Error Message:
org.eclipse.team.svn.core.connector.SVNConnectorException: svn: E175002: SSL handshake failed: 'The server selected protocol version TLS10 is not accepted by client preferences [TLS13, TLS12]'
Solution:
Open Eclipse Setting:
Preference->Version Control(Team)->SVN
Check [SVN Connector] on the right tab
Inside the SVN Connector dropdown box to change an option, I am choosing Native Java HL 1.8… The problem was solved.
Causes: accidentally use kill -9 to delete the Podman container running java program process, start the container again with an error
Description of the problem: The problem is because the port is occupied, can not start
Solution: This is because the port is occupied, you can only find out which process is occupying the port through netstat (I am showing the PID/slirp4netns ), and then kill the process number of the occupied port PID with kill -9
Abnormal
The errors reported by JUnit unit test are as follows:
java.lang.Exception: No runnable methods
at org.junit.runners.BlockJUnit4ClassRunner.validateInstanceMethods(BlockJUnit4ClassRunner.java:191)
at org.junit.runners.BlockJUnit4ClassRunner.collectInitializationErrors(BlockJUnit4ClassRunner.java:128)
at org.junit.runners.ParentRunner.validate(ParentRunner.java:416)
at org.junit.runners.ParentRunner.<init>(ParentRunner.java:84)
at org.junit.runners.BlockJUnit4ClassRunner.<init>(BlockJUnit4ClassRunner.java:65)
at org.junit.internal.builders.JUnit4Builder.runnerForClass(JUnit4Builder.java:10)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:33)
at org.junit.internal.requests.FilterRequest.getRunner(FilterRequest.java:36)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:50)
at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:221)
at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54)
error code
import org.junit.Test;
public class Test01 {
@Test
public void test(){
System.out.println("hello world");
}
}
reason
There is no problem with the code @ test annotation is placed on the method, and the @test annotation is also from the package org.junit.Test
Simulate the environment where the problem code occurs: Maven project, with a main/Java/test01.Java and test/Java/test01.Java class
main/java/Test01.java
import org.junit.Test;
public class Test01 {
@Test
public void test01() {
System.out.println("hello world - main/java/Test01.java");
}
}
test/java/Test01.java
public class Test01 {
public static void main(String[] args) {
System.out.println("hello world - test/java/Test01.java");
}
}
To solve the above problems, the following conditions must be met:
1.The same path. It means that the path of the class must be at the same level. If the test/java/Test01.javaand mian/java/Test01.javais the same level, the test/java/Test01.javaand mian/java/hello/Test01.javais not the same level , and there will be no conflict.
2.Same class name. Refer to the same class name in the same path as test/java/Test01.javathe main/java/Test01.javasame path and is both the name of the same class, test/java/Test02.javawith the main/java/Test01.javaconflict although the same path but different class name, it will not happen.
3.Use @Testcomments or not. In the case where the path and class name are the same, if main/java/Test01.javathere is an @Testannotated method in it, and test/java/Test01.javathere must be no @Testannotated method in it, this conflict will occur. If there is an @Testannotated method and the method name is different, it will be reported to use Junit Unit test error “No tests found matching Method test01(Test01) from ClassRequest@5387f9e0” .
After the above conditions are met, the above error will be reported by executing the test method with @test annotation under main/Java .
Solution:
Make their class paths different.
Make their class names different
Under test/Java, there must be methods using @test annotations
In short, it is recommended not to write test methods with @test comments under main/Java, let alone conflict them.
