当前使用版本(必填,否则不予处理)

3.5.1 旧版本也有问题

该问题是如何引起的？(确定最新版也有问题再提!!!)

实体

@TableName("t_user")
@Data
public class User {
    @TableId(type = IdType.AUTO)
    private Long id;
}

测试代码

  @Test
  public void testUploadExcel() {
      LambdaQueryWrapper<User> query = Wrappers.lambdaQuery();
      query.select(
              User::getId
      );
  }

重现步骤(如果有就写完整)

执行上述代码

报错信息

com.baomidou.mybatisplus.core.exceptions.MybatisPlusException: can not find lambda cache for this entity [com.xxx.User]

    at com.baomidou.mybatisplus.core.toolkit.ExceptionUtils.mpe(ExceptionUtils.java:49)
    at com.baomidou.mybatisplus.core.toolkit.Assert.isTrue(Assert.java:38)
    at com.baomidou.mybatisplus.core.toolkit.Assert.notNull(Assert.java:72)
    at com.baomidou.mybatisplus.core.conditions.AbstractLambdaWrapper.tryInitCache(AbstractLambdaWrapper.java:94)
    at com.baomidou.mybatisplus.core.conditions.AbstractLambdaWrapper.getColumnCache(AbstractLambdaWrapper.java:83)
    at com.baomidou.mybatisplus.core.conditions.AbstractLambdaWrapper.columnToString(AbstractLambdaWrapper.java:67)
    at com.baomidou.mybatisplus.core.conditions.AbstractLambdaWrapper.lambda$columnsToString$0(AbstractLambdaWrapper.java:58)
    at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
    at java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
    at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
    at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
    at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
    at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
    at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
    at com.baomidou.mybatisplus.core.conditions.AbstractLambdaWrapper.columnsToString(AbstractLambdaWrapper.java:58)
    at com.baomidou.mybatisplus.core.conditions.AbstractLambdaWrapper.columnsToString(AbstractLambdaWrapper.java:54)
    at com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper.select(LambdaQueryWrapper.java:84)
    at com.xxx.UserTest.testUploadExcel(SearchReportPdfServiceTest.java:91)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.testng.internal.invokers.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:135)
    at org.testng.internal.invokers.TestInvoker.invokeMethod(TestInvoker.java:673)
    at org.testng.internal.invokers.TestInvoker.invokeTestMethod(TestInvoker.java:220)
    at org.testng.internal.invokers.MethodRunner.runInSequence(MethodRunner.java:50)
    at org.testng.internal.invokers.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:945)
    at org.testng.internal.invokers.TestInvoker.invokeTestMethods(TestInvoker.java:193)
    at org.testng.internal.invokers.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:146)
    at org.testng.internal.invokers.TestMethodWorker.run(TestMethodWorker.java:128)
    at java.util.ArrayList.forEach(ArrayList.java:1249)
    at org.testng.TestRunner.privateRun(TestRunner.java:808)
    at org.testng.TestRunner.run(TestRunner.java:603)
    at org.testng.SuiteRunner.runTest(SuiteRunner.java:429)
    at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:423)
    at org.testng.SuiteRunner.privateRun(SuiteRunner.java:383)
    at org.testng.SuiteRunner.run(SuiteRunner.java:326)
    at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
    at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:95)
    at org.testng.TestNG.runSuitesSequentially(TestNG.java:1249)
    at org.testng.TestNG.runSuitesLocally(TestNG.java:1169)
    at org.testng.TestNG.runSuites(TestNG.java:1092)
    at org.testng.TestNG.run(TestNG.java:1060)
    at com.intellij.rt.testng.IDEARemoteTestNG.run(IDEARemoteTestNG.java:66)
    at com.intellij.rt.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:109)

Comment From: miemieYaho

非正常启动无缓存

Comment From: xiumin1993

所以什么样才算正常启动？ 事实上我是再写单元测试时发现会报错，单元测试我们mock了 mapper，所以不会加载datasource 和 mybatis 是否可以改成不强制依赖缓存，因为debug发现其实可以获取到列