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Home Page: https://baomidou.com
MyBatis-Plus Official Documentation
Home Page: https://baomidou.com
3.3.2
通过官网的API进行开发,在使用#Update功能时,发现了实际功能与文档说明不符,而且是正好的相反的情况。
CRUD接口-Service CRUD 接口-Update
CRUD接口-Service CRUD 接口-Update
文档信息:
// 根据 whereEntity 条件,更新记录
boolean update(T entity, Wrapper updateWrapper);
但实际使用时发现该接口是根据 updateWrapper条件更新记录,而不是文档上写的whereEntity 条件,whereEntity实际是新数据。
子类没有声明需要自动填充的字段,其父类声明要自动填充的字段.在插入时,自动填充不起作用.
父类部分代码如下:
public class BaseEntity implements Serializable {
private static final long serialVersionUID = 1L;
@TableField(value = "createTime", fill = FieldFill.INSERT)
private Date createTime;
...
}
子类部分代码:
@TableName("sys_user_demo")
public class SysUserDemo extends BaseEntity {
private static final long serialVersionUID = 1L;
private String username;
private String password;
private Integer age;
...
}
怎么能获取到mybatisplus配置项里面的值,既GlobalConfig里面的内容?
例如,想实现在插入时给公共字段deleted 赋默认值,想获取GlobalConfig里面的默认值
在多数据源配置的时候mysql5.7和mysql8可以同时使用吗
我们和美国的开源项目差距还是很大啊
<mybatis-plus.version>3.1.1</mybatis-plus.version>
saveBatch方法慢
saveBatch方法慢
文档中并未提及MySQL的JDBC连接的url中要加rewriteBatchedStatements参数,并保证5.1.13以上版本的驱动,才能实现高性能的批量插入。
建议在官网中提示一下
idea:版本171
dao接口层无法自动生成对应的xml代码
https://mybatis.plus/guide/#%E4%BC%98%E7%A7%80%E6%A1%88%E4%BE%8B
这个 jeeweb-mybatis:JeeWeb 敏捷开发平台
https://mybatis.plus/guide/#%E4%BC%98%E7%A7%80%E6%A1%88%E4%BE%8B
Crab:WEB 极速开发框架
3.0版本
private void handlerPackage(TemplateConfig template, String outputDir, PackageConfig config) { this.packageInfo = new HashMap(6); this.packageInfo.put("Entity", this.joinPackage(config.getParent(), config.getEntity())); this.packageInfo.put("Mapper", this.joinPackage(config.getParent(), config.getMapper())); this.packageInfo.put("Xml", this.joinPackage(config.getParent(), config.getXml())); this.packageInfo.put("Service", this.joinPackage(config.getParent(), config.getService())); this.packageInfo.put("ServiceImpl", this.joinPackage(config.getParent(), config.getServiceImpl())); this.packageInfo.put("Controller", this.joinPackage(config.getParent(), config.getController())); Map configPathInfo = config.getPathInfo(); if(null != configPathInfo) { this.pathInfo = configPathInfo; } else { this.pathInfo = new HashMap(6); this.setPathInfo(this.pathInfo, template.getEntity(this.getGlobalConfig().isKotlin()), outputDir, "entity_path", "Entity"); this.setPathInfo(this.pathInfo, template.getMapper(), outputDir, "mapper_path", "Mapper"); this.setPathInfo(this.pathInfo, template.getXml(), outputDir, "xml_path", "Xml"); this.setPathInfo(this.pathInfo, template.getService(), outputDir, "service_path", "Service"); this.setPathInfo(this.pathInfo, template.getServiceImpl(), outputDir, "service_impl_path", "ServiceImpl"); this.setPathInfo(this.pathInfo, template.getController(), outputDir, "controller_path", "Controller"); } }
2.1.9版本
private void handlerPackage(TemplateConfig template, String outputDir, PackageConfig config) { this.packageInfo = new HashMap(); this.packageInfo.put("ModuleName", config.getModuleName()); this.packageInfo.put("Entity", this.joinPackage(config.getParent(), config.getEntity())); this.packageInfo.put("Mapper", this.joinPackage(config.getParent(), config.getMapper())); this.packageInfo.put("Xml", this.joinPackage(config.getParent(), config.getXml())); this.packageInfo.put("Service", this.joinPackage(config.getParent(), config.getService())); this.packageInfo.put("ServiceImpl", this.joinPackage(config.getParent(), config.getServiceImpl())); this.packageInfo.put("Controller", this.joinPackage(config.getParent(), config.getController())); this.pathInfo = new HashMap(); if(StringUtils.isNotEmpty(template.getEntity(this.getGlobalConfig().isKotlin()))) { this.pathInfo.put("entity_path", this.joinPath(outputDir, (String)this.packageInfo.get("Entity"))); }
比如工程分为三个模块:
web
service
dao
如何配置让自动生成的代码各自归位,即 Controller 生成到 web 模块;service 生成到 service 模块;mapper 生成到 dao 模块。
解决了:
https://github.com/liushuijinger/mp-multi-module-generator
