apache commons tutorial

Apache in Commonscompress provides a well-known tar, cpio, zip and other compression algorithm implementation, the most abundant is the ZIP implementation!Commons Compress has built a compression algorithm factory class Compressorstreamfactory for compression (gzip and BZIP2). This class makes it easy to build the input and output streams for gzip and BZIP2, with the keywords "gz" and "bzip2", respectively.

First, post an overview of Apache Commons IO official websiteCommons IO 2.4 API Packages Org.apache.commons.io This package defines utility classes for working with streams, readers, writers and files. Org.apache.commons.io.comparator This is provides various Comparator implementations for File S. Org.apache.commons.io.filefilter This pa

Del format is similar to CSV, my test file here Test.del is a set of data from the DB2 database.The MAVEN coordinates of the Apache Commons CSV are: org.apache.commons commons-csv 1.5Test procedure:Package test;import Java.io.File;import Java.io.FileInputStream;import java.io.IOException;import Java.io.InputStream;import Java.io.InputStreamReader;import

Apache The Apache Commons is a very useful toolkit for solving a variety of practical common problems, and here is a summary table with details to visit http://jakarta.apache.org/commons/index.html Beanutilscommons-beanutils provides packaging for Java reflection and introspection APIs BETWIXTBETWIXT provides service

Apache Commons is an Apache project that focuses on reusable Java components. Apache Commons consists of three components:Commons Proper-A reusable Java component library.Commons a workspace developed by the Sandbox-java component.Commons dormant-the component library of the

The tool class altogether 6: Org.apache.commons.io.filefilter. filefilterutils Org.apache.commons.io. endianutils filenameutils filesystemutils FileUtils ioutils The code that normally reads a Web page's source may be as follows InputStream in = new URL ("Http://laoyu.info"). OpenStream (); try { InputStreamReader InR = new InputStreamReader (in); BufferedReader buf = new BufferedReader (InR); String Line; while (line = Buf.readline ())! = null) { S

Release date:Updated on: Affected Systems:Apache Group Tomcat 7.xApache Group Tomcat 6.xApache Group Tomcat 5.xUnaffected system:Apache Group Tomcat 7.0.20Apache Group Tomcat 6.0.33Apache Group Tomcat 5.5.34Description:--------------------------------------------------------------------------------Bugtraq id: 49143CVE (CAN) ID: CVE-2011-2729 Apache Commons Daemon can be used to implement background services

specified property from the configuration. SetProperty ()overrides the value of the specified property. This is the same as deleting the property and then calling AddProperty () with the new property value . Clear ()clears the configuration. 2.4 Immutable ConfigurationThe Commons Configuration class Library provides most of the classes that implement the configuration interface, for example, they allow client code to change their internal state. For

The Apache Commons-fileupload.jar is placed under the web-inf\lib of the application and can be used. The following example describes how to use its file upload feature. The FileUpload version used is 1.2 and the environment is eclipse3.3+myeclipse6.0. FileUpload is based on Commons io, so make sure that the Commons I

(Archivestreamfactory.tar, FOS); //Copy the existing entriesArchiveentry NextEntry; while((NextEntry = Ais.getnextentry ())! =NULL) {aos.putarchiveentry (nextentry); Ioutils.copy (AIS, AOS); Aos.closearchiveentry (); } //Create the new entryTararchiveentry entry =Newtararchiveentry (file2writename); Entry.setsize (Filetoadd.length ()); Aos.putarchiveentry (entry); Ioutils.copy (NewFileInputStream (Filetoadd), AOS); Aos.closearchiveentry ();

Stopwath is a task execution time monitor under the Apache Commons lang packageMain methods:Start (); Start timingSplit (); Set Split pointGetsplittime (); Gets the time from start to the last splitReset (); Reset TimingsSuspend (); Pause the timer until resume () is calledResume (); Recovery TimingsStop (); Stop timingGetTime (); Counting the timings from start to presentCode:Import Org.apache.commons.lang

