关于【java】的问题- 第1页

Erick Ramirez

Asked: 2022-08-18 21:02:15 +0800 CST

带有 Java 8u331 的 nodetool 返回“URISyntaxException：'索引 7 处的 IPv6 地址格式错误：rmi://[127.0.0.1]:7199'”

2

为什么运行会nodetool返回以下异常？

nodetool: Failed to connect to '127.0.0.1:7199' - \
  URISyntaxException: 'Malformed IPv6 address at index 7: rmi://[127.0.0.1]:7199'.

Cassandra 用户在服务器上升级 Java 后通常会报告此问题。

Hanna Frankowska

Asked: 2022-02-07 11:14:42 +0800 CST

我无法在 mysql 中创建表

1

create table Statistics_tbl with (
SELECT Todo_tbl.person, SUM(Todo_tbl.duration) FROM Todo_tbl JOIN Statistics_tbl 
on Todo_tbl.person = Statistics_tbl.person GROUP BY person;
);

问题是上面的代码不允许我创建一个将连接到另一个表 Todo_tbl 的表 Statistics_tbl。

报告的问题是：

"')' 在这个位置无效。期待 EOF、ALTER、ANALYZE、BEGIN"

"'(' 在这个位置无效。需要一个标识符。

见小提琴

Hanna Frankowska

Asked: 2022-02-07 10:15:10 +0800 CST

如何在 mysql 中连接两个表，以便每当我将数据添加到表 1 时，表 2 也会更新？

1

这是创建我的第一个表的代码

create table Todo_tbl (
id INT auto_increment,
person VARCHAR(45) ,
task VARCHAR(45) ,
duration INT(4),
deadline_day VARCHAR(2),
deadline_month VARCHAR(2),

PRIMARY KEY(id)
)ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=latin1;

insert into Todo_tbl values(1,'John', 'dust the floors', 40,04,03);
insert into Todo_tbl values(2,'Matt', 'do the dishes', 15,02,02);
insert into Todo_tbl values(3,'Mary', 'dusting', 40,03,02);
insert into Todo_tbl values(4,'Chloe', 'cleaning the windows', 75,04,05);
insert into Todo_tbl values(5,'John', 'wash the floors', 60,03,03);
insert into Todo_tbl values(6,'Bridget', 'take out the trash', 15,03,03);
insert into Todo_tbl values(7,'Matt', 'do the laundry', 18,02,02);
insert into Todo_tbl values(8,'Bridget', 'water the plants', 15,03,03);

这是我的第二个表的代码：

create table Statistics_tbl (
SELECT person, SUM(duration) as total_duration FROM Todo_tbl GROUP BY person
);

如您所见，表一是基于 Todo_tbl 中的数据构建的。问题是每当我向 Todo_tbl 添加数据时，Statistics_tbl 中的值都不会改变。如何连接这两个表，以便每当我向 Todo_tbl 输入新数据时，Statistics_tbl 会自动做出反应？

Hanna Frankowska

Asked: 2022-02-07 09:28:51 +0800 CST

每当数据添加到另一个表时，如何自动更新表？

0

我在 MySQL 中创建了两个表。一个 ( Todo_tbl) 保存数据，而另一个 ( Statistics_tbl) 保存其中一个变量的总和Todo_tbl。

遵循这些表的定义：

create table Todo_tbl (
id INT auto_increment,
person VARCHAR(45) ,
task VARCHAR(45) ,
duration INT(4),
deadline_day VARCHAR(2),
deadline_month VARCHAR(2),
PRIMARY KEY(id)
)ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=latin1;

insert into Todo_tbl values(1,'John', 'dust the floors', 40,04,03);
insert into Todo_tbl values(2,'Matt', 'do the dishes', 15,02,02);
insert into Todo_tbl values(3,'Mary', 'dusting', 40,03,02);
insert into Todo_tbl values(4,'Chloe', 'cleaning the windows', 75,04,05);
insert into Todo_tbl values(5,'John', 'wash the floors', 60,03,03);
insert into Todo_tbl values(6,'Bridget', 'take out the trash', 15,03,03);
insert into Todo_tbl values(7,'Matt', 'do the laundry', 18,02,02);
insert into Todo_tbl values(8,'Bridget', 'water the plants', 15,03,03);

select * from Todo_tbl;


create table Statistics_tbl (
SELECT person, SUM(duration) as total_duration FROM Todo_tbl GROUP BY person
);

select * from Statistics_tbl;

问题是每当我将新数据添加Todo_tbl到Statistics_tbl.

