Introduction to Transactions
In general, the Java EE Application Server supports JDBC transactions, JTA (Transaction API) transactions (typically managed by a container). In general, it is best not to use the above three transaction types in your program, such as nested JDBC transactions in JTA transactions. Second, the transaction should be completed in as short a time as possible without the use of the
Implementation of JTA transactions with Tyrex integrated hibernate and JDBC in unmanaged environmentsThe recent integration of hibernate into the company's products, the company's products using Tyrex to provide JTA transaction support, its own based on JDBC implementation of a set of O/R Mapping, and embedded tomcat, so the transaction part of its own implementation, and Tomcat's environment, independent o
Recently implemented a background management project, involving multiple database synchronization, there has been a transaction problem, the original design springmvc+mybaties+druid data source is not available, the original JDBC changed to JTA. The design becomes: Springmvc+mybateis+atomikos.maven dependent:
com.atomikos
atomikos-util
${atomikos.version}
com.atomikos
transactions-
Version: hibernate_core 3.3.2Use SF. opensession ();But now getcurrentsession () is popular. The reason is very simple. opensession () re-starts a session regardless of the situation, while getcurrentsession () adds a judgment, when there is a session, it will be called directly. If there is no session, it will be created. The benefits are obvious!Error message I met
Java code :{
DP. Sh. toolbar. copytoclipboard (this); Return false;
} "Href =" # ">
Org
"class= "Product. Inventorydaoimpl "> - Propertyname= "Sessionfactory"ref= "MySessionFactory2"/> - Bean> the - This shows the Spring 1.x style of declarative transaction configuration -Wuyi It is totally supported, 100% legal in Spring 2.x, but see also above for the sleeker, Spring 2.0 style - the BeanID= "Myproductservice" - class= "Org.springframework.transaction.interceptor.TransactionProxyFactoryBean"> Wu Propertyname= "TransactionManager"ref= "Mytxmanager"/> - Prope
First you need to [install components that can use JTA, and the components you can use include Atomikos, jbossts, OPENEJB
In Atomikos, the Sybase database is used to illustrate:
(1). Atomikos Configuration
Jta.properties, please refer to Atomikos's documentation for configuration
(2). Spring Configuration
(3). Tomcat Configuration
Contex.xml Configuration
factory= "Com.atomikos.tomcat.BeanFactory" uniqueresourcename= "Jdbc/atii"
Xada
The Org-mode mode of using Emacs skillfully
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Updated: 2013-07-25 23:45
One-Touch masterBaidu Master, a variety of mobile phones, computer problems
IntroducedGo to official documentsORG is a mode for keeping notes, maintaining TODO lists, and doingProject planning with a fast and effective plain-text system.ORG develops organizational tasks around NOTES files that containLists or information about projects as plai
Emacs org-mode Chinese and English font settings table of Contents
1. Problems with default fonts
2. Workaround
2.1. Environmental statement
2.2. Ideas and methods
2.3. Emacs Setup Code
2.4. Display effect
1Problems with default fontshas been looking for a way to take note of the software, recently found Org-mode, after the trial feel really very useful.H
why org 07c00h?
A lot of people are asking questions about this line after they read the book, "write their own operating system" or their second edition.
This question is explained in the book by the author:
Tell the compiler that in the future our program will be loaded into the 07c00 for execution.
To tell the truth, "write your own operating system" this book is really good, I do not admire the author's level, but the author's perseverance, can p
You can write a document in Org and then use a script to convert it to a freemap file.The script file can be downloaded here:Copy it to ~/.emacs.d/freemind.elAdd a line in Init.el:;; Freemind Export (Load "~/.emacs.d/freemind.el")Now edit a user and content. org file:* User Data * * User base data * * Consumer behavior Data * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *To ru
I met Org/objectweb/asm/type when I was consolidating ssh.Workaround 1: The reason is that cglib-nodep-2.x.x.jar in spring conflicts with Cglib-2.2.jar in Hibernate! The Cglib-nodep-2.x.x.jar in spring is necessary when both frameworks are integrated Cancel the Cglib-2.2.jar in HibernateWorkaround 2: The cglib in Hibernate 3.2.6 is Cglib-2.1.3.,jar use Cglib-2.2.jar and the above problems occur. Replace the Cglib-2.2.jar with Cglib-2.1.3.jarWorka
Original: http://blog.csdn.net/ooppookid/article/details/51704792java, javax, org, and Com.sun packages are all class packs provided by JDK and are all in Rt.jar. Rt.jar is the Java base Class library (a very important package in the Java Core framework),Most of the features include Lang, and Rt.jar default is in the root ClassLoader loading path,So it is superfluous to put it in classpath. The difference between them is as follows: 1. java.*
Java SE
After the computer restarts do not know why the eclipse in the MAVEN can not be used, the Pom file has been marked red, reported the following error:
Execution default-cli of goal org.apache.maven.plugins:maven-resources-plugin:2.5:copy-resources Failed:a required Class was missing while executing org.apache.maven.plugins:maven-resources-plugin:2.5:copy-resources:org/apache/ Maven/shared/filtering/mavenfilteringexception-----------------------------------------------------Realm = plugin>org.apac
, each time a value is modified, the table can be recalculated directly. This is a better way.The above formula can also be optimized to use relative positions to specify the last line:#+caption:dau Statistics | Date | New | daily Live | VV | conversion rate | | --------+-------+-------+-------+--------|| 1 represents the previous line in the @7, so you can insert any number of lines in the middle, the formula only needs to modify the @7 to the correct number of rows, it can be calcula
.dispatcher.Dispatcher.getContainer (dispatcher.java:967) at Org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration (dispatcher.java:435) at Org.apache.struts2.dispatcher.Dispatcher.init (dispatcher.java:479) at Org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher (initoperations.java:74) at Org.apache.struts2.dispatcher.ng.filter.StrutsPrepareFilter.init (strutspreparefilter.java:56) at Org.apache.catalina.core.ApplicationFilterConfig.getFilter (applicationfilterconfig.jav
The following error occurs when I connect to MySQL through spring today:
09:35:42, 966 [qtp1599775880-15] warn [COM. XXX. muce. webapp. Controller. queryjobcontroller]-exception:
Org. springframework. dao. recoverabledataaccessexception: preparedstatementcallback; SQL [select ID, user, hql, output, priority, status, s_time, r_time, c_time, progress, reason from queryjob where (status =? And user =? )]; The last packet successfully receivedFrom the ser
1. Cannot find class [org. Apache. commons. DBCP. basicdatasource]
Class = "org. Apache. commons. DBCP. basicdatasource"Destroy-method = "close">Value = "com. Microsoft. JDBC. sqlserver. sqlserverdriver"/>Value = "JDBC: Microsoft: sqlserver: // localhost: 1433; databasename = itsm_jbpm; selectmethod = cursor;"/>
The main reason is that there are jar packages of earlier Spring versions in classpath. The new
During plug-in development, Extentions: Org. eclipse. UI. views, added several views at the same time, and then right-click the project run --> JAVA application. The following error report is displayed when the added view is opened in the running project:
Org. Eclipse. Core. runtime. Internal. adaptor. selazystarter $ terminatingclassnotfoundexception: An error occurred while automatically activating bundle
Question: The cause and solution for the exception of org. springframework. Beans. Factory. beancreationexception.
Org. springframework. Beans. Factory. beancreationexception: Error creating bean with name 'datasource 'defined in servletcontext
Resource [/WEB-INF/applicationcontext. xml]: instantiation of bean failed; Nested exception is Java. Lang. noclassdeffounderror:
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