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该问题已被官方收录

win10 中的 memcached每次重启都连接不上

1

memcache

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

Redis升级高版本报错解决方法

1

redis

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 源码

java.lang.NoClassDefFoundError: org/apache/commons/pool2/impl/GenericObjectPoolConfig
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2957)
at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1210)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1690)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571)
at com.huxin.utils.HuDaiApiListener.contextInitialized(HuDaiApiListener.java:33)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4994)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5492)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:649)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1083)
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1879)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.pool2.impl.GenericObjectPoolConfig
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1720)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571)
... 21 more

该问题已被官方收录

启动jmeter内存溢出

1

压测

class="cursor-pointer"> 详细描述

该问题已被官方收录

springboot在配置日志的文件的时候，提示找不到类文件，

0

1

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码

<?xml version="1.0" encoding="UTF-8"?>
<configuration>

    <!-- 日志根目录-->
    <springProperty scope="context" name="LOG_HOME" source="logging.path" defaultValue="C:/LOG"/>

    <!-- 日志级别 -->
    <springProperty scope="context" name="LOG_ROOT_LEVEL" source="logging.level.root" defaultValue="INFO"/>

    <!--  标识这个"STDOUT" 将会添加到这个logger -->
    <springProperty scope="context" name="STDOUT" source="log.stdout" defaultValue="STDOUT"/>

    <!-- 日志文件名称-->
    <property name="LOG_PREFIX" value="spring-boot-logback" />

    <!-- 日志文件编码-->
    <property name="LOG_CHARSET" value="UTF-8" />

    <!-- 日志文件路径+日期-->
    <property name="LOG_DIR" value="${LOG_HOME}/%d{yyyyMMdd}" />

    <!--对日志进行格式化-->
    <property name="LOG_MSG" value="- | [%X{requestUUID}] | [%d{yyyyMMdd HH:mm:ss.SSS}] | [%level] | [${HOSTNAME}] | [%thread] | [%logger{36}] | --> %msg|%n "/>

    <!--文件大小，默认10MB-->
    <property name="MAX_FILE_SIZE" value="50MB" />

    <!-- 配置日志的滚动时间 ，表示只保留最近 10 天的日志-->
    <property name="MAX_HISTORY" value="10"/>

    <!--输出到控制台-->
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <!-- 输出的日志内容格式化-->
        <layout class="ch.qos.logback.classic.PatternLayout">
            <pattern>${LOG_MSG}</pattern>
        </layout>
    </appender>

    <!--日志处理策略-->
    <!--输出到文件-->
    <appender name="0" class="ch.qos.logback.core.rolling.RollingFileAppender">
    </appender>

    <!-- 定义 ALL 日志的输出方式:-->
    <appender name="FILE_ALL" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <!--日志文件路径，日志文件名称-->
        <File>${LOG_HOME}/all_${LOG_PREFIX}.log</File>

        <!-- 设置滚动策略，当天的日志大小超过 ${MAX_FILE_SIZE} 文件大小时候，新的内容写入新的文件， 默认10MB -->
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">

            <!--日志文件路径，新的 ALL 日志文件名称，“ i ” 是个变量 -->
            <FileNamePattern>${LOG_DIR}/all_${LOG_PREFIX}%i.log</FileNamePattern>

            <!-- 配置日志的滚动时间 ，表示只保留最近 10 天的日志-->
            <MaxHistory>${MAX_HISTORY}</MaxHistory>

            <!--当天的日志大小超过 ${MAX_FILE_SIZE} 文件大小时候，新的内容写入新的文件， 默认10MB-->
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>${MAX_FILE_SIZE}</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>

        </rollingPolicy>

        <!-- 输出的日志内容格式化-->
        <layout class="ch.qos.logback.classic.PatternLayout">
            <pattern>${LOG_MSG}</pattern>
        </layout>
    </appender>

