ErrorNotes

☕ Java Errors

44 error notes

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javaintermediate

Xử lý ObjectOptimisticLockingFailureException trong Spring Boot: Chiến lược JPA Concurrency

org.springframework.orm.ObjectOptimisticLockingFailureException: Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1
spring-bootjpahibernateconcurrency
javaintermedi

Khắc phục lỗi HikariPool Connection Timeout trong Spring Boot: Hướng dẫn thực tế

java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 30000ms
javaspring-boothikarihiệu-suất
javaintermediate

Fix java.lang.IllegalMonitorStateException: current thread is not owner Khi Dùng wait() hoặc notify()

Exception in thread "Thread-0" java.lang.IllegalMonitorStateException: current thread is not owner
javaconcurrencymultithreading
javabeginner

Cách sửa lỗi 'Request method POST not supported' trong Spring Boot

org.springframework.web.HttpRequestMethodNotSupportedException: Request method 'POST' not supported
spring-bootjavarest-apigỡ lỗi
javaintermediate

Fix java.lang.IllegalArgumentException: No enum constant Khi Chuyển Đổi String sang Enum trong Java

java.lang.IllegalArgumentException: No enum constant com.example.model.Status.UNKNOWN
javaenumchuyển đổiillegalargumentexception
javabeginner

Cách sửa lỗi java.util.NoSuchElementException: No value present trong Java

java.util.NoSuchElementException: No value present
javaoptionalngoại lệgỡ lỗi
javaintermediate

Fix java.time.format.DateTimeParseException: Giá trị tháng không hợp lệ trong Java

java.time.format.DateTimeParseException: Text '2023-13-01' could not be parsed: Invalid value for MonthOfYear (valid values 1 - 12): 13
javadatetimedate-format
javaintermediate

Sửa lỗi BeanCreationException: 'Invocation of init method failed' trong Spring Boot

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataProcessor': Invocation of init method failed
javaspring-bootbeancreationexceptiondependency-injection
javaintermediate

Sửa lỗi javax.validation.ConstraintViolationException trong Spring Boot Persistence

javax.validation.ConstraintViolationException: Validation failed for classes [...] during persist time for groups [javax.validation.groups.Default]
javaspring-bootbean-validationhibernate
javaintermediate

Khắc phục lỗi EmptyResultDataAccessException trong Spring Boot

org.springframework.dao.EmptyResultDataAccessException: Incorrect result size: expected 1, actual 0
spring-bootjavajpaxu-ly-loi
javaintermediate

Sửa lỗi java.lang.NoClassDefFoundError: Could not initialize class

java.lang.NoClassDefFoundError: Could not initialize class com.example.MyService
javajvmgỡ lỗinoclassdeffounderror
javaintermediate

Sửa lỗi 'Access is denied' (403 Forbidden) trong Spring Security

org.springframework.security.access.AccessDeniedException: Access is denied
javaspring-bootspring-securityphân quyền
javabeginner

Sửa lỗi org.springframework.web.HttpMediaTypeNotSupportedException: Content type 'application/x-www-form-urlencoded' not supported trong Spring Boot

org.springframework.web.HttpMediaTypeNotSupportedException: Content type 'application/x-www-form-urlencoded' not supported
javaspring-bootrest-apihttp
javaintermediate

Sửa lỗi java.util.concurrent.RejectedExecutionException Khi ThreadPool Đầy hoặc Đã Shutdown

java.util.concurrent.RejectedExecutionException: Task java.util.concurrent.FutureTask rejected from java.util.concurrent.ThreadPoolExecutor
javaconcurrencythreadpoolexecutor-service
javabeginner

Sửa lỗi java.lang.UnsupportedClassVersionError: Class được biên dịch bởi Java Runtime mới hơn

java.lang.UnsupportedClassVersionError: com/example/MyClass has been compiled by a more recent version of the Java Runtime
javaversionjdkjre
javaintermediate

Sửa lỗi java.lang.OutOfMemoryError: Direct buffer memory trong Java NIO và Netty

java.lang.OutOfMemoryError: Direct buffer memory
javanionettybộ nhớ
javabeginner

Sửa lỗi com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException Khi Deserialize JSON với Jackson

com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "fieldName" (class com.example.MyDto), not marked as ignorable
javajacksonjsonspring-boot
javaintermediate

Sửa lỗi java.lang.ExceptionInInitializerError Khi Khởi Tạo Static Field Thất Bại trong Java

java.lang.ExceptionInInitializerError at com.example.MyClass.<clinit>(MyClass.java:15) Caused by: java.lang.NullPointerException
javastatickhởi tạoclassloader
javabeginner

Sửa lỗi java.net.BindException: Address already in use Khi Khởi Động Java Server

java.net.BindException: Address already in use: bind
javanetworkingbindexceptionserver
javaintermediate

Cách khắc phục lỗi 'java.lang.OutOfMemoryError: GC overhead limit exceeded' trong Java

java.lang.OutOfMemoryError: GC overhead limit exceeded
javajvmmemory-leakgarbage-collection
javabeginner

