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该问题已被官方收录

跳过单元测试

0

1

maven

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

maven项目依赖冲突

1

spring mybatis

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 源码

添加的依赖
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>4.2.4.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>4.3.8.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>6.0.6</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>4.3.5.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.2.2</version>
        </dependency>

        <dependency>
            <groupId>c3p0</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.1.2</version>
        </dependency>

        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.2.1</version>
        </dependency>

D:\software\jdk\bin\java.exe -ea -Didea.test.cyclic.buffer.size=1048576 "-javaagent:D:\software\IDEA\IntelliJ IDEA 2018.1.4\lib\idea_rt.jar=49799:D:\software\IDEA\IntelliJ IDEA 2018.1.4\bin" -Dfile.encoding=UTF-8 -classpath "D:\software\IDEA\IntelliJ IDEA 2018.1.4\lib\idea_rt.jar;D:\software\IDEA\IntelliJ IDEA 2018.1.4\plugins\junit\lib\junit-rt.jar;D:\software\IDEA\IntelliJ IDEA 2018.1.4\plugins\junit\lib\junit5-rt.jar;D:\software\jdk\jre\lib\charsets.jar;D:\software\jdk\jre\lib\deploy.jar;D:\software\jdk\jre\lib\ext\access-bridge-64.jar;D:\software\jdk\jre\lib\ext\cldrdata.jar;D:\software\jdk\jre\lib\ext\dnsns.jar;D:\software\jdk\jre\lib\ext\jaccess.jar;D:\software\jdk\jre\lib\ext\jfxrt.jar;D:\software\jdk\jre\lib\ext\localedata.jar;D:\software\jdk\jre\lib\ext\nashorn.jar;D:\software\jdk\jre\lib\ext\sunec.jar;D:\software\jdk\jre\lib\ext\sunjce_provider.jar;D:\software\jdk\jre\lib\ext\sunmscapi.jar;D:\software\jdk\jre\lib\ext\sunpkcs11.jar;D:\software\jdk\jre\lib\ext\zipfs.jar;D:\software\jdk\jre\lib\javaws.jar;D:\software\jdk\jre\lib\jce.jar;D:\software\jdk\jre\lib\jfr.jar;D:\software\jdk\jre\lib\jfxswt.jar;D:\software\jdk\jre\lib\jsse.jar;D:\software\jdk\jre\lib\management-agent.jar;D:\software\jdk\jre\lib\plugin.jar;D:\software\jdk\jre\lib\resources.jar;D:\software\jdk\jre\lib\rt.jar;D:\java-project\springmybatisone\target\test-classes;D:\java-project\springmybatisone\target\classes;C:\Users\Administrator\.m2\repository\junit\junit\4.11\junit-4.11.jar;C:\Users\Administrator\.m2\repository\org\hamcrest\hamcrest-core\1.3\hamcrest-core-1.3.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-test\4.2.4.RELEASE\spring-test-4.2.4.RELEASE.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-core\4.2.4.RELEASE\spring-core-4.2.4.RELEASE.jar;C:\Users\Administrator\.m2\repository\commons-logging\commons-logging\1.2\commons-logging-1.2.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-context\4.3.8.RELEASE\spring-context-4.3.8.RELEASE.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-aop\4.3.8.RELEASE\spring-aop-4.3.8.RELEASE.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-beans\4.3.8.RELEASE\spring-beans-4.3.8.RELEASE.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-expression\4.3.8.RELEASE\spring-expression-4.3.8.RELEASE.jar;C:\Users\Administrator\.m2\repository\mysql\mysql-connector-java\6.0.6\mysql-connector-java-6.0.6.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-jdbc\4.3.5.RELEASE\spring-jdbc-4.3.5.RELEASE.jar;C:\Users\Administrator\.m2\repository\org\springframework\spring-tx\4.3.5.RELEASE\spring-tx-4.3.5.RELEASE.jar;C:\Users\Administrator\.m2\repository\org\mybatis\mybatis-spring\1.2.2\mybatis-spring-1.2.2.jar;C:\Users\Administrator\.m2\repository\c3p0\c3p0\0.9.1.2\c3p0-0.9.1.2.jar;C:\Users\Administrator\.m2\repository\org\mybatis\mybatis\3.2.1\mybatis-3.2.1.jar" com.intellij.rt.execution.junit.JUnitStarter -ideVersion5 -junit4 TestOne,addUser
六月 22, 2018 12:14:08 下午 org.springframework.test.context.support.DefaultTestContextBootstrapper getDefaultTestExecutionListenerClassNames
信息: Loaded default TestExecutionListener class names from location [META-INF/spring.factories]: [org.springframework.test.context.web.ServletTestExecutionListener, org.springframework.test.context.support.DirtiesContextBeforeModesTestExecutionListener, org.springframework.test.context.support.DependencyInjectionTestExecutionListener, org.springframework.test.context.support.DirtiesContextTestExecutionListener, org.springframework.test.context.transaction.TransactionalTestExecutionListener, org.springframework.test.context.jdbc.SqlScriptsTestExecutionListener]
