Such as the title; It’s strange that Lombok normally generates getter/setter methods, but an error is reported when starting the project
configure idea
Solution:
File – Settings – build, execution, deployment compiler annotation processors (this package was imported from the previous project) – default – check enable annotation processing
Just start it again
@Resource
@Resource is provided by JDK. Non spring is generally used in the
service interface userservice
implementation class serviceimpl userserviceimpl
when in use
@Resource
private UserService userServiceImpl;
Error instantiating class java.lang.Integer with invalid types () or values (). Cause: java.lang.NoSuchMethodException: java.lang.Integer.()
1. Background: when multiple parameter values are passed into the column of collection in mybatis, an error is reported
2. Solution:
an entity class in your one to many relationship. In the corresponding mapper.xml, the parametertype of SQL method must be in the form of map
<select id="getMaskRuleByMaskStrategyId" parameterType="java.util.Map" resultMap="MaskRuleResultWithMaskTypeMap">
select * from t_capaa_maskstrategy_mask_strategy_conf a left join t_capaa_maskstrategy_mask_rule b on a.mask_rule_id = b.id
where mask_strategy_id = #{maskStrategyId,jdbcType=INTEGER}
</select>
Solution:
Be sure to type parametertype as map, otherwise, in the column of the collection tag, you cannot use the format of {K1 = V1, K2 = V2} .
What scenario will encounter this problem?
In general, it can be said that in most cases, if the synthesis of images with text is not involved, the font file may not be used. When this file is needed, we will put our static resource file in the resource directory, and then use the program to read the static resources. This is a normal practice. This is no problem, However, you may find that it is normal to run unit tests without error, and the effect is in line with your expectations. However, when you package and compile and run locally through Java – jar xxx.jar, an error will be reported:
java.awt.FontFormatException: bad table, tag=1111577413
at sun.font.TrueTypeFont.init(TrueTypeFont.java:576)
at sun.font.TrueTypeFont.<init>(TrueTypeFont.java:208)
at sun.font.TrueTypeFont.<init>(TrueTypeFont.java:188)
at sun.font.CFontManager.createFont2D(CFontManager.java:155)
at java.awt.Font.<init>(Font.java:615)
at java.awt.Font.createFont0(Font.java:969)
at java.awt.Font.createFont(Font.java:877)
at utils.PosterUtil.<clinit>(PosterUtil.java:35)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:204)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:87)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1312)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1214)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:557)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1304)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1224)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1304)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1224)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1304)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1224)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:640)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1422)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:893)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226)
at com.vdong.scrm.plugins.PluginsApplication.main(PluginsApplication.java:25)
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:51)
at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:52)
reason
The font library font referenced by the Maven project of the springboot project passes through the Maven filter, which will destroy the binary file format of the font file
Solution:
Add the following configuration in pom.xml file:
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<configuration>
<nonFilteredFileExtensions>
<nonFilteredFileExtension>ttf</nonFilteredFileExtension>
<nonFilteredFileExtension>woff</nonFilteredFileExtension>
<nonFilteredFileExtension>woff2</nonFilteredFileExtension>
</nonFilteredFileExtensions>
</configuration>
</plugin>
</plugins>
</build>
Then use MVN clean install to package and compile again, and then use Java – jar xxx.jar to avoid errors.
Foreword: the Java code startup exception and error report view does not exist, but the view can still be seen in Navicat, but it does not exist when you double-click to open the view
Remedy: (all the following operations are performed in Navicat’s SQL command line)
1. Look for the view in the previous database backup
2. The use command allows us to use the database, the use command format: use ;
3. show create view ;
4. Copy the code shown in the previous step how to create
5. Then use the new database;
6. Clean up the code for creating a view copied in 4, and replace the original database name with the new database name
7. Just run
org.apache.ibatis.executor.ExecutorException: No constructor found in void matching [java.lang.String]
There is no constructor of corresponding type
in mapper,
is written, while in service,
solution:
change this to and modify the returned value of selectuserpermissions
O2oa6.3 reports an error in the idea compilation module
Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.2:compile (default-compile) on project xxxx： Compilation failure
Solution: Change the JDK version of idea to 11 and synchronize the changes in pom.xml
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>11</source>
<target>11</target>
</configuration>
</plugin>
Spring boot error input length = 1 solution
1. Set the encoding format to UTF-8 in idea
The problem is solved. If the problem persists, please re create the yaml file and reconfigure its contents
[error]
Java.lang.illegalargumentexception: encrypted array valued parameter binding, but was expecting [java.lang.string (n/a)]
JPA user-defined query statement fills the placeholder of in() with parameter value, and an error is reported
[reason]
The parameter value I passed in is of array type, but the in parameter value of JPA does not support array
[solution]
When setting the in parameter, the passed in parameter must be of type list.
Change the HTML tag to
<html xmlns:th="http://www.thymeleaf.org">
</html>
Or enter idea to cancel detection
Error reporting solution
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'javax.sql.DataSource' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
Mybats plus dependency import error
should import
Today, the following error message will be prompted when you copy the project from the old workspace to the directory of the new workspace:
Request","exception":"org.springframework.http.converter.HttpMessageNotReadableException","message":"JSON parse error: Invalid UTF-8 middle byte 0x3f
The reasons for the above errors are: the JVM parameter does not configure the encoding format and the eclipse workspace does not specify the encoding format.
Solution: specify the JVM encoding format
Open windows -> Preferences-> java-> Installed jres select the local JRE version and click Edit
Add specified encoding format:
-Dfile.encoding=UTF-8
Specify the Workspace encoding format.
window-Preferences-General-workspace-other: UTF-8
