Crypto js Malformed UTF-8 data
Note: If your application is started by jar package, please refer to solution 1; If your application is started by tomcat, please refer to solution 2.
Solution 1: jar package startup configuration
java -jar -Dfile.encoding=utf-8 itemapi-1.0.1.jar
Solution 2: tomat configuration
Set up in Tomcat’s catalina.bat.
set "JAVA_OPTS=%JAVA_OPTS% %LOGGING_CONFIG% -Dfile.encoding=UTF-8"Some students encountered the problem of “Invalid bound statement (not found)” when building the mybatis plus project, it is essentially that the mapper interface and the mapper.xml is not mapped.
In this case, the common problems are as follows:
1, mapper.xml inside the namespace and the actual mapper class path is not consistent.
There is a quick way to detect this is to hold down the ctrl key, and then click the package name inside the namespace, if you can jump to the corresponding class, it means there is no problem, if you use the IDEA is the same way, IDEA package name can be segmented, as long as you can point in are no problem.
2, mapper interface function name and mapper.xml inside the label id is not consistent.
This problem is also very common, the best way is to paste and copy it, so as to ensure that there is no problem.
The first point and 2 points are about spelling errors.
3, the build did not go in, please see if these exist below the target folder, no please rebuild
4. Check whether package scanning is added. I added it to the spring boot startup class.
5. Check whether the configuration file is written incorrectly or not
#Is this place wrongly written?
mapper-locations: classpath:mybatis/mapper/**/*.xml
Mybatis-plus can be configured as an array:
mybatis-plus:
mapper-locations:
- classpath:mybatis/mapper/**/*.xmlOr
mybatis-plus:
mapper-locations: classpath:mybatis/**/*Mapper.xmlNote that the key is mapper-locations and not mapper-locations:
Other configurations:
mybatis-plus:
global-config:
#primary-key-type 0: "Database ID self-incrementing", 1: "User input ID", 2: "Global unique ID (numeric unique ID)", 3: "Global unique ID UUID";
id-type: 0
#field-strategy 0: "Ignore judgment",1: "Non-NULL judgment"),2: "Non-Null judgment"
field-strategy: 0
#hump-underline conversion
db-column-underline: true
#refresh-mapper debugging artifact
refresh-mapper: true
#database capital-underline conversion
#capital-mode: true
#sequence interface implementation class configuration
#key-generator: com.baomidou.springboot.xxx
#logic-delete-configuration (the following 3 configurations)
#logic-delete-value: 0 # logical-delete value (default is 1)
#logic-not-delete-value: 1 # logical-not-delete value (default is 0)
# Custom fill policy interface implementation
#meta-object-handler: com.zhengqing.config.
#custom SQL injector
#sql-injector: com.baomidou.springboot.xxx configuration:
#SQL parsing cache, multi-tenant @SqlParser annotation takes effect when enabled
#sql-parser-cache: true
configuration:
# hump conversion Similar mapping from database column names to Java property hump naming
map-underscore-to-camel-case: true
# Whether to enable caching
cache-enable: false
# If the query contains a column with a null value, MyBatis will not map this field when mapping
#call-setters-on-nulls: true
# 打印sql
log-impl: org.apache.ibatis.logging.stdout.StdOutImplqrcode-error
Project scenario:
QR code generation
Problem description
Hint: Here we describe the problems encountered in the project:
For example, in the process of data transmission, data is lost from time to time, and some data is occasionally lost
The code of data received in the APP:
QrConfig qrConfig = QrConfig.create();
qrConfig.setWidth(500);
qrConfig.setHeight(500);
String encode = Base64.encode(QrCodeUtil.generatePng("loginQRVerify:",qrConfig));
Cause analysis:
Prompt: jar package is missing
Solution:
<!-- https://mvnrepository.com/artifact/com.google.zxing/core -->
<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>core</artifactId>
<version>3.3.0</version>
</dependency>
Error instantiating class bakou.entity.Person with invalid types () or values (). Cause: java.lang.NoSuchMethodException: bakou.entity.Person.<init>()
Reason: Only a parameterized constructor is added to the entity class, no parameterless constructor is provided
Solution: Add a construction method in the entity class without parameters
The essence of the problem: Instantiate the object with a method that uses an uninvolved construct to instantiate the object
The error page is as follows:
org.apache.ibatis.exceptions.PersistenceException:
