Java 运行Nutch 2时出现连接拒绝错误
我试图在我的系统上运行Nutch 2 crawler,但出现以下错误:Java 运行Nutch 2时出现连接拒绝错误,java,web-crawler,nutch,Java,Web Crawler,Nutch,我试图在我的系统上运行Nutch 2 crawler,但出现以下错误: Exception in thread "main" org.apache.gora.util.GoraException: java.io.IOException: java.sql.SQLTransientConnectionException: java.net.ConnectException: Connection refused at org.apache.gora.store.DataStoreFactory.
Exception in thread "main" org.apache.gora.util.GoraException: java.io.IOException: java.sql.SQLTransientConnectionException: java.net.ConnectException: Connection refused
at org.apache.gora.store.DataStoreFactory.createDataStore(DataStoreFactory.java:167)
at org.apache.gora.store.DataStoreFactory.createDataStore(DataStoreFactory.java:135)
at org.apache.nutch.storage.StorageUtils.createWebStore(StorageUtils.java:69)
at org.apache.nutch.crawl.InjectorJob.run(InjectorJob.java:243)
at org.apache.nutch.crawl.Crawler.runTool(Crawler.java:68)
at org.apache.nutch.crawl.Crawler.run(Crawler.java:136)
at org.apache.nutch.crawl.Crawler.run(Crawler.java:250)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
at org.apache.nutch.crawl.Crawler.main(Crawler.java:257)
Caused by: java.io.IOException: java.sql.SQLTr
ansientConnectionException: java.net.ConnectException: Connection refused
at org.apache.gora.sql.store.SqlStore.getConnection(SqlStore.java:747)
at org.apache.gora.sql.store.SqlStore.initialize(SqlStore.java:160)
at org.apache.gora.store.DataStoreFactory.initializeDataStore(DataStoreFactory.java:102)
at org.apache.gora.store.DataStoreFactory.createDataStore(DataStoreFactory.java:161)
... 8 more
Caused by: java.sql.SQLTransientConnectionException: java.net.ConnectException: Connection refused
at org.hsqldb.jdbc.Util.sqlException(Unknown Source)
at org.hsqldb.jdbc.Util.sqlException(Unknown Source)
at org.hsqldb.jdbc.JDBCConnection.<init>(Unknown Source)
at org.hsqldb.jdbc.JDBCDriver.getConnection(Unknown Source)
at org.hsqldb.jdbc.JDBCDriver.connect(Unknown Source)
at java.sql.DriverManager.getConnection(DriverManager.java:620)
at java.sql.DriverManager.getConnection(DriverManager.java:200)
at org.apache.gora.sql.store.SqlStore.getConnection(SqlStore.java:739)
... 11 more
Caused by: org.hsqldb.HsqlException: java.net.ConnectException: Connection refused
at org.hsqldb.ClientConnection.openConnection(Unknown Source)
at org.hsqldb.ClientConnection.initConnection(Unknown Source)
at org.hsqldb.ClientConnection.<init>(Unknown Source)
... 17 more
Caused by: java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:327)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:193)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:180)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:384)
at java.net.Socket.connect(Socket.java:546)
at java.net.Socket.connect(Socket.java:495)
at java.net.Socket.<init>(Socket.java:392)
at java.net.Socket.<init>(Socket.java:206)
at org.hsqldb.server.HsqlSocketFactory.createSocket(Unknown Source)
... 20 more
线程“main”org.apache.gora.util.GoraException:java.io.IOException:java.sql.SQLTransientConnectionException:java.net.ConnectException:连接被拒绝
位于org.apache.gora.store.DataStoreFactory.createDataStore(DataStoreFactory.java:167)
位于org.apache.gora.store.DataStoreFactory.createDataStore(DataStoreFactory.java:135)
位于org.apache.nutch.storage.StorageUtils.createWebStore(StorageUtils.java:69)
位于org.apache.nutch.crawl.InjectorJob.run(InjectorJob.java:243)
位于org.apache.nutch.crawl.Crawler.runTool(Crawler.java:68)
位于org.apache.nutch.crawl.Crawler.run(Crawler.java:136)
位于org.apache.nutch.crawl.Crawler.run(Crawler.java:250)
位于org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
位于org.apache.nutch.crawl.Crawler.main(Crawler.java:257)
原因:java.io.IOException:java.sql.SQLTr
ansientConnectionException:java.net.ConnectException:连接被拒绝
位于org.apache.gora.sql.store.SqlStore.getConnection(SqlStore.java:747)
位于org.apache.gora.sql.store.SqlStore.initialize(SqlStore.java:160)
位于org.apache.gora.store.DataStoreFactory.initializeDataStore(DataStoreFactory.java:102)
位于org.apache.gora.store.DataStoreFactory.createDataStore(DataStoreFactory.java:161)
... 8个以上
原因:java.sql.SQLTransientConnectionException:java.net.ConnectException:连接被拒绝
位于org.hsqldb.jdbc.Util.sqlException(未知源)
位于org.hsqldb.jdbc.Util.sqlException(未知源)
位于org.hsqldb.jdbc.JDBCConnection。(来源未知)
位于org.hsqldb.jdbc.JDBCDriver.getConnection(未知源)
位于org.hsqldb.jdbc.JDBCDriver.connect(未知源)
位于java.sql.DriverManager.getConnection(DriverManager.java:620)
位于java.sql.DriverManager.getConnection(DriverManager.java:200)
位于org.apache.gora.sql.store.SqlStore.getConnection(SqlStore.java:739)
... 还有11个
原因:org.hsqldb.HsqlException:java.net.ConnectException:连接被拒绝
位于org.hsqldb.ClientConnection.openConnection(未知源)
位于org.hsqldb.ClientConnection.initConnection(未知源)
位于org.hsqldb.ClientConnection。(未知来源)
... 还有17个
原因:java.net.ConnectException:连接被拒绝
位于java.net.PlainSocketImpl.socketConnect(本机方法)
位于java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:327)
位于java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:193)
位于java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:180)
位于java.net.socksocketimpl.connect(socksocketimpl.java:384)
位于java.net.Socket.connect(Socket.java:546)
位于java.net.Socket.connect(Socket.java:495)
位于java.net.Socket(Socket.java:392)
位于java.net.Socket。(Socket.java:206)
位于org.hsqldb.server.HsqlSocketFactory.createSocket(未知源)
... 20多
有什么问题?我的internet连接是直接的。有相同的错误。我忘记了conf/nutch-site.xml上的'configuration'标记:
<configuration>
<property>
<name>storage.data.store.class</name>
<value>org.apache.gora.hbase.store.HBaseStore</value>
<description>Default class for storing data</description>
</property>
</configuration>
storage.data.store.class
org.apache.gora.hbase.store.HBaseStore
用于存储数据的默认类
我也有同样的错误。我从更改了连接URL
<property name="connection.url">jdbc:hsqldb:hsql://localhost</property>
jdbc:hsqldb:hsql://localhost
到
jdbc:hsqldb:mem://localhost
它成功了。您的数据库似乎有问题,我不熟悉Notch,但它在连接数据库而不是网络时遇到了问题。如果需要设置任何DB属性,您是否查看了说明?是否遵循了此处列出的所有说明:有一个DB配置文件conf/gora.properties,但我将其保留为默认值。因为教程中没有提到它!我还检查了链接并执行了所有步骤,但仍然得到了错误。我得到了完全相同的问题,并且认为gora.properties中的默认配置需要SqlStore属性。不幸的是,我不知道如何在Mac中更新它们。
<property name="connection.url">jdbc:hsqldb:mem://localhost</property>