    <!-- 定义 ERROR 日志的输出方式:-->
    <appender name="FILE_ERROR" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <!-- 下面为配置只输出error级别的日志 -->
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>ERROR</level>
            <OnMismatch>DENY</OnMismatch>
            <OnMatch>ACCEPT</OnMatch>
        </filter>
        <!--日志文件路径，日志文件名称-->
        <File>${LOG_HOME}/err_${LOG_PREFIX}.log</File>

        <!-- 设置滚动策略，当天的日志大小超过 ${MAX_FILE_SIZE} 文件大小时候，新的内容写入新的文件， 默认10MB -->
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">

            <!--日志文件路径，新的 ERR 日志文件名称，“ i ” 是个变量 -->
            <FileNamePattern>${LOG_DIR}/err_${LOG_PREFIX}%i.log</FileNamePattern>

            <!-- 配置日志的滚动时间 ，表示只保留最近 10 天的日志-->
            <MaxHistory>${MAX_HISTORY}</MaxHistory>

            <!--当天的日志大小超过 ${MAX_FILE_SIZE} 文件大小时候，新的内容写入新的文件， 默认10MB-->
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>${MAX_FILE_SIZE}</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
        </rollingPolicy>

        <!-- 输出的日志内容格式化-->
        <layout class="ch.qos.logback.classic.PatternLayout">
            <Pattern>${LOG_MSG}</Pattern>
        </layout>
    </appender>

    <!-- additivity 设为false,则logger内容不附加至root ，配置以配置包下的所有类的日志的打印，级别是 ERROR-->

    <!--<logger name="org.springframework"     level="ERROR" />-->
    <!--<logger name="org.apache.commons"      level="ERROR" />-->
    <!--<logger name="org.apache.zookeeper"    level="ERROR"  />-->
    <!--<logger name="com.alibaba.dubbo.monitor" level="ERROR"/>-->
    <!--<logger name="com.alibaba.dubbo.remoting" level="ERROR" />-->


    <!--可以通过logger将不同模块的日志拆分到不通的文件夹-->
    <!--<logger name="com.john.dao" level="DEBUG" additivity="false">-->
        <!--<appender-ref ref="daoAppender" />-->
    <!--</logger>-->

    <!-- ${LOG_ROOT_LEVEL} 日志级别 -->
    <root level="${LOG_ROOT_LEVEL}">

        <!-- 标识这个"${STDOUT}"将会添加到这个logger -->
        <appender-ref ref="${STDOUT}"/>

        <!-- FILE_ALL 日志输出添加到 logger -->
        <appender-ref ref="FILE_ALL"/>

        <!-- FILE_ERROR 日志输出添加到 logger -->
        <appender-ref ref="FILE_ERROR"/>
    </root>

</configuration>

该问题已被官方收录

与el表达式结合的时间转换标签的写法，

1

时间转换(C标签)

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 源码

<% 
Date date=new Date(${time});
out.pring(date.toString());
%>

该问题已被官方收录

spring boot和mybatis使用的问题；

1

springboot

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 源码

代码：
@SpringBootApplication
@MapperScan(basePackages="com.jnshuboot.dao")
publicclassDemobootApplication{

publicstaticvoidmain(String[]args){
SpringApplication.run(DemobootApplication.class,args);
System.out.println("springbootsuccess");
}
}

pom文件
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.1</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency>
</dependencies>

Spring boot的配置文件；
#数据库连接相关配置
spring.datasource.url=jdbc:mysql://localhost:3306/task5?useUnicode=true&characterEncoding=utf-8
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.driver-class-name=com.mysql.jdbc.Driver

mybatis.mapper-locations=classpath:mapper/engineerMapper.xml
mybatis.typeAliasesPackage=com.jnshuboot.pojo

