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书籍《Java 开发坑点解析：从根因分析到最佳实践》 & 极客时间专栏《Java业务开发常见错误100例》源码

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java pitfalls mistake design-patterns spring jvm troubleshooting security

java-common-mistakes's Introduction

《Java 开发坑点解析：从根因分析到最佳实践》源码目录

书籍购买地址

京东购买当当购买

源码说明

专栏的所有代码基于Java 8 + Spring Boot 2.2.1.RELEASE + Spring Cloud Greenwich.SR4 + Spring Data Moore-SR4开发，基于Maven做依赖管理。
每一个案例都是独立的SpringBoot或Java命令行应用程序，可以单独启动，避免相互干扰，但是它们公用一个Maven POM。
下载源码后，先在根目录运行docker-compose up命令来通过Docker运行相关的MySQL、Redis、ES、RabbitMQ等系统，随后再来启动应用。

专栏大部分内容只依赖MySQL一个组件，如果docker-compose启动有困难的话可以先注释docker-compose.yml中的相关组件，比如注释ES和RabbitMQ，等后面设计篇需要用到的时候再启动，并且需要同时删除pom.xml中的相关SpringBoot Starter模块。

源码根目录下有一个readme.md的Markdown文件，这里有一个目录列了每一篇文章对应的源码位置，同时来到每一个源码包中下面还有一个readme.md文件，里面列了每一篇文章中每一个小节的源码包名。
大多数源码中的案例都会使用wrong和right这样方法命名来代表错误实现和正确实现，你可以结合书籍内容对比实现来理解。
有一些案例（比如SQL索引一文）会基于当前时间生成测试数据，所以不确保文中的测试结果本地可以重现，需要自己调整测试用例。

书籍代码索引

说明

点击链接进入每一节的代码文件夹
每一个文件夹中又有一个readme.md文件，里面列了每节中每一个小节的源码文件夹
【思考】代表思考与讨论中涉及到的代码
【扩展】代表扩展阅读中涉及到的代码
【补充】代表更多其它的不出现在书中涉及到内容的代码

第1章 Java 8中常用的重要知识点

1.0：java8

第2章代码篇

2.1 使用了并发工具类库，并不等于就没有线程安全问题了：concurrenttool
2.2 代码加锁：不要让“锁”事成为烦心事：lock
2.3 线程池：业务代码中最常用也最容易犯错的组件：threadpool
2.4 连接池：别让连接池帮了倒忙：connectionpool
2.5 HTTP调用：您考虑到超时、重试、并发了吗：httpinvoke
2.6 20%的业务代码的Spring声明式事务，可能都没处理正确：transaction
2.7 数据库索引：索引不是万能药：sqlindex
2.8 判等问题：程序里如何确定你就是你：equals
2.9 数值计算：注意精度、舍入和溢出问题：numeralcalculations
2.10 集合类：坑满地的List列表操作：collection
2.11 空值处理：分不清楚的null和恼人的空指针：nullvalue
2.12 异常处理：别让自己在出问题的时候变为瞎子：exception
2.13 日志：日志记录真没您想象得那么简单：logging
2.14 文件IO：实现高效正确的文件读写并非易事：io
2.15 序列化：一来一回，你还是原来的你吗：serialization
2.16 用好Java 8的日期时间类，少踩一些“老三样”的坑：datetime
2.17 别以为“自动挡”就不可能出现OOM：oom
2.18 当反射、注解和泛型遇到OOP时，会有哪些坑：advancedfeatures
2.19 Spring框架：IoC和AOP是扩展的核心：springpart1
2.20 Spring框架：帮我们做了很多工作也带来了复杂度：springpart2

第3章系统设计

3.1 代码重复：搞定代码重复的三个绝招：redundantcode
3.2 接口设计：系统间对话的语言，一定要统一：apidesign
3.3 缓存设计：缓存可以锦上添花也可以落井下石：cachedesign
3.4 业务代码写完，就意味着生产就绪了吗：productionready
3.5 异步处理好用，但非常容易用错：asyncprocess
3.6 数据存储：NoSQL与RDBMS如何取长补短、相辅相成？：nosqluse

第4章代码安全问题

4.1 数据源头：任何客户端的东西都不可信任：clientdata
4.2 安全兜底：涉及钱时，必须考虑防刷、限量和防重：securitylastdefense
4.3 数据和代码：数据就是数据，代码就是代码：dataandcode
4.4 如何正确地保存和传输敏感数据：sensitivedata

第5章 Java程序故障排查

5.1 定位Java应用问题的排错套路：N/A
5.2 分析定位Java问题，一定要用好这些工具：troubleshootingtools
5.3 Java程序从虚拟机迁移到Kubernetes的一些坑：N/A

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java-common-mistakes's Issues

Cannot run oom.usernameautocomplete example application

I see the following error when i tried to run the application. I dont know why Field 'age' doesn't have a default value error since UserDTO and UserEntity does not have the age field at all.