1. Error reported: caused by: java.lang.noclassdeffounderror: org/springframework/JDBC/core/rowmapper
Problem reason: JDBC related dependencies are missing. Add the following dependencies:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
The detailed error reports are as follows:
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2021-11-17 09:54:25.841 ERROR 18008 --- [ main] o.s.boot.SpringApplication : Application run failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.security.oauth2.config.annotation.web.configuration.AuthorizationServerEndpointsConfiguration': Invocation of init method failed; nested exception is java.lang.IllegalStateException: Cannot configure enpdoints
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:160) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:415) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1786) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:897) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879) ~[spring-context-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551) ~[spring-context-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) ~[spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.3.3.RELEASE.jar:2.3.3.RELEASE]
at oauth.QriverAuthServerApplication.main(QriverAuthServerApplication.java:14) [classes/:na]
Caused by: java.lang.IllegalStateException: Cannot configure enpdoints
at org.springframework.security.oauth2.config.annotation.web.configuration.AuthorizationServerEndpointsConfiguration.init(AuthorizationServerEndpointsConfiguration.java:81) ~[spring-security-oauth2-2.3.4.RELEASE.jar:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_281]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_281]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_281]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_281]
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:333) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:157) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
... 19 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'tokenServices' defined in class path resource [oauth/config/AuthorizationServerConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.security.oauth2.provider.token.AuthorizationServerTokenServices]: Factory method 'tokenServices' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jdbcClientDetailsService' defined in class path resource [oauth/config/AuthorizationServerConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.security.oauth2.provider.ClientDetailsService]: Factory method 'jdbcClientDetailsService' threw exception; nested exception is java.lang.NoClassDefFoundError: org/springframework/jdbc/core/RowMapper
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:655) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:483) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1336) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1176) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:556) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.resolveBeanReference(ConfigurationClassEnhancer.java:362) ~[spring-context-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:334) ~[spring-context-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at oauth.config.AuthorizationServerConfig$$EnhancerBySpringCGLIB$$a1ad4a51.tokenServices(<generated>) ~[classes/:na]
at oauth.config.AuthorizationServerConfig.configure(AuthorizationServerConfig.java:89) ~[classes/:na]
at org.springframework.security.oauth2.config.annotation.web.configuration.AuthorizationServerEndpointsConfiguration.init(AuthorizationServerEndpointsConfiguration.java:79) ~[spring-security-oauth2-2.3.4.RELEASE.jar:na]
... 26 common frames omitted
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.security.oauth2.provider.token.AuthorizationServerTokenServices]: Factory method 'tokenServices' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jdbcClientDetailsService' defined in class path resource [oauth/config/AuthorizationServerConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.security.oauth2.provider.ClientDetailsService]: Factory method 'jdbcClientDetailsService' threw exception; nested exception is java.lang.NoClassDefFoundError: org/springframework/jdbc/core/RowMapper
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:650) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
... 40 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jdbcClientDetailsService' defined in class path resource [oauth/config/AuthorizationServerConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.security.oauth2.provider.ClientDetailsService]: Factory method 'jdbcClientDetailsService' threw exception; nested exception is java.lang.NoClassDefFoundError: org/springframework/jdbc/core/RowMapper
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:655) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:483) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1336) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1176) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:556) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.resolveBeanReference(ConfigurationClassEnhancer.java:362) ~[spring-context-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:334) ~[spring-context-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at oauth.config.AuthorizationServerConfig$$EnhancerBySpringCGLIB$$a1ad4a51.jdbcClientDetailsService(<generated>) ~[classes/:na]
at oauth.config.AuthorizationServerConfig.tokenServices(AuthorizationServerConfig.java:50) ~[classes/:na]
