故事发生在云计算实验课上…… ** 故事发生在云计算实验课上……Step 1 在Xshell中登录自己的cloud虚拟机后,<sudo su ->切换到root用户Step 2 <~/tpcw/apache-tomcat-8.5.23/bin/startup.sh>启动虚拟机装好的TPC-W(an e-commerce website, which supports online shopping and payment)Step 3 Download Apache Jmeter from office website and unzipStep 4 解压后进入bin中找到 jmeter.bat 并双击(嗷,老师的文档这么写的,doubl...
1.环境win7/8/8.1 x64,Oracle 11g r2,jdk7 x642.问题第一次启动Oracle SQL Developer的时候会让我们填写Java.exe的路径,我在jdk安装目录下的bin中找到了java.exe,但是填写以后报如下错误:WARNING: Could not find jvm.cfg! in ‘C:\Program Files\Java\jdk1.7.0_17\jre\lib\jvm.cfg‘3.原因oracle 11g中安装的Oracle SQL Developer是32位的,而我们现在给他指定的java.exe却是64位的,所以会出现这种错误。4.解决方法1)从网...
const app = document.getElementById(‘app‘); app.innerHTML = `<h1>JavaScript DOM</h1><div class="item"></div> `;const item = document.querySelector(‘.item‘);console.log(item.parentNode); console.log(item.parentElement.parentElement);console.log(item.closest(‘#app‘)); console.log(item.closest(‘body‘)); 原文:https://www.cnblogs.com/Answer1215/p/12596289.html
今天在用struts2就行文件下载时出现如下错误: Servlet.service() for servlet default threw exception java.lang.IllegalArgumentException: Can not find a java.io.InputStream with the name [imageStream] in the invocation stack. Check the <param name="inputName"> tag specified forthis action. at org.apache.struts2.dispatcher.StreamResult.doExecute(StreamResult.java:189) at org.apache.struts2.dis...
在java中使用https访问数据时报异常:Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target需要使用keytool工具,将对应域名的证书导入到jdk的cacerts中,这个证书可以是*.crt,*.cer等证书cacerts包含了很多CA证书,位置在Java的安装目录: Java\jdk1.8.0_181\jre\lib\...
Solve java.util.MissingResourceException: Can‘t find bundle for base name com...config, locale zh_CNat java.util.ResourceBundle.throwMissingResourceException(ResourceBundle.java:836)at java.util.ResourceBundle.getBundleImpl(ResourceBundle.java:805)at java.util.ResourceBundle.getBundle(ResourceBundle.java:576) You know java is looking for a properties file in a specific locale. You may be baffled...
FindBugs 是一个静态分析工具,它可以检查类或者 JAR 文件,将字节码与一组缺陷模式进行对比以发现可能的问题,使用 FindBugs 可以在不实际运行程序的情况对软件进行分析。使用时最好将字节码对应的 java 文件选上,这样便可轻松的从报告文件中定位到出问题的源码,并进行相应的修改。eclipse 安装 findbugs 需要满足如下条件:eclipse 3.3 版本以上JRE/JDK 1.5 版本以上 findbugs在线更新路径为:http://findbugs.cs.umd.edu/ecli...
Suppose a sorted array is rotated at some pivot unknown to you beforehand.(i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 0 1 2).Find the minimum element.The array may contain duplicates.解题思路:参考Java for LeetCode 081 Search in Rotated Sorted Array II JAVA实现如下: public int findMin(int[] nums) {int left = 0, right = nums.length - 1, res = nums[0];while (left <= right) {res = Math.min(nums[left]...
break the loop at the last node which pointed to the entry.Given a binary tree, collect a tree‘s nodes as if you were doing this: Collect and remove all leaves, repeat until the tree is empty.Example:Given binary tree 1/ 2 3/ \ 4 5 Returns [4, 5, 3], [2], [1].ollowup: 每个node还是有left,right指针,但是结构并非tree,而是graph怎么算, 考虑有/无circular dependency 两种...
在安装logstash时出现如下报错:“could not find java; set JAVA_HOME or ensure java is in PATH chmod: cannot access ‘/etc/default/logstash’: No such file or directory warning: %post(logstash-1:6.6.0-1.noarch) scriptlet failed, exit status 1” could not find java; set JAVA_HOME or ensure java is in PATH chmod: cannot access ‘/etc/default/logstash’: No such file or directory warning: %post(logstas...
前几天安装ELK踩过的一个坑, 检查java环境以及es启动文件配置没发现问题网上查找原因不一而足which: no java in (/sbin:/usr/sbin:/bin:/usr/bin) 我这里解决问题的方法是建立软连接ln -s JAVA_HOME/bin/java /usr/bin/java原文:https://www.cnblogs.com/-xuzhankun/p/12348843.html
1.xp安装jmeter后启动,出现下面错误,找了很多方法试了,都没有用; 2.最后找到一个方法解决了[感谢无名大神],在环境变量PATH中添加:%SystemRoot%/system32;%SystemRoot%; 3.可以正常启动了;‘findstr‘ 不是内部或外部命令,也不是可运行的程序或批处理文件。Not able to find Java executable or version. Please check your Java installation.errorlevel=2请按任意键继续. . . 原文:http://www.cnblogs.com/AmilyWilly/p/...
安装了64位的Oracle数据库以及32位的Oracle客户端,在开始菜单中第一次打开客户端的SQL Developer时提示输入java.exe的路径,我选择了Oracle数据库自带的jdk路径,确定之后报错:百度查找解决办法,原因是64位的Oracle数据库中自带的jdk也是64位的,但安装的Oracle客户端是32位的,所以不兼容。 解决办法一般有两种做法: 1)从网上下载Oracle SQL Developer x64(http://www.oracle.com/technetwork/developer-tools/sql-develope...
并一路“next”就可安装成功。 第二种方式是下载Findbugs插件,将它放入Eclipse下的plusin文件夹,然后重启Eclipse即可。 3如何使用FindBugs 安装了Findbugs插件后。右击点击你要检查的项目选择【Find Bugs】->【Find Bugs】进行检查。要查看Findbugs检查出了哪些Bug,可以选择Windows菜单->Show View->Bug Explorer,打开Bug Explorer面板。如果想要查看某个Bug详细的信息,则可以选择Windows菜单->Open Perspective,然...
int res = 0,h = 0;2 public int findBottomLeftValue(TreeNode root) {3 findBottomLeftValue(root, 1);4 return res;5 }6 public void findBottomLeftValue(TreeNode root, int depth) {7 if(h < depth) {res=root.val; h=depth;}8 if(root.left != null) findBottomLeftValue(root.left, depth+1);9 if(root.right !=null) findBottomLeftValue(root.right, depth+1); 10 } leetcode513 FindBottomLeftTree...