Tag Archives: java

io.lettuce.core.RedisCommandExecutionException: errorCode:50010048

io.lettuce.core.RedisCommandExecutionException: error Code:50010048

Caused by: io.lettuce.core.RedisCommandExecutionException: errorCode:50010048
	at io.lettuce.core.ExceptionFactory.createExecutionException(ExceptionFactory.java:135)
	at io.lettuce.core.ExceptionFactory.createExecutionException(ExceptionFactory.java:108)
	at io.lettuce.core.protocol.AsyncCommand.completeResult(AsyncCommand.java:120)
	at io.lettuce.core.protocol.AsyncCommand.complete(AsyncCommand.java:111)
	at io.lettuce.core.protocol.CommandWrapper.complete(CommandWrapper.java:59)
	at io.lettuce.core.protocol.CommandHandler.complete(CommandHandler.java:654)
	at io.lettuce.core.protocol.CommandHandler.decode(CommandHandler.java:614)
	at io.lettuce.core.protocol.CommandHandler.channelRead(CommandHandler.java:565)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:719)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:655)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:581)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
	... 1 common frames omitted

An error is reported when calling rediscache. Clean(). The reason may be that redis does not support related commands, such as keys.

org.yaml.snakeyaml.error.YAMLException: java.nio.charset.MalformedInputException: Input length = 1