六月 22, 2018 12:14:08 下午 org.springframework.test.context.support.DefaultTestContextBootstrapper instantiateListeners
信息: Could not instantiate TestExecutionListener [org.springframework.test.context.web.ServletTestExecutionListener]. Specify custom listener classes or make the default listener classes (and their required dependencies) available. Offending class: [javax/servlet/ServletContext]
六月 22, 2018 12:14:08 下午 org.springframework.test.context.support.DefaultTestContextBootstrapper getTestExecutionListeners
信息: Using TestExecutionListeners: [org.springframework.test.context.support.DirtiesContextBeforeModesTestExecutionListener@129a8472, org.springframework.test.context.support.DependencyInjectionTestExecutionListener@1b0375b3, org.springframework.test.context.support.DirtiesContextTestExecutionListener@2f7c7260, org.springframework.test.context.transaction.TransactionalTestExecutionListener@2d209079, org.springframework.test.context.jdbc.SqlScriptsTestExecutionListener@6bdf28bb]
六月 22, 2018 12:14:08 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
信息: Loading XML bean definitions from class path resource [applicationContext.xml]
六月 22, 2018 12:14:08 下午 org.springframework.context.support.GenericApplicationContext prepareRefresh
信息: Refreshing org.springframework.context.support.GenericApplicationContext@6be46e8f: startup date [Fri Jun 22 12:14:08 CST 2018]; root of context hierarchy
六月 22, 2018 12:14:09 下午 org.springframework.test.context.TestContextManager prepareTestInstance
严重: Caught exception while allowing TestExecutionListener [org.springframework.test.context.support.DependencyInjectionTestExecutionListener@1b0375b3] to prepare test instance [TestOne@12d3a4e9]
java.lang.IllegalStateException: Failed to load ApplicationContext
	at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124)
	at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:83)
	at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:117)
	at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:83)
	at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:228)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:230)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:289)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:291)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:249)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:89)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
	at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
	at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:193)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.execution.junit.IdeaTestRunner$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)
Caused by: java.lang.IllegalArgumentException: ResourceLoader must not be null
	at org.springframework.util.Assert.notNull(Assert.java:115)
	at org.springframework.core.io.support.ResourcePatternUtils.getResourcePatternResolver(ResourcePatternUtils.java:62)
	at org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider.setResourceLoader(ClassPathScanningCandidateComponentProvider.java:238)
	at org.springframework.context.annotation.ClassPathBeanDefinitionScanner.<init>(ClassPathBeanDefinitionScanner.java:167)
	at org.springframework.context.annotation.ClassPathBeanDefinitionScanner.<init>(ClassPathBeanDefinitionScanner.java:138)
	at org.springframework.context.annotation.ClassPathBeanDefinitionScanner.<init>(ClassPathBeanDefinitionScanner.java:111)
	at org.mybatis.spring.mapper.ClassPathMapperScanner.<init>(ClassPathMapperScanner.java:74)
	at org.mybatis.spring.mapper.MapperScannerConfigurer.postProcessBeanDefinitionRegistry(MapperScannerConfigurer.java:304)
	at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:118)
	at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:686)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:524)
	at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:125)
	at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:60)
	at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.delegateLoading(AbstractDelegatingSmartContextLoader.java:109)
	at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.loadContext(AbstractDelegatingSmartContextLoader.java:261)
	at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:98)
	at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:116)
	... 24 more