at oauth.config.AuthorizationServerConfig$$EnhancerBySpringCGLIB$$a1ad4a51.CGLIB$tokenServices$1(<generated>) ~[classes/:na]
at oauth.config.AuthorizationServerConfig$$EnhancerBySpringCGLIB$$a1ad4a51$$FastClassBySpringCGLIB$$991f75cc.invoke(<generated>) ~[classes/:na]
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244) ~[spring-core-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:331) ~[spring-context-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at oauth.config.AuthorizationServerConfig$$EnhancerBySpringCGLIB$$a1ad4a51.tokenServices(<generated>) ~[classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_281]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_281]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_281]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_281]
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
... 41 common frames omitted
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.security.oauth2.provider.ClientDetailsService]: Factory method 'jdbcClientDetailsService' threw exception; nested exception is java.lang.NoClassDefFoundError: org/springframework/jdbc/core/RowMapper
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:650) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
... 64 common frames omitted
Caused by: java.lang.NoClassDefFoundError: org/springframework/jdbc/core/RowMapper
at java.lang.ClassLoader.defineClass1(Native Method) ~[na:1.8.0_281]
at java.lang.ClassLoader.defineClass(ClassLoader.java:756) ~[na:1.8.0_281]
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) ~[na:1.8.0_281]
at java.net.URLClassLoader.defineClass(URLClassLoader.java:468) ~[na:1.8.0_281]
at java.net.URLClassLoader.access$100(URLClassLoader.java:74) ~[na:1.8.0_281]
at java.net.URLClassLoader$1.run(URLClassLoader.java:369) ~[na:1.8.0_281]
at java.net.URLClassLoader$1.run(URLClassLoader.java:363) ~[na:1.8.0_281]
at java.security.AccessController.doPrivileged(Native Method) ~[na:1.8.0_281]
at java.net.URLClassLoader.findClass(URLClassLoader.java:362) ~[na:1.8.0_281]
at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[na:1.8.0_281]
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355) ~[na:1.8.0_281]
at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[na:1.8.0_281]
at org.springframework.security.oauth2.provider.client.JdbcClientDetailsService.<init>(JdbcClientDetailsService.java:83) ~[spring-security-oauth2-2.3.4.RELEASE.jar:na]
at oauth.config.AuthorizationServerConfig.jdbcClientDetailsService(AuthorizationServerConfig.java:40) ~[classes/:na]
at oauth.config.AuthorizationServerConfig$$EnhancerBySpringCGLIB$$a1ad4a51.CGLIB$jdbcClientDetailsService$0(<generated>) ~[classes/:na]
at oauth.config.AuthorizationServerConfig$$EnhancerBySpringCGLIB$$a1ad4a51$$FastClassBySpringCGLIB$$991f75cc.invoke(<generated>) ~[classes/:na]
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244) ~[spring-core-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:331) ~[spring-context-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at oauth.config.AuthorizationServerConfig$$EnhancerBySpringCGLIB$$a1ad4a51.jdbcClientDetailsService(<generated>) ~[classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_281]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_281]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_281]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_281]
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.2.8.RELEASE.jar:5.2.8.RELEASE]
... 65 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.springframework.jdbc.core.RowMapper
at java.net.URLClassLoader.findClass(URLClassLoader.java:382) ~[na:1.8.0_281]
at java.lang.ClassLoader.loadClass(ClassLoader.java:418) ~[na:1.8.0_281]
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355) ~[na:1.8.0_281]
at java.lang.ClassLoader.loadClass(ClassLoader.java:351) ~[na:1.8.0_281]
... 89 common frames omitted
abnormal
Error: EBUSY: resource busy or locked, stat 'C:\swapfile.sys'
at Object.statSync (node:fs:1536:3)
at D:\NodeJs\node-demo\demo\world.js:7:24
at FSReqCallback.oncomplete (node:fs:188:23) {
errno: -4082,
syscall: 'stat',
code: 'EBUSY',
path: 'C:\\swapfile.sys'
}
Node.js v17.1.0
error code
var fs = require('fs');
var rootPath = 'C:\\';
fs.readdir(rootPath, function (err, files) {
for (var i = 0; i < files.length; i++) {
var p = rootPath + files[i];
var stats = fs.statSync(p);
console.log(rootPath + 'Is it a directory:' + stats.isDirectory())
}
});
Reason
Prompt error: EBUSY: resource busy or locked, stat indicates that the resource file is busy or locked, that is, the C:\swapfile.Sys file. But there is no such file in the C disk directory, even in the hidden file. But it can be found by opening everything software
is a system file.
Solution:
I don’t know how to solve it. The online solution seems to be invalid, so I can only block the file.
Correct code
var fs = require('fs');
var rootPath = 'C:\\';
fs.readdir(rootPath, function (err, files) {
for (var i = 0; i < files.length; i++) {
var p = rootPath + files[i];
// Skip when encountering swapfile.sys file or System Volume Information directory
if (p.endsWith('swapfile.sys') || p.endsWith('System Volume Information')) {
continue;
}
var stats = fs.statSync(p);
console.log(rootPath + 'Is it a directory:' + stats.isDirectory())
}
});
Problem:
keyerror ‘ACC’ is reported when using keras
Reason:
this is a keras version problem. ACC and accuracy are intended to be the same, but different keras versions use different names, so they need to be replaced. val_ So is acc.