有什么办法可以连接两张表，这样当一张表发生变化时，另一张表也会响应？

Oiale

Asked: 2019-03-10 11:41:26 +0800 CST

使用Java存储过程时的陷阱

1

最近我在做一个项目，我认为可以通过使用Java 存储过程（更准确地说是一些接收/发送电子邮件包）来解决。

一段时间后，我发现我公司的数据库中的 Java 类和 Java 存储过程的数量非常少。我问过 DBA，他说禁止使用 Java 存储过程，因为“它很容易让服务器宕机”。

如果有人可以解释我，我将不胜感激：使用使用外部包的 Java 存储过程真的很危险吗？有什么陷阱吗？使用 Java 存储过程不是一种常见的做法吗？

Robbi Nespu

Asked: 2019-01-21 00:07:27 +0800 CST

还原或重置 Oracle 数据库（无闪回功能）

0

我在跑步

Oracle Database 11g Release 11.2.0.4.0 - 64bit Production

好像不是企业版，所以无法使用闪回功能

SQL> ALTER DATABASE FLASHBACK ON;
ALTER DATABASE FLASHBACK ON
*
ERROR at line 1:
ORA-00439: feature not enabled: Flashback Database

SQL> SELECT flashback_on, log_mode FROM v$database;
FLASHBACK_ON |LOG_MODE     
-------------|-------------
NO           |NOARCHIVELOG

如您所见，我的数据库正在以 NOARCHIVELOG 模式运行，我的文件系统是 ext3

我必须对我的系统和另一个供应商进行 CRUD 测试。之后我想恢复到“还原点”状态（测试前）。简而言之，我不想将测试数据保存在我的数据库中。

这里有讨论，但这是使用闪回功能。但是我的情况呢？

有适合我的解决方案吗？

Basil Bourque

Asked: 2018-12-07 12:58:45 +0800 CST

在连接之间保持 H2 内存数据库

4

我在 Java 中使用以下代码创建并使用 H2 内存数据库（不写入存储）进行演示和快速测试：

 Connection conn = DriverManager.getConnection( "jdbc:h2:mem:example_db" ) ;

这是第一次工作，但随后数据库似乎消失了，无法进行进一步的工作。随着时间的推移，如何使用相同的内存数据库？

JeanValjean

Asked: 2018-11-09 03:45:38 +0800 CST

PostgreSQL：PreparedStatement 执行设置模式命令

1

我需要在 Java 应用程序中执行一条SET schema ?语句，其中占位符被调用者在运行时提供的值替换。

我以为我可以PreparedStatement用来克服潜在的 SQL 注入，但是如果我尝试执行准备好的语句，我会收到一条PSQLExceptionwith 消息

ERROR: syntax error at or near "$1"  Position: 18

如果我通过执行以下操作连接架构名称来执行 SQL：

public void executeSetSchema(Connection con, String schema){
  try{
     Statement stmt = con.createStatement();
     stmt.execute("SET SCHEMA '" + schema + "'");

  } catch(Exception){}
}

然后一切都按预期工作。

显然，所有最新版本的 PostgreSQL 都会发生这种情况

为什么我不能使用 PreparedStatement，我应该怎么做才能防止 SQL 注入？

AngocA

Asked: 2018-07-11 14:50:39 +0800 CST

从 Db2 服务器检查客户端中的 Java 驱动程序版本

3

我有一个 Db2 数据库，它被不同服务器中的许多应用程序使用。我想从 Db2 服务器检查不同客户端应用程序中使用的 Java 驱动程序是否是最新的。

有什么方法可以从 Db2 服务器检查 java 驱动程序客户端的版本吗？我尝试了以下方法但没有成功：

db2 list application show detail
db2 "SELECT *  FROM TABLE(MON_GET_CONNECTION(cast(NULL as bigint), -2)) AS t"