java.lang.IllegalStateException: Failed to load ApplicationContext

at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124)
	at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:83)
	at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:117)
	at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:83)
	at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:228)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:230)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:289)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:291)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:249)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:89)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
	at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
	at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:193)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.execution.junit.IdeaTestRunner$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)
Caused by: java.lang.IllegalArgumentException: ResourceLoader must not be null
	at org.springframework.util.Assert.notNull(Assert.java:115)
	at org.springframework.core.io.support.ResourcePatternUtils.getResourcePatternResolver(ResourcePatternUtils.java:62)
	at org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider.setResourceLoader(ClassPathScanningCandidateComponentProvider.java:238)
	at org.springframework.context.annotation.ClassPathBeanDefinitionScanner.<init>(ClassPathBeanDefinitionScanner.java:167)
	at org.springframework.context.annotation.ClassPathBeanDefinitionScanner.<init>(ClassPathBeanDefinitionScanner.java:138)
	at org.springframework.context.annotation.ClassPathBeanDefinitionScanner.<init>(ClassPathBeanDefinitionScanner.java:111)
	at org.mybatis.spring.mapper.ClassPathMapperScanner.<init>(ClassPathMapperScanner.java:74)
	at org.mybatis.spring.mapper.MapperScannerConfigurer.postProcessBeanDefinitionRegistry(MapperScannerConfigurer.java:304)
	at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:118)
	at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:686)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:524)
	at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:125)
	at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:60)
	at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.delegateLoading(AbstractDelegatingSmartContextLoader.java:109)
	at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.loadContext(AbstractDelegatingSmartContextLoader.java:261)
	at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:98)
	at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:116)
	... 24 more

Process finished with exit code -1

该问题已被官方收录

关于任务一当中在数据库当中插入100万条数据

0

1

class="cursor-pointer"> 详细描述

该问题已被官方收录

在做mybatis更新数据时测试类报错

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

创建sqlSessionFactory失败

1

spring

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

阿里云的轻量级服务器怎么才能连接上去

0

1

linux命令

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

Mybatis+spring 报错加载配置文件appliation配置文件

2

1

spring mybatis

class="cursor-pointer"> 详细描述

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd">

<context:annotation-config/>
        
        <context:component-scan base-package="com.fgh.Mybatis.service" />
        
        <context:property-placeholder location="classpath:db.properties" />
        
        <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
        destroy-method="close">
                <property name="driverClassName" value ="${driver}"/>
                <property name="url" value ="${url}"/>
                <property name="username" value="${username}"/>
                <property name="password" value="${password}"/>
                <property name="maxActive" value="10"></property>
                <property name="maxIdle" value="5"></property>
        </bean>

<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
                
                <property name="configLocation" value="SqlMapConfig.xml"/>
                
                <property name="dataSource" ref="dataSource"/>
        </bean>

<bean id="userMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">
                <property name="mapperInterface" value="com.fgh.Mybatis.dao.UserMapper"/>
                <property name="sqlSessionFactory" ref="sqlSessionFactory"/>
        </bean>
</beans>

class="cursor-pointer"> 错误截图

spring 4.13   idea 2018.1.2

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-orm</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context-support</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>${spring.version}</version>
    </dependency>
    
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>${spring.version}</version>
    </dependency>

<dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>${spring.version}</version>
    </dependency>

<dependency>
      <groupId>cglib</groupId>
      <artifactId>cglib-nodep</artifactId>
      <version>2.2</version>
    </dependency>

<dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.8.11</version>
    </dependency>

<dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.39</version>
    </dependency>
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.4.1</version>
    </dependency>
    
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.1</version>
    </dependency>

该问题已被官方收录

怎么用注解的方式配置spring，注解的方式和xml配置的方式有什么区别？

1

spring

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 源码

    <context:component-scan base-package="com.jnshu.demo.service"/>

    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
        <!-- 基本属性 url、user、password -->
        <property name="url" value="${jdbc_url}" />
        <property name="username" value="${jdbc_user}" />
        <property name="password" value="${jdbc_password}" />