/Library/Java/JavaVirtualMachines/applejdk-8.0.312.7.1.jdk/Contents/Home/bin/java -XX:TieredStopAtLevel=1 -noverify -Dspring.output.ansi.enabled=always -Dcom.sun.management.jmxremote -Dspring.jmx.enabled=true -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabled=true -javaagent:/Applications/IntelliJ IDEA.app/Contents/lib/idea_rt.jar=61891:/Applications/IntelliJ IDEA.app/Contents/bin -Dfile.encoding=UTF-8 -classpath /Library/Java/JavaVirtualMachines/applejdk-8.0.312.7.1.jdk/Contents/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/applejdk-8.0.312.7.1.jdk/Contents/Home/jre/lib/ext/cldrdata.jar:/Library/Java/JavaVirtualMachines/applejdk-8.0.312.7.1.jdk/Contents/Home/jre/lib/ext/dnsns.jar:/Library/Java/JavaVirtualMachines/applejdk-8.0.312.7.1.jdk/Contents/Home/jre/lib/ext/jaccess.jar:/Library/Java/JavaVirtualMachines/applejdk-8.0.312.7.1.jdk/Contents/Home/jre/lib/ext/localedata.jar:/Library/Java/JavaVirtualMachines/applejdk-8.0.312.7.1.jdk/Contents/Home/jre/lib/ext/nashorn.jar:/Library/Java/JavaVirtualMachines/applejdk-8.0.312.7.1.jdk/Contents/Home/jre/lib/ext/sunec.jar:/Library/Java/JavaVirtualMachines/applejdk-8.0.312.7.1.jdk/Contents/Home/jre/lib/ext/sunjce_provider.jar:/Library/Java/JavaVirtualMachines/applejdk-8.0.312.7.1.jdk/Contents/Home/jre/lib/ext/sunpkcs11.jar:/Library/Java/JavaVirtualMachines/applejdk-8.0.312.7.1.jdk/Contents/Home/jre/lib/ext/zipfs.jar:/Library/Java/JavaVirtualMachines/applejdk-8.0.312.7.1.jdk/Contents/Home/jre/lib/jce.jar:/Library/Java/JavaVirtualMachines/applejdk-8.0.312.7.1.jdk/Contents/Home/jre/lib/jfr.jar:/Library/Java/JavaVirtualMachines/applejdk-8.0.312.7.1.jdk/Contents/Home/jre/lib/jsse.jar:/Library/Java/JavaVirtualMachines/applejdk-8.0.312.7.1.jdk/Contents/Home/jre/lib/management-agent.jar:/Library/Java/JavaVirtualMachines/applejdk-8.0.312.7.1.jdk/Contents/Home/jre/lib/resources.jar:/Library/Java/JavaVirtualMachines/applejdk-8.0.312.7.1.jdk/Contents/Home/jre/lib/rt.jar:/Users/cwang/github/brookwc/java-common-mistakes/target/classes:/Users/cwang/.m2/repository/org/springframework/boot/spring-boot-starter-web/2.2.1.RELEASE/spring-boot-starter-web-2.2.1.RELEASE.jar:/Users/cwang/.m2/repository/org/springframework/boot/spring-boot-starter/2.2.1.RELEASE/spring-boot-starter-2.2.1.RELEASE.jar:/Users/cwang/.m2/repository/org/springframework/boot/spring-boot/2.2.1.RELEASE/spring-boot-2.2.1.RELEASE.jar:/Users/cwang/.m2/repository/org/springframework/boot/spring-boot-autoconfigure/2.2.1.RELEASE/spring-boot-autoconfigure-2.2.1.RELEASE.jar:/Users/cwang/.m2/repository/org/springframework/boot/spring-boot-starter-logging/2.2.1.RELEASE/spring-boot-starter-logging-2.2.1.RELEASE.jar:/Users/cwang/.m2/repository/ch/qos/logback/logback-classic/1.2.3/logback-classic-1.2.3.jar:/Users/cwang/.m2/repository/ch/qos/logback/logback-core/1.2.3/logback-core-1.2.3.jar:/Users/cwang/.m2/repository/org/apache/logging/log4j/log4j-to-slf4j/2.12.1/log4j-to-slf4j-2.12.1.jar:/Users/cwang/.m2/repository/org/apache/logging/log4j/log4j-api/2.12.1/log4j-api-2.12.1.jar:/Users/cwang/.m2/repository/org/slf4j/jul-to-slf4j/1.7.29/jul-to-slf4j-1.7.29.jar:/Users/cwang/.m2/repository/jakarta/annotation/jakarta.annotation-api/1.3.5/jakarta.annotation-api-1.3.5.jar:/Users/cwang/.m2/repository/org/yaml/snakeyaml/1.25/snakeyaml-1.25.jar:/Users/cwang/.m2/repository/org/springframework/boot/spring-boot-starter-json/2.2.1.RELEASE/spring-boot-starter-json-2.2.1.RELEASE.jar:/Users/cwang/.m2/repository/com/fasterxml/jackson/datatype/jackson-datatype-jdk8/2.10.0/jackson-datatype-jdk8-2.10.0.jar:/Users/cwang/.m2/repository/com/fasterxml/jackson/datatype/jackson-datatype-jsr310/2.10.0/jackson-datatype-jsr310-2.10.0.jar:/Users/cwang/.m2/repository/com/fasterxml/jackson/module/jackson-module-parameter-names/2.10.0/jackson-module-parameter-names-2.10.0.jar:/Users/cwang/.m2/repository/org/springframework/boot/spring-boot-starter-tomcat/2.2.1.RELEASE/spring-boot-starter-tomcat-2.2.1.RELEASE.jar:/Users/cwang/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/9.0.27/tomcat-embed-core-9.0.27.jar:/Users/cwang/.m2/repository/org/apache/tomcat/embed/tomcat-embed-el/9.0.27/tomcat-embed-el-9.0.27.jar:/Users/cwang/.m2/repository/org/apache/tomcat/embed/tomcat-embed-websocket/9.0.27/tomcat-embed-websocket-9.0.27.jar:/Users/cwang/.m2/repository/org/springframework/boot/spring-boot-starter-validation/2.2.1.RELEASE/spring-boot-starter-validation-2.2.1.RELEASE.jar:/Users/cwang/.m2/repository/jakarta/validation/jakarta.validation-api/2.0.1/jakarta.validation-api-2.0.1.jar:/Users/cwang/.m2/repository/org/hibernate/validator/hibernate-validator/6.0.18.Final/hibernate-validator-6.0.18.Final.jar:/Users/cwang/.m2/repository/org/springframework/spring-web/5.2.1.RELEASE/spring-web-5.2.1.RELEASE.jar:/Users/cwang/.m2/repository/org/springframework/spring-beans/5.2.1.RELEASE/spring-beans-5.2.1.RELEASE.jar:/Users/cwang/.m2/repository/org/springframework/spring-webmvc/5.2.1.RELEASE/spring-webmvc-5.2.1.RELEASE.jar:/Users/cwang/.m2/repository/org/springframework/spring-aop/5.2.1.RELEASE/spring-aop-5.2.1.RELEASE.jar:/Users/cwang/.m2/repository/org/springframework/spring-context/5.2.1.RELEASE/spring-context-5.2.1.RELEASE.jar:/Users/cwang/.m2/repository/org/springframework/spring-expression/5.2.1.RELEASE/spring-expression-5.2.1.RELEASE.jar:/Users/cwang/.m2/repository/org/springframework/boot/spring-boot-starter-actuator/2.2.1.RELEASE/spring-boot-starter-actuator-2.2.1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ser-2.0.5.RELEASE.jar:/Users/cwang/.m2/repository/org/unbescape/unbescape/1.1.6.RELEASE/unbescape-1.1.6.RELEASE.jar:/Users/cwang/.m2/repository/org/thymeleaf/extras/thymeleaf-extras-java8time/3.0.4.RELEASE/thymeleaf-extras-java8time-3.0.4.RELEASE.jar:/Users/cwang/.m2/repository/mysql/mysql-connector-java/8.0.18/mysql-connector-java-8.0.18.jar:/Users/cwang/.m2/repository/com/google/guava/guava/29.0-jre/guava-29.0-jre.jar:/Users/cwang/.m2/repository/com/google/guava/failureaccess/1.0.1/failureaccess-1.0.1.jar:/Users/cwang/.m2/repository/com/google/guava/listenablefuture/9999.0-empty-to-avoid-conflict-with-guava/listenablefuture-9999.0-empty-to-avoid-conflict-with-guava.jar:/Users/cwang/.m2/repository/com/google/code/findbugs/jsr305/3.0.2/jsr305-3.0.2.jar:/Users/cwang/.m2/repository/org/checkerframework/checker-qual/2.11.1/checker-qual-2.11.1.jar:/Users/cwang/.m2/repository/com/google/errorprone/error_prone_annotations/2.3.4/error_prone_annotations-2.3.4.jar:/Users/cwang/.m2/repository/com/google/j2objc/j2objc-annotations/1.3/j2objc-annotations-1.3.jar:/Users/cwang/.m2/repository/com/alibaba/csp/sentinel-core/1.7.1/sentinel-core-1.7.1.jar:/Users/cwang/.m2/repository/org/apache/zookeeper/zookeeper/3.5.6/zookeeper-3.5.6.jar:/Users/cwang/.m2/repository/org/apache/zookeeper/zookeeper-jute/3.5.6/zookeeper-jute-3.5.6.jar:/Users/cwang/.m2/repository/org/apache/yetus/audience-annotations/0.5.0/audience-annotations-0.5.0.jar:/Users/cwang/.m2/repository/io/netty/netty-handler/4.1.43.Final/netty-handler-4.1.43.Final.jar:/Users/cwang/.m2/repository/io/netty/netty-transport-native-epoll/4.1.43.Final/netty-transport-native-epoll-4.1.43.Final.jar:/Users/cwang/.m2/repository/io/netty/netty-transport-native-unix-common/4.1.43.Final/netty-transport-native-unix-common-4.1.43.Final.jar:/Users/cwang/.m2/repository/log4j/log4j/1.2.17/log4j-1.2.17.jar:/Users/cwang/.m2/repository/org/projectlombok/lombok/1.18.22/lombok-1.18.22.jar:/Users/cwang/.m2/repository/jakarta/xml/bind/jakarta.xml.bind-api/2.3.2/jakarta.xml.bind-api-2.3.2.jar:/Users/cwang/.m2/repository/org/junit/jupiter/junit-jupiter-api/5.5.2/junit-jupiter-api-5.5.2.jar:/Users/cwang/.m2/repository/org/opentest4j/opentest4j/1.2.0/opentest4j-1.2.0.jar:/Users/cwang/.m2/repository/org/junit/platform/junit-platform-commons/1.5.2/junit-platform-commons-1.5.2.jar:/Users/cwang/.m2/repository/org/hamcrest/hamcrest/2.1/hamcrest-2.1.jar:/Users/cwang/.m2/repository/org/objenesis/objenesis/2.6/objenesis-2.6.jar:/Users/cwang/.m2/repository/org/springframework/spring-core/5.2.1.RELEASE/spring-core-5.2.1.RELEASE.jar:/Users/cwang/.m2/repository/org/springframework/spring-jcl/5.2.1.RELEASE/spring-jcl-5.2.1.RELEASE.jar:/Users/cwang/.m2/repository/org/apache/httpcomponents/httpclient/4.5.13/httpclient-4.5.13.jar:/Users/cwang/.m2/repository/org/apache/httpcomponents/httpcore/4.4.12/httpcore-4.4.12.jar:/Users/cwang/.m2/repository/commons-codec/commons-codec/1.13/commons-codec-1.13.jar:/Users/cwang/.m2/repository/org/apache/httpcomponents/fluent-hc/4.5.9/fluent-hc-4.5.9.jar:/Users/cwang/.m2/repository/commons-logging/commons-logging/1.2/commons-logging-1.2.jar:/Users/cwang/.m2/repository/org/springframework/boot/spring-boot-starter-data-elasticsearch/2.2.1.RELEASE/spring-boot-starter-data-elasticsearch-2.2.1.RELEASE.jar:/Users/cwang/.m2/repository/org/springframework/data/spring-data-elasticsearch/3.2.4.RELEASE/spring-data-elasticsearch-3.2.4.RELEASE.jar:/Users/cwang/.m2/repository/joda-time/joda-time/2.10.5/joda-time-2.10.5.jar:/Users/cwang/.m2/repository/org/elasticsearch/client/transport/6.8.4/transport-6.8.4.jar:/Users/cwang/.m2/repository/org/elasticsearch/elasticsearch/6.8.4/elasticsearch-6.8.4.jar:/Users/cwang/.m2/repository/org/elasticsearch/elasticsearch-core/6.8.4/elasticsearch-core-6.8.4.jar:/Users/cwang/.m2/repository/org/elasticsearch/elasticsearch-secure-sm/6.8.4/elasticsearch-secure-sm-6.8.4.jar:/Users/cwang/.m2/repository/org/elasticsearch/elasticsearch-x-content/6.8.4/elasticsearch-x-content-6.8.4.jar:/Users/cwang/.m2/repository/com/fasterxml/jackson/dataformat/jackson-dataformat-smile/2.10.0/jackson-dataformat-smile-2.10.0.jar:/Users/cwang/.m2/repository/com/fasterxml/jackson/dataformat/jackson-dataformat-cbor/2.10.0/jackson-dataformat-cbor-2.10.0.jar:/Users/cwang/.m2/repository/org/apache/lucene/lucene-core/7.7.2/lucene-core-7.7.2.jar:/Users/cwang/.m2/repository/org/apache/lucene/lucene-analyzers-common/7.7.2/lucene-analyzers-common-7.7.2.jar:/Users/cwang/.m2/repository/org/apache/lucene/lucene-backward-codecs/7.7.2/lucene-backward-codecs-7.7.2.jar:/Users/cwang/.m2/repository/org/apache/lucene/lucene-grouping/7.7.2/lucene-grouping-7.7.2.jar:/Users/cwang/.m2/repository/org/apache/lucene/lucene-highlighter/7.7.2/lucene-highlighter-7.7.2.jar:/Users/cwang/.m2/repository/org/apache/lucene/lucene-join/7.7.2/lucene-join-7.7.2.jar:/Users/cwang/.m2/repository/org/apache/lucene/lucene-memory/7.7.2/lucene-memory-7.7.2.jar:/Users/cwang/.m2/repository/org/apache/lucene/lucene-misc/7.7.2/lucene-misc-7.7.2.jar:/Users/cwang/.m2/repository/org/apache/lucene/lucene-queries/7.7.2/lucene-queries-7.7.2.jar:/Users/cwang/.m2/repository/org/apache/lucene/lucene-queryparser/7.7.2/lucene-queryparser-7.7.2.jar:/Users/cwang/.m2/repository/org/apache/lucene/lucene-sandbox/7.7.2/lucene-sandbox-7.7.2.jar:/Users/cwang/.m2/repository/org/apache/lucene/lucene-spatial/7.7.2/lucene-spatial-7.7.2.jar:/Users/cwang/.m2/repository/org/apache/lucene/lucene-spatial-extras/7.7.2/lucene-spatial-extras-7.7.2.jar:/Users/cwang/.m2/repository/org/apache/lucene/lucene-spatial3d/7.7.2/lucene-spatial3d-7.7.2.jar:/Users/cwang/.m2/repository/org/apache/lucene/lucene-suggest/7.7.2/lucene-suggest-7.7.2.jar:/Users/cwang/.m2/repository/org/elasticsearch/elasticsearch-cli/6.8.4/elasticsearch-cli-6.8.4.jar:/Users/cwang/.m2/repository/net/sf/jopt