### Error querying database. Cause: org.apache.ibatis.reflection.ReflectionException: Error instantiating class bakou.entity.Person with invalid types () or values (). Cause: java.lang.NoSuchMethodException: bakou.entity.Person.<init>()
### The error may exist in bakou/dao/PersonDaoMapper.xml
### The error may involve bakou.dao.PersonDao.selectById-Inline
### The error occurred while setting parameters
### SQL: select p.id,name,phone,c.id cid,cardno,address,expire from person p join card c on p.card_id = c.id where p.id = ?;
### Cause: org.apache.ibatis.reflection.ReflectionException: Error instantiating class bakou.entity.Person with invalid types () or values (). Cause: java.lang.NoSuchMethodException: bakou.entity.Person.<init>()
at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:23)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:104)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:95)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:59)
at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:95)
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:40)
at com.sun.proxy.$Proxy5.selectById(Unknown Source)
at bakou.test.TestPersonDao.testPersonDao(TestPersonDao.java:21)
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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69)
at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38)
at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11)
at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35)
at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:235)
at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54)
Caused by: org.apache.ibatis.reflection.ReflectionException: Error instantiating class bakou.entity.Person with invalid types () or values (). Cause: java.lang.NoSuchMethodException: bakou.entity.Person.<init>()
at org.apache.ibatis.reflection.factory.DefaultObjectFactory.instantiateClass(DefaultObjectFactory.java:83)
at org.apache.ibatis.reflection.factory.DefaultObjectFactory.create(DefaultObjectFactory.java:45)
at org.apache.ibatis.reflection.factory.DefaultObjectFactory.create(DefaultObjectFactory.java:38)
at org.apache.ibatis.executor.resultset.FastResultSetHandler.createResultObject(FastResultSetHandler.java:376)
at org.apache.ibatis.executor.resultset.FastResultSetHandler.createResultObject(FastResultSetHandler.java:355)
at org.apache.ibatis.executor.resultset.NestedResultSetHandler.getRowValue(NestedResultSetHandler.java:137)
at org.apache.ibatis.executor.resultset.NestedResultSetHandler.getRowValue(NestedResultSetHandler.java:122)
at org.apache.ibatis.executor.resultset.NestedResultSetHandler.handleRowValues(NestedResultSetHandler.java:108)
at org.apache.ibatis.executor.resultset.NestedResultSetHandler.handleResultSet(NestedResultSetHandler.java:76)
at org.apache.ibatis.executor.resultset.FastResultSetHandler.handleResultSets(FastResultSetHandler.java:152)
at org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:57)
at org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:70)
at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:57)
at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:267)
at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:141)
at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:105)
at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:81)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:101)
... 34 more
Caused by: java.lang.NoSuchMethodException: bakou.entity.Person.<init>()
at java.lang.Class.getConstructor0(Class.java:3082)
at java.lang.Class.getDeclaredConstructor(Class.java:2178)
at org.apache.ibatis.reflection.factory.DefaultObjectFactory.instantiateClass(DefaultObjectFactory.java:57)
... 51 more
The solution is as follows (no parameter structure is provided)
public Person() {
}
public Person(Integer personId, String name, String phone, Card card) {
this.personId = personId;
this.name = name;
this.phone = phone;
this.card = card;
}Servlet.service() for servlet [dispatcherServlet] in context with path [/security] threw exception [Request processing failed; nested exception is org.springframework.dao.InvalidDataAccessApiUsageException: Error attempting to get column 'xxxx_ime' from result set. Cause: java.sql.SQLFeatureNotSupportedException ; null; nested exception is java.sql.SQLFeatureNotSupportedException] with root cause
Error Cause
Java entity class in the field used LocalDateTime type, in the conversion time error: Error attempting to get column ‘xxxx_ime’ from result set……..
