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It 's written in front . This demo shows how to troubleshoot a @transactional-induced nullpointerexception. Https://github.com/hengyunabc/spring-boot-inside/tree/master/demo-Transactional-NullPointerException Positioning NullPointerException's Code

one. Eclipse MyBatis Generator Plug-in installationtwo. MyBatis Generator (Postgres)-– generates DTO, Dao, Mapping One. Eclipse MyBatis Generator Plug-in installation1. Self-motion installation--Open Eclipse, click Help>software Update--Select the

(1) The function of the Add Web Reference (Add Web Service Reference) provided in VS2005 is mainly to add Web services references.(2) VS2008 retains the Add Web Reference (Add Web Service Reference) also for version forward compatibility. Many

The following information occurs when the Ubuntu14.04 system in the virtual machine is installed to install VM Tools:Make sure you are logged on to the client operating system. Mount the CD drive boot terminal in the client, unzip the installer

This really is the network good many articles, I also many are everywhere reprint summary, then is oneself again to add and modified some. http://blog.csdn.net/myarrow/article/details/10105961, this is very detailed. KKGoogle has enabled SELinux by

Reprint please keep the original address http://blog.csdn.net/guodongxiaren/article/details/43876207 Overview Three IPC mechanisms (Message Queuing, semaphores, and shared memory) have been invented on System V ("system Five") systems, often

process switching based on kernel stack switching Difficulty coefficient: ★★★★☆ Experiment objective to deeply understand the concept of process and process switching, synthesize application process, CPU management, PCB, LDT, kernel stack, kernel

If an enterprise buys a batch of apps in the Apple Store, Apple gives a redeem code, and the Apple device user enters this code to download the app for free when they install the app in the App Store, but it's a hidden danger to the enterprise

The exception information that appears must explicitly describe intended ownership of an object array parameter is due to the use of the objective-c arc. The so-called arc, refers to the automatic reference count (Automatic Reference counting), the

Linux under websphere7.0, tuning after restarting WebSphere error: Admu0116i:tool information is being logged in file/opt/ibm/websphere/appserver/profiles/appsrv01/logs/server1/startserver.logAdmu0128i:starting tool with the APPSRV01

If Adobe Flash is not working correctly, or if you see the following error message, try the troubleshooting steps described later in this article. Adobe Flash version is too old to be blockedUnable to load pluginThis page has blocked the following

A single Elasticsearch cluster, if the following exception occurs: You need to change the Node.master:false configuration to node.master:true [2017-09-22 09:03:15,558] [DEBUG] [Action.admin.indices.create] [TSB] No known master node, scheduling a

SVN use tutorial Since 2011-7-10, SAE will fully support SVN code deployment, and users can deploy code not only from any SVN client, but also to the SVN repository of the application, even if they do not use SVN client deployment code, and the code

Fabric Source Parsing 12--peer MSP service MSP is the abbreviation for Membership service Provider , and the personal custom is a member relationship service provider . The role is similar to having a large number of participants in a running

1.LIBSVM and Liblinear differences, simple source analysis. http://blog.csdn.net/zhzhl202/article/details/7438160 http://blog.csdn.net/zhzhl202/article/details/7438313LIBSVM is a software that integrates support vector machines (c-svc, nu-svc),

Test instructions Given a string, 3 consecutive vowels or 5 consecutive consonants for bad, if it is not good, "?" can be any letter, if it is possible that the mixed given a string, 3 consecutive vowels or 5 consecutive consonants for bad, if the

  The delay program is widely used in SCM programming, but some readers do not know how to program the time delay programs in the study, and do not know the machine The difference between the period and the instruction period, do not know the

Original link: https://piotrminkowski.wordpress.com/2018/06/15/ BUILDING-AND-TESTING-MESSAGE-DRIVEN-MICROSERVICES-USING-SPRING-CLOUD-STREAM/PIOTR Mińkowski Translator: helloworldtangimgspring Boot and Spring cloud provide you with a solution to

This essay goes on to learn a more important Component API Gateway service in MicroServices. When we finally have to provide external access to the micro-service architecture, we need a unified access portal, to hide our internal service URL details,

Before we learned Laravel Dingo/api to create a simple API so that the API is open to everyone, how to view and limit the invocation of the API? can be verified with Jwt-auth, JSON Web Token authentication1, first install the Jwt-auth plug-in, the