3.4.1
最新版官网文档错误
官网链接:https://baomidou.com/guide/auto-fill-metainfo.html
github链接:https://github.com/baomidou/mybatis-plus-doc/blob/master/guide/auto-fill-metainfo.md
自定义实现类中insertFill中第二个方法起始版本 3.3.3(推荐)调用的方法名写错了,如果使用该文档写的this.strictUpdateFill是没有作用的,应当改为this.strictInsertFill
发生这一异常的原因也可能是依赖包冲突引起的。
springboot项目解决办法:
将pom.xml 中的mybatis依赖
org.mybatis.spring.boot
mybatis-spring-boot-starter
换成
com.baomidou
mybatisplus-spring-boot-starter
xxx
FastOS 基于经典技术组合(Spring Boot、Spring MVC、Apache Shiro、MyBatis-Plus、Freemarker、Bootstrap、AdminLTE)采用经典开发模式 https://gitee.com/zhouhuanOGP/J2EEFAST
文档有这句话:
如果数据库字段使用datetime,逻辑未删除值和已删除值支持配置为字符串null,另一个值支持配置为函数来获取值如now()
但是设置null会报错,应该如何设置呢?
为什么废弃热加载?
自动导入Mybatis-plus test的自动配置,通过
@MybatisPlusTest
注解快速配置。
示例工程:
👉 mybatis-plus-boot-starter-test
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>lates</version>
</dependency>
示例代码:
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import static org.assertj.core.api.Assertions.assertThat;
/**
* @author miemie
* @since 2020-05-27
*/
@MybatisPlusTest
class MybatisPlusSampleTest {
@Autowired
private SampleMapper sampleMapper;
@Test
void testInsert() {
Sample sample = new Sample();
sampleMapper.insert(sample);
assertThat(sample.getId()).isNotNull();
}
}
有的话能不能push一下,想看老版本的文档,比如3.1.2
谢谢
Since yesterday
文档只是简要的说明,例如如何对一些配置进行操作根本不知道要从何得知,要一遍遍的不断试才能够明白,有的还试不明白,真的有些糟糕
for example:
the method int BaseMapper.updateById(Serializable) now returns int instead of boolean, but documents are not updated correspondingly. It is misleading, what does the return value means? 0 for failure or success? What about 1,2,3? Will it return -1,-2-3 ?
看到select和update多处用到Wrapper,但是文档上并没有说明在service层传参时如何传入Wrapper类型的参数,还有就是关于条件构造器如何在service层使用,希望添加这些相关的。
mybatis.plus网站好卡啊,mp.baomidou.com在电脑上的浏览器直接进不去,ie,firefox,chrome,edge都试过了,卡的吓人
ac-blog:适合学生的一款ac博客网站
源码地址:https://github.com/memo012/ac-blog
some time i only want to generate a specufic table code not all table code,how to do it?
org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.xyhj.tacu.dao.UsersMapper.selectList
at org.apache.ibatis.binding.MapperMethod$SqlCommand.<init>(MapperMethod.java:227)
at org.apache.ibatis.binding.MapperMethod.<init>(MapperMethod.java:49)
at org.apache.ibatis.binding.MapperProxy.cachedMapperMethod(MapperProxy.java:65)
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:58)
at com.sun.proxy.$Proxy115.selectList(Unknown Source)
at com.xyhj.tacu.web.SimpleTest.select(SimpleTest.java:35)
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:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:73)
at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:83)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)
自带方法调用报错,springboot项目配置了多个数据源
配置如下
使用 baseMapper 中的 crud 可以自动填充指定字段,但是自己写的语句中填充失败.
谁能告诉我应该怎么开始?
你好,最新的文档为什么现在都是空白,example:http://mp.baomidou.com/guide/enum.html
Reason: Failed to convert property value of type 'java.lang.String' to required type 'com.baomidou.mybatisplus.core.handlers.MetaObjectHandler' for property 'globalConfig.metaObjectHandler'; nested exception is java.lang.IllegalStateException: Cannot convert value of type 'java.lang.String' to required type 'com.baomidou.mybatisplus.core.handlers.MetaObjectHandler' for property 'metaObjectHandler': no matching editors or conversion strategy found
mybatis-plus 使用版本
com.baomidou
mybatis-plus-boot-starter
3.1.0
新增数据库入库的字段值是枚举的name和int 类型不匹配。
查询异常:
[14:08:19.256] ERROR com.task.job.BaseJob 50 execute - 任务执行异常 : org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.executor.result.ResultMapException: Error attempting to get column 'order_status' from result set. Cause: java.lang.IllegalArgumentException: No enum constant com.task.component.enums.RightStatusEnum.1
at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:77) ~[mybatis-spring-2.0.0.jar:2.0.0]
at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:446) ~[mybatis-spring-2.0.0.jar:2.0.0]
at com.sun.proxy.$Proxy103.selectList(Unknown Source) ~[?:?]