-simple/jopt-simple/5.0.2/jopt-simple-5.0.2.jar:/Users/cwang/.m2/repository/com/carrotsearch/hppc/0.7.1/hppc-0.7.1.jar:/Users/cwang/.m2/repository/com/tdunning/t-digest/3.2/t-digest-3.2.jar:/Users/cwang/.m2/repository/org/elasticsearch/jna/4.5.1/jna-4.5.1.jar:/Users/cwang/.m2/repository/org/elasticsearch/plugin/reindex-client/6.8.4/reindex-client-6.8.4.jar:/Users/cwang/.m2/repository/org/elasticsearch/elasticsearch-ssl-config/6.8.4/elasticsearch-ssl-config-6.8.4.jar:/Users/cwang/.m2/repository/org/elasticsearch/plugin/lang-mustache-client/6.8.4/lang-mustache-client-6.8.4.jar:/Users/cwang/.m2/repository/com/github/spullara/mustache/java/compiler/0.9.3/compiler-0.9.3.jar:/Users/cwang/.m2/repository/org/elasticsearch/plugin/percolator-client/6.8.4/percolator-client-6.8.4.jar:/Users/cwang/.m2/repository/org/elasticsearch/plugin/parent-join-client/6.8.4/parent-join-client-6.8.4.jar:/Users/cwang/.m2/repository/org/elasticsearch/plugin/rank-eval-client/6.8.4/rank-eval-client-6.8.4.jar:/Users/cwang/.m2/repository/org/elasticsearch/plugin/transport-netty4-client/6.8.4/transport-netty4-client-6.8.4.jar:/Users/cwang/.m2/repository/io/netty/netty-codec-http/4.1.43.Final/netty-codec-http-4.1.43.Final.jar:/Users/cwang/.m2/repository/org/elasticsearch/client/elasticsearch-rest-high-level-client/6.8.4/elasticsearch-rest-high-level-client-6.8.4.jar:/Users/cwang/.m2/repository/org/elasticsearch/client/elasticsearch-rest-client/6.8.4/elasticsearch-rest-client-6.8.4.jar:/Users/cwang/.m2/repository/org/apache/httpcomponents/httpasyncclient/4.1.4/httpasyncclient-4.1.4.jar:/Users/cwang/.m2/repository/org/apache/httpcomponents/httpcore-nio/4.4.12/httpcore-nio-4.4.12.jar:/Users/cwang/.m2/repository/org/elasticsearch/plugin/aggs-matrix-stats-client/6.8.4/aggs-matrix-stats-client-6.8.4.jar:/Users/cwang/.m2/repository/org/influxdb/influxdb-java/2.17/influxdb-java-2.17.jar:/Users/cwang/.m2/repository/com/squareup/retrofit2/retrofit/2.6.2/retrofit-2.6.2.jar:/Users/cwang/.m2/repository/com/squareup/retrofit2/converter-moshi/2.6.2/converter-moshi-2.6.2.jar:/Users/cwang/.m2/repository/com/squareup/moshi/moshi/1.8.0/moshi-1.8.0.jar:/Users/cwang/.m2/repository/org/msgpack/msgpack-core/0.8.18/msgpack-core-0.8.18.jar:/Users/cwang/.m2/repository/com/squareup/okhttp3/okhttp/3.14.4/okhttp-3.14.4.jar:/Users/cwang/.m2/repository/com/squareup/okio/okio/1.17.2/okio-1.17.2.jar:/Users/cwang/.m2/repository/com/squareup/okhttp3/logging-interceptor/3.14.4/logging-interceptor-3.14.4.jar:/Users/cwang/.m2/repository/com/fasterxml/jackson/dataformat/jackson-dataformat-csv/2.10.0/jackson-dataformat-csv-2.10.0.jar:/Users/cwang/.m2/repository/com/fasterxml/jackson/core/jackson-databind/2.10.0/jackson-databind-2.10.0.jar:/Users/cwang/.m2/repository/com/fasterxml/jackson/core/jackson-annotations/2.10.0/jackson-annotations-2.10.0.jar:/Users/cwang/.m2/repository/com/fasterxml/jackson/core/jackson-core/2.10.0/jackson-core-2.10.0.jar:/Users/cwang/.m2/repository/org/mybatis/spring/boot/mybatis-spring-boot-starter/2.1.1/mybatis-spring-boot-starter-2.1.1.jar:/Users/cwang/.m2/repository/org/mybatis/spring/boot/mybatis-spring-boot-autoconfigure/2.1.1/mybatis-spring-boot-autoconfigure-2.1.1.jar:/Users/cwang/.m2/repository/org/mybatis/mybatis/3.5.3/mybatis-3.5.3.jar:/Users/cwang/.m2/repository/org/mybatis/mybatis-spring/2.0.3/mybatis-spring-2.0.3.jar org.geekbang.time.commonmistakes.oom.usernameautocomplete.CommonMistakesApplication
[22:32:01.376] [main] [INFO ] [o.s.c.s.PostProcessorRegistrationDelegate$BeanPostProcessorChecker:330 ] - Bean 'org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration' of type [org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration$$EnhancerBySpringCGLIB$$432e31cb] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)

