The main reason is that the controller is not scanned in the swagger configuration, Here is the solution below:
public Docket createRestApi(){
return new Docket(DocumentationType.SWAGGER_2).apiInfo(apiInfo())
.select()
.apis(RequestHandlerSelectors.withMethodAnnotation(ApiOperation.class))
.build();
}apis(RequestHandlerSelectors.withMethodAnnotation(ApiOperation.class))
Indicates that swagger will scan the interface with @API.
Done!
Reason:
1. @Scheduled annotation mode level is higher than resource injection level, which leads to resource injection failure
2. There is an error in the code of the scheduled task execution (just check your own code carefully)
Solution:
@Component
public class ScheduleConfig implements ApplicationContextAware {
private static ApplicationContext context;
@Override
public void setApplicationContext(@NotNull ApplicationContext applicationContext) throws BeansException {
context = applicationContext;
}
public static <T> T getBean(Class<T> clazz) {
return context != null ?context.getBean(clazz) : null;
}
}Write a Bean to implement the ApplicationContextAware interface and rewrite the setApplicationContextAware method
It can be called in the scheduled task
Error querying database. Cause: org.apache.ibatis.executor.ExecutorException: Executor was closed.
How to Solve SSM Error: Error querying database Cause: org.apache.ibatis.executor. ExecutorException: Executor was closed.
Reason for error reporting
The method of querying Dao layer in impl of service layer is written in return, and sqlSession is closed on it
Solution:
Query the data before closing the resource
Error Description:
Cause:
my idea uses jdk17 by default. In jdk17, many classes are discarded or deleted. You can switch to jdk8
An error occurred during spring integration of Seata. The error is as follows:
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2022-08-09 14:03:16.565 ERROR 15912 --- [ main] o.s.boot.SpringApplication : Application run failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'globalTransactionScanner' defined in class path resource [io/seata/spring/boot/autoconfigure/SeataAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [io.seata.spring.annotation.GlobalTransactionScanner]: Factory method 'globalTransactionScanner' threw exception; nested exception is java.lang.ExceptionInInitializerError
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:658) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:638) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1195) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:213) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.context.support.PostProcessorRegistrationDelegate.registerBeanPostProcessors(PostProcessorRegistrationDelegate.java:258) ~[spring-context-5.3.22.jar:5.3.22]
at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:762) ~[spring-context-5.3.22.jar:5.3.22]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:567) ~[spring-context-5.3.22.jar:5.3.22]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:147) ~[spring-boot-2.7.2.jar:2.7.2]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734) ~[spring-boot-2.7.2.jar:2.7.2]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408) ~[spring-boot-2.7.2.jar:2.7.2]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) ~[spring-boot-2.7.2.jar:2.7.2]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306) ~[spring-boot-2.7.2.jar:2.7.2]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295) ~[spring-boot-2.7.2.jar:2.7.2]
at com.xs.ProtocolApplication.main(ProtocolApplication.java:17) ~[classes/:na]
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [io.seata.spring.annotation.GlobalTransactionScanner]: Factory method 'globalTransactionScanner' threw exception; nested exception is java.lang.ExceptionInInitializerError
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) ~[spring-beans-5.3.22.jar:5.3.22]
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:653) ~[spring-beans-5.3.22.jar:5.3.22]
... 19 common frames omitted
Caused by: java.lang.ExceptionInInitializerError: null
at net.sf.cglib.core.KeyFactory$Generator.generateClass(KeyFactory.java:166) ~[cglib-3.1.jar:na]
at net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25) ~[cglib-3.1.jar:na]
at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:216) ~[cglib-3.1.jar:na]
at net.sf.cglib.core.KeyFactory$Generator.create(KeyFactory.java:144) ~[cglib-3.1.jar:na]
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:116) ~[cglib-3.1.jar:na]
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:108) ~[cglib-3.1.jar:na]
at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:104) ~[cglib-3.1.jar:na]
at net.sf.cglib.proxy.Enhancer.<clinit>(Enhancer.java:69) ~[cglib-3.1.jar:na]
at io.seata.config.ConfigurationCache.proxy(ConfigurationCache.java:104) ~[seata-all-1.5.1.jar:1.5.1]
at io.seata.config.ConfigurationFactory.buildConfiguration(ConfigurationFactory.java:138) ~[seata-all-1.5.1.jar:1.5.1]
at io.seata.config.ConfigurationFactory.getInstance(ConfigurationFactory.java:94) ~[seata-all-1.5.1.jar:1.5.1]
at io.seata.spring.annotation.GlobalTransactionScanner.<init>(GlobalTransactionScanner.java:105) ~[seata-all-1.5.1.jar:1.5.1]
