The role of some jars

By chance, make a record

The process of sending a project, often need to use a write jar package, now on one of the role of the jar, do a summary, but also to avoid less lead or more than a jar package, welcome to Add. Thank you.

1.apache of a write jar

Commons-collections.jar:
One of the Apache Commons packages contains some collection classes developed by Apache that are more powerful than java.util.*.

Commons-beanutils.jar:
One of the Apache Commons packages that contains some Bean tool class classes.

Commons-lang.jar:
One of the Apache Commons packages, which contains some data type tool classes, is an extension of the java.lang.*.

Log4j-1.2.15.jar

Currently the most widely used log controls can be configured with file Log4j.properties to use together, through configuration file configuration log output, output style and so on.

Commons-logging.jar:
A member of the Apache Commons package, the Apache Commons Class library is a general-purpose class library that provides basic functionality such as Commons-fileupload, Commons-id, Commons-codec, and so on.

Commons-logging is able to choose whether to use log4j or JDK Logging, but does not rely on the log4j, JDK Logging APIs. If the project's classpath contains a log4j class library, use log4j, or use JDK Logging. With commons-logging, you have the flexibility to choose which logs to use without having to modify the source code.

The use of commons-logging is similar to that of Log4j, whose level and use rules are exactly the same.

If there is a log4j,commons-logging will give the output intact to log4j, if not the corresponding output into the JDK logging output. By default, Commons-logging automatically checks to see if log4j is being used. You can also use a configuration file to explicitly enable log4j. Configure the price for commons-logging.properties, put it under classpath.

Commons-dbcp.jar:
DBCP database Connection pool, Apache Jakarta organization developed, TOMCAT4 connection pool is also dbcp.

Commons-fileupload.jar

File Upload function.

Commons-httpclient-3.1.jar

Gets the functionality of the HTTP request parameter.

Commons-io-1.3.2.jar

IO data stream read/write function.

Velocity-1.5.jar

The jar required to use the velocity template.

Ant.jar

The project hand packs the jar required for the release.

A write jar associated with spring

Spring.jar

Core, necessary.

Spring-webmvc.jar

The jar that is necessary to use Spring web MVC

Struts2-spring-plugin-2.1.6.jar

Strtus2 the jars needed to integrate with spring

Struts2 associated with a write jar

Struts2-core-2.1.6.jar

Core, necessary.

The jar associated with the hibernate

Hibernate3.jar core jar, required.

Freemarker-2.3.13.jar

Looks like it's what hibernate needs.

Cglib.jar:
Cglib Library, Hibernate uses it to realize the dynamic generation of PO byte code, very core library, must use JAR package

Other one write jar

Dom4j-1.6.1.jar

Java parses an XML file.

Jta.jar

Java JTA Specification

Antlr.jar

A tool for ANTLR language recognition (ANother Tool for Language recognition) is a language tool that provides a framework for constructing language recognizers through syntax descriptions that contain Java, C + +, or C # actions (action), The translator and interpreter.

See: http://www.ibm.com/developerworks/cn/java/j-lo-antlr/index.html?ca=drs-

Json-lib-2.2.3-jdk15.jar

Java parses the jar required by JSON.

Mysql.jar

Needless to say, MySQL database is required.

Ojdbc14_g.jar

Oracal required for the database.

Pushlet.jar

Service backstage push so must the jar.

Poi-3.6-20091214.jar

Poi-contrib-3.6-20091214.jar

Poi-ooxml-3.6-20091214.jar

Poi-ooxml-schemas-3.6-20091214.jar

Poi-scratchpad-3.6-20091214.jar

Use POI to resolve the necessary jars for generating Excel files, and so on.

Registry.jar

The jar required by the Java Operations Registry

Sitemesh-3.0-alpha-1.jar

Foreground code utilizes the jar required by the adorner

The function of which said very fanfan, but also more one-sided, welcome everyone to add, sometimes think, if the source of these jar bag research through, seemingly also very n, but just think about it, look at the Ching.