Solution:
Print history keyword
Print (history. History. Keys())
change the error part to the printed “K” and “V”“
error code
private static Random RANDOM = new Random();
private static Integer randomOnce(Integer max, Integer min) {
return RANDOM.nextInt(max) % (max - min + 1) + min;
}
Error message
java.lang.IllegalArgumentException: bound must be positive
at java.util.Random.nextInt(Random.java:388)
Solution
private static Random RANDOM = new Random();
private static Integer randomOnce(Integer max, Integer min) {
if (max<=0)
throw new IllegalArgumentException("Random positive must be greater than 0");
return RANDOM.nextInt(max) % (max - min + 1) + min;
}
Article catalog
1. Iteration error of geopandas occurs when executing exe. 2. Fiona cannot be found when executing exe_ Shim3. Cannot find fiona.shema4. Summary by executing exe
First, use pyinstaller – F main.py to package the code into an EXE with a black window. The following are some problems and solutions
1. The iteration error of geopandas occurs when executing exe
The error information is as follows:
(gis_data_process) D:\code\gis_data_processing>main.exe
Traceback (most recent call last):
File "main.py", line 10, in <module>
from gis_data_process import *
File "<frozen importlib._bootstrap>", line 983, in _find_and_load
File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
File "PyInstaller\loader\pyimod03_importers.py", line 546, in exec_module
File "gis_data_process.py", line 7, in <module>
import geopandas
File "<frozen importlib._bootstrap>", line 983, in _find_and_load
File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
File "PyInstaller\loader\pyimod03_importers.py", line 546, in exec_module
File "geopandas\__init__.py", line 17, in <module>
File "<frozen importlib._bootstrap>", line 983, in _find_and_load
File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
File "PyInstaller\loader\pyimod03_importers.py", line 546, in exec_module
File "geopandas\datasets\__init__.py", line 6, in <module>
StopIteration
[24328] Failed to execute script 'main' due to unhandled exception!
The solution is as follows:
2. Execute exe and cannot find Fiona_ shim
The error information is as follows:
(gis_data_process) D:\code\gis_data_processing>main.exe
Unhandled exception in thread started by <bound method GISDataProcess.generate_file_execute of <__main__.GISDataProcess object at 0x0000021A0C5D8DC8>>
Traceback (most recent call last):
File "main.py", line 156, in generate_file_execute
generate_shapefile(file_path, shape_path)
File "gis_data_process.py", line 172, in generate_shapefile
kml_to_shapefile(kml_path, shape_path)
File "gis_data_process.py", line 417, in kml_to_shapefile
geojson_to_shapefile(geojson_path, shape_path)
File "gis_data_process.py", line 220, in geojson_to_shapefile
geometry = geopandas.read_file(geojson_path)
File "geopandas\io\file.py", line 166, in _read_file
File "geopandas\io\file.py", line 81, in _check_fiona
ImportError: the 'read_file' function requires the 'fiona' package, but it is not installed or does not import correctly.
Importing fiona resulted in: No module named 'fiona._shim'
The solution is as follows:
3. Fiona.shema cannot be found by executing exe
The error information is as follows:
(gis_data_process) D:\code\gis_data_processing>main.exe
Unhandled exception in thread started by <bound method GISDataProcess.generate_file_execute of <__main__.GISDataProcess object at 0x00000220B655B5E8>>
Traceback (most recent call last):
File "main.py", line 156, in generate_file_execute
generate_shapefile(file_path, shape_path)
File "gis_data_process.py", line 172, in generate_shapefile
kml_to_shapefile(kml_path, shape_path)
File "gis_data_process.py", line 417, in kml_to_shapefile
geojson_to_shapefile(geojson_path, shape_path)
File "gis_data_process.py", line 220, in geojson_to_shapefile
geometry = geopandas.read_file(geojson_path)
File "geopandas\io\file.py", line 166, in _read_file
File "geopandas\io\file.py", line 81, in _check_fiona
ImportError: the 'read_file' function requires the 'fiona' package, but it is not installed or does not import correctly.
Importing fiona resulted in: No module named 'fiona.schema'
The solution is as follows:
4. Summary
After the above three steps are completed, you can successfully package into exe, but opening exe has a black window. You can change console = true to console = false in the spec file, and then use pyinstaller main.spec to package and generate exe, so that there is no black window
ERROR: JAVA_ HOME is not set and could not be found.
Background
Solution
export JAVA_HOME=/opt/module/jdk1.8
Abnormal
Error reporting for remote submission:
remote: Support for password authentication was removed on August 13, 2021. Please use a personal access token instead.
remote: Please see https://github.blog/2020-12-15-token-authentication-requirements-for-git-operations/ for more information.
fatal: unable to access 'https://github.com/xxx.git/': The requested URL returned error: 403
reason
From August 13, 2021, GitHub no longer supports submitting codes with passwords.
Solution:
Step 1: generate SSH key.
I use a Windows system. Usually, the SSH directory is C: \ users \ administrator \. SSH. If SSH is configured, there will be the following files, where id_ RSA is the private key, ID_ Rsa.pub is the public key.
If SSH is not configured, execute the following command in Git bash to generate SSH key.
ssh-keygen -t rsa -b 4096 -C "Your GitHub Email"
For the options that appear, just default. The first option is the SSH save directory, which can be used by default; In the second option, if you are prompted that SSH already exists, enter y to overwrite and N to not overwrite; The third option is to enter the private key password. If you don’t want to log in with the private key, the private key password is blank. Press enter directly. Press enter twice because the password will be confirmed. After successful generation, you can see the generated key file in the directory.
