffles=0 Merged Map outputs=4 GC time elapsed (ms)=2520 CPU time spent (ms)=27330 Physical memory (bytes) snapshot=1377050624 Virtual memory (bytes) snapshot=14049800192 Total committed heap usage (bytes)=1255784448 Peak Map Physical memory (bytes)=427880448 Peak Map Virtual memory (bytes)=2846461952 Peak Reduce Physical memory (bytes)=280657920 Peak Reduce Virtual memory (bytes)=2824417280 HBaseCounters BYTES_IN_REMOTE_RESULTS=8861245 BYTES_IN_RESULTS=24679481 MILLIS_BETWEEN_NEXTS=18596 NOT_SERVING_REGION_EXCEPTION=0 REGIONS_SCANNED=4 REMOTE_RPC_CALLS=8 REMOTE_RPC_RETRIES=0 ROWS_FILTERED=0 ROWS_SCANNED=45242 RPC_CALLS=24 RPC_RETRIES=0 Shuffle Errors BAD_ID=0 CONNECTION=0 IO_ERROR=0 WRONG_LENGTH=0 WRONG_MAP=0 WRONG_REDUCE=0 File Input Format Counters Bytes Read=0 File Output Format Counters Bytes Written=0 [root@hadoop01 opt]# jar tf ct_analysis1-1.0-SNAPSHOT-jar-with-dependencies.jar | grep UserRelationshipOutputFormat outputformat/UserRelationshipOutputFormat$UserRelationshipRecordWriter.class outputformat/UserRelationshipOutputFormat.class [root@hadoop01 opt]#
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