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 :: Spring Boot ::        (v2.2.1.RELEASE)

[22:32:01.468] [main] [INFO ] [o.g.t.c.o.u.CommonMistakesApplication:651 ] - No active profile set, falling back to default profiles: default
[22:32:02.055] [main] [INFO ] [o.s.d.r.c.RepositoryConfigurationDelegate:249 ] - Multiple Spring Data modules found, entering strict repository configuration mode!
[22:32:02.056] [main] [INFO ] [o.s.d.r.c.RepositoryConfigurationDelegate:127 ] - Bootstrapping Spring Data Elasticsearch repositories in DEFAULT mode.
[22:32:02.092] [main] [INFO ] [o.s.d.r.c.RepositoryConfigurationExtensionSupport:348 ] - Spring Data Elasticsearch - Could not safely identify store assignment for repository candidate interface org.geekbang.time.commonmistakes.oom.usernameautocomplete.UserRepository. If you want this repository to be a Elasticsearch repository, consider annotating your entities with one of these annotations: org.springframework.data.elasticsearch.annotations.Document (preferred), or consider extending one of the following types with your repository: org.springframework.data.elasticsearch.repository.ElasticsearchRepository, org.springframework.data.elasticsearch.repository.ElasticsearchCrudRepository.
[22:32:02.092] [main] [INFO ] [o.s.d.r.c.RepositoryConfigurationDelegate:187 ] - Finished Spring Data repository scanning in 32ms. Found 0 Elasticsearch repository interfaces.
[22:32:02.096] [main] [INFO ] [o.s.d.r.c.RepositoryConfigurationDelegate:249 ] - Multiple Spring Data modules found, entering strict repository configuration mode!
[22:32:02.097] [main] [INFO ] [o.s.d.r.c.RepositoryConfigurationDelegate:127 ] - Bootstrapping Spring Data Reactive Elasticsearch repositories in DEFAULT mode.
[22:32:02.099] [main] [INFO ] [o.s.d.r.c.RepositoryConfigurationExtensionSupport:348 ] - Spring Data Reactive Elasticsearch - Could not safely identify store assignment for repository candidate interface org.geekbang.time.commonmistakes.oom.usernameautocomplete.UserRepository. If you want this repository to be a Reactive Elasticsearch repository, consider annotating your entities with one of these annotations: org.springframework.data.elasticsearch.annotations.Document (preferred), or consider extending one of the following types with your repository: org.springframework.data.elasticsearch.repository.ReactiveElasticsearchRepository.
[22:32:02.099] [main] [INFO ] [o.s.d.r.c.RepositoryConfigurationDelegate:187 ] - Finished Spring Data repository scanning in 2ms. Found 0 Reactive Elasticsearch repository interfaces.
[22:32:02.106] [main] [INFO ] [o.s.d.r.c.RepositoryConfigurationDelegate:249 ] - Multiple Spring Data modules found, entering strict repository configuration mode!
[22:32:02.106] [main] [INFO ] [o.s.d.r.c.RepositoryConfigurationDelegate:127 ] - Bootstrapping Spring Data JPA repositories in DEFAULT mode.
[22:32:02.142] [main] [INFO ] [o.s.d.r.c.RepositoryConfigurationDelegate:187 ] - Finished Spring Data repository scanning in 32ms. Found 1 JPA repository interfaces.
[22:32:02.150] [main] [INFO ] [o.s.d.r.c.RepositoryConfigurationDelegate:249 ] - Multiple Spring Data modules found, entering strict repository configuration mode!
[22:32:02.151] [main] [INFO ] [o.s.d.r.c.RepositoryConfigurationDelegate:127 ] - Bootstrapping Spring Data Redis repositories in DEFAULT mode.
[22:32:02.190] [main] [INFO ] [o.s.d.r.c.RepositoryConfigurationExtensionSupport:348 ] - Spring Data Redis - Could not safely identify store assignment for repository candidate interface org.geekbang.time.commonmistakes.oom.usernameautocomplete.UserRepository. If you want this repository to be a Redis repository, consider annotating your entities with one of these annotations: org.springframework.data.redis.core.RedisHash (preferred), or consider extending one of the following types with your repository: org.springframework.data.keyvalue.repository.KeyValueRepository.
[22:32:02.190] [main] [INFO ] [o.s.d.r.c.RepositoryConfigurationDelegate:187 ] - Finished Spring Data repository scanning in 2ms. Found 0 Redis repository interfaces.
[22:32:02.298] [main] [WARN ] [o.m.spring.mapper.ClassPathMapperScanner:44  ] - No MyBatis mapper was found in '[org.geekbang.time.commonmistakes.oom.usernameautocomplete]' package. Please check your configuration.
[22:32:02.360] [main] [INFO ] [o.s.cloud.context.scope.GenericScope:295 ] - BeanFactory id=eb7ea3d1-c81d-3a6f-9274-5ba74aec0af8
[22:32:02.497] [main] [INFO ] [o.s.c.s.PostProcessorRegistrationDelegate$BeanPostProcessorChecker:330 ] - Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
[22:32:02.525] [main] [INFO ] [o.s.c.s.PostProcessorRegistrationDelegate$BeanPostProcessorChecker:330 ] - Bean 'org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration' of type [org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration$$EnhancerBySpringCGLIB$$432e31cb] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
[22:32:02.660] [main] [INFO ] [o.s.b.w.embedded.tomcat.TomcatWebServer:92  ] - Tomcat initialized with port(s): 45678 (http)
[22:32:02.665] [main] [INFO ] [o.apache.coyote.http11.Http11NioProtocol:173 ] - Initializing ProtocolHandler ["http-nio-45678"]
[22:32:02.665] [main] [INFO ] [org.apache.catalina.core.StandardService:173 ] - Starting service [Tomcat]
[22:32:02.665] [main] [INFO ] [org.apache.catalina.core.StandardEngine:173 ] - Starting Servlet engine: [Apache Tomcat/9.0.27]
[22:32:02.785] [main] [INFO ] [o.a.c.c.C.[Tomcat].[localhost].[/]:173 ] - Initializing Spring embedded WebApplicationContext
[22:32:02.785] [main] [INFO ] [o.s.web.context.ContextLoader:284 ] - Root WebApplicationContext: initialization completed in 1307 ms
[22:32:02.818] [main] [INFO ] [io.micrometer.influx.InfluxMeterRegistry:81  ] - publishing metrics to influx every 1m