Step 2: configure to GitHub.
Will ID_ Copy the content in rsa.pub to the newly created SSH keys on GitHub.
Now you can use SSH to clone code and copy SSH links
Git push submission is still unsuccessful
Therefore, it is very important to use SSH link to re clone the warehouse. You need to re clone a remote warehouse to the local.
Just use remote commit again
Reference link: GitHub no longer supports password authentication solution: SSH password free and token login configuration
abnormal
2021-06-22 14:10:56.860 ERROR 17884 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter :
***************************
APPLICATION FAILED TO START
***************************
Description:
Field pet in com.demo.springboot.controller.HelloController required a bean of type 'com.demo.springboot.bean.Pet' that could not be found.
The injection point has the following annotations:
- @org.springframework.beans.factory.annotation.Autowired(required=true)
The following candidates were found but could not be injected:
- Bean method 'pet' in 'MyConfig' not loaded because @ConditionalOnBean (names: user01; SearchStrategy: all) did not find any beans named user01
Action:
Consider revisiting the entries above or defining a bean of type 'com.demo.springboot.bean.Pet' in your configuration.reason
Let’s analyze the printed error log
Let’s look at the hellocontroller class, in which the bean component of pet type is injected, but an error is reported that the injection is not successful
Then, we click the arrow icon on the left to go to the method of injecting this component. We find that it is the pet () method of the myconfig class, where the @ bean annotation is used to inject the pet component.
However, we use @ conditionalonbean (name = user01) annotation above the @ bean annotation, which means that a component named “user01” must exist in the container before the pet component can be injected, otherwise it will not be injected.
solve
Cancel the @ conditionalonbean (name = user01) annotation, or inject a component named “user01”.
But what is the reason for this mistake?Note that the bean component to be used by the @ conditionalonbean annotation condition should be declared above the annotation, not below.
torch.autograd.backward(tensors, grad_tensors=None, retain_graph=None, create_graph=False, grad_variables=None)retain_ graph (bool, optional) – If False, the graph used to compute the grad will be freed. Note that in nearly all cases setting this option to True is not needed and often can be worked around in a much more efficient way.Defaults to the value of create_ graph.create_ graph (bool, optional) – If True, graph of the derivative will be constructed, allowing to compute higher order derivative products.Defaults to False.
retain_ graph = True (when to use it?)
retain_ Graph is a parameter that we can’t use in ordinary times, but we will use it in special cases
Take case 2. For example,
if the code is written like this, the parameter at the beginning of the blog will appear:
loss1.backward()
loss2.backward()Correct code:
loss1.backward(retain_graph=True) #Keep the intermediate arguments after backward.
loss2.backward() # All intermediate variables are freed for the next loop
optimizer.step() # update parametersretain_ The graph parameter is true to keep the intermediate parameter, so that the backward() of two loss will not affect each other.
Supplement: when two losses of two networks need to be backwarded respectively for backhaul: loss1. Backward(), loss1. Backward()
#The case of two networks requires defining separate optimizers for each of the two networks
optimizer1= torch.optim.SGD(net1.parameters(), learning_rate, momentum,weight_decay)
optimizer2= torch.optim.SGD(net2.parameters(), learning_rate, momentum,weight_decay)
.....
#train Part of the loss return processing
loss1 = loss()
loss2 = loss()
optimizer1.zero_grad() #set the grade to zero
loss1.backward(retain_graph=True) #Keep the intermediate parameters after backward.
optimizer1.step()
optimizer2.zero_grad() #set the grade to zero
loss2.backward()
optimizer2.step()scheduler = torch.optim.lr_ Scheduler. Steplr (
appendix:
Step explanation
optimizer.zero_ grad()
Initialize the gradient to zero
(because the derivative of loss of a batch with respect to weight is the sum of the derivative of loss with respect to weight of all samples)
corresponding to d_ weights = [0] * n
output = net(inputs)
The predicted value is obtained by forward propagation
loss = Loss(outputs, labels)
Ask for loss
loss.backward()
Back propagation for gradient
corresponding D_ weights = [d_ weights[j] + (label[k] – output ) * input[k][j] for j in range(n)]
optimizer.step()
Update all parameters
corresponding weights = [weights [k] + alpha * D_ weights[k] for k in range(n)]