“C:\Program Files\Java\jdk1.8.0_152\bin\java.exe” -XX:TieredStopAtLevel=1 -noverify -Dspring.output.ansi.enabled=always -Dcom.sun.management.jmxremote -Dspring.jmx.enabled=true -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabled=true “-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA 2020.2\lib\idea_rt.jar=13065:C:\Program Files\JetBrains\IntelliJ IDEA 2020.2\bin” -Dfile.encoding=UTF-8 -classpath “C:\Program Files\Java\jdk1.8.0_152\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_152\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_152\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_152\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_152\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_152\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_152\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_152\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_152\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_152\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_152\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_152\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_152\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_152\jre\lib\ext\zipfs.jar;C:\Program Files\Java\jdk1.8.0_152\jre\lib\javaws.jar;C:\Program Files\Java\jdk1.8.0_152\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_152\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_152\jre\lib\jfxswt.jar;C:\Program Files\Java\jdk1.8.0_152\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_152\jre\lib\management-agent.jar;C:\Program Files\Java\jdk1.8.0_152\jre\lib\plugin.jar;C:\Program Files\Java\jdk1.8.0_152\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_152\jre\lib\rt.jar;D:\study\Spring\Springboot\target\classes;D:\JavaEE\maven\repository\org\springframework\boot\spring-boot-starter-web\2.5.3\spring-boot-starter-web-2.5.3.jar;D:\JavaEE\maven\repository\org\springframework\boot\spring-boot-starter\2.5.3\spring-boot-starter-2.5.3.jar;D:\JavaEE\maven\repository\org\springframework\boot\spring-boot\2.5.3\spring-boot-2.5.3.jar;D:\JavaEE\maven\repository\org\springframework\boot\spring-boot-autoconfigure\2.5.3\spring-boot-autoconfigure-2.5.3.jar;D:\JavaEE\maven\repository\org\springframework\boot\spring-boot-starter-logging\2.5.3\spring-boot-starter-logging-2.5.3.jar;D:\JavaEE\maven\repository\ch\qos\logback\logback-classic\1.2.4\logback-classic-1.2.4.jar;D:\JavaEE\maven\repository\ch\qos\logback\logback-core\1.2.4\logback-core-1.2.4.jar;D:\JavaEE\maven\repository\org\slf4j\slf4j-api\1.7.32\slf4j-api-1.7.32.jar;D:\JavaEE\maven\repository\org\apache\logging\log4j\log4j-to-slf4j\2.14.1\log4j-to-slf4j-2.14.1.jar;D:\JavaEE\maven\repository\org\apache\logging\log4j\log4j-api\2.14.1\log4j-api-2.14.1.jar;D:\JavaEE\maven\repository\org\slf4j\jul-to-slf4j\1.7.32\jul-to-slf4j-1.7.32.jar;D:\JavaEE\maven\repository\jakarta\annotation\jakarta.annotation-api\1.3.5\jakarta.annotation-api-1.3.5.jar;D:\JavaEE\maven\repository\org\springframework\spring-core\5.3.9\spring-core-5.3.9.jar;D:\JavaEE\maven\repository\org\springframework\spring-jcl\5.3.9\spring-jcl-5.3.9.jar;D:\JavaEE\maven\repository\org\yaml\snakeyaml\1.28\snakeyaml-1.28.jar;D:\JavaEE\maven\repository\org\springframework\boot\spring-boot-starter-json\2.5.3\spring-boot-starter-json-2.5.3.jar;D:\JavaEE\maven\repository\com\fasterxml\jackson\core\jackson-databind\2.12.4\jackson-databind-2.12.4.jar;D:\JavaEE\maven\repository\com\fasterxml\jackson\core\jackson-annotations\2.12.4\jackson-annotations-2.12.4.jar;D:\JavaEE\maven\repository\com\fasterxml\jackson\core\jackson-core\2.12.4\jackson-core-2.12.4.jar;D:\JavaEE\maven\repository\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.12.4\jackson-datatype-jdk8-2.12.4.jar;D:\JavaEE\maven\repository\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.12.4\jackson-datatype-jsr310-2.12.4.jar;D:\JavaEE\maven\repository\com\fasterxml\jackson\module\jackson-module-parameter-names\2.12.4\jackson-module-parameter-names-2.12.4.jar;D:\JavaEE\maven\repository\org\springframework\boot\spring-boot-starter-tomcat\2.5.3\spring-boot-starter-tomcat-2.5.3.jar;D:\JavaEE\maven\repository\org\apache\tomcat\embed\tomcat-embed-core\9.0.50\tomcat-embed-core-9.0.50.jar;D:\JavaEE\maven\repository\org\apache\tomcat\embed\tomcat-embed-el\9.0.50\tomcat-embed-el-9.0.50.jar;D:\JavaEE\maven\repository\org\apache\tomcat\embed\tomcat-embed-websocket\9.0.50\tomcat-embed-websocket-9.0.50.jar;D:\JavaEE\maven\repository\org\springframework\spring-web\5.3.9\spring-web-5.3.9.jar;D:\JavaEE\maven\repository\org\springframework\spring-beans\5.3.9\spring-beans-5.3.9.jar;D:\JavaEE\maven\repository\org\springframework\spring-webmvc\5.3.9\spring-webmvc-5.3.9.jar;D:\JavaEE\maven\repository\org\springframework\spring-aop\5.3.9\spring-aop-5.3.9.jar;D:\JavaEE\maven\repository\org\springframework\spring-context\5.3.9\spring-context-5.3.9.jar;D:\JavaEE\maven\repository\org\springframework\spring-expression\5.3.9\spring-expression-5.3.9.jar;D:\JavaEE\maven\repository\com\alibaba\druid\1.2.6\druid-1.2.6.jar;D:\JavaEE\maven\repository\org\springframework\boot\spring-boot-configuration-processor\2.5.3\spring-boot-configuration-processor-2.5.3.jar;D:\JavaEE\maven\repository\org\projectlombok\lombok\1.18.20\lombok-1.18.20.jar” com.it.Application
21:47:30.987 [main] ERROR org.springframework.boot.SpringApplication – Application run failed
org.yaml.snakeyaml.error.YAMLException: java.nio.charset.MalformedInputException: Input length = 1
    at org.yaml.snakeyaml.reader.StreamReader.update(StreamReader.java:218)
    at org.yaml.snakeyaml.reader.StreamReader.ensureEnoughData(StreamReader.java:176)
    at org.yaml.snakeyaml.reader.StreamReader.ensureEnoughData(StreamReader.java:171)
    at org.yaml.snakeyaml.reader.StreamReader.peek(StreamReader.java:126)
    at org.yaml.snakeyaml.scanner.ScannerImpl.scanToNextToken(ScannerImpl.java:1198)
    at org.yaml.snakeyaml.scanner.ScannerImpl.fetchMoreTokens(ScannerImpl.java:308)
    at org.yaml.snakeyaml.scanner.ScannerImpl.checkToken(ScannerImpl.java:248)
    at org.yaml.snakeyaml.parser.ParserImpl$ParseImplicitDocumentStart.produce(ParserImpl.java:213)
    at org.yaml.snakeyaml.parser.ParserImpl.peekEvent(ParserImpl.java:165)
    at org.yaml.snakeyaml.parser.ParserImpl.checkEvent(ParserImpl.java:155)
    at org.yaml.snakeyaml.composer.Composer.checkNode(Composer.java:93)
    at org.yaml.snakeyaml.constructor.BaseConstructor.checkData(BaseConstructor.java:124)
    at org.yaml.snakeyaml.Yaml$1.hasNext(Yaml.java:507)
    at org.springframework.beans.factory.config.YamlProcessor.process(YamlProcessor.java:198)
    at org.springframework.beans.factory.config.YamlProcessor.process(YamlProcessor.java:166)
    at org.springframework.boot.env.OriginTrackedYamlLoader.load(OriginTrackedYamlLoader.java:84)
    at org.springframework.boot.env.YamlPropertySourceLoader.load(YamlPropertySourceLoader.java:50)
    at org.springframework.boot.context.config.StandardConfigDataLoader.load(StandardConfigDataLoader.java:54)

