java - zookeeper always disconnects and reconnects?

Deploying zookeeper on the spring boot project to register the service was normal at first. However, it will b...

From [Javadiscussion group] 2017-07-03 11:43:21 0  2  1240

java - 可以先跳过struts2、hibernate即ssh，直接学spring、spring-mvc、mybatis（ssm）吗

学完javaweb基础学习阶段（javase、servlet、jsp等等），现在学框架，可以先跳过struts2、hibernate即ssh，直接学spring、spring-mvc、mybatis（ssm）吗？？？

From [Javadiscussion group] 2017-04-18 10:46:17 0  6  1240

How to send json data to kafka using Java

I only see some news about Java producing STRING type on the Internet. According to Java's producer class, you...

From [Javadiscussion group] 2017-05-17 10:05:08 0  1  1239

java - How to solve the pressure on scheduled task polling database

There are many scheduled tasks, and they are distributed on different servers. To poll the database for data t...

From [Javadiscussion group] 2017-05-17 10:04:44 0  3  1239

java - idea debugmaven install 项目启动出现异常，求解决？

FATAL ERROR in native method: JDWP Can't allocate jvmti memory, jvmtiError=JVMTI_ERROR_INVALID_ENVIRONMENT(116...

From [Javadiscussion group] 2017-04-18 09:57:48 0  0  1239

java - A question in druid-spring-boot-starter

Paste the code first {code...} {code...} What I don’t understand is the maybeGetDriverClassName method of Drui...

From [Javadiscussion group] 2017-07-05 10:26:11 0  1  1238

java - How to decompress the data in some individual data blocks of a gzip file when streaming it?

Scenario description: {Code...} The problem now is that because what is received is not a complete compressed ...

From [Javadiscussion group] 2017-06-12 09:25:31 0  2  1238

mvc - java 包 dao 和 dao.impl 问题

我看 MVC 设计中 dao 层和 service 都说要加一个 dao.impl 而我在实际应用中感觉加一个 dao.impl 非常麻烦，比如我需要修改 dao.impl 还要修改 dao 这样不增加了负担吗？他的好处...

From [Javadiscussion group] 2017-04-17 13:01:02 0  11  1235

java - What is the best way to perform permission verification in a distributed system?

As the title states, in the project, there is a separate system as the permission system. The current approach...

From [Javadiscussion group] 2017-06-30 09:55:01 0  3  1234

java - 运行eclipse出现问题?

安装adk之后写的第一个java程序没有问题.但是下载eclipse之后运行eclipse之后就会报错,如下:JVM terminated. Exit code=1/usr/bin/java-Dosgi.required...

From [Javadiscussion group] 2017-04-18 10:20:46 0  2  1233

java - Spring Security开启Session并发控制后如何防止删除同用户名的remember-me固化信息？

spring-security.xml文件中，开启固化remember-me信息。 {代码...} 开启session并发控制 {代码...} 以同一用户名分先后在两个浏览器中登录。 {代码...} 第一个登录的sess...

From [Javadiscussion group] 2017-04-17 15:30:05 0  1  1233

java - How to stress test the CPU of http service (tomcat)

Premise: Hello everyone, I now need to stress test a tomcat server to find out where the bottleneck of the app...

From [Javadiscussion group] 2017-06-28 09:22:50 0  5  1231

How to get the user client mac address in java

How to get the user's client MAC address in java. I have tried many methods to get the server MAC address, and...

From [Javadiscussion group] 2017-05-27 17:41:02 0  3  1230

java - nginx+tomcat+双向SSL认证，jsp文件一直不能获取客户端证书信息

{代码...} 这段永远都是null不知道是哪里问题？nginx？还是tomcat？ 网上搜索了不少信息，但是都没有解决，有人直接用tomcat来当https服务器是可以解决，但是我真不想那么做 nginx用http和h...

From [Javadiscussion group] 2017-04-18 10:33:21 0  2  1228

java - lucene How to search for a keyword, and the keyword that is exactly the same as this one will be ranked first

For example, if you search for the keyword 'toluene', the ones with the title "toluene" will be rank...

From [Javadiscussion group] 2017-07-05 10:02:21 0  1  1227