read xls file in java

Private String fileseparator = File.separator; Distinguish between different window platform directory separatorsPrivate String FilePath = "E:" +fileseparator+ "Code" +fileseparator+ "pdm-server-parent" +fileseparator+ "Pdm-server" + fileseparator+ "Logs";Private final int buffer_size = 0x300000;//buffer size is 3M Public string getlogallcontent (string filename) throws IOException { String flagstring = ""; /*filereader reader = new FileReader (filepath+fileseparator+filename); BufferedReader

("Process wget timeout 30s, destroyed!"); Ps.destroy (); Break; } Try{res=Ps.exitvalue (); Finished=true; } Catch(illegalthreadstateexception e) {Try{TimeUnit.SECONDS.sleep (1); } Catch(Interruptedexception E1) {}}} returnRes; }}Importorg.apache.commons.io.Charsets;ImportJava.io.BufferedReader;Importjava.io.IOException;ImportJava.io.InputStream;ImportJava.io.InputStreamReader;Importjava.util.List; Public classThreadutilImplementsRunnable {//set the character encoding

key) {returnSingleTon.pro.getProperty (key); } Public Static void Main(string[] args)throwsConfigurationException {System.out.println ("--------------------"); String val = imagepropconfigutil.getval ("File.filetype"); System.out.println ("-------file type: \ t"+ val); }}2. Using the jar package: Apache-commons-configuration-1.5.jarPropertiesConfiguration prop = new PropertiesConfiguration("config/file.properties");prop.setDelimiterParsingDisabled(tr

*SYSTEM.OUT.PRINTLN ("Data connection Failed"); $ e.printstacktrace ();Panax Notoginseng } - } the + Private Static voidinitconfig () { AInputStream inf = jdbcutils.class. getClassLoader (). getResourceAsStream ("Database.propertties"); theProperties Properties =NewProperties (); + Try { - Properties.load (INF); $Classforname = Properties.getproperty ("Driverclass"); $Sqlurl = properties.getproperty ("url"); -SqlUser = Properties.getproperty ("username

) {attr.getname (); Attr.getvalue (); } Iterator ITT=Book.elementiterator (); while(Itt.hasnext ()) {Element Bookchild=(Element) itt.next (); Bookchild.getname (); Bookchild.getstringvalue (); } } } Catch(documentexception e) {e.printstacktrace (); } }}Analysis of four analytic methods:Dom:。 Platform-independent official parsing method* Required memory performance is a bit higherSax:。 An event-driven parsing approach provided

/*A class containing methods useful for manipulatingText Files1. readfilebyline:Reads the contents of a text file line by lineAnd returns a string array representation, whereEach line is stored in an element of the array.2. readfileRead the contents of a text file into a string*/ Import java. Io .*;Import java. util .*

Read in Java read. Properties config file null pointer exceptionException in thread "main" java.lang.NullPointerExceptionAt Java.util.properties$linereader.readline (Unknown Source)At java.util.Properties.load0 (Unknown Source)At Java.util.Properties.load (Unknown Source)At Com.bubianchenmo.ch02.TestProperties.main (te

With @propertysource, you can specify the read configuration file and get the value by @value annotations, using: PackageCN.QLQ;ImportOrg.springframework.context.annotation.Bean;ImportOrg.springframework.context.annotation.ComponentScan;Importorg.springframework.context.annotation.Configuration;ImportOrg.springframework.context.annotation.PropertySource; @Configuration//This annotation indicates that the cl

private void FileReader () throws ioexception{BufferedReader bf= New BufferedReader (New InputStreamReader (New FileInputStream ("d:\\comparedll.py"), "UTF-8");String str= "";while ((Str=bf.readline ())!=null) {System.out.println (str);}Bf.close ();}If you do not specify the encoding, the system default encoding is used when reading the file, typically GBKI/O class handling for JavaThe reader class is the parent of the

in the real work, we often need to save some system configuration information, we generally will choose to complete the configuration file, this article according to the author's work to read the configuration file of a small sum, the main description is spring read the configuration

references here is clear.Method 2public void doget (HttpServletRequest request, httpservletresponse response) throws Servletexception, IOException { String path = This.getservletcontext (). Getrealpath ("/web-inf/classes/data.properties"); FileInputStream in = new FileInputStream (path); Properties Pros = new properties ();p ros.load (in); String username = pros.getproperty ("username"); String Password = pros.getproperty ("password"); System.out.println ("username =" + username); SYSTEM.OUT.PR