    at org.springframework.boot.context.config.StandardConfigDataLoader.load(StandardConfigDataLoader.java:36)
    at org.springframework.boot.context.config.ConfigDataLoaders.load(ConfigDataLoaders.java:107)
    at org.springframework.boot.context.config.ConfigDataImporter.load(ConfigDataImporter.java:128)
    at org.springframework.boot.context.config.ConfigDataImporter.resolveAndLoad(ConfigDataImporter.java:86)
    at org.springframework.boot.context.config.ConfigDataEnvironmentContributors.withProcessedImports(ConfigDataEnvironmentContributors.java:121)
    at org.springframework.boot.context.config.ConfigDataEnvironment.processInitial(ConfigDataEnvironment.java:240)
    at org.springframework.boot.context.config.ConfigDataEnvironment.processAndApply(ConfigDataEnvironment.java:227)
    at org.springframework.boot.context.config.ConfigDataEnvironmentPostProcessor.postProcessEnvironment(ConfigDataEnvironmentPostProcessor.java:102)
    at org.springframework.boot.context.config.ConfigDataEnvironmentPostProcessor.postProcessEnvironment(ConfigDataEnvironmentPostProcessor.java:94)
    at org.springframework.boot.env.EnvironmentPostProcessorApplicationListener.onApplicationEnvironmentPreparedEvent(EnvironmentPostProcessorApplicationListener.java:102)
    at org.springframework.boot.env.EnvironmentPostProcessorApplicationListener.onApplicationEvent(EnvironmentPostProcessorApplicationListener.java:87)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:176)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:169)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:143)
    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:131)
    at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:82)
    at org.springframework.boot.SpringApplicationRunListeners.lambda$environmentPrepared$2(SpringApplicationRunListeners.java:63)
    at java.util.ArrayList.forEach(ArrayList.java:1257)
    at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:117)
    at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:111)
    at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:62)
    at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:374)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:332)
    at org.springframework.boot.SpringApplication.run(SpringApplication.j

[JVM] stack overflow error stackoverflowerror [How to Solve]

Stackoverflowerror is an error, not an exception.

Method is placed in the stack space. By default, it is only 512k-1024k. By making recursive calls, you can fill up the stack space.

public class StackOverFlowErrorDemo {
    public static void main(String[] args) {
        // Exception in thread "main" java.lang.StackOverflowError
        stackOverflowError();
    }

    private static void stackOverflowError() {
        stackOverflowError();
    }
}

Java.lang.stackoverflowerror error [How to Solve]

I just started learning Java. If something is wrong, please show mercy
when practicing Maven’s integrated SSM framework, a java.lang.stackoverflowerror error occurs when performing multi condition query. Generally, this error is due to the problem of dead loop or recursion, but I do not use loop and recursion. The error is shown in the figure, It calls a method of servie to find all the data in a table from mapper

examination was found to be a very low-level mistake. I injected it wrong, injected myself into the service, and then invoked my own method, resulting in an overflow error. 
after injecting mapper, it runs successfully

