JSP - Standard Tag Library (JSTL) Tutorial. The JavaServer Pages Standard Tag Library (JSTL) is a collection of useful JSP tags which encapsulates core functionality common to many JSP applications. JSTL has support for common, structural tasks such as iteration and conditionals, tags for manipulating XML documents, internationalization tags, and SQL tags. It also provides a framework for integrating existing custom tags with JSTL tags. The JSTL tags can be classified, according to their functions, into following JSTL tag library groups that can be used when creating a JSP page: Core Tags Formatting tags SQL tags XML tags JSTL Functions Install JSTL Library: If you are using Apache Tomcat container then follow the following two simple steps: Download the binary distribution from Apache Standard Taglib and unpack the compressed file.To use the Standard Taglib from its Jakarta Taglibs distribution, simply copy the JAR files in the distribution's 'lib' directory to your application's webapps\ROOT\WEB-INF\lib directory.
Core Tags: Define el diseño de tus APIs con Blueprint, RAML o Swagger. Muchas veces desbordados por las necesidades (urgentes) exponemos componentes internos de nuestras aplicaciones en servicios REST públicos. La inercia nos ha llevado a ir creando este tipo de APIs sin un diseño previo. Lo que conlleva problemas por la falta de planificación, lo que se traduce en la inconsistencia entre los objetos y métodos, sin hablar de agujeros de seguridad. Afortunadamente, la tendencia está cambiando. Cada vez toma más importancia el diseño previo de APIs utilizando herramientas que tengan en cuenta la usabilidad, la necesidades de los consumidores/aplicaciones que vayan utilizar los servicios, permitan realizar mocks testeables, posibilitar el versionado y, por supuesto, crear de forma conjunta al desarrollo de la documentación. API Blueprint, RAML y Swagger representan tres excelentes herramientas para diseñar APIs. API Blueprint Con API Blueprint tenemos un amplio ecosistema entorno al desarrollo de APIs.
Swagger Conclusión. ZK - Small Talks/2012/March/Securing ZK Applications With Apache Shiro - Documentation. From Documentation In this smalltalk I will introduce how you can secure your ZK applications using Apache Shiro, a Java security framework. Apache shiro is an easy-to-use Java security framework that provides security features such as authentication, authorization, cryptography, session management and so on.
It is a comprehensive application security framework and especially useful for securing your web applications based on simple URL pattern matching and filter chain definitions. You can add Apache Shiro framework support to your ZK applications by either downloading the binary files from Shiro project download section and placing the jar files in your WEB-INF/lib folder, or, if you are using Maven, just add dependencies to your project pom.xml file as shown below; You also need to enable Shiro security filter in web.xml for it to auto register security filter configurations. Make sure you have the filter mapping configured to filter all URL patterns.
INI configuration Access denied page. SHA512 Hash in Java | Devesh Sharma. For one of my projects recently, I got a chance to look into SHA512 Hashing in Java. The purpose of Hashing is to take any arbitrary input and produce a fix length output string. The Hashing is mainly done to ensure that the data has not been tampered with during its transmission. Also, Hash is one way function, that is, it is not possible to go from the output to the input.
Hashing in Java I recommend using Apache Commons Codec library for Hashing in Java. Here is the step by step process for generating SHA512 Hash in Java: 1. 2. Like this: Like Loading... Struts 2 download file example. A Struts 2 example to show the use of custom result type to allow user to download file. 1. Action In Action class, declared an InputStream data type and its getter method. DownloadAction.java 2. A normal page, with a download link to download a file. downloadPage.jsp <%@ taglib prefix="s" uri="/struts-tags" %><html><body><h1>Struts 2 download file example</h1><s:url id="fileDownload" namespace="/" action="download" ></s:url><h4>Download file - <s:a href="%{fileDownload}">fileABC.txt</s:a></h4></body></html> 3. struts.xml Define the download file detail, self-explanatory.