Solution:
1. upgrade druid version to 1.1.22 or above to eliminate the problem
2. Change the entity class date type to java.util.
2021/7/9
Error 1: there is no @EnumValue annotation when writing enumeration class
Solution 1: @EnumValueis an annotation supported after mybatis-plus version 3.0
Error 2:
java.lang.annotation.AnnotationFormatError: Invalid default: public abstract java.lang.Class org.mybatis.spring.annotation.MapperScan.factoryBean()
Solution 2:
Modify the dependency from
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus</artifactId>
<version>3.3.2</version>
</dependency>
to
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.0.5</version>
</dependency>
Error 3:
java.lang.IllegalStateException: Failed to load ApplicationContext
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘***’: Unsatisfied dependency
Solution 3:
Delete the dependency of mybaits
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.1.1</version>
</dependency>
Error 4:
The list() method reports red, indicating that the parameter is missing,
Solution 4:
View source code
Method does require parameters
View official documents
It may be due to the version problem. In the latest version, you do not need to pass the parameter. The parameter should be null
Problem-solving
Error 5:
java.lang.IllegalArgumentException: No enum constant com.book.bookshop.entity.enums.Suit.1
Solution 5:
Removing spring-boot-devtools, this plug-in will cause many problems. It is estimated that it should be the main reason
Error:
org.springframework.beans.factory.BeanCreationException: Error creating com.linecorp.armeria.spring.ArmeriaAutoConfiguration via factory method: Bean named ' armeriaServer ' defined in bean instantiation failed; nested exception is org.springframework.beans. BeanInstantiationException: Unable to instantiate com.linecorp.armeria.server.Server: Factory method 'armeriaServer' threw exception; nested exception is java.util.concurrent.CompletionException: java.lang.IllegalStateException: Armeria server failed to start java.lang.IllegalStateException: Armeria server failed to start
Solution:
Close CMD window first
Open Task Manager
Find the detail-information and kill all java.exe. then restart cmd to upzip to install.
Problem-solving
Project scenario:
Nacos is prepared to be used as the configuration center. Version 1.3.1 (official recommended stable version – January 11, 2021)
MySQL version: version 5.7 (I heard that version 5.8 has changed greatly), otherwise nacos-mysql.sql file cannot be run
JDK version: 1.8.0_144 (the lower version not works)
Problem Description:
1. Run the spring cloud Alibaba Nacos source code in the local idea, and an error is reported: unable to start embedded Tomcat
org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:157)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:540)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:316)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248)
at com.alibaba.nacos.Nacos.main(Nacos.java:35)
Caused by: org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.initialize(TomcatWebServer.java:125)
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.<init>(TomcatWebServer.java:86)
at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getTomcatWebServer(TomcatServletWebServerFactory.java:414)
at org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory.getWebServer(TomcatServletWebServerFactory.java:174)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:181)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:154)
... 8 common frames omitted
Cause analysis:
Modified in the application.properties configuration file as below:
#*************** Config Module Related Configurations ***************#
### If use MySQL as datasource:
spring.datasource.platform=mysql
### Count of DB:
db.num=1
### Connect URL of DB:
db.url.0=jdbc:mysql://127.0.0.1:3306/nacos?characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useUnicode=true&useSSL=false&serverTimezone=UTC
db.user=root
db.password=root
Solution:
The solution of idea
The source code was downloaded locally and imported into idea, no error was reported or anything (although the import will prompt that various classes cannot be found or something) The startup class is in the console module, you need to modify the application.properties of this module, the modification method is the same as the modification method of the configuration file of nacos server, Nacos local source code build Start, if not a cluster start, you need to add -Dnacos.standalone=true in the start parameters.