在最后一个命令中，该CLIENT_PRDID列可能有一些这样的信息，但它只显示：JCC04110而且我不知道它是什么意思。

Nae

Asked: 2018-02-20 23:07:38 +0800 CST

找不到错误 [XulParser] 处理程序：W?NDOW

-1

PDI(spoon.bat) 在启动时崩溃。这是 /logs/spoon.log：

09:59:04,793 INFO  [KarafBoot] Checking to see if org.pentaho.clean.karaf.cache is enabled
09:59:08,932 INFO  [KarafInstance] 
*******************************************************************************
*** Karaf Instance Number: 1 at f:\user\pdi-ce-8.0.0.0-28\data-integration\ ***
***   .\system\karaf\caches\spoon\data-1                                    ***
*** FastBin Provider Port:52901                                             ***
*** Karaf Port:8802                                                         ***
*** OSGI Service Port:9051                                                  ***
*******************************************************************************
?ub 20, 2018 9:59:09 AM org.apache.karaf.main.Main$KarafLockCallback lockAquired
INFO: Lock acquired. Setting startlevel to 100
2018-02-20 09:59:14.928:INFO:oejs.Server:jetty-8.1.15.v20140411
2018-02-20 09:59:15.055:INFO:oejs.AbstractConnector:Started [email protected]:9051
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.blueprint.NamespaceHandlerRegisterer register
INFO: Registered blueprint namespace handler for http://cxf.apache.org/blueprint/core
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.blueprint.NamespaceHandlerRegisterer register
INFO: Registered blueprint namespace handler for http://cxf.apache.org/configuration/beans
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.blueprint.NamespaceHandlerRegisterer register
INFO: Registered blueprint namespace handler for http://cxf.apache.org/configuration/parameterized-types
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.blueprint.NamespaceHandlerRegisterer register
INFO: Registered blueprint namespace handler for http://cxf.apache.org/configuration/security
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.blueprint.NamespaceHandlerRegisterer register
INFO: Registered blueprint namespace handler for http://schemas.xmlsoap.org/wsdl/
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.blueprint.NamespaceHandlerRegisterer register
INFO: Registered blueprint namespace handler for http://www.w3.org/2005/08/addressing
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.blueprint.NamespaceHandlerRegisterer register
INFO: Registered blueprint namespace handler for http://schemas.xmlsoap.org/ws/2004/08/addressing
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.osgi.CXFExtensionBundleListener addExtensions
INFO: Adding the extensions from bundle org.apache.cxf.cxf-rt-management (171) [org.apache.cxf.management.InstrumentationManager]
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.osgi.CXFExtensionBundleListener addExtensions
INFO: Adding the extensions from bundle org.apache.cxf.cxf-rt-wsdl (174) [org.apache.cxf.wsdl.WSDLManager]
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.osgi.CXFExtensionBundleListener addExtensions
INFO: Adding the extensions from bundle org.apache.cxf.cxf-rt-bindings-xml (176) [org.apache.cxf.binding.xml.XMLBindingFactory, org.apache.cxf.binding.xml.wsdl11.XMLWSDLExtensionLoader]
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.osgi.CXFExtensionBundleListener addExtensions
INFO: Adding the extensions from bundle org.apache.cxf.cxf-rt-bindings-soap (177) [org.apache.cxf.binding.soap.SoapBindingFactory, org.apache.cxf.binding.soap.SoapTransportFactory]
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.blueprint.NamespaceHandlerRegisterer register
INFO: Registered blueprint namespace handler for http://cxf.apache.org/blueprint/bindings/soap
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.osgi.CXFExtensionBundleListener addExtensions
INFO: Adding the extensions from bundle org.apache.cxf.cxf-rt-ws-policy (195) [org.apache.cxf.ws.policy.PolicyEngine, org.apache.cxf.policy.PolicyDataEngine, org.apache.cxf.ws.policy.AssertionBuilderRegistry, org.apache.cxf.ws.policy.PolicyInterceptorProviderRegistry, org.apache.cxf.ws.policy.PolicyBuilder, org.apache.cxf.ws.policy.PolicyAnnotationListener, org.apache.cxf.ws.policy.attachment.ServiceModelPolicyProvider, org.apache.cxf.ws.policy.attachment.external.DomainExpressionBuilderRegistry, org.apache.cxf.ws.policy.attachment.external.EndpointReferenceDomainExpressionBuilder, org.apache.cxf.ws.policy.attachment.external.URIDomainExpressionBuilder, org.apache.cxf.ws.policy.attachment.wsdl11.Wsdl11AttachmentPolicyProvider, org.apache.cxf.ws.policy.mtom.MTOMAssertionBuilder, org.apache.cxf.ws.policy.mtom.MTOMPolicyInterceptorProvider]
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.osgi.CXFExtensionBundleListener addExtensions
INFO: Adding the extensions from bundle org.apache.cxf.cxf-rt-transports-http (178) [org.apache.cxf.transport.http.HTTPTransportFactory, org.apache.cxf.transport.http.HTTPWSDLExtensionLoader, org.apache.cxf.transport.http.policy.HTTPClientAssertionBuilder, org.apache.cxf.transport.http.policy.HTTPServerAssertionBuilder, org.apache.cxf.transport.http.policy.NoOpPolicyInterceptorProvider]
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.blueprint.NamespaceHandlerRegisterer register
