#HAVE

mysql union出错: "Every derived table must have its own alias"

SELECTcount(*)from(SELECTprovince_codeasarea_id,count(*)fromt_cas_rural_selectedGROUPBYprovince_codeUNIONallSELECTcity_codeasarea_id,COUNT(*)fromt_cas_rural_sel...

POJ 1659 Frogs' Neighborhood(可图性判定—Havel-Hakimi定理)【超详解】

TimeLimit:5000MS MemoryLimit:10000KTotalSubmissions:9897 Accepted:4137 SpecialJudgeDescription未名湖附近共有N个大小湖泊L1,L2,...,Ln(其中包括未名湖),每个湖泊Li里住着一只青蛙Fi(...

PHP错误:Forbidden You don't have permission to access / on this server.

今天在测试一个php程序的时候,发现这个问题:ForbiddenYoudon'thavepermissiontoaccess/onthisserver. 开始的时候我是用http://localhost/test.php进行的测试,没有发现问题,后来要在内网测试一下就要用IP地址进行那个访问了,如:http:...

The parent project must have a packaging type of POM

在Eclipse中使用Maven添加模块时报错:TheparentprojectmusthaveapackagingtypeofPOM解决办法:是将pom.xml中的 <packaging>jar</packaging>改成 <packaging>pom</...

1023. Have Fun with Numbers (20)

Noticethatthenumber123456789isa9-digitnumberconsistingexactlythenumbersfrom1to9,withnoduplication.Doubleitwewillobtain246913578,whichhappenstobeanother9-digitnu...
代码星球 ·2020-04-08

SQL Server 2008R2安装错误—“is not a valid login or you do have permission”

 https://blog.csdn.net/wangwenru6688/article/details/50707239【问题】    到最后安装进度都快完成的时候,弹出提示框,提示“isnotavalidloginoryoudohavepermissio...

Jmeter执行java脚本结束时提示:The JVM should have exited but did not.

使用jmeter对dubbo进行压测时,需要使用jmeter的sampler里的java请求 使用./jmeter.sh-n-ttest.jmx-ltest.jmx-o-etest后台启动任务,执行结束出现“TheJVMshouldhaveexitedbutdidnot.”现象,jme...

Intelli系列代理部分报错:You have JVM property https.proxyHost set..

  YouhaveJVMpropertyhttps.proxyHostsetto'...'.Thismayleadtoincorrectbehaviour.ProxyshouldbesetinSettings|Proxy  Mac环境下:/usr/libexec/PlistBud...

You must have a TTY to run sudo

1、方法一,给命令行添加ttyssh-tuser@foo.com2、使用sudovisudo修改配置:Defaults:user!requiretty表示用户user使用sudo命令时无需拥有tty...
代码星球 ·2020-04-06

idea中web.xml报错 Servlet should have a mapping

配置springmvc时,报错,实际mapping已经写了,错误截图如下:搜索无果,后来发现是工程的web.xml位置配置错误,因为我之前换过根目录位置。 修改方法: 打开ProjectStructure界面,Modules>Web>Deploymentdescriptor,修改正确的位...

intellij-maven-imports-have-broken-classpath

    公司自己搭得maven私服,然后使用git下载公司mvn的依赖包时候,报错:      之后再idea里面发现依赖的jar包有红色的错误信息,提示mavenimportshavebrokenclasspath。&...

Field 'id' doesn't have a default value

Spring项目中设置主键的时候通过@Id@GeneratedValue(strategy=GenerationType.IDENTITY)则在建表的时候,主键应该要设置自增,否则的话,就会报这个错误.  ...
代码星球 ·2020-04-05

Wamp错误: Forbidden You don't have permission to access / on this server.

找到php的配置文件httpd.conf(找不到的话看这篇:http://www.cnblogs.com/liulangmao/p/3569807.html)在原有的位置文件中找到配置节<Directory/>OptionsFollowSymLinksAllowOverrideNoneOrderdeny,a...

配置apache2.4 You don't have permission to access / on this server.

问题描述阿里云,云服务器ECS使用ip访问出现无法访问解决方法:设置安全组配置-》配置规则-》添加安全组规则选择http协议     设置成功后访问出现  Youdon'thavepermissiontoaccess/onthisserver.&nb...

Maven错误:“No goals have been specified for this build...”问题解决

如图出现如下错误:解决方法如下:1、(未测试)在pom.xml添加如下配置:<build><defaultGoal>compile</defaultGoal></build>2、直接在运行的命令行上加入://执行mvncleancompiletest//打包mvnclea...
代码星球 ·2020-04-04
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