1. Click Edit Configurations in the upper right corner
2. In the pop-up interface, enter -Dnacos.standalone=true in VM options, save it
1: Running jar package in Linux environment, unable to find main
Reason: pom is missing configuration
Add the following to the pom file
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>Full Error:
WARN 7612 — [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘processBusinessController’: Unsatisfied dependency expressed through field ‘userService’; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘userService’: Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘userMapper’ defined in file [F:code ariacs5g ariacs5g_src ariacs5g-parent ariacs5g-power-parent2 ariacs5g-host-service2 argetclassescom ariacshostmapperUserMapper.class]: Unsatisfied dependency expressed through bean property ‘sqlSessionFactory’; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘sqlSessionFactory’ defined in class path resource [com/baomidou/mybatisplus/autoconfigure/MybatisPlusAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method ‘sqlSessionFactory’ threw exception; nested exception is java.lang.NoClassDefFoundError: org/mybatis/logging/LoggerFactory 2020-12-25 21:55:07.728 INFO 7612 — [ main] o.apache.catalina.core.StandardService : Stopping service [Tomcat] 2020-12-25 21:55:07.737 INFO 7612 — [ main] ConditionEvaluationReportLoggingListener : Error starting ApplicationContext. To display the conditions report re-run your application with ‘debug’ enabled. 2020-12-25 21:55:07.757 ERROR 7612 — [ main] o.s.boot.SpringApplication : Application run failed org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘processBusinessController’: Unsatisfied dependency expressed through field ‘userService’; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘userService’: Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘userMapper’ defined in file [F:code ariacs5g ariacs5g_src ariacs5g-parent ariacs5g-power-parent2 ariacs5g-host-service2 argetclassescom ariacshostmapperUserMapper.class]: Unsatisfied dependency expressed through bean property ‘sqlSessionFactory’; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘sqlSessionFactory’ defined in class path resource [com/baomidou/mybatisplus/autoconfigure/MybatisPlusAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method ‘sqlSessionFactory’ threw exception; nested exception is java.lang.NoClassDefFoundError: org/mybatis/logging/LoggerFactory at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessorKaTeX parse error: Undefined control sequence: \[ at position 78: …sor.java:598) ~\̲[̲spring-beans-5.…doGetBeanKaTeX parse error: Undefined control sequence: \[ at position 34: …ory.java:321) ~\̲[̲spring-beans-5.…doGetBeanKaTeX parse error: Undefined control sequence: \[ at position 34: …ory.java:321) ~\̲[̲spring-beans-5.…AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:595) ~[spring-beans-5.1.18.RELEASE.jar:5.1.18.RELEASE] … 19 common frames omitted Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name ‘userMapper’ defined in file [F:code ariacs5g ariacs5g_src ariacs5g-parent ariacs5g-power-parent2 ariacs5g-host-service2 argetclassescom ariacshostmapperUserMapper.class]: Unsatisfied dependency expressed through bean property ‘sqlSessionFactory’; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘sqlSessionFactory’ defined in class path resource [com/baomidou/mybatisplus/autoconfigure/MybatisPlusAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.ibatis.session.SqlSessionFactory]: Factory method ‘sqlSessionFactory’ threw exception; nested exception is java.lang.NoClassDefFoundError: org/mybatis/logging/LoggerFactory at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireByType(AbstractAutowireCapableBeanFactory.java:1506) ~[spring-beans-5.1.18.RELEASE.jar:5.1.18.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1386) ~[spring-beans-5.1.18.RELEASE.jar:5.1.18.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:591) ~[spring-beans-5.1.18.RELEASE.jar:5.1.18.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:514) ~[spring-beans-5.1.18.RELEASE.jar:5.1.18.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBeanKaTeX parse error: Undefined control sequence: \[ at position 34: …ory.java:321) ~\̲[̲spring-beans-5.…ResourceElement.getResourceToInject(CommonAnnotationBeanPostProcessor.java:637) ~[spring-context-5.1.18.RELEASE.jar:5.1.18.RELEASE] at org.springframework.beans.factory.annotation.InjectionMetadataKaTeX parse error: Undefined control sequence: \[ at position 53: …ata.java:180) ~\̲[̲spring-beans-5.…doGetBeanKaTeX parse error: Undefined control sequence: \[ at position 34: …ory.java:321) ~\̲[̲spring-beans-5.