INFO: Registered blueprint namespace handler for http://cxf.apache.org/transports/http/configuration
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.blueprint.NamespaceHandlerRegisterer register
INFO: Registered blueprint namespace handler for http://cxf.apache.org/blueprint/simple
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.osgi.CXFExtensionBundleListener addExtensions
INFO: Adding the extensions from bundle org.apache.cxf.cxf-rt-frontend-jaxws (180) [org.apache.cxf.jaxws.context.WebServiceContextResourceResolver]
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.blueprint.NamespaceHandlerRegisterer register
INFO: Registered blueprint namespace handler for http://cxf.apache.org/blueprint/jaxws
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.blueprint.NamespaceHandlerRegisterer register
INFO: Registered blueprint namespace handler for http://cxf.apache.org/blueprint/jaxrs
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.blueprint.NamespaceHandlerRegisterer register
INFO: Registered blueprint namespace handler for http://cxf.apache.org/blueprint/jaxrs-client
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.blueprint.NamespaceHandlerRegisterer register
INFO: Registered blueprint namespace handler for http://cxf.apache.org/binding/coloc
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.osgi.CXFExtensionBundleListener addExtensions
INFO: Adding the extensions from bundle org.apache.cxf.cxf-rt-transports-local (191) [org.apache.cxf.transport.local.LocalTransportFactory]
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.osgi.CXFExtensionBundleListener addExtensions
INFO: Adding the extensions from bundle org.apache.cxf.cxf-rt-bindings-object (192) [org.apache.cxf.binding.object.ObjectBindingFactory]
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.blueprint.NamespaceHandlerRegisterer register
INFO: Registered blueprint namespace handler for http://cxf.apache.org/blueprint/binding/object
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.blueprint.NamespaceHandlerRegisterer register
INFO: Registered blueprint namespace handler for http://cxf.apache.org/policy
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.blueprint.NamespaceHandlerRegisterer register
INFO: Registered blueprint namespace handler for http://www.w3.org/ns/ws-policy
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.blueprint.NamespaceHandlerRegisterer register
INFO: Registered blueprint namespace handler for http://www.w3.org/2006/07/ws-policy
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.blueprint.NamespaceHandlerRegisterer register
INFO: Registered blueprint namespace handler for http://schemas.xmlsoap.org/ws/2004/09/policy
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.blueprint.NamespaceHandlerRegisterer register
INFO: Registered blueprint namespace handler for http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.blueprint.NamespaceHandlerRegisterer register
INFO: Registered blueprint namespace handler for http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.blueprint.NamespaceHandlerRegisterer register
INFO: Registered blueprint namespace handler for http://www.w3.org/2000/09/xmldsig#
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.blueprint.NamespaceHandlerRegisterer register
INFO: Registered blueprint namespace handler for http://docs.oasis-open.org/ws-sx/ws-securitypolicy/200702
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.osgi.CXFExtensionBundleListener addExtensions
INFO: Adding the extensions from bundle org.apache.cxf.cxf-rt-ws-addr (212) [org.apache.cxf.ws.addressing.policy.AddressingAssertionBuilder, org.apache.cxf.ws.addressing.policy.UsingAddressingAssertionBuilder, org.apache.cxf.ws.addressing.policy.AddressingPolicyInterceptorProvider, org.apache.cxf.ws.addressing.impl.AddressingWSDLExtensionLoader, org.apache.cxf.ws.addressing.WSAddressingFeature$WSAddressingFeatureApplier, org.apache.cxf.ws.addressing.MAPAggregator$MAPAggregatorLoader]
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.blueprint.NamespaceHandlerRegisterer register
INFO: Registered blueprint namespace handler for http://cxf.apache.org/ws/addressing
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.osgi.CXFExtensionBundleListener addExtensions
INFO: Adding the extensions from bundle org.apache.cxf.cxf-rt-ws-security (214) [org.apache.cxf.ws.security.policy.WSSecurityPolicyLoader, org.apache.cxf.ws.security.cache.CacheCleanupListener]
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.osgi.CXFExtensionBundleListener addExtensions
INFO: Adding the extensions from bundle org.apache.cxf.cxf-rt-ws-rm (216) [org.apache.cxf.ws.rm.RMManager, org.apache.cxf.ws.rm.policy.RMPolicyInterceptorProvider, org.apache.cxf.ws.rm.policy.RM10AssertionBuilder, org.apache.cxf.ws.rm.policy.RM12AssertionBuilder, org.apache.cxf.ws.rm.policy.WSRMP12PolicyLoader, org.apache.cxf.ws.rm.policy.MC11PolicyLoader, org.apache.cxf.ws.rm.policy.RSPPolicyLoader]
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.blueprint.NamespaceHandlerRegisterer register
INFO: Registered blueprint namespace handler for http://cxf.apache.org/ws/rm/manager
