访问终端中的json元素

时间：2016-07-05 16:39:06

标签： json terminal

我有许多大型json文件，我需要能够在终端中快速阅读。我感兴趣的是访问每个json的最后一个元素中的属性，例如，它可能看起来像这样：

2016-07-05 22:25:27,810 WARN  [main] util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
2016-07-05 22:25:54,791 ERROR [main] zookeeper.RecoverableZooKeeper: ZooKeeper exists failed after 4 attempts
2016-07-05 22:25:54,793 WARN  [main] zookeeper.ZKUtil: hconnection-0x205765570x0, quorum=localhost:2181, baseZNode=/hbase Unable to set watcher on znode (/hbase/hbaseid)
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase/hbaseid
        at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
        at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
        at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1045)
        at org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.exists(RecoverableZooKeeper.java:221)
        at org.apache.hadoop.hbase.zookeeper.ZKUtil.checkExists(ZKUtil.java:541)
        at org.apache.hadoop.hbase.zookeeper.ZKClusterId.readClusterIdZNode(ZKClusterId.java:65)
        at org.apache.hadoop.hbase.client.ZooKeeperRegistry.getClusterId(ZooKeeperRegistry.java:105)
        at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.retrieveClusterId(ConnectionManager.java:880)
        at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.<init>(ConnectionManager.java:636)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:238)
        at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:218)
        at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:119)
        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:498)
        at org.jruby.javasupport.JavaMethod.invokeDirectWithExceptionHandling(JavaMethod.java:450)
        at org.jruby.javasupport.JavaMethod.invokeStaticDirect(JavaMethod.java:362)
        at org.jruby.java.invokers.StaticMethodInvoker.call(StaticMethodInvoker.java:58)
        at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:312)
        at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:169)
        at org.jruby.ast.CallOneArgNode.interpret(CallOneArgNode.java:57)
        at org.jruby.ast.InstAsgnNode.interpret(InstAsgnNode.java:95)
        at org.jruby.ast.NewlineNode.interpret(NewlineNode.java:104)
        at org.jruby.ast.BlockNode.interpret(BlockNode.java:71)
        at org.jruby.evaluator.ASTInterpreter.INTERPRET_METHOD(ASTInterpreter.java:74)
        at org.jruby.internal.runtime.methods.InterpretedMethod.call(InterpretedMethod.java:169)
        at org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:191)
        at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:302)
        at org.jruby.runtime.callsite.CachingCallSite.callBlock(CachingCallSite.java:144)
        at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:148)
        at org.jruby.RubyClass.newInstance(RubyClass.java:822)
        at org.jruby.RubyClass$i$newInstance.call(RubyClass$i$newInstance.gen:65535)
        at org.jruby.internal.runtime.methods.JavaMethod$JavaMethodZeroOrNBlock.call(JavaMethod.java:249)
        at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:292)
        at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:135)
        at home.alex.hbase_minus_1_dot_1_dot_5.bin.$_dot_dot_.bin.hirb.__file__(/home/alex/hbase-1.1.5/bin/../bin/hirb.rb:118)
        at home.alex.hbase_minus_1_dot_1_dot_5.bin.$_dot_dot_.bin.hirb.load(/home/alex/hbase-1.1.5/bin/../bin/hirb.rb)
        at org.jruby.Ruby.runScript(Ruby.java:697)
        at org.jruby.Ruby.runScript(Ruby.java:690)
        at org.jruby.Ruby.runNormally(Ruby.java:597)
        at org.jruby.Ruby.runFromMain(Ruby.java:446)
        at org.jruby.Main.doRunFromMain(Main.java:369)
        at org.jruby.Main.internalRun(Main.java:258)
        at org.jruby.Main.run(Main.java:224)
        at org.jruby.Main.run(Main.java:208)
        at org.jruby.Main.main(Main.java:188)
2016-07-05 22:25:54,799 ERROR [main] zookeeper.ZooKeeperWatcher: hconnection-0x205765570x0, quorum=localhost:2181, baseZNode=/hbase Received unexpected KeeperException, re-throwing exception
org.apache.zookeeper.KeeperException$ConnectionLossException: KeeperErrorCode = ConnectionLoss for /hbase/hbaseid
        at org.apache.zookeeper.KeeperException.create(KeeperException.java:99)
        at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
        at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1045)
        at org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.exists(RecoverableZooKeeper.java:221)
        at org.apache.hadoop.hbase.zookeeper.ZKUtil.checkExists(ZKUtil.java:541)
        at org.apache.hadoop.hbase.zookeeper.ZKClusterId.readClusterIdZNode(ZKClusterId.java:65)
        at org.apache.hadoop.hbase.client.ZooKeeperRegistry.getClusterId(ZooKeeperRegistry.java:105)
        at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.retrieveClusterId(ConnectionManager.java:880)
        at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.<init>(ConnectionManager.java:636)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:238)
        at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:218)
        at org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:119)
        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:498)
        at org.jruby.javasupport.JavaMethod.invokeDirectWithExceptionHandling(JavaMethod.java:450)
        at org.jruby.javasupport.JavaMethod.invokeStaticDirect(JavaMethod.java:362)
        at org.jruby.java.invokers.StaticMethodInvoker.call(StaticMethodInvoker.java:58)
        at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:312)
        at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:169)
        at org.jruby.ast.CallOneArgNode.interpret(CallOneArgNode.java:57)
        at org.jruby.ast.InstAsgnNode.interpret(InstAsgnNode.java:95)
        at org.jruby.ast.NewlineNode.interpret(NewlineNode.java:104)
        at org.jruby.ast.BlockNode.interpret(BlockNode.java:71)
        at org.jruby.evaluator.ASTInterpreter.INTERPRET_METHOD(ASTInterpreter.java:74)
        at org.jruby.internal.runtime.methods.InterpretedMethod.call(InterpretedMethod.java:169)
        at org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:191)
        at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:302)
        at org.jruby.runtime.callsite.CachingCallSite.callBlock(CachingCallSite.java:144)
        at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:148)
        at org.jruby.RubyClass.newInstance(RubyClass.java:822)
        at org.jruby.RubyClass$i$newInstance.call(RubyClass$i$newInstance.gen:65535)
        at org.jruby.internal.runtime.methods.JavaMethod$JavaMethodZeroOrNBlock.call(JavaMethod.java:249)
        at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:292)
        at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:135)
        at home.alex.hbase_minus_1_dot_1_dot_5.bin.$_dot_dot_.bin.hirb.__file__(/home/alex/hbase-1.1.5/bin/../bin/hirb.rb:118)
        at home.alex.hbase_minus_1_dot_1_dot_5.bin.$_dot_dot_.bin.hirb.load(/home/alex/hbase-1.1.5/bin/../bin/hirb.rb)
        at org.jruby.Ruby.runScript(Ruby.java:697)
        at org.jruby.Ruby.runScript(Ruby.java:690)
        at org.jruby.Ruby.runNormally(Ruby.java:597)
        at org.jruby.Ruby.runFromMain(Ruby.java:446)
        at org.jruby.Main.doRunFromMain(Main.java:369)
        at org.jruby.Main.internalRun(Main.java:258)
        at org.jruby.Main.run(Main.java:224)
        at org.jruby.Main.run(Main.java:208)
        at org.jruby.Main.main(Main.java:188)
HBase Shell; enter 'help<RETURN>' for list of supported commands.
Type "exit<RETURN>" to leave the HBase Shell
Version 1.1.5, r239b80456118175b340b2e562a5568b5c744252e, Sun May  8 20:29:26 PDT 2016