[22:32:03.467] [main] [INFO ] [org.redisson.Version:41  ] - Redisson 3.11.5
[22:32:03.654] [redisson-netty-2-10] [INFO ] [o.r.c.pool.MasterPubSubConnectionPool:168 ] - 1 connections initialized for 127.0.0.1/127.0.0.1:6379
[22:32:03.659] [redisson-netty-2-19] [INFO ] [o.r.connection.pool.MasterConnectionPool:168 ] - 24 connections initialized for 127.0.0.1/127.0.0.1:6379
[22:32:03.856] [main] [DEBUG] [o.s.o.j.LocalContainerEntityManagerFactoryBean:361 ] - Building JPA container EntityManagerFactory for persistence unit 'default'
[22:32:03.867] [main] [INFO ] [o.hibernate.jpa.internal.util.LogHelper:31  ] - HHH000204: Processing PersistenceUnitInfo [name: default]
[22:32:03.924] [main] [INFO ] [org.hibernate.Version:46  ] - HHH000412: Hibernate Core {5.4.8.Final}
[22:32:04.015] [main] [INFO ] [org.hibernate.annotations.common.Version:49  ] - HCANN000001: Hibernate Commons Annotations {5.1.0.Final}
[22:32:04.090] [main] [INFO ] [com.zaxxer.hikari.HikariDataSource:110 ] - HikariPool-1 - Starting...
[22:32:04.344] [main] [INFO ] [com.zaxxer.hikari.HikariDataSource:123 ] - HikariPool-1 - Start completed.
[22:32:04.361] [main] [INFO ] [org.hibernate.dialect.Dialect:172 ] - HHH000400: Using dialect: org.hibernate.dialect.MySQL57Dialect
[22:32:04.812] [main] [INFO ] [o.h.e.t.j.p.i.JtaPlatformInitiator:52  ] - HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform]
[22:32:04.817] [main] [INFO ] [o.s.o.j.LocalContainerEntityManagerFactoryBean:416 ] - Initialized JPA EntityManagerFactory for persistence unit 'default'
[22:32:04.890] [main] [DEBUG] [o.s.o.j.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler:305 ] - Creating new EntityManager for shared EntityManager invocation
[22:32:04.927] [main] [DEBUG] [o.s.o.j.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler:305 ] - Creating new EntityManager for shared EntityManager invocation
[22:32:04.958] [main] [DEBUG] [o.s.o.j.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler:305 ] - Creating new EntityManager for shared EntityManager invocation
[22:32:05.017] [main] [DEBUG] [o.s.orm.jpa.JpaTransactionManager:370 ] - Creating new transaction with name [org.springframework.data.jpa.repository.support.SimpleJpaRepository.saveAll]: PROPAGATION_REQUIRED,ISOLATION_DEFAULT
[22:32:05.018] [main] [DEBUG] [o.s.orm.jpa.JpaTransactionManager:393 ] - Opened new EntityManager [SessionImpl(373275593<open>)] for JPA transaction
[22:32:05.024] [main] [DEBUG] [o.s.orm.jpa.JpaTransactionManager:421 ] - Exposing JPA transaction as JDBC [org.springframework.orm.jpa.vendor.HibernateJpaDialect$HibernateConnectionHandle@13cc31df]
[22:32:05.091] [main] [WARN ] [o.h.engine.jdbc.spi.SqlExceptionHelper:137 ] - SQL Error: 1364, SQLState: HY000
[22:32:05.091] [main] [ERROR] [o.h.engine.jdbc.spi.SqlExceptionHelper:142 ] - Field 'age' doesn't have a default value
[22:32:05.097] [main] [DEBUG] [o.s.orm.jpa.JpaTransactionManager:834 ] - Initiating transaction rollback
[22:32:05.097] [main] [DEBUG] [o.s.orm.jpa.JpaTransactionManager:555 ] - Rolling back JPA transaction on EntityManager [SessionImpl(373275593<open>)]
[22:32:05.102] [main] [DEBUG] [o.s.orm.jpa.JpaTransactionManager:620 ] - Closing JPA EntityManager [SessionImpl(373275593<open>)] after transaction
[22:32:05.106] [main] [WARN ] [o.s.b.w.s.c.AnnotationConfigServletWebServerApplicationContext:558 ] - Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'usernameAutoCompleteService': Invocation of init method failed; nested exception is org.springframework.orm.jpa.JpaSystemException: could not execute statement; nested exception is org.hibernate.exception.GenericJDBCException: could not execute statement
[22:32:05.107] [main] [INFO ] [o.s.o.j.LocalContainerEntityManagerFactoryBean:598 ] - Closing JPA EntityManagerFactory for persistence unit 'default'
[22:32:05.237] [main] [INFO ] [com.zaxxer.hikari.HikariDataSource:350 ] - HikariPool-1 - Shutdown initiated...
[22:32:05.242] [main] [INFO ] [com.zaxxer.hikari.HikariDataSource:352 ] - HikariPool-1 - Shutdown completed.
[22:32:05.243] [main] [INFO ] [org.apache.catalina.core.StandardService:173 ] - Stopping service [Tomcat]
[22:32:05.258] [main] [INFO ] [o.s.b.a.l.ConditionEvaluationReportLoggingListener:136 ] - 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
[22:32:05.268] [main] [ERROR] [o.springframework.boot.SpringApplication:826 ] - Application run failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'usernameAutoCompleteService': Invocation of init method failed; nested exception is org.springframework.orm.jpa.JpaSystemException: could not execute statement; nested exception is org.hibernate.exception.GenericJDBCException: could not execute statement
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:160)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:416)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1795)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595)
	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:222)
	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:879)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550)
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141)
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747)
	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:1226)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215)
	at org.geekbang.time.commonmistakes.oom.usernameautocomplete.CommonMistakesApplication.main(CommonMistakesApplication.java:10)
Caused by: org.springframework.orm.jpa.JpaSystemException: could not execute statement; nested exception is org.hibernate.exception.GenericJDBCException: could not execute statement
	at org.springframework.orm.jpa.vendor.HibernateJpaDialect.convertHibernateAccessException(HibernateJpaDialect.java:353)
	at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:255)
	at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:528)