C:\gongzuo\Java\jdk1.8.0_171\bin\java.exe -XX:TieredStopAtLevel=1 -noverify -Dspring.output.ansi.enabled=always -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=50283 -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Djava.rmi.server.hostname=localhost -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabled=true "-javaagent:C:\gongzuo\JetBrains\IntelliJ IDEA 2018.1.4\lib\idea_rt.jar=50284:C:\gongzuo\JetBrains\IntelliJ IDEA 2018.1.4\bin" -Dfile.encoding=UTF-8 -classpath C:\gongzuo\Java\jdk1.8.0_171\jre\lib\charsets.jar;C:\gongzuo\Java\jdk1.8.0_171\jre\lib\deploy.jar;C:\gongzuo\Java\jdk1.8.0_171\jre\lib\ext\access-bridge-64.jar;C:\gongzuo\Java\jdk1.8.0_171\jre\lib\ext\cldrdata.jar;C:\gongzuo\Java\jdk1.8.0_171\jre\lib\ext\dnsns.jar;C:\gongzuo\Java\jdk1.8.0_171\jre\lib\ext\jaccess.jar;C:\gongzuo\Java\jdk1.8.0_171\jre\lib\ext\jfxrt.jar;C:\gongzuo\Java\jdk1.8.0_171\jre\lib\ext\localedata.jar;C:\gongzuo\Java\jdk1.8.0_171\jre\lib\ext\nashorn.jar;C:\gongzuo\Java\jdk1.8.0_171\jre\lib\ext\sunec.jar;C:\gongzuo\Java\jdk1.8.0_171\jre\lib\ext\sunjce_provider.jar;C:\gongzuo\Java\jdk1.8.0_171\jre\lib\ext\sunmscapi.jar;C:\gongzuo\Java\jdk1.8.0_171\jre\lib\ext\sunpkcs11.jar;C:\gongzuo\Java\jdk1.8.0_171\jre\lib\ext\zipfs.jar;C:\gongzuo\Java\jdk1.8.0_171\jre\lib\javaws.jar;C:\gongzuo\Java\jdk1.8.0_171\jre\lib\jce.jar;C:\gongzuo\Java\jdk1.8.0_171\jre\lib\jfr.jar;C:\gongzuo\Java\jdk1.8.0_171\jre\lib\jfxswt.jar;C:\gongzuo\Java\jdk1.8.0_171\jre\lib\jsse.jar;C:\gongzuo\Java\jdk1.8.0_171\jre\lib\management-agent.jar;C:\gongzuo\Java\jdk1.8.0_171\jre\lib\plugin.jar;C:\gongzuo\Java\jdk1.8.0_171\jre\lib\resources.jar;C:\gongzuo\Java\jdk1.8.0_171\jre\lib\rt.jar;C:\gongzuofile\demoboot\target\classes;C:\Users\24569\.m2\repository\org\springframework\boot\spring-boot-starter-web\2.0.4.RELEASE\spring-boot-starter-web-2.0.4.RELEASE.jar;C:\Users\24569\.m2\repository\org\springframework\boot\spring-boot-starter\2.0.4.RELEASE\spring-boot-starter-2.0.4.RELEASE.jar;C:\Users\24569\.m2\repository\org\springframework\boot\spring-boot\2.0.4.RELEASE\spring-boot-2.0.4.RELEASE.jar;C:\Users\24569\.m2\repository\org\springframework\boot\spring-boot-autoconfigure\2.0.4.RELEASE\spring-boot-autoconfigure-2.0.4.RELEASE.jar;C:\Users\24569\.m2\repository\org\springframework\boot\spring-boot-starter-logging\2.0.4.RELEASE\spring-boot-starter-logging-2.0.4.RELEASE.jar;C:\Users\24569\.m2\repository\ch\qos\logback\logback-classic\1.2.3\logback-classic-1.2.3.jar;C:\Users\24569\.m2\repository\ch\qos\logback\logback-core\1.2.3\logback-core-1.2.3.jar;C:\Users\24569\.m2\repository\org\apache\logging\log4j\log4j-to-slf4j\2.10.0\log4j-to-slf4j-2.10.0.jar;C:\Users\24569\.m2\repository\org\apache\logging\log4j\log4j-api\2.10.0\log4j-api-2.10.0.jar;C:\Users\24569\.m2\repository\org\slf4j\jul-to-slf4j\1.7.25\jul-to-slf4j-1.7.25.jar;C:\Users\24569\.m2\repository\javax\annotation\javax.annotation-api\1.3.2\javax.annotation-api-1.3.2.jar;C:\Users\24569\.m2\repository\org\yaml