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.blueprint.NamespaceHandlerRegisterer register
INFO: Registered blueprint namespace handler for http://schemas.xmlsoap.org/ws/2005/02/rm/policy
?ub 20, 2018 9:59:16 AM org.apache.cxf.bus.osgi.CXFExtensionBundleListener addExtensions
INFO: Adding the extensions from bundle org.apache.cxf.cxf-rt-javascript (217) [org.apache.cxf.javascript.JavascriptServerListener]
?ub 20, 2018 9:59:17 AM org.pentaho.caching.impl.PentahoCacheManagerFactory$RegistrationHandler$1 onSuccess
INFO: New Caching Service registered
09:59:17,972 ERROR [KarafCapabilityProvider] No feature found matching id: common-ui-client-config
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/F:/user/pdi-ce-8.0.0.0-28/data-integration/launcher/../lib/slf4j-log4j12-1.7.7.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/f:/user/pdi-ce-8.0.0.0-28/data-integration/plugins/pentaho-big-data-plugin/lib/slf4j-log4j12-1.7.7.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
?ub 20, 2018 9:59:20 AM org.apache.cxf.endpoint.ServerImpl initDestination
INFO: Setting the server's publish address to be /lineage
?ub 20, 2018 9:59:20 AM org.apache.cxf.endpoint.ServerImpl initDestination
INFO: Setting the server's publish address to be /i18n
?ub 20, 2018 9:59:21 AM org.apache.cxf.endpoint.ServerImpl initDestination
INFO: Setting the server's publish address to be /marketplace
?ub 20, 2018 9:59:22 AM org.apache.cxf.endpoint.ServerImpl initDestination
INFO: Setting the server's publish address to be /repositories
?ub 20, 2018 9:59:24 AM org.apache.cxf.endpoint.ServerImpl initDestination
INFO: Setting the server's publish address to be /browser
09:59:30,154 ERROR [XulParser] handler not found: W?NDOW
2018/02/20 09:59:30 - General - ERROR (version 8.0.0.0-28, build 8.0.0.0-28 from 2017-11-05 07.27.50 by buildguy) : Error initializing transformation
2018/02/20 09:59:30 - General - ERROR (version 8.0.0.0-28, build 8.0.0.0-28 from 2017-11-05 07.27.50 by buildguy) : org.pentaho.ui.xul.XulException: java.lang.NullPointerException
2018/02/20 09:59:30 - General -     at org.pentaho.ui.xul.impl.AbstractXulLoader.loadXul(AbstractXulLoader.java:134)
2018/02/20 09:59:30 - General -     at org.pentaho.ui.xul.swt.SwtXulLoader.loadXul(SwtXulLoader.java:128)
2018/02/20 09:59:30 - General -     at org.pentaho.ui.xul.swt.SwtXulLoader.loadXul(SwtXulLoader.java:122)
2018/02/20 09:59:30 - General -     at org.pentaho.ui.xul.impl.AbstractXulLoader.loadXul(AbstractXulLoader.java:238)
2018/02/20 09:59:30 - General -     at org.pentaho.di.ui.spoon.Spoon.init(Spoon.java:850)
2018/02/20 09:59:30 - General -     at org.pentaho.di.ui.spoon.Spoon.createContents(Spoon.java:9209)
2018/02/20 09:59:30 - General -     at org.eclipse.jface.window.Window.create(Window.java:426)
2018/02/20 09:59:30 - General -     at org.eclipse.jface.window.Window.open(Window.java:785)
2018/02/20 09:59:30 - General -     at org.pentaho.di.ui.spoon.Spoon.start(Spoon.java:9240)a
2018/02/20 09:59:30 - General -     at org.pentaho.di.ui.spoon.Spoon.main(Spoon.java:692)
2018/02/20 09:59:30 - General -     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
2018/02/20 09:59:30 - General -     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
2018/02/20 09:59:30 - General -     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
2018/02/20 09:59:30 - General -     at java.lang.reflect.Method.invoke(Method.java:498)
2018/02/20 09:59:30 - General -     at org.pentaho.commons.launcher.Launcher.main(Launcher.java:92)
2018/02/20 09:59:30 - General - Caused by: java.lang.NullPointerException
2018/02/20 09:59:30 - General -     at org.pentaho.ui.xul.impl.XulParser.parseDocument(XulParser.java:92)
2018/02/20 09:59:30 - General -     at org.pentaho.ui.xul.impl.AbstractXulLoader.loadXul(AbstractXulLoader.java:126)
2018/02/20 09:59:30 - General -     ... 14 more
2018/02/20 09:59:30 - General - ERROR (version 8.0.0.0-28, build 8.0.0.0-28 from 2017-11-05 07.27.50 by buildguy) : Error starting Spoon shell
2018/02/20 09:59:30 - General - ERROR (version 8.0.0.0-28, build 8.0.0.0-28 from 2017-11-05 07.27.50 by buildguy) : java.lang.NullPointerException
2018/02/20 09:59:30 - General -     at org.pentaho.di.ui.spoon.Spoon.init(Spoon.java:903)
2018/02/20 09:59:30 - General -     at org.pentaho.di.ui.spoon.Spoon.createContents(Spoon.java:9209)
2018/02/20 09:59:30 - General -     at org.eclipse.jface.window.Window.create(Window.java:426)
2018/02/20 09:59:30 - General -     at org.eclipse.jface.window.Window.open(Window.java:785)
2018/02/20 09:59:30 - General -     at org.pentaho.di.ui.spoon.Spoon.start(Spoon.java:9240)
2018/02/20 09:59:30 - General -     at org.pentaho.di.ui.spoon.Spoon.main(Spoon.java:692)
2018/02/20 09:59:30 - General -     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
2018/02/20 09:59:30 - General -     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
2018/02/20 09:59:30 - General -     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
2018/02/20 09:59:30 - General -     at java.lang.reflect.Method.invoke(Method.java:498)
2018/02/20 09:59:30 - General -     at org.pentaho.commons.launcher.Launcher.main(Launcher.java:92)
stopping