Apache Commons Codec's language is a powerful package, mainly used in the processing of various languages, of course, this package of Chinese characters support is very bad. This piece of content, on the Internet very little, can only write some very superficial code, if there is a chance to contact, and then perfect.Let's start by learning the code examples. Examples of Soundex Coding

The exception information is as follows: Exception in thread "Main" Java. Lang. noclassdeffounderror: ORG/Apache/WS/commons/Schema/utils/namespaceprefixlistAt org. Apache. cxf. jaxws. jaxwsclientfactorybean. At org. Apache. cxf. jaxws. jaxwsproxyfactorybean. At CN. navidog. Common. webwervice. Client. rankclient. At CN

In the general writing of the bean component, must write the setter and getter method, of course, if we already know the bean's related properties and methods, write beans is relatively simple, but too many components, repetitive writing is often boring boring. But when I need to invoke the properties of a dynamic object at some point, how do we set and get the properties of the object? Beanutils can help us to simplify the solution to this problem.The latest version is now 1.9.In the daily deve

Environment JBoss 6.0 + myeclipse 8.6 + MySQL 5.1 + Struts 2.3 + EJB 3.0 Problem When JBoss is started, "Java. Lang. noclassdeffounderror ORG/Apache/commons/lang3/stringutils jar" exception occurs. Solution The commons-lang3-3.1.jar is missing, add this jar to the build path of the project or under webroot/WEB-INF/lib. References Http://snowfigure.diandian.com/p

Apache commons-io provides many classes. Here we only introduce the fileutils class. The fileutils class provides some practical methods to operate on file objects, including File Reading, writing, copying, and comparison. For example, you can use the following method to read and write a file one by one: File file = new File（"E:/data/a.csv"）;List lines = FileUtils.readLines(file,"UTF-8");FileUtils.writeL

)) {Tararchiveentry entry; while((Entry = Tais.getnexttarentry ())! =NULL) { if(Entry.isdirectory ()) {Logger.warn ("Dir:{}", Entry.getname ()); } Else { intSize = (int) entry.getsize (); byte[] content =New byte[size]; intReadcount = tais.read (content, 0, size); Logger.info ("Filename:{}", Entry.getname ()); Bytearrayinputstream Bytearrayinputstream=NewBytearrayinputstream (content, 0, Readcount); Lineiterator iterator= Ioutils.lineiterator (Bytear

Today, after installing Tomcat7.0.21, it is OK to start the Web service separately with D:\apache-tomcat-7.0.21\bin\startup.bat. However, after you have integrated configuration Tomcat7 in MyEclipse8.5, the following error message appears when you start the Tomcat service in MyEclipse:Exception in thread "main" java.lang.noclassdeffounderror:org/apache/juli/logging/logfactoryAt Org.apache.catalina.startup.B

packagetest;importorg.apache.commons.pool.poolableobjectfactory;import org.apache.commons.pool.impl.genericobjectpool;importorg.apache.log4j.logger;import com.gargoylesoftware.htmlunit.browserversion;import com.gargoylesoftware.htmlunit.nicelyresynchronizingajaxcontroller;import Com.gargoylesoftware.htmlunit.webclient;//http://blog.csdn.net/m13321169565/article/details/8081410public classpooledclientfactory{privatestaticloggerlog= logger.getlogger (Pooledclientfactory.class);privatefinalstatic P

ArticleDirectory Environment Problem Solution References Data download Environment JBoss 6.0 + myeclipse 8.6 + MySQL 5.1 + Struts 2.3 + EJB 3.0 Problem StartJBoss"Java. Lang. noclassdeffounderror: ORG/Apache/commons/lang/stringutils"Exception Solution MissingCommons-lang-2.5.jar, Set thisJarAdded to the ProjectBuild pathOrWebroot/WEB-INF/lib. References Http://bbs.csdn.n