hbase(main):001:0>

终端中访问json文件的最后一个元素并查看属性 }, "source": "<a href=\"http://twitter.com/download/android\" rel=\"nofollow\">Twitter for Android</a>", "text": "RT @kosaqsi_tweets: Ah ah..!!!", "truncated": false, "user": { "contributors_enabled": false, "created_at": "Tue May 06 04:48:07 +0000 2014", "default_profile": true, "default_profile_image": false, "description": "", "entities": { "description": { "urls": [] } }, "favourites_count": 2147, "follow_request_sent": false, "followers_count": 72, "following": false, "friends_count": 207, "geo_enabled": true, "has_extended_profile": false, "id": 2479274491, "id_str": "2479274491", "is_translation_enabled": false, "is_translator": false, "lang": "en", "listed_count": 1, "location": "Singapore", "name": "karthikeyan vedalam", "notifications": false, "profile_background_color": "C0DEED", "profile_background_image_url": "http://abs.twimg.com/images/themes/theme1/bg.png", "profile_background_image_url_https": "https://abs.twimg.com/images/themes/theme1/bg.png", "profile_background_tile": false, "profile_banner_url": "https://pbs.twimg.com/profile_banners/2479274491/1453298552", "profile_image_url": "http://pbs.twimg.com/profile_images/748055063625605120/rByPUFsn_normal.jpg", "profile_image_url_https": "https://pbs.twimg.com/profile_images/748055063625605120/rByPUFsn_normal.jpg", "profile_link_color": "0084B4", "profile_sidebar_border_color": "C0DEED", "profile_sidebar_fill_color": "DDEEF6", "profile_text_color": "333333", "profile_use_background_image": true, "protected": false, "screen_name": "k84362172", "statuses_count": 1521, "time_zone": null, "url": null, "utc_offset": null, "verified": false } } ] 的值的正确命令是什么？

1 个答案:

答案 0 :(得分：0)

application.css.scss命令可能是您的朋友。

紧要关头：

jq

根据您的JSON结构，它将是一个稍长的路径。可能类似于：

jq .user.geo_enabled

（其中＆＃39;父母＆＃39;以上是＆＃39;以上＆＃39;您的用户密钥）。

相关问题
最新问题