\snakeyaml\1.19\snakeyaml-1.19.jar;C:\Users\24569\.m2\repository\org\springframework\boot\spring-boot-starter-json\2.0.4.RELEASE\spring-boot-starter-json-2.0.4.RELEASE.jar;C:\Users\24569\.m2\repository\com\fasterxml\jackson\core\jackson-databind\2.9.6\jackson-databind-2.9.6.jar;C:\Users\24569\.m2\repository\com\fasterxml\jackson\core\jackson-annotations\2.9.0\jackson-annotations-2.9.0.jar;C:\Users\24569\.m2\repository\com\fasterxml\jackson\core\jackson-core\2.9.6\jackson-core-2.9.6.jar;C:\Users\24569\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.9.6\jackson-datatype-jdk8-2.9.6.jar;C:\Users\24569\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.9.6\jackson-datatype-jsr310-2.9.6.jar;C:\Users\24569\.m2\repository\com\fasterxml\jackson\module\jackson-module-parameter-names\2.9.6\jackson-module-parameter-names-2.9.6.jar;C:\Users\24569\.m2\repository\org\springframework\boot\spring-boot-starter-tomcat\2.0.4.RELEASE\spring-boot-starter-tomcat-2.0.4.RELEASE.jar;C:\Users\24569\.m2\repository\org\apache\tomcat\embed\tomcat-embed-core\8.5.32\tomcat-embed-core-8.5.32.jar;C:\Users\24569\.m2\repository\org\apache\tomcat\embed\tomcat-embed-el\8.5.32\tomcat-embed-el-8.5.32.jar;C:\Users\24569\.m2\repository\org\apache\tomcat\embed\tomcat-embed-websocket\8.5.32\tomcat-embed-websocket-8.5.32.jar;C:\Users\24569\.m2\repository\org\hibernate\validator\hibernate-validator\6.0.11.Final\hibernate-validator-6.0.11.Final.jar;C:\Users\24569\.m2\repository\javax\validation\validation-api\2.0.1.Final\validation-api-2.0.1.Final.jar;C:\Users\24569\.m2\repository\org\jboss\logging\jboss-logging\3.3.2.Final\jboss-logging-3.3.2.Final.jar;C:\Users\24569\.m2\repository\com\fasterxml\classmate\1.3.4\classmate-1.3.4.jar;C:\Users\24569\.m2\repository\org\springframework\spring-web\5.0.8.RELEASE\spring-web-5.0.8.RELEASE.jar;C:\Users\24569\.m2\repository\org\springframework\spring-beans\5.0.8.RELEASE\spring-beans-5.0.8.RELEASE.jar;C:\Users\24569\.m2\repository\org\springframework\spring-webmvc\5.0.8.RELEASE\spring-webmvc-5.0.8.RELEASE.jar;C:\Users\24569\.m2\repository\org\springframework\spring-aop\5.0.8.RELEASE\spring-aop-5.0.8.RELEASE.jar;C:\Users\24569\.m2\repository\org\springframework\spring-context\5.0.8.RELEASE\spring-context-5.0.8.RELEASE.jar;C:\Users\24569\.m2\repository\org\springframework\spring-expression\5.0.8.RELEASE\spring-expression-5.0.8.RELEASE.jar;C:\Users\24569\.m2\repository\org\slf4j\slf4j-api\1.7.25\slf4j-api-1.7.25.jar;C:\Users\24569\.m2\repository\org\springframework\spring-core\5.0.8.RELEASE\spring-core-5.0.8.RELEASE.jar;C:\Users\24569\.m2\repository\org\springframework\spring-jcl\5.0.8.RELEASE\spring-jcl-5.0.8.RELEASE.jar;C:\Users\24569\.m2\repository\org\mybatis\mybatis\3.4.1\mybatis-3.4.1.jar;C:\Users\24569\.m2\repository\mysql\mysql-connector-java\5.1.6\mysql-connector-java-5.1.6.jar;C:\Users\24569\.m2\repository\org\mybatis\mybatis-spring\1.3.1\mybatis-spring-1.3.1.jar com.jnshuboot.demoboot.DemobootApplication