	at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:61)
	at org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:242)
	at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:153)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
	at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:178)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
	at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:93)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212)
	at com.sun.proxy.$Proxy124.saveAll(Unknown Source)
	at org.geekbang.time.commonmistakes.oom.usernameautocomplete.UsernameAutoCompleteService.wrong(UsernameAutoCompleteService.java:27)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389)
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:333)
	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:157)
	... 18 common frames omitted
Caused by: org.hibernate.exception.GenericJDBCException: could not execute statement
	at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:47)
	at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113)
	at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:99)
	at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:200)
	at org.hibernate.dialect.identity.GetGeneratedKeysDelegate.executeAndExtract(GetGeneratedKeysDelegate.java:57)
	at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:43)
	at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3106)
	at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3699)
	at org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:84)
	at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:645)
	at org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:282)
	at org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:263)
	at org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:317)
	at org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:335)
	at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:292)
	at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:198)
	at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:128)
	at org.hibernate.event.internal.DefaultMergeEventListener.saveTransientEntity(DefaultMergeEventListener.java:271)
	at org.hibernate.event.internal.DefaultMergeEventListener.entityIsTransient(DefaultMergeEventListener.java:243)
	at org.hibernate.event.internal.DefaultMergeEventListener.entityIsDetached(DefaultMergeEventListener.java:318)
	at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:172)
	at org.hibernate.event.internal.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:70)
	at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:108)
	at org.hibernate.internal.SessionImpl.fireMerge(SessionImpl.java:775)
	at org.hibernate.internal.SessionImpl.merge(SessionImpl.java:762)
	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.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:314)
	at com.sun.proxy.$Proxy120.merge(Unknown Source)
	at org.springframework.data.jpa.repository.support.SimpleJpaRepository.save(SimpleJpaRepository.java:557)
	at org.springframework.data.jpa.repository.support.SimpleJpaRepository.saveAll(SimpleJpaRepository.java:588)
	at org.springframework.data.jpa.repository.support.SimpleJpaRepository.saveAll(SimpleJpaRepository.java:78)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.data.repository.core.support.RepositoryComposition$RepositoryFragments.invoke(RepositoryComposition.java:371)
	at org.springframework.data.repository.core.support.RepositoryComposition.invoke(RepositoryComposition.java:204)
	at org.springframework.data.repository.core.support.RepositoryFactorySupport$ImplementationMethodExecutionInterceptor.invoke(RepositoryFactorySupport.java:657)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
	at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:621)
	at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:605)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
	at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:80)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
	at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:366)
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:99)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
	at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:139)
	... 33 common frames omitted
Caused by: java.sql.SQLException: Field 'age' doesn't have a default value
	at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:129)
	at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97)
	at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122)
	at com.mysql.cj.jdbc.ClientPreparedStatement.executeInternal(ClientPreparedStatement.java:953)
	at com.mysql.cj.jdbc.ClientPreparedStatement.executeUpdateInternal(ClientPreparedStatement.java:1092)
	at com.mysql.cj.jdbc.ClientPreparedStatement.executeUpdateInternal(ClientPreparedStatement.java:1040)
	at com.mysql.cj.jdbc.ClientPreparedStatement.executeLargeUpdate(ClientPreparedStatement.java:1347)
	at com.mysql.cj.jdbc.ClientPreparedStatement.executeUpdate(ClientPreparedStatement.java:1025)
	at com.zaxxer.hikari.pool.ProxyPreparedStatement.executeUpdate(ProxyPreparedStatement.java:61)
	at com.zaxxer.hikari.pool.HikariProxyPreparedStatement.executeUpdate(HikariProxyPreparedStatement.java)
	at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:197)
	... 80 common frames omitted

Process finished with exit code 1

docker-compose.yml 在m1芯片的mac 上有版本错误

原始 file 会报以下问题：ERROR: no matching manifest for linux/arm64/v8 in the manifest list entries
在指定 platform 之后解决，我的一个比较初级的解决方案是指定 platform 的版本：

  mysql57:
    image: mysql:5.7
    platform: linux/amd64
    container_name: common-mistakes-mysql57
···

关于threadlocal的疑问

你好，正在学习你的极客时间课程，在第一节中的评论区，和一位同学关于一个问题有不同的理解，
现在不知道他说的对不对，请指教下，谢谢。

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