Cách khắc phục java.lang.UnsupportedOperationException trong Java List

java.lang.UnsupportedOperationException
javacollectionsdanh-sachunsupportedoperationexception
javaintermediate

Sửa lỗi java.lang.IllegalStateException: Duplicate Key trong Collectors.toMap()

java.lang.IllegalStateException: Duplicate key (attempt to merge values key1 and key2)
javastreamsmapillegalstateexception
javaintermediate

Sửa lỗi org.springframework.dao.DataIntegrityViolationException: vi phạm ràng buộc trong Spring JPA

org.springframework.dao.DataIntegrityViolationException: could not execute statement; SQL [n/a]; constraint [users.UK_email]
javaspringjpahibernate
javabeginner

Khắc phục lỗi java.net.UnknownHostException: Hướng dẫn xử lý các vấn đề DNS trong Java

java.net.UnknownHostException: api.service-provider.com
javanetworkingdnskhắc phục sự cố
javabeginner

Cách sửa lỗi java.sql.SQLException: No Suitable Driver Found

java.sql.SQLException: No suitable driver found for jdbc:mysql://localhost:3306/db_name
javajdbcmysqlpostgresql
javaintermediate

Sửa lỗi java.lang.NoSuchMethodError: Hướng dẫn xử lý xung đột Dependency trong Java

Exception in thread "main" java.lang.NoSuchMethodError: com.example.utils.StringHelper.format(Ljava/lang/String;)Ljava/lang/String;
javanosuchmethoderrorxung-dot-dependencymaven
javabeginner

Sửa lỗi 'java.net.ConnectException: Connection refused' trong ứng dụng Java

java.net.ConnectException: Connection refused (Connection refused)
javanetworkingkhắc-phục-lỗispring-boot
javaintermediate

Cách khắc phục javax.persistence.TransactionRequiredException: No EntityManager with actual transaction available

javax.persistence.TransactionRequiredException: No EntityManager with actual transaction available for current thread
javaspring-bootjpahibernate
javaintermediate

Sửa lỗi java.lang.OutOfMemoryError: Metaspace trong ứng dụng Java

java.lang.OutOfMemoryError: Metaspace
javajvmmetaspacebộ nhớ
javabeginner

Cách khắc phục lỗi java.lang.ArrayIndexOutOfBoundsException: Index X out of bounds for length Y

java.lang.ArrayIndexOutOfBoundsException: Index X out of bounds for length Y
javamảngchỉ sốngoại lệ
javabeginner

Khắc phục java.io.NotSerializableException: Hướng dẫn thực tế

java.io.NotSerializableException: com.example.dto.UserDTO
javatuần tự hóanotserializableexceptionbackend
javabeginner

Sửa lỗi NoSuchBeanDefinitionException: Tại sao Spring không tìm thấy Bean của bạn

org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type
javaspring-bootdependency-injectiondebugging
javaintermediate

Sửa lỗi java.net.SocketTimeoutException: Read timed out trong Java HTTP Requests

java.net.SocketTimeoutException: Read timed out
javanetworkhttptimeout
javaintermediate

Fix java.lang.ClassCastException: class java.lang.String cannot be cast to class java.lang.Integer

java.lang.ClassCastException: class java.lang.String cannot be cast to class java.lang.Integer
javaclasscastép kiểugenerics
javaintermediate

Fix javax.net.ssl.SSLHandshakeException: PKIX path building failed trong Java HTTPS Calls

javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
javasslhttpscertificate
javaintermediate

Fix org.hibernate.LazyInitializationException: failed to lazily initialize a collection - no Session

org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: could not initialize proxy - no Session
javahibernatejpalazy-loading
javabeginner

Fix lỗi Spring Boot: Failed to configure a DataSource — thuộc tính 'url' chưa được chỉ định

Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.
javaspring-bootdatasourcedatabase
javabeginner

Fix java.lang.NumberFormatException: For input string trong Java

java.lang.NumberFormatException: For input string: "abc"
javanumberformatparsinginteger
javabeginner

Sửa lỗi java.io.FileNotFoundException: No such file or directory trong Java

java.io.FileNotFoundException: /path/to/your/file.txt (No such file or directory)
javaiofileexception
javaintermediate

Fix java.util.ConcurrentModificationException Khi Sửa Collection Trong Lúc Duyệt

java.util.ConcurrentModificationException
javacollectionconcurrencyexception
javabeginner

Fix java.lang.NullPointerException trong Java

java.lang.NullPointerException
javanullpointerexceptionexception
javabeginner

Fix java.lang.StackOverflowError trong Java

java.lang.StackOverflowError
javarecursionstack
javaintermediate

Khắc phục java.lang.ClassNotFoundException: com.example.MyClass - Hướng dẫn xử lý sự cố

java.lang.ClassNotFoundException: com.example.MyClass
javaclasspathclassloader
javatrung bình

Khắc phục lỗi java.lang.OutOfMemoryError: Java heap space

java.lang.OutOfMemoryError: Java heap space
javabộ nhớheapjvm