我该如何解决这个问题？

带有 Java 8u331 的 nodetool 返回“URISyntaxException：'索引 7 处的 IPv6 地址格式错误：rmi://[127.0.0.1]:7199'”

我无法在 mysql 中创建表

如何在 mysql 中连接两个表，以便每当我将数据添加到表 1 时，表 2 也会更新？

每当数据添加到另一个表时，如何自动更新表？

使用Java存储过程时的陷阱

还原或重置 Oracle 数据库（无闪回功能）

在连接之间保持 H2 内存数据库

PostgreSQL：PreparedStatement 执行设置模式命令

从 Db2 服务器检查客户端中的 Java 驱动程序版本

找不到错误 [XulParser] 处理程序：W?NDOW

连接到 PostgreSQL 服务器：致命：主机没有 pg_hba.conf 条目

如何让sqlplus的输出出现在一行中？

选择具有最大日期或最晚日期的日期

如何列出 PostgreSQL 中的所有模式？

列出指定表的所有列

如何在不修改我自己的 tnsnames.ora 的情况下使用 sqlplus 连接到位于另一台主机上的 Oracle 数据库

你如何mysqldump特定的表？

使用 psql 列出数据库权限

如何从 PostgreSQL 中的选择查询中将值插入表中？

如何使用 psql 列出所有数据库和表？

问题[java](dba)