Debugging

1.ConcurrentModificationException: null

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2.재미난 DateTimeException

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3.url에 // 를 왜 잠재적으로 악의적인 아이라고 할까? | potentially malicious String "//"

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4.null, blank 사용 시 주의 (NullPointerException)

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5.SQL Error

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6.스프링부트 & Nginx : 413 Request Entity Too Large

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7.exception is org.hibernate.MappingException: Could not determine type for:

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8.Could not write JSON: could not initialize proxy ~ com.fasterxml.jackson.databind.JsonMappingException:

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9.JPQL - Paging 문제 상황

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10.스프링부트 CORS 에러 해결 및 필터 위치

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11.@LastModifiedDate 적용 안됨!?

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12.MySQL SQLException: Zero date value prohibited

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13.velog의 임시저장 기능

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14.MappingException: Could not determine type for: java.util.List (String, Integer 등)

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15.Caused by: oracle.jdbc.OracleDatabaseException: ORA-00972: identifier is too long

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16.AnnotationException: A Foreign key refering has the wrong number of column. should be 3

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17.mappedBy must not define database mappings like @JoinTable or @JoinColumn

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18."Handshake failed due to invalid Upgrade header: null"

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19.오라클 Network Adapter Error

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20.너무 충격적인 상황 ㅣ DB 테이블 생성 문제 - share은 예약어다

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21.크롬 : CAUTION: Provisional headers are shown

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22.Cannot truncate a table referenced in a foreign key constraint ~

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23.오라클 could not extract ResultSet

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24.Project | ORA-00001: unique constraint (스키마이름.UK_T~) violated

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25.Socket 사용 시 NGINX 에 설정해둬야 하는 것!

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26.Exception in thread "http-nio-8081-Poller" java.lang.OutOfMemoryError: Java heap space (메클 힙인스 스택메)

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27.Gson 활용 중 만난 Expected BEGIN_OBJECT but was STRING

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28.error: Your local changes to the following files would be overwritten by merge:

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29.java.lang.StackOverflowError\r\n\tat oracle.jdbc~ 스택오버플로우

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30.org.hibernate.TransientPropertyValueException: object references an unsaved transient instance - save the transient instance before flushing :

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31.Failed to initialize JPA EntityManagerFactory: Illegal attempt to map a non collection as a @OneToMany, @ManyToMany or @CollectionOfElements

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32.Invocation of init method failed; nested exception is java.lang.IllegalStateException: Ambiguous mapping.

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33.org.hibernate.HibernateException: A collection with cascade="all-delete-orphan" was no longer referenced by the owning entity instance:

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34.FILEZILLA 로 파일 이동 중 open for write: permission denied

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35.IO 오류: The Network Adapter could not establish the connection

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36.java.nio.file.NoSuchFileException - in out project 자체서버 해결

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37.$$FastClassBySpringCGLIB$$d4fdbaae.invoke - 시점에서 nullpointerexception

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38.게시글을 임시저장 한 뒤, 썸네일 수정하면, db에 뜨지 않던 에러

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39.a different object with the same identifier value was already associated with the session

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40.JpaSystemException: A collection with cascade="all-delete-orphan" was no longer referenced by the owning entity instance:

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41.자체 서버에서 파일 업로드 권한 거부 당했을 때

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42. ERROR 1231 (42000): Variable 'sql_mode' can't be set to the value of 'NO_AUTO_CREATE_USER'

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44.Execution failed for task ':compileJava'. > error: invalid source release: 17 - build fail 이유

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45.oracle.jdbc.OracleDatabaseException: ORA-01461: can bind a LONG value only for insert into a LONG column

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46.Lob Error

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47.which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by

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49.Flutter : Android sdkmanager not found. Update to the latest Android SDK and ensure that the cmdline-tools are installed to resolve this.

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50.org.hibernate.hql.internal.ast.QuerySyntaxException: unexpected AST node - QueryDsl

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51.swagger 적용 중 (gradle) ApplicationContextException 에러

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53.Caused by: org.hibernate.AnnotationException: No identifier specified for entity: "entity명"

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54.Caused by: java.lang.IllegalStateException: Ambiguous mapping. Cannot map '

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55.Request processing failed; nested exception is org.hibernate.LazyInitializationException: could not initialize proxyno Session

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56.org.springframework.context.ApplicationContextException: Unable to start web server;

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57.celling refresh attempt: org.springframework.beans.factory.BeanCreationException:

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58.org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: ItemModule.entity.member.Member.roles, could not initialize proxy - no Session

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60.자바 오버로딩 문제 Overloading a method: both methods have same erasure

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61.복합키 에러 : Invocation of init method failed; nested exception is org.hibernate.AnnotationException: Property of @IdClass not found in

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62.query did not return a unique result:

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63.The dependencies of some of the beans in the application context form a cycle:

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64.TypeError: unhashable type: 'list'

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65.build - Stack over flow : stack size가 부족해서 난 에러

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66.Caused by: java.lang.StackOverflowError at lombok.core.AST.fieldsOf(AST.java:234) at lombok.javac.JavacAST.drill(JavacAST.java:506) 에 대한 고찰

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67.정적 파일을 담당하는 addResourceHandlers가 작동하지 않은 이슈

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68.[DEBUG] org.postgresql.util.PSQLException: Large Objects may not be used in auto-commit mode.

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69.[JPA] deleteInBatch()

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