Module not found:Error：Can’t resolve ‘rc-animate/lib/CSSMotionList’ in ‘……’

explain

After the react project is compiled, sometimes the following error will be reported if you enter cnpm start

Add the following code to the package.json file to specify the version

"resolutions": {
  "css-animation": "1.5.0",
  "rc-animate": "2.8.2"
},

 

Add the following configuration in dependencies

"css-animation": "1.5.0",
"rc-animate": "2.8.2",

[Solved] Error: caused by: java.net.bindexception: the address is already in use

Error Message:

08:35:28.542 [main] INFO  o.a.c.h.Http11NioProtocol - [log,173] - Destroying ProtocolHandler ["http-nio-8088"]
08:35:28.545 [main] ERROR o.s.b.SpringApplication - [reportFailure,826] - Application run failed
org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat server
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.start(TomcatWebServer.java:212)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.startWebServer(ServletWebServerApplicationContext.java:296)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:163)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:554)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:405)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215)
at com.ruoyi.InterphoneApplication.main(InterphoneApplication.java:18)
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.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:87)
at org.springframework.boot.loader.Launcher.launch(Launcher.java:50)
at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:51)
Caused by: java.lang.IllegalArgumentException: standardService.connector.startFailed
at org.apache.catalina.core.StandardService.addConnector(StandardService.java:244)
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.addPreviouslyRemovedConnectors(TomcatWebServer.java:265)
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.start(TomcatWebServer.java:196)
... 18 common frames omitted
Caused by: org.apache.catalina.LifecycleException: Protocol handler start failed
at org.apache.catalina.connector.Connector.startInternal(Connector.java:1067)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.StandardService.addConnector(StandardService.java:240)
... 20 common frames omitted
Caused by: java.net.BindException: Address already in use
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:433)
at sun.nio.ch.Net.bind(Net.java:425)
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
at org.apache.tomcat.util.net.NioEndpoint.initServerSocket(NioEndpoint.java:228)
at org.apache.tomcat.util.net.NioEndpoint.bind(NioEndpoint.java:211)
at org.apache.tomcat.util.net.AbstractEndpoint.bindWithCleanup(AbstractEndpoint.java:1159)
at org.apache.tomcat.util.net.AbstractEndpoint.start(AbstractEndpoint.java:1245)
at org.apache.coyote.AbstractProtocol.start(AbstractProtocol.java:603)
at org.apache.catalina.connector.Connector.startInternal(Connector.java:1064)
... 22 common frames omitted
08:35:28.551 [main] INFO  o.q.c.QuartzScheduler - [shutdown,666] - Scheduler RuoyiScheduler_$_yuren1629419725223 shutting down.
08:35:28.552 [main] INFO  o.q.c.QuartzScheduler - [standby,585] - Scheduler RuoyiScheduler_$_yuren1629419725223 paused.
08:35:28.552 [main] INFO  o.q.c.QuartzScheduler - [shutdown,740] - Scheduler RuoyiScheduler_$_yuren1629419725223 shutdown complete.
08:35:28.552 [main] INFO  sys-user - [shutdownAsyncManager,31] - ====Close the background task task thread pool====
08:35:28.553 [main] WARN  o.s.c.a.CommonAnnotationBeanPostProcessor - [postProcessBeforeDestruction,185] - Destroy method on bean with name 'shutdownManager' threw an exception: java.lang.ExceptionInInitializerError
08:35:28.555 [main] INFO  c.a.d.p.DruidDataSource - [close,2043] - {dataSource-1} closing ...
08:35:28.559 [main] INFO  c.a.d.p.DruidDataSource - [close,2116] - {dataSource-1} closed
Exception in thread "Quartz Scheduler [RuoyiScheduler]" org.springframework.scheduling.SchedulingException: Could not start Quartz Scheduler after delay; nested exception is org.quartz.SchedulerException: The Scheduler cannot be restarted after shutdown() has been called.
at org.springframework.scheduling.quartz.SchedulerFactoryBean$1.run(SchedulerFactoryBean.java:754)
Caused by: org.quartz.SchedulerException: The Scheduler cannot be restarted after shutdown() has been called.
at org.quartz.core.QuartzScheduler.start(QuartzScheduler.java:529)
at org.quartz.impl.StdScheduler.start(StdScheduler.java:142)
at org.springframework.scheduling.quartz.SchedulerFactoryBean$1.run(SchedulerFactoryBean.java:751)