at io.seata.spring.annotation.GlobalTransactionScanner.<init>(GlobalTransactionScanner.java:162) ~[seata-all-1.5.1.jar:1.5.1]
at io.seata.spring.boot.autoconfigure.SeataAutoConfiguration.globalTransactionScanner(SeataAutoConfiguration.java:83) ~[seata-spring-boot-starter-1.5.1.jar:1.5.1]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:568) ~[na:na]
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.3.22.jar:5.3.22]
... 20 common frames omitted
Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make protected final java.lang.Class java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain) throws java.lang.ClassFormatError accessible: module java.base does not "opens java.lang" to unnamed module @710f4dc7
at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354) ~[na:na]
at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297) ~[na:na]
at java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:199) ~[na:na]
at java.base/java.lang.reflect.Method.setAccessible(Method.java:193) ~[na:na]
at net.sf.cglib.core.ReflectUtils$2.run(ReflectUtils.java:56) ~[cglib-3.1.jar:na]
at java.base/java.security.AccessController.doPrivileged(AccessController.java:318) ~[na:na]
at net.sf.cglib.core.ReflectUtils.<clinit>(ReflectUtils.java:46) ~[cglib-3.1.jar:na]
... 39 common frames omitted
2022-08-09 14:03:16.566 WARN 15912 --- [ Thread-1] c.a.n.common.http.HttpClientBeanHolder : [HttpClientBeanHolder] Start destroying common HttpClient
2022-08-09 14:03:16.567 WARN 15912 --- [ Thread-5] c.a.nacos.common.notify.NotifyCenter : [NotifyCenter] Start destroying Publisher
2022-08-09 14:03:16.567 WARN 15912 --- [ Thread-5] c.a.nacos.common.notify.NotifyCenter : [NotifyCenter] Destruction of the end
2022-08-09 14:03:16.567 WARN 15912 --- [ Thread-1] c.a.n.common.http.HttpClientBeanHolder : [HttpClientBeanHolder] Destruction of the end
Solution
Reason: the class globalTransactionScanner cannot be found and cannot be initialized.
Solution: I use JDK 17 in my IDEA. It’s OK to switch to JDK 8.
There are two possible cases of error: Java: compilation failed: internal java compiler error.
1. The JDK version may be inconsistent
Check whether the following three parts are consistent.
Preferences -> Compiler -> Version setting SDK version in Java compiler
File -> Project Structure -> SDK version in project
File -> Project Structure -> Module -> Module SDK version in each module dependencies
2. The memory setting of the compilation environment may be insufficient.
Preferences -> Compiler -> Shared build process heap size
Increase the default memory of 700M.
The following error is reported when using jdbc to connect to a database in IDEA:
Solution:
1. In IDEA, select Run -> Edit Configurations;
2. In the pop-up interface, enter -Duser.name=user in VM option and restart.
****If VM options are not found
* * * * restart operation
File-> Invalidate Caches-> Just restart
The error below occurs when mongodb is started. Check the log file and find:
exception in initAndListen std::exception: listen: Address already in use, terminating，
Possible errors:
1. Your conf file is incorrectly written, format or code, etc
2. Bindip binds both the localhost and the internal and external addresses of the server
Solution: check and write the file format, and pay attention to yaml format. Then, bindip directly accesses 0.0.0.0, allowing all access. It should be OK.
If viewing the log is this error:
Failed to set up listener: SocketException: Address already in use
ps aux | grep mongod
sudo kill -9 {port-number}
After deployment on the server, it is found that many places report 400 error, which has a unified feature of transmitting Chinese to the back-end interface
Solution:
1. configure the Tomcat server transmission encoding format specification:
Edit the tomcat/conf/server.xml file and add the encoding attribute: URIEncoding=”UTF-8″ to the Connector tag
2. Edit the tocmat/bin/catalina.bat file and add the following attribute: set JAVA_OPTS=%JAVA_OPTS% -Dfile.encoding=UTF-8
3. the most important step is to restart through shutdown and startup under the bin directory of Tomcat
Resource compilation failed (Failed to compile values resource file /home/fanbin/AndroidStudioProjects/BookTest/app/build/intermediates/incremental/debug/mergeDebugResources/merged.dir/values/values.xml. ]
Resource registered by this uri is not recognized (Settings | Languages & Frameworks | Schemas and DTDs)
Reason: In color.xml, the color resource does not contain “#”, i.e. #FF000000, which causes this compilation error!
as shown in the figure below, the # number is not added to line 6.
Note: there are other situations that may cause this error.
Problem Description:
The project started well in the morning, but not in the afternoon 😂 What is this situation… At first, the project could not be started because the HTTP resources would be filtered out after Maven version 3.8.1. Later, it was still impossible to change HTTP to HTTPS,
The best way is to modify the Maven version. I changed it to Maven version 3.6.3. After that, I can download the package. However, it didn’t take long before there was another problem. Malformed \uxxxx encoding.