        <!-- 配置获取连接等待超时的时间 -->
        <property name="maxWait" value="60000" />

        <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->
        <property name="timeBetweenEvictionRunsMillis" value="60000" />

        <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->
        <property name="minEvictableIdleTimeMillis" value="300000" />

        <property name="validationQuery" value="SELECT 'x'" />
        <property name="testWhileIdle" value="true" />
        <property name="testOnBorrow" value="false" />
        <property name="testOnReturn" value="false" />

        <!-- 打开PSCache，并且指定每个连接上PSCache的大小 -->
        <property name="poolPreparedStatements" value="true" />
        <property name="maxPoolPreparedStatementPerConnectionSize" value="20" />

        <!-- 配置监控统计拦截的filters -->
        <property name="filters" value="stat" />
    </bean>

    <!--sql  会话工厂-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--数据库连接池-->
        <property name="dataSource" ref="dataSource"/>
        <!--加载mybatis 全局配置-->
        <!--<property name="configLocation" value="mybatis-config.xml"/>-->
        <!--<property name="mapperLocations" value="mapper/**.xml"/>-->
    </bean>

该问题已被官方收录

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

数组下标越界，空指针异常

1

mybatis

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码





package org.sang.db;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.Properties;

/**
 * Created by sang on 17-1-13.
 */
public class DBUtils {
    private static  SqlSessionFactory sqlSessionFactory = null;
    private static final Class CLASS_LOCK = DBUtils.class;

    public static  SqlSessionFactory initSqlSessionFactory() {
        InputStream is = null;
        try {
            is = Resources.getResourceAsStream("mybatis-conf.xml");
        } catch (IOException e) {
            e.printStackTrace();
        }
        synchronized (CLASS_LOCK) {
            if (sqlSessionFactory == null) {
                sqlSessionFactory = new SqlSessionFactoryBuilder().build(is);
            }
        }
        return sqlSessionFactory;
    }

    public static SqlSession openSqlSession() {
        if (sqlSessionFactory == null)
            initSqlSessionFactory2();
        return sqlSessionFactory.openSession();
    }

    public static  SqlSessionFactory initSqlSessionFactory2() {
        InputStream cfgStream = null;
        Reader cfgReader = null;
        InputStream proStream = null;
        Reader proReader = null;
        Properties properties = null;
        try {
            cfgStream = Resources.getResourceAsStream("mybatis-conf.xml");
            cfgReader = new InputStreamReader(cfgStream);
            proStream = Resources.getResourceAsStream("db.properties");
            proReader = new InputStreamReader(proStream);
            properties = new Properties();
            properties.load(proReader);
            //获取密文用户名和密码
            String username = properties.getProperty("username");
            String password = properties.getProperty("password");
            //解密
            properties.setProperty("username", ((String) username).substring(0, username.indexOf("-")));
            properties.setProperty("password", ((String) password).substring(0, password.indexOf("-")));
        } catch (IOException e) {
            e.printStackTrace();
        }
        synchronized (CLASS_LOCK) {
            if (sqlSessionFactory == null) {
                sqlSessionFactory = new SqlSessionFactoryBuilder().build(cfgReader,properties);
            }
        }
        return sqlSessionFactory;
    }
}

以上为工具类
  @Test
    public void test1() {
        SqlSession sqlSession = null;
        try {
            sqlSession = DBUtils.openSqlSession();
            UserMapper mapper = sqlSession.getMapper(UserMapper.class);
            List<User> list = mapper.getUser("西安");
            System.out.println(list);
            for (User user : list) {
                System.out.println(user);
            }
            sqlSession.commit();
        } catch (Exception e) {
            System.err.println(e.getMessage());
            // sqlSession.rollback();
        } finally {
            if (sqlSession != null) {
                sqlSession.close();
            }
        }
    }
以上为测试方法
public List<User> getUser(@Param("address") String address);
以上为被调用的接口里面的方法 <resultMap id="u" type="org.sang.bean.User">
        <result column="user_name" property="username"/>
    </resultMap>
    <select id="getUser" resultMap="u" parameterType="String">
        select * from user2
        <if test="address!=null and address !=''">
            WHERE address LIKE concat('%',#{address},'%')
        </if>
    </select>
以上是被执行的sql