at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:230) ~[mybatis-spring-2.0.0.jar:2.0.0]
at com.baomidou.mybatisplus.core.override.MybatisMapperMethod.executeForIPage(MybatisMapperMethod.java:125) ~[mybatis-plus-core-3.1.0.jar:3.1.0]
at com.baomidou.mybatisplus.core.override.MybatisMapperMethod.execute(MybatisMapperMethod.java:94) ~[mybatis-plus-core-3.1.0.jar:3.1.0]
at com.baomidou.mybatisplus.core.override.MybatisMapperProxy.invoke(MybatisMapperProxy.java:61) ~[mybatis-plus-core-3.1.0.jar:3.1.0]
at com.sun.proxy.$Proxy111.selectPage(Unknown Source) ~[?:?]
at com.baomidou.mybatisplus.extension.service.impl.ServiceImpl.page(ServiceImpl.java:277) ~[mybatis-plus-extension-3.1.0.jar:3.1.0]
at com.baomidou.mybatisplus.extension.service.impl.ServiceImpl$$FastClassBySpringCGLIB$$76535273.invoke() ~[mybatis-plus-extension-3.1.0.jar:3.1.0]
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.1.3.RELEASE.jar:5.1.3.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:684) ~[spring-aop-5.1.3.RELEASE.jar:5.1.3.RELEASE]
at com..task.service.impl.RightOrderServiceImpl$$EnhancerBySpringCGLIB$$c695d69b.page() ~[classes/:?]
at com..task.service.impl.JobServiceImpl.handleRightOrder(JobServiceImpl.java:68) ~[classes/:?]
at com..task.service.impl.JobServiceImpl$$FastClassBySpringCGLIB$$965ed6d4.invoke() ~[classes/:?]
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.1.3.RELEASE.jar:5.1.3.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:749) ~[spring-aop-5.1.3.RELEASE.jar:5.1.3.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.1.3.RELEASE.jar:5.1.3.RELEASE]
at org.springframework.aop.framework.adapter.MethodBeforeAdviceInterceptor.invoke(MethodBeforeAdviceInterceptor.java:56) ~[spring-aop-5.1.3.RELEASE.jar:5.1.3.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:175) ~[spring-aop-5.1.3.RELEASE.jar:5.1.3.RELEASE]
at org.springframework.aop.aspectj.AspectJAfterAdvice.invoke(AspectJAfterAdvice.java:47) ~[spring-aop-5.1.3.RELEASE.jar:5.1.3.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:175) ~[spring-aop-5.1.3.RELEASE.jar:5.1.3.RELEASE]
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:93) ~[spring-aop-5.1.3.RELEASE.jar:5.1.3.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.1.3.RELEASE.jar:5.1.3.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:688) ~[spring-aop-5.1.3.RELEASE.jar:5.1.3.RELEASE]
at com..task.service.impl.JobServiceImpl$$EnhancerBySpringCGLIB$$fac27e43.handleRightOrder() ~[classes/:?]
at com.task.job.RightJob.doExecute(RightJob.java:11) ~[classes/:?]
at com.task.job.RightJob.doExecute(RightJob.java:1) ~[classes/:?]
at com.task.job.BaseJob.execute(BaseJob.java:48) [classes/:?]
at org.quartz.core.JobRunShell.run(JobRunShell.java:202) [quartz-2.3.0.jar:?]
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:573) [quartz-2.3.0.jar:?]
Caused by: org.apache.ibatis.executor.result.ResultMapException: Error attempting to get column 'order_status' from result set. Cause: java.lang.IllegalArgumentException: No enum constant com..task.component.enums.RightStatusEnum.1
at org.apache.ibatis.type.BaseTypeHandler.getResult(BaseTypeHandler.java:83) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.applyAutomaticMappings(DefaultResultSetHandler.java:521) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.getRowValue(DefaultResultSetHandler.java:402) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleRowValuesForSimpleResultMap(DefaultResultSetHandler.java:354) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleRowValues(DefaultResultSetHandler.java:328) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSet(DefaultResultSetHandler.java:301) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSets(DefaultResultSetHandler.java:194) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:65) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:79) ~[mybatis-3.5.0.jar:3.5.0]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_131]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_131]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_131]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_131]
at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:63) ~[mybatis-3.5.0.jar:3.5.0]
at com.sun.proxy.$Proxy142.query(Unknown Source) ~[?:?]