…E n h a n c e r B y S p r i n g C G L I B EnhancerBySpringCGLIBEnhancerBySpringCGLIB602 d 46 a 8. C G L I B 602d46a8.CGLIB602d46a8.CGLIBsqlSessionFactoryKaTeX parse error: Undefined control sequence: \[ at position 17: …(<generated>) ~\̲[̲mybatis-plus-bo…E n h a n c e r B y S p r i n g C G L I B EnhancerBySpringCGLIBEnhancerBySpringCGLIB602 d 46 a 8 602d46a8602d46a8F a s t C l a s s B y S p r i n g C G L I B FastClassBySpringCGLIBFastClassBySpringCGLIBKaTeX parse error: Undefined control sequence: \[ at position 31: …(<generated>) ~\̲[̲mybatis-plus-bo…BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:363) ~[spring-context-5.1.18.RELEASE.jar:5.1.18.RELEASE] at com.baomidou.mybatisplus.autoconfigure.MybatisPlusAutoConfiguration E n h a n c e r B y S p r i n g C G L I B EnhancerBySpringCGLIB EnhancerBySpringCGLIB 602d46a8.sqlSessionFactory() ~[mybatis-plus-boot-starter-3.4.1.jar:3.4.1] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_152] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_152] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_152] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_152] at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.1.18.RELEASE.jar:5.1.18.RELEASE] … 58 common frames omitted Caused by: java.lang.ClassNotFoundException: org.mybatis.logging.LoggerFactory at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[na:1.8.0_152] at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[na:1.8.0_152] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338) ~[na:1.8.0_152] at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[na:1.8.0_152] … 70 common frames omitted
Solution: The introduction of both Mybatis and Mybatis-plus into the dependency will cause a conflict, either one. In addition to noticing if there is a conflict in the pom file of this module, we also need to see if the parent module of this module has already introduced the mybaits dependency and you later introduce the Mybatis-plus module in this module, causing a conflict. This scenario is more insidious and not easy to detect.
It can be understood that the dependency failed, and the dependency could not be found
Some errors are reported as follows:
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'pageService': Unsatisfied dependency expressed through field 'pageInfoMepper'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'pageInfoMepper' defined in file [D:projectIDEAProjectdemoPageoutartifactsWEB-INFclassescomligleimapperPageInfoMepper.class]: Cannot resolve reference to bean 'sqlSessionFactory' while setting bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSessionFactory' defined in file [D:projectIDEAProjectdemoPageoutartifactsWEB-INFclassesapplicationContext.xml]: Invocation of init method failed; nested exception is org.springframework.core.NestedIOException: Failed to parse config resource: class path resource [mybatis-config.xml]; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'com.github.pagehelper.PageInterceptor'. Cause: java.lang.ClassNotFoundException: Cannot find class: com.github.pagehelper.PageInterceptor
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:596)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:90)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:374)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1411)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:592)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:843)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:877)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:400)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:291)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:103)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4643)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5109)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:743)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:719)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:703)
at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1737)
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.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:287)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:457)
at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:406)
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.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:287)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at com.sun.jmx.remote.security.MBeanServerAccessController.invoke(MBeanServerAccessController.java:468)
at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1468)
at javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:76)
.......
.......
Solution:
1. First, see if the annotation on the Service layer class is added or wrong, it should be @Service, whether the annotation refers to the Spring class, do not import it into another package, and see the path of the package.
2. Also, if the Service layer is divided into interfaces and implementation classes, see if the implementation class is annotated (@Service), and see if there is an implementation class.
