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批量插入用append字符串拼接,字段都核对过了,就是报错

1

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

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加载spring找不到beans

1

spring

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

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mybatis无法识别路径

0

1

mybatis

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

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测试类无法获得键盘输入

0

1

junit

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码

package com.service;

import com.pojo.Student;
import org.apache.log4j.Logger;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import java.util.List;


@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:spring-mybatis.xml")
public class IMStudentServiceTest {
    @Autowired
    IMStudentService imStudentService;

    @Autowired
    private IFStudentService ifStudentService;

    private static Logger logger=Logger.getLogger(IMStudentService.class);
    private Student student;


    @Test
    public void  test2(){
        student=ifStudentService.findStudentById(1);
        logger.info(student);
    }
    @Test
    public void findStudentById() {
        student=imStudentService.findStudentById(1);
        logger.info(student);
    }

    @Test
    public void findStudentByName() {
        student=imStudentService.findStudentByName("一");
        Reader reader=new Reader();
        logger.info(student);
    }

    @Test
    public void inputStudent() {
        student=new Student();
        student.setName("test1");
        student.setSchool("test1");
        student.setSex("1");
        student.setAge("33");
        System.out.println(student);
        imStudentService.inputStudent(student);
    }

    @Test
    public void outputStudentById() {
        imStudentService.outputStudentById(6);
    }

    @Test
    public void replayStudent() {
        student=new Student();
        student.setName("test1");
        student.setSchool("test1");
        student.setSex("1");
        student.setAge("33");
        student.setId(19);
        student.setUpdate_at(System.currentTimeMillis());
        imStudentService.replayStudent(student);

    }

    @Test
    public void findStudent() {
        List<Student> students;
        students=imStudentService.findStudent();
        logger.info(students);
    }
}

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mybatis映射问题

1

mybatis

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

Tomcat提交表单报错

0

1

mybatis spring

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

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Spring的IOC在JDBC或者Mybatis具体是怎么实现的？

0

1

spring

class="cursor-pointer"> 详细描述

该问题已被官方收录

阿里云mysql远程Access denied for user 'root'

1

数据库

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

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导入junit包出错

1

junit

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码

  @Test
    public void test1() {
        Student student = new Student();
        student.setId("010");
        student.setAge(15);
        student.setName("哈哈");
        student.setSex("女");
        studentService.saveStudent(student);
        System.out.println(student);
        }

java.lang.Exception: No runnable methods

at org.junit.runners.BlockJUnit4ClassRunner.validateInstanceMethods(BlockJUnit4ClassRunner.java:166)
	at org.junit.runners.BlockJUnit4ClassRunner.collectInitializationErrors(BlockJUnit4ClassRunner.java:102)
	at org.junit.runners.ParentRunner.validate(ParentRunner.java:344)
	at org.junit.runners.ParentRunner.<init>(ParentRunner.java:74)
	at org.junit.runners.BlockJUnit4ClassRunner.<init>(BlockJUnit4ClassRunner.java:55)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.<init>(SpringJUnit4ClassRunner.java:104)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at org.junit.internal.builders.AnnotatedBuilder.buildRunner(AnnotatedBuilder.java:31)
	at org.junit.vintage.engine.discovery.DefensiveAllDefaultPossibilitiesBuilder$DefensiveAnnotatedBuilder.buildRunner(DefensiveAllDefaultPossibilitiesBuilder.java:74)
	at org.junit.internal.builders.AnnotatedBuilder.runnerForClass(AnnotatedBuilder.java:24)
	at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
	at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:29)
	at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:57)
	at org.junit.vintage.engine.discovery.TestClassRequestResolver.createRunnerTestDescriptor(TestClassRequestResolver.java:54)
	at org.junit.vintage.engine.discovery.VintageDiscoverer.lambda$discover$0(VintageDiscoverer.java:53)
	at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
	at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
	at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175)
	at java.util.Iterator.forEachRemaining(Iterator.java:116)
	at java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1801)
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
	at java.util.stream.StreamSpliterators$WrappingSpliterator.forEachRemaining(StreamSpliterators.java:312)
	at java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:743)
	at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
	at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
	at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
	at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)
	at org.junit.vintage.engine.discovery.VintageDiscoverer.discover(VintageDiscoverer.java:55)
	at org.junit.vintage.engine.VintageTestEngine.discover(VintageTestEngine.java:65)
	at org.junit.platform.launcher.core.DefaultLauncher.discoverEngineRoot(DefaultLauncher.java:130)
	at org.junit.platform.launcher.core.DefaultLauncher.discoverRoot(DefaultLauncher.java:117)
	at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:90)
	at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:65)
	at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

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idea中运行的maven项目时间长了后报内存不足的错误，项目无法继续运行

0

1

maven

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图