at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:63) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:324) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:136) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:148) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141) ~[mybatis-3.5.0.jar:3.5.0]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_131]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_131]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_131]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_131]
at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433) ~[mybatis-spring-2.0.0.jar:2.0.0]
... 29 more
Caused by: java.lang.IllegalArgumentException: No enum constant com..task.component.enums.RightStatusEnum.1
at java.lang.Enum.valueOf(Enum.java:238) ~[?:1.8.0_131]
at org.apache.ibatis.type.EnumTypeHandler.getNullableResult(EnumTypeHandler.java:49) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.type.EnumTypeHandler.getNullableResult(EnumTypeHandler.java:26) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.type.BaseTypeHandler.getResult(BaseTypeHandler.java:81) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.applyAutomaticMappings(DefaultResultSetHandler.java:521) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.getRowValue(DefaultResultSetHandler.java:402) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleRowValuesForSimpleResultMap(DefaultResultSetHandler.java:354) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleRowValues(DefaultResultSetHandler.java:328) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSet(DefaultResultSetHandler.java:301) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSets(DefaultResultSetHandler.java:194) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:65) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:79) ~[mybatis-3.5.0.jar:3.5.0]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_131]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_131]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_131]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_131]
at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:63) ~[mybatis-3.5.0.jar:3.5.0]
at com.sun.proxy.$Proxy142.query(Unknown Source) ~[?:?]
at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:63) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:324) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:136) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:148) ~[mybatis-3.5.0.jar:3.5.0]
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141) ~[mybatis-3.5.0.jar:3.5.0]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_131]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_131]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_131]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_131]
at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433) ~[mybatis-spring-2.0.0.jar:2.0.0]
... 29 more
例如 http://mp.baomidou.com/guide/page.html 等很多文档模块没有内容
3.4.0版本中, OptimisticLockerInterceptor
以及PaginationInterceptor
类已被弃用, 请更新文档最新使用方法
dynamic-datasource-spring-boot-starter :版本为3.0.0,不能加载到多数据源,
那不实现Serializable接口不就可以了吗?传输时会因为没有实现该接口而报错,为什么非要实现这个接口呢?
在nacos上配置数据源信息使用了npw.但mybatis plus在获取env变量解密npw的顺序比nacos拉取配置源还要早的问题.
mybatis-plus-doc/guide/sql-injector.md no longer apply to version 3.3.1
请问mybatis-plus有关联查询吗?例如:一个老师对象里有多个学生对象,怎么在查询老师的时候把对应的学生找出来?只能手动地更改mapper.xml文件,加上吗?但是一旦表结构变化的话,重新生成mapper.xml文件,自己新增的内容就会被覆盖
2020-08-25 11:46:05 [http-nio-8081-exec-1] ERROR org.apache.catalina.core.ContainerBase.[Tomcat].[localhost].[/].[dispatcherServlet] -Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.TooManyResultsException: Expected one result (or null) to be returned by selectOne(), but found: 2] with root cause
org.apache.ibatis.exceptions.TooManyResultsException: Expected one result (or null) to be returned by selectOne(), but found: 2
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:80)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:426)
at com.sun.proxy.$Proxy68.selectOne(Unknown Source)
at org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:159)
at com.baomidou.mybatisplus.core.override.MybatisMapperMethod.execute(MybatisMapperMethod.java:108)
at com.baomidou.mybatisplus.core.override.MybatisMapperProxy.invoke(MybatisMapperProxy.java:96)
at com.sun.proxy.$Proxy69.selectOne(Unknown Source)
at com.etekcity.it.storageservice.service.impl.ApplicationConfigServiceImpl.selectOne(ApplicationConfigServiceImpl.java:33)
at com.etekcity.it.storageservice.service.impl.ApplicationConfigServiceImpl$$FastClassBySpringCGLIB$$9e4e08c6.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:687)
at com.etekcity.it.storageservice.service.impl.ApplicationConfigServiceImpl$$EnhancerBySpringCGLIB$$1b905e18.selectOne(<generated>)
at com.etekcity.it.storageservice.controller.BucketController.delete(BucketController.java:70)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
你好! 非常感谢关注我的麻烦.
update和insert方法都需要返回实体给前端, 但是像created, updated这些字段, 他是由数据库自动加入的, 请问有没办法获取数据库自动加入的值, 实在没办法也可以手动注入一个, 目前我用aop 切update, insert等方法. 有没有更合适的方案呢.
增加逻辑删除字段后,有的时候查询想要查询已删除的,但是自动添加逻辑删除不能查询
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