 

Reason:
[root@yuren interphone]# ps -ef|grep interphone-admin.jar
root     29204 28182 10 08:34 pts/0    00:00:26 java -jar interphone-admin.jar
It’s already running
java -jar ***.jar When the log comes out, pressing enter doesn’t actually end the process, so starting it again will report this error. After reinstalling jdk, it must not be running anymore, and it must be OK to start the project again.

Solution:
ps -ef｜grep ***.jar to find the process number
Kill the process, then restart the project.

Using java to call Jython, the error URI is not hierarchical 

IllegalArgumentException: URI is not hierarchical] with root cause
java.lang.IllegalArgumentException: URI is not hierarchical
	at java.io.File.<init>(File.java:418)
	at org.python.core.PrePy.getJarFileNameFromURL(PrePy.java:427)
	at org.python.core.PrePy._getJarFileName(PrePy.java:362)
	at org.python.core.PrePy.getJarFileName(PrePy.java:345)
	at org.python.core.PySystemState.doInitialize(PySystemState.java:1195)
	at org.python.core.PySystemState.initialize(PySystemState.java:1130)
	at org.python.core.PySystemState.initialize(PySystemState.java:1085)
	at org.python.core.PySystemState.initialize(PySystemState.java:1080)
	at org.python.core.PySystemState.initialize(PySystemState.java:1075)
	at org.python.core.PySystemState.initialize(PySystemState.java:1070)
	at org.python.core.ThreadStateMapping.getThreadState(ThreadStateMapping.java:56)
	at org.python.core.Py.getThreadState(Py.java:1741)
	at org.python.core.Py.getThreadState(Py.java:1737)
	at org.python.core.Py.getSystemState(Py.java:1757)
	at org.python.util.PythonInterpreter.<init>(PythonInterpreter.java:100)
	at org.python.util.PythonInterpreter.<init>(PythonInterpreter.java:93)
	at org.python.util.PythonInterpreter.<init>(PythonInterpreter.java:70)
	at com.example.kimnara.controller.KafkaProducer.invokPy(KafkaProducer.java:138)
	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.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190)
	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)
	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:878)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:792)

Remote breakpoint discovery through idea
the URL found is as follows: jar: File:/D:/Maven/apache-maven-3.3.9/repository/org/python/jython/2.7.2/jython-2.7.2.jar/ Org/Python/core/prep.class
nesting cannot be used
solution: Jython will be eliminated when Maven is packaged; Just load the external jar package at runtime.

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <layout>ZIP</layout>
                    <excludeGroupIds>
                        org.python
                    </excludeGroupIds>
                </configuration>
            </plugin>
        </plugins>
    </build>


java -Dloader.path=“lib/” -jar kimnara-0.0.1-SNAPSHOT.jar
The jar package placed inside the lib

An error occurred when starting Tomcat in Eclipse: the sub container failed to start

Recently, I used Tomcat in learning java web. Several projects have been created in the early stage, and Tomcat runs normally. Recently, I felt that there were too many projects, which was a hindrance, so I deleted them from the current workspace. Re create a new project. It is found that Tomcat startup fails with an error:

         Critical: the required service components failed to start, so Tomcat cannot be started
         Org.apache.catalina.lifecycleexception: sub container startup failed

  There is a conf configuration folder under the Tomcat installation directory. Open server.xml and there will be & lt; context …….>

  Each time a new project is added to tomcat, an & lt; context ……>, Just delete all the previous ones.

Only delete the context tag, don’t delete & lt/ Host>

Error in idea unit test command line is too long

Question

Recently, I changed the computer and reconfigured the development environment. During unit testing, I found that the idea reported an error

Error running '*******Test.******' 
Command line is too ling. Shorten command line for ******* or also for JUnit default configuration.

Solution

Edit the workspace.xml tag under the project. Idea

<component name=“PropertiesComponent”>

Add next

<property name="dynamic.classpath" value="true" />