Tool class Workbookfactory/** * Creates the appropriate hssfworkbook/xssfworkbook from * The given inputstream. * Your input stream must either support mark/reset, or ' be wrapped as a {@link pushbackinputstream}! * /public static Workbook Create (InputStream inp) throws IOException, invalidformatexception { //If clearly does N ' t do mark/reset, wrap up if (! inp.marksupported ()) { INP = new Pushbackinputstream (INP, 8); } if (Poifsfilesystem.has

Today's Csdn FAQ explains how to read the contents of an XML file in Java. Directly on the code, the note is very clear! Copy Code code as follows: Import java.io.*; Import Javax.xml.parsers.DocumentBuilder; Import Javax.xml.parsers.DocumentBuilderFactory; Import org.w3c.dom.Document; Import org.w3c.dom.Element; Import Org.w3c.dom.Node; Import

Java does not understand compression directly read the. zip compressed File This example, the following demo of the project source generation download address is as follows: Source code Download address Package com.sd.test.readzip; Import Java.io.BufferedInputStream; Import Java.io.BufferedReader; Import Java.io.FileInputStream; Import java.io.IOException; Imp

Java read-write configuration file prop.properties@Testpublic void Fun () throws ioexception{Properties Prop=new properties ();String Path2=this.getclass (). GetResource ("/test/conf/file.properties"). GetPath ();System.out.println (path2);InputStream in=new Bufferedinputstream (New FileInputStream (path2));Prop.load (in);Integer Count=integer.parseint (Prop.getp

Content transferred from: 539006361 New Properties (); 2 InputStream is = dbutils. class. getResourceAsStream ("jdbc.properties");Find files from the class root directory as follows1 New Properties (); 2 inputstream instream= dbutil. class. getClassLoader (). getResourceAsStream ("configjdbc.properties"); 3 properties.load (instream);Here's how to find files from the package under the current class1 New Properties (); 2 inputstream instream= dbutil. class. getResourceAsStream ("configjdbc.proper

1. Configuration of perm.properties filesIapp.perm.camera= cameraiapp.perm.sms= SMS2. Read the contents of the Properties configuration file ( implemented by the getResourceAsStream (String name) method of the Java.lang.Class class )public class Test {public static void Main (string[] args) {Properties Properties = new properties ();InputStream in = Test.class.getClassLoader (). getResourceAsStream ("/perm.

Label: Spring uses a configuration file to read Jdbc.properties Add two required beans to the Beans.xml [HTML]class= "Org.springframework.beans.factory.config.PropertyPlaceholderConfigurer" >destroy-method= "Close" > The jdbc.properties under the Web-inf [HTML]Jdbc.driverclassname=com.mysql.jdbc.driverJdbc.url=jdbc:mysql://210.30.12.3:3306/springJdbc.us

Properties class inherits from HashtableIt provides several main methods:1. GetProperty (String key) that searches for properties in this property list with the specified key. That is, by the parameter key, the value corresponding to the key is obtained.2. Load (InputStream instream) to read the list of attributes (key and element pairs) from the input stream. Gets all the key-value pairs in the file by loa

Original: Java vs. io and NiO file read/write performance testSource code: Http://www.zuidaima.com/share/1550463508466688.htm1. NIO uses a way closer to the operating system to execute IO: Channels and buffers, as the name implies, data source data is transmitted by the buffer through the channel. 2. After JDK5, the raw IO system was optimized for NIO at the bott