Let’s start with this error report today: malformed \ uxxxx encoding (the problem encountered today has been solved for half an afternoon and the reason has finally been found…)
Solution Summary:
First of all, the solutions are nothing more than the following:
1, first check the project .properties, .yml, pom.xml, logback and other configurations, whether there is a path error in the use of
2, update the maven repository, re-download the jar package
3, delete the path-to-the-library or resolver-status.properties file
In either case, it is recommended to restart the editor. For idea, click the Invalidate Caches/ Restart button to clear the cache and restart the idea
After opening IDEA and updating the project to start.
1, suddenly found build failure reported a strange error: Malformed \uxxxx encoding.
2. The <project> tag in the pom.xml file is also marked in red with the error.
But but but the code in the pom is exactly the same as on master, others are fine, but not their own, some of the import classes in the file will also report an error Can’t find.
Reason: When updating the jar packages that the project depends on, the downloaded jar packages may be incomplete due to network problems.
Solution: Delete the downloaded jar package and download it again.
In fact, it is not necessary to delete and re-download the package in general, so I think there must be a way to find the problematic package. To do accurate deletion
The quick solution is:
# Use the -X parameter to type out the error file information
mvn pakage -X
# Check the log, then delete or change the name of the file with the error to something else
# This will allow you to re-download the wrong fileI solved this problem through method 3
(1) In the . /m2/ folder (modify as you see fit), find path-to-the-library and delete it (if this file is not present, you can simply ignore this step).
(2) In the . /m2/repository (modify according to your situation) folder, search globally for the file: resolver-status.properties, delete all the files found, and recompile.
Solution:
Add the configuration <mvc:message-converters register-defaults=“true”> in mvc:annotation-driven of sprinmvc-servlet.xml.
The codes are as below:
Unified solution to json Chinese messy code problem<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
https://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop
https://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/context
https://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
https://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!--springmvc 统一解决json中文乱码问题-->
<mvc:annotation-driven>
<mvc:message-converters register-defaults="true">
<bean class="org.springframework.http.converter.StringHttpMessageConverter">
<constructor-arg value="UTF-8"/>
</bean>
<bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
<property name="objectMapper">
<bean class="org.springframework.http.converter.json.Jackson2ObjectMapperFactoryBean">
<property name="failOnEmptyBeans" value="false"/>
</bean>
</property>
</bean>
</mvc:message-converters>
</mvc:annotation-driven>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp/"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>1. Problem Description:
When the project is started and the browser opens the swagger document, the following error is always reported, but the document and the program are normal.
java.lang.NumberFormatException: For input string: ""
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65) ~[na:1.8.0_25]
at java.lang.Long.parseLong(Long.java:601) ~[na:1.8.0_25]
at java.lang.Long.valueOf(Long.java:803) ~[na:1.8.0_25]
at io.swagger.models.parameters.AbstractSerializableParameter.getExample(AbstractSerializableParameter.java:412) ~[swagger-models-1.5.20.jar:1.5.20]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_25]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_25]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_25]
at java.lang.reflect.Method.invoke(Method.java:483) ~[na:1.8.0_25]
at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:689) [jackson-databind-2.11.0.jar:2.11.0]
at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:723) [jackson-databind-2.11.0.jar:2.11.0]
at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:166) [jackson-databind-2.11.0.jar:2.11.0]
at com.fasterxml.jackson.databind.ser.impl.IndexedListSerializer.serializeContents(IndexedListSerializer.java:119) [jackson-databind-2.11.0.jar:2.11.0]
at com.fasterxml.jackson.databind.ser.impl.IndexedListSerializer.serialize(IndexedListSerializer.java:79) [jackson-databind-2.11.0.jar:2.11.0]
at com.fasterxml.jackson.databind.ser.impl.IndexedListSerializer.serialize(IndexedListSerializer.java:18) [jackson-databind-2.11.0.jar:2.11.0]
at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:728) [jackson-databind-2.11.0.jar:2.11.0]
at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:723) [jackson-databind-2.11.0.jar:2.11.0]
at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:166) [jackson-databind-2.11.0.jar:2.11.0]
at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:728) [jackson-databind-2.11.0.jar:2.11.0]
at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:723) [jackson-databind-2.11.0.jar:2.11.0]
at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:166) [jackson-databind-2.11.0.jar:2.11.0]
at com.fasterxml.jackson.databind.ser.std.MapSerializer.serializeOptionalFields(MapSerializer.java:786) [jackson-databind-2.11.0.jar:2.11.0]
at com.fasterxml.jackson.databind.ser.std.MapSerializer.serializeWithoutTypeInfo(MapSerializer.java:677) [jackson-databind-2.11.0.jar:2.11.0]
at com.fasterxml.jackson.databind.ser.std.MapSerializer.serialize(MapSerializer.java:637) [jackson-databind-2.11.0.jar:2.11.0]
at com.fasterxml.jackson.databind.ser.std.MapSerializer.serialize(MapSerializer.java:33) [jackson-databind-2.11.0.jar:2.11.0]
at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:728) [jackson-databind-2.11.0.jar:2.11.0]
at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:723) [jackson-databind-2.11.0.jar:2.11.0]
at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:166) [jackson-databind-2.11.0.jar:2.11.0]
at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:480) [jackson-databind-2.11.0.jar:2.11.0]
at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:319) [jackson-databind-2.11.0.jar:2.11.0]
at com.fasterxml.jackson.databind.ObjectMapper._configAndWriteValue(ObjectMapper.java:4374) [jackson-databind-2.11.0.jar:2.11.0]
at com.fasterxml.jackson.databind.ObjectMapper.writeValueAsString(ObjectMapper.java:3629) [jackson-databind-2.11.0.jar:2.11.0]
at springfox.documentation.spring.web.json.JsonSerializer.toJson(JsonSerializer.java:38) [springfox-spring-web-3.0.0.jar:3.0.0]
at springfox.documentation.swagger2.web.Swagger2ControllerWebMvc.getDocumentation(Swagger2ControllerWebMvc.java:106) [springfox-swagger2-3.0.0.jar:3.0.0]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_25]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_25]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_25]
at java.lang.reflect.Method.invoke(Method.java:483) ~[na:1.8.0_25]
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) [spring-web-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) [spring-web-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105) [spring-webmvc-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:879) [spring-webmvc-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793) [spring-webmvc-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) [spring-webmvc-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) [spring-webmvc-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) [spring-webmvc-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) [spring-webmvc-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) [spring-webmvc-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:634) [servlet-api.jar:na]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) [spring-webmvc-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) [servlet-api.jar:na]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) [tomcat-embed-core-9.0.36.jar:9.0.36]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.36.jar:9.0.36]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) [tomcat-embed-websocket-9.0.36.jar:9.0.36]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.36.jar:9.0.36]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.36.jar:9.0.36]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) [spring-web-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.36.jar:9.0.36]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.36.jar:9.0.36]
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) [spring-web-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.36.jar:9.0.36]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.36.jar:9.0.36]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) [spring-web-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) [spring-web-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.36.jar:9.0.36]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.36.jar:9.0.36]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) [tomcat-embed-core-9.0.36.jar:9.0.36]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.36.jar:9.0.36]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) [tomcat-embed-core-9.0.36.jar:9.0.36]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.36.jar:9.0.36]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.36.jar:9.0.36]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.36.jar:9.0.36]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.36.jar:9.0.36]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373) [tomcat-embed-core-9.0.36.jar:9.0.36]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) [tomcat-embed-core-9.0.36.jar:9.0.36]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) [tomcat-embed-core-9.0.36.jar:9.0.36]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1590) [tomcat-embed-core-9.0.36.jar:9.0.36]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.36.jar:9.0.36]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_25]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_25]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.36.jar:9.0.36]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_25]2. Cause of the problem:
1. View error log
2. Tracking problems
3. Breakpoint restore judgment
4. Error code found
5. The core of the problem
There is a problem with the annotation information of the property. The empty string ” cannot be converted to Number.
/**
* Message
*/
@ResponseBody
@ApiOperation(value = "Get order configuration table information based on ID")
@ApiImplicitParams(@ApiImplicitParam(name = "id",value = "int type",dataType = "int",required = true))
@RequestMapping(value = "/info/{id}",method = RequestMethod.GET)
public R info(@PathVariable("id") Integer id){
ApsOrderConfigEntity apsOrderConfig = apsOrderConfigService.getById(id);
return R.ok().put("apsOrderConfig", apsOrderConfig);
}3. Problem solving
1. Remove the annotation directly
/**
* Message
*/
@ResponseBody
@ApiOperation(value = "Get order configuration table information based on ID")
// @ApiImplicitParams(@ApiImplicitParam(name = "id",value = "int type",dataType = "int",required = true))
@RequestMapping(value = "/info/{id}",method = RequestMethod.GET)
public R info(@PathVariable("id") Integer id){
ApsOrderConfigEntity apsOrderConfig = apsOrderConfigService.getById(id);
return R.ok().put("apsOrderConfig", apsOrderConfig);
}2. Add example = "1"
/**
* Message
*/
@ResponseBody
@ApiOperation(value = "Get order configuration table information based on ID")
@ApiImplicitParams(@ApiImplicitParam(name = "id",value = "int type",dataType = "int",required = true,example = "1"))
@RequestMapping(value = "/info/{id}",method = RequestMethod.GET)
public R info(@PathVariable("id") Integer id){
ApsOrderConfigEntity apsOrderConfig = apsOrderConfigService.getById(id);
return R.ok().put("apsOrderConfig", apsOrderConfig);
}