.   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.0.4.RELEASE)

2018-09-01 22:52:06.686  INFO 41352 --- [           main] c.j.demoboot.DemobootApplication         : Starting DemobootApplication on DESKTOP-429TKN1 with PID 41352 (C:\gongzuofile\demoboot\target\classes started by 24569 in C:\gongzuofile\demoboot)
2018-09-01 22:52:06.688  INFO 41352 --- [           main] c.j.demoboot.DemobootApplication         : No active profile set, falling back to default profiles: default
2018-09-01 22:52:06.700  INFO 41352 --- [           main] o.s.core.annotation.AnnotationUtils      : Failed to introspect annotations on class com.jnshuboot.demoboot.DemobootApplication: java.lang.annotation.AnnotationFormatError: Invalid default: public abstract java.lang.Class org.mybatis.spring.annotation.MapperScan.factoryBean()
2018-09-01 22:52:06.903 ERROR 41352 --- [           main] o.s.boot.SpringApplication               : Application run failed

java.lang.annotation.AnnotationFormatError: Invalid default: public abstract java.lang.Class org.mybatis.spring.annotation.MapperScan.factoryBean()
	at java.lang.reflect.Method.getDefaultValue(Method.java:612) ~[na:1.8.0_171]
	at sun.reflect.annotation.AnnotationType.<init>(AnnotationType.java:132) ~[na:1.8.0_171]
	at sun.reflect.annotation.AnnotationType.getInstance(AnnotationType.java:85) ~[na:1.8.0_171]
	at sun.reflect.annotation.AnnotationParser.parseAnnotation2(AnnotationParser.java:266) ~[na:1.8.0_171]
	at sun.reflect.annotation.AnnotationParser.parseAnnotations2(AnnotationParser.java:120) ~[na:1.8.0_171]
	at sun.reflect.annotation.AnnotationParser.parseAnnotations(AnnotationParser.java:72) ~[na:1.8.0_171]
	at java.lang.Class.createAnnotationData(Class.java:3521) ~[na:1.8.0_171]
	at java.lang.Class.annotationData(Class.java:3510) ~[na:1.8.0_171]
	at java.lang.Class.getAnnotations(Class.java:3446) ~[na:1.8.0_171]
	at org.springframework.core.type.StandardAnnotationMetadata.<init>(StandardAnnotationMetadata.java:70) ~[spring-core-5.0.8.RELEASE.jar:5.0.8.RELEASE]
	at org.springframework.beans.factory.annotation.AnnotatedGenericBeanDefinition.<init>(AnnotatedGenericBeanDefinition.java:58) ~[spring-beans-5.0.8.RELEASE.jar:5.0.8.RELEASE]
	at org.springframework.context.annotation.AnnotatedBeanDefinitionReader.doRegisterBean(AnnotatedBeanDefinitionReader.java:216) ~[spring-context-5.0.8.RELEASE.jar:5.0.8.RELEASE]
	at org.springframework.context.annotation.AnnotatedBeanDefinitionReader.registerBean(AnnotatedBeanDefinitionReader.java:145) ~[spring-context-5.0.8.RELEASE.jar:5.0.8.RELEASE]
	at org.springframework.context.annotation.AnnotatedBeanDefinitionReader.register(AnnotatedBeanDefinitionReader.java:135) ~[spring-context-5.0.8.RELEASE.jar:5.0.8.RELEASE]
	at org.springframework.boot.BeanDefinitionLoader.load(BeanDefinitionLoader.java:158) ~[spring-boot-2.0.4.RELEASE.jar:2.0.4.RELEASE]
	at org.springframework.boot.BeanDefinitionLoader.load(BeanDefinitionLoader.java:135) ~[spring-boot-2.0.4.RELEASE.jar:2.0.4.RELEASE]
	at org.springframework.boot.BeanDefinitionLoader.load(BeanDefinitionLoader.java:127) ~[spring-boot-2.0.4.RELEASE.jar:2.0.4.RELEASE]
	at org.springframework.boot.SpringApplication.load(SpringApplication.java:704) [spring-boot-2.0.4.RELEASE.jar:2.0.4.RELEASE]
	at org.springframework.boot.SpringApplication.prepareContext(SpringApplication.java:393) [spring-boot-2.0.4.RELEASE.jar:2.0.4.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:328) [spring-boot-2.0.4.RELEASE.jar:2.0.4.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1258) [spring-boot-2.0.4.RELEASE.jar:2.0.4.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1246) [spring-boot-2.0.4.RELEASE.jar:2.0.4.RELEASE]
at com.jnshuboot.demoboot.DemobootApplication.main(DemobootApplication.java:15) [classes/:na]