3. Take a look at the configuration file. xml, is there any package where the automatic scan service is started?
<context:component-scan base-package="com.liglei.service"></context:component-scan>
4. Check if the jar package is downloaded completely and if there is this jar package
5. Just to see if there are any packages in the red box in the figure below that have not been imported, and if so, follow the steps below:
File–> Project Structure–> Artifacts–> Right click demopage –> Put into Output Root–> OK
Make sure the above steps are OK. Restart the project and try again~
Error reporting background
Use Mybatis-Plus, but some interfaces still need to write their own SQL, when calling the interface that writes their own SQL, as in the title com.integration.dao.ApiDao.getList, an error occurs.
Mybatis-PlusIt is not used much, this is the first time to build Mybatis-Plusan environment by myself.
Error reporting content
2022-08-24 14:04:21.574 ERROR 21440 --- [nio-8001-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.integration.dao.ApiDao.getApiList] with root cause
org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.integration.dao.ApiDao.getApiList
at com.baomidou.mybatisplus.core.override.PageMapperMethod$SqlCommand.<init>(PageMapperMethod.java:261) ~[mybatis-plus-core-3.0.7.1.jar:3.0.7.1]
at com.baomidou.mybatisplus.core.override.PageMapperMethod.<init>(PageMapperMethod.java:58) ~[mybatis-plus-core-3.0.7.1.jar:3.0.7.1]
at com.baomidou.mybatisplus.core.override.PageMapperProxy.cachedMapperMethod(PageMapperProxy.java:70) ~[mybatis-plus-core-3.0.7.1.jar:3.0.7.1]
at com.baomidou.mybatisplus.core.override.PageMapperProxy.invoke(PageMapperProxy.java:63) ~[mybatis-plus-core-3.0.7.1.jar:3.0.7.1]
at com.sun.proxy.$Proxy79.getApiList(Unknown Source) ~[na:na]
at com.integration.service.impl.ApiServiceImpl.getApiList(ApiServiceImpl.java:30) ~[classes/:na]
at com.integration.controller.ApiController.getApiList(ApiController.java:36) ~[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.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) ~[spring-web-5.1.17.RELEASE.jar:5.1.17.RELEASE]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) ~[spring-web-5.1.17.RELEASE.jar:5.1.17.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105) ~[spring-webmvc-5.1.17.RELEASE.jar:5.1.17.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:892) ~[spring-webmvc-5.1.17.RELEASE.jar:5.1.17.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:797) ~[spring-webmvc-5.1.17.RELEASE.jar:5.1.17.RELEASE]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.1.17.RELEASE.jar:5.1.17.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) ~[spring-webmvc-5.1.17.RELEASE.jar:5.1.17.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) ~[spring-webmvc-5.1.17.RELEASE.jar:5.1.17.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.1.17.RELEASE.jar:5.1.17.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) ~[spring-webmvc-5.1.17.RELEASE.jar:5.1.17.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:652) ~[tomcat-embed-core-9.0.37.jar:4.0.FR]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.1.17.RELEASE.jar:5.1.17.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:733) ~[tomcat-embed-core-9.0.37.jar:4.0.FR]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
For developers who have used Mybatis, I believe that this error is not unfamiliar, the reason for this error is necessarily the interface of the Dao layer, and the Mapper.xml file Sql, did not find the corresponding mapping.
I think there are two ways to troubleshoot.
I also use the above two troubleshooting ideas to troubleshoot, and after troubleshooting, I think there is no problem
Mybatis configuration.
mybatis:
configuration:
map-underscore-to-camel-case: true
mapper-locations: classpath:mybatis/*.xml
XML file path
Dao layer method
List<IomImApiBo> getList();
XML file (SQL)
<select id="getList" resultType="com.integration.entity.IomImApiBo">
select a.api_key,
b.`value`
from iom_im_api a
left join iom_im_api_value b on a.value_id = b.id
</select>
Problems found
Solution:
Add the relevant configuration of mybatis-plus. Note that it is different from the configuration of mybatis….
mybatis-plus:
mapper-locations: classpath:mybatis/*.xml