Struts.xml <? 4. Reference. JSP - Exception Handling. When you are writing JSP code, a programmer may leave a coding errors which can occur at any part of the code. You can have following type of errors in your JSP code: Checked exceptions: Achecked exception is an exception that is typically a user error or a problem that cannot be foreseen by the programmer. For example, if a file is to be opened, but the file cannot be found, an exception occurs.
These exceptions cannot simply be ignored at the time of compilation.Runtime exceptions: A runtime exception is an exception that occurs that probably could have been avoided by the programmer. This tutorial will give you few simple and elegant ways to handle run time exception/error occuring in your JSP code. Using Exception Object: The exception object is an instance of a subclass of Throwable (e.g., java.lang. JSP gives you an option to specify Error Page for each JSP. Following is an example to specifiy an error page for a main.jsp. Java.lang.RuntimeException: Error condition!!!...... The Most Common Java Keytool Keystore Commands. Java Keytool is a key and certificate management utility. It allows users to manage their own public/private key pairs and certificates. It also allows users to cache certificates. Java Keytool stores the keys and certificates in what is called a keystore.
By default the Java keystore is implemented as a file. It protects private keys with a password. A Keytool keystore contains the private key and any certificates necessary to complete a chain of trust and establish the trustworthiness of the primary certificate. Each certificate in a Java keystore is associated with a unique alias. Note: For easier management of your Java Keystores (using a GUI) check out Portecle. Compare SSL Certificates Below, we have listed the most common Java Keytool keystore commands and their usage: Java Keytool Commands for Creating and Importing These commands allow you to generate a new Java Keytool keystore file, create a CSR, and import certificates. Java Keytool Commands for Checking Digg del.icio.us Reddit. How to put a List from Java to a Report. Posted on July 22, 2010 at 6:02am Hi, I have a probelm with my report. I do no use any Database. I come from Java Bans. JRDataSource jrDataSource = convertReportData(masterList); JasperReport report = (JasperReport) JRLoader.loadObject(new File("Main.jasper")); JasperPrint jrPrint = JasperFillManager.fillReport(report, null, jrDataSource); ....
My JRXML looks like this: ... My question is: How do set up the jrxml-File that i can see all parameters form the list file in the detail section? Thanks Post Edited by nmau at 07/22/2010 13:03 Post Edited by nmau at 07/22/2010 13:04 Post Edited by nmau at 07/22/2010 13:06 Post Edited by nmau at 07/22/2010 13:12 Post Edited by nmau at 07/22/2010 13:14 Post Edited by nmau at 07/22/2010 13:28 Joined: Jun 8 2010 - 2:19am Last seen: 2 weeks 5 days ago Posted on July 23, 2010 at 4:39pm i don't have sure if i understand what you need. But... if it was what i am thinking, you need to pass your own values to jasperreports instead of taking them from a database? Enviar lista a Jasper Report desde Java | Useful code.
En esta prueba se han usado las librerías itext-1.3.1.jar y jasperreports-3.5.2.jar En java, en nuestro Action, creamos el mapa de parámetros para enviar al informe. Para crear el jasper report vamos a usar iReport 3.7.0. Este programa nos permite trabajar en entorno diseñador, en el que podremos crear y colocar a nuestro antojo los elementos de los que disponemos en jasper report, desde etiquetas fijas a parámetros variables. Lo primero que debemos hacer es organizar nuestro informe. Para ello tenemos que tener claro que elementos van en la cabecera, cuerpo y pie. Una vez lo tengamos claro creamos nuestro nuevo fichero Report en blanco que aparece dividido en franjas o Bandas (bands). Después creamos nuestra cabecera. <pageHeader><band height="35" splitType="Stretch"><staticText><reportElement x="43" y="9" width="59" height="20"/><textElement verticalAlignment="Middle"><font size="12" isBold="true" pdfFontName="Helvetica-Bold"/></textElement><text><!
Ahora comenzamos con el cuerpo. Installing Apache Hadoop - Hadoop: The Definitive Guide. By Tom White At the time of this writing, Git is (seemingly) not installed by default on any GNU/Linux distribution or any other operating system. So, before you can use Git, you must install it. The steps to install Git depend greatly on the vendor and version of