该问题已被官方收录

redis+数据库数据展示报错

0

1

redis

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码

@Override
    public List<Student> studentList() {
        List<Student> studentList =   (List<Student>) redisUtil.get("studentList");
        if (studentList != null) {
            //todo 从缓存读取数据
            logger.error("=============缓存=========");
            return studentList;
        } else {
            logger.error("==========数据库==========");
            //todo List<Student> userList = 从数据库取
            studentList = studentDao.selectAll();
            redisUtil.set("studentList", studentList, 60 * 60L);
        }

        //todo 业务逻辑
        return studentList;
    }

该问题已被官方收录

Memcache缓存加载，加载不成功

0

1

缓存相关

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码

 //查询所有数据信息
    @Override
    public List<Paper> queryAllPaper() throws Exception {
        List<Paper> paperList = memcachedClient.get("paperList");
        try {
            if (paperList != null) {
                logger.info("---从缓存中查询所有---");
                paperList =memcachedClient.get("paperList");
                logger.info("---从缓存查询ID等于448的记录:"+memcachedClient.get("448")+"---");
                logger.info("---从数据库查询ID等于448的记录:"+paperDao.queryById(448)+"---");
            } else {
                logger.info("---从数据库中查询所有---");
                paperList = paperDao.queryAllPaper();
                boolean list = memcachedClient.set("paperList", 0, paperList);
                logger.info("---新增所有数据缓存:" + list+"---");
                logger.info("---从缓存查询ID等于448的记录:"+memcachedClient.get("448")+"---");
                logger.info("---从数据库查询ID等于448的记录:"+paperDao.queryById(448)+"---");
            }
        } catch (Throwable t) {
            t.printStackTrace();
        }
        return paperDao.queryAllPaper();
    }



    //删除论文
    @Override
    public boolean deletePaperById(long id) throws Exception {
        boolean delete = false;
        logger.info("即将删除的id："+id);
        logger.info("memcachedClient.get(String.valueOf(id)):"+memcachedClient.get(String.valueOf(id)));
        if (memcachedClient.get(String.valueOf(id)) != null) {
            delete = memcachedClient.delete(String.valueOf(id));
            logger.info("---删除缓存数据：" + delete+"---");
        } else {
            logger.info("---没有该数据可以删除的数据---");
        }
        if (delete) {
            memcachedClient.flushAll();
            logger.info("---删除信息，刷新缓存---");

        }
        return paperDao.deletePaperById(id);
    }

[INFO ] 2018-08-17 06:39:49,253 method:com.controller.PaperController.queryAllPaper(PaperController.java:34) 跳转到查询所有数据页面.
[INFO ] 2018-08-17 06:39:49,254 method:com.aop.AopController.printExecTime(AopController.java:66) com.controller.PaperController.queryAllPaper Controller 类方法执行耗时: 852
17-Aug-2018 06:39:49.314 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory C:\Program Files\Apache Software Foundation\Tomcat 8.0\webapps\manager has finished in 76 ms
[INFO ] 2018-08-17 06:46:26,688 method:com.controller.PaperController.deleteUser(PaperController.java:55) controller:开始删除数据...
[INFO ] 2018-08-17 06:46:26,689 method:com.aop.AopImpl.timeAround(AopImpl.java:36) ---进入Database类方法切面中---

[INFO ] 2018-08-17 06:46:26,690 method:com.aop.AopImpl.timeAround(AopImpl.java:45) ---开始执行时间:2018-08-17 06:46:26
[INFO ] 2018-08-17 06:46:26,690 method:com.service.impl.PaperServiceImpl.deletePaperById(PaperServiceImpl.java:45) 即将删除的id：457
[INFO ] 2018-08-17 06:46:26,700 method:com.service.impl.PaperServiceImpl.deletePaperById(PaperServiceImpl.java:46) memcachedClient.get(String.valueOf(id)):null
[INFO ] 2018-08-17 06:46:26,712 method:com.service.impl.PaperServiceImpl.deletePaperById(PaperServiceImpl.java:51) ---没有该数据可以删除的数据---
[INFO ] 2018-08-17 06:46:35,238 method:com.aop.AopImpl.timeAround(AopImpl.java:36) ---进入Database类方法切面中---

[INFO ] 2018-08-17 06:46:35,239 method:com.aop.AopImpl.timeAround(AopImpl.java:45) ---开始执行时间:2018-08-17 06:46:35
[INFO ] 2018-08-17 06:46:45,866 method:org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:316) Loading XML bean definitions from class path resource [org/springframework/jdbc/support/sql-error-codes.xml]
[INFO ] 2018-08-17 06:46:45,896 method:org.springframework.jdbc.support.SQLErrorCodesFactory.<init>(SQLErrorCodesFactory.java:126) SQLErrorCodes loaded: [DB2, Derby, H2, HSQL, Informix, MS-SQL, MySQL, Oracle, PostgreSQL, Sybase]
[ERROR] 2018-08-17 06:46:45,907 method:com.aop.AopImpl.timeAround(AopImpl.java:50) ---统计DataBase方法执行耗时环绕通知出错---
org.springframework.dao.RecoverableDataAccessException: 
### Error updating database.  Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

The last packet successfully received from the server was 416,483 milliseconds ago.  The last packet sent successfully to the server was 19,130 milliseconds ago.
### The error may involve com.dao.PaperDao.deletePaperById-Inline
### The error occurred while setting parameters
### SQL: DELETE FROM paper WHERE paper_id=?
### Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

The last packet successfully received from the server was 416,483 milliseconds ago.  The last packet sent successfully to the server was 19,130 milliseconds ago.
; SQL []; Communications link failure

The last packet successfully received from the server was 416,483 milliseconds ago.  The last packet sent successfully to the server was 19,130 milliseconds ago.; nested exception is com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

该问题已被官方收录

Tuscany 服务端启动失败

2

1

SCA/SOA tuscany

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

短信接口类会报Json解析异常

1

第三方API调用

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码

IClientProfile profile = DefaultProfile.getProfile("cn-hangzhou", smsBean.getAccessKeyId(),smsBean.getAccessKeySecret());