IT修真院·坑乎 | Java(后端),CSS(前端),JavaScript(前端),PM(产品经理),UI(交互设计),QA(测试),Android(安卓APP),iOS(苹果APP),OP(运维),Python(后端)日常在线问答学习平台

IT修真院·坑乎 | Java(后端),CSS(前端),JavaScript(前端),PM(产品经理),UI(交互设计),QA(测试),Android(安卓APP),iOS(苹果APP),OP(运维),Python(后端)日常在线问答学习平台

咨询电话 : 010-59478634

全部问题

已收录问题

未收录问题

没有找到答案，去提问>>>

该问题已被官方收录

运用AOP编写日志管理时出现无此方法错误

1

1

aop

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

resin服务器无法部署war包

1

1

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

该问题已被官方收录

使用原生JDBC连接数据库是否需要设计成三层架构？

0

1

JDBC

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

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

springboot项目结构

1

1

springboot

class="cursor-pointer"> 详细描述

该问题已被官方收录

request.getServerPort()方法无法获得正确的端口号

1

1

Nginx

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 源码

server {
    listen 8080;
    server_name localhost;
    location / {
        proxy_pass http://192.168.1.100:8081;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }
}

该问题已被官方收录

在使用redis缓存时如何将业务逻辑与缓存之间解耦

1

1

缓存相关

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 源码

   @Override
    public User getUserById(int id) throws Exception {
        //find  cache
        Object object = jedisCache.get("user"+id);
        // if exist,return
        if (object!=null){
            return (User)object;
        }
        // if not exist,find user
        User user = userDAO.getUserById(id);
        jedisCache.set("user"+id,user);
        return user;
    }

该问题已被官方收录

与Mysql数据库相连，出现时区问题

1

1

spring 数据库

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码

  <bean id="dataSource"
          class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/TEST01?"/>
        <property name="username" value="root"/>
        <property name="password" value="Hwb_1995"/>
    </bean>

该问题已被官方收录

上传图片时报错

1

1

图片上传

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码

    <!--注：如提示报错，先升级基础包版，无法解决可联系技术支持
      短信api
    -->
    <dependency>
      <groupId>com.aliyun</groupId>
      <artifactId>aliyun-java-sdk-core</artifactId>
      <version>3.6.0</version>
    </dependency>
    <dependency>
      <groupId>com.aliyun</groupId>
      <artifactId>aliyun-java-sdk-dysmsapi</artifactId>
      <version>1.1.0</version>
    </dependency>


    <!--邮件相关-->
    <!--  START    -->
    <dependency>
      <groupId>org.apache.httpcomponents</groupId>
      <artifactId>httpcore</artifactId>
      <version>4.3.1</version>
    </dependency>
    <dependency>
      <groupId>org.apache.httpcomponents</groupId>
      <artifactId>httpmime</artifactId>
      <version>4.3.1</version>
    </dependency>
    <dependency>
      <groupId>org.apache.httpcomponents</groupId>
      <artifactId>httpclient-cache</artifactId>
      <version>4.3.1</version>
    </dependency>
    <dependency>
      <groupId>org.apache.httpcomponents</groupId>
      <artifactId>httpclient</artifactId>
      <version>4.3.1</version>
    </dependency>
  <!--  <dependency>
      <groupId>net.sf.json-lib</groupId>
      <artifactId>json-lib</artifactId>
      <version>2.4</version>
      <classifier>jdk15</classifier>
    </dependency>-->
    <!--  END   -->

    <!-- 图片相关 -->
    <dependency>
      <groupId>com.aliyun.oss</groupId>
      <artifactId>aliyun-sdk-oss</artifactId>
      <version>2.8.3</version>
    </dependency>

该问题已被官方收录

映射文件中 sql语句全都出现标红运行却没问题

2

1

mybatis

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

去第页

Copyright ©2015 北京葡萄藤信息技术有限公司 All Rights Reserved | 京ICP备15035574号-1