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关于JSP中引入静态文件的路径问题

1

JSP

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

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使用公司服务器无法启动redis

0

1

redis

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

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无法获取MemcachedUtils工具类方法

1

memcache

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"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans.xsd">

    <!-- memcache
        枚举类型要想注入到类中，一定要先使用org.springframework.beans.factory.config.FieldRetrievingFactoryBean类将枚举类型进行转换
        将DefaultHashAlgorithm.KETAMA_HASH转换为KETAMA_HASH这个bean，
        然后在要注入的bean中使用<property name="hashAlg" ref="KETAMA_HASH" />引用即可。
     -->
    
    <bean id="KETAMA_HASH" class="org.springframework.beans.factory.config.FieldRetrievingFactoryBean">
        <property name="staticField" value="net.spy.memcached.DefaultHashAlgorithm.KETAMA_HASH" />
    </bean>

    <bean id="memcachedClient" class="net.spy.memcached.spring.MemcachedClientFactoryBean">

        <!-- 一个字符串，包括由空格或逗号分隔的主机或IP地址与端口号 -->
        <property name="servers" value="127.0.0.1:11211" />
        <!-- 指定要使用的协议(BINARY,TEXT),默认是TEXT -->
        <property name="protocol" value="BINARY" />
        <!-- 设置默认的转码器(默认以net.spy.memcached.transcoders.SerializingTranscoder) -->
        <property name="transcoder">
            <bean class="net.spy.memcached.transcoders.SerializingTranscoder">
                <property name="compressionThreshold" value="1024" />
            </bean>
        </property>
        <!-- 以毫秒为单位设置默认的操作超时时间 -->
        <property name="opTimeout" value="1000" />
        <property name="timeoutExceptionThreshold" value="1998" />
        <!-- 设置哈希算法 -->
        <property name="hashAlg" ref="KETAMA_HASH" />
        <!-- 设置定位器类型(ARRAY_MOD,CONSISTENT),默认是ARRAY_MOD -->
        <property name="locatorType" value="CONSISTENT" />
        <!-- 设置故障模式(取消，重新分配，重试)，默认是重新分配 -->
        <property name="failureMode" value="Redistribute" />
        <!-- 想使用Nagle算法，设置为true -->
        <property name="useNagleAlgorithm" value="false" />

    </bean>

    <bean id="memcachedManager" class="Task4.util.MemcachedUtils">
        <property name="memcachedClient" ref="memcachedClient" />
    </bean>

    <!-- 注入自己写的类 -->

</beans>

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mybatis搭建 ssm框架的时候，老是报一个错误

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" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<!-- 参考官网：http://www.mybatis.org/mybatis-3/zh/configuration.html#settings -->
<configuration>
    <!-- 全局配置 -->
    <settings>
        <!-- 使用列标签代替列名 -->
        <setting name="useColumnLabel" value="true"/>
        <!--不允许 JDBC 支持自动生成主键-->
        <setting name="useGeneratedKeys" value="false"/>
        <!--是否开启自动驼峰命名规则（camel case）映射，即从经典数据库列名 A_COLUMN 到经典 Java 属性名 aColumn 的类似映射。 -->
        <setting name="mapUnderscoreToCamelCase" value="true"/>
    </settings>
</configuration>

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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());

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@test不能正常使用

2

1

spring

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码

Cannot resolve symbol 'Test'

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tiles框架模版页面怎么配置

2

1

tiles

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

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idea配置tomcat后index.jsp页面运行失败

1

SSM

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

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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

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服务器部署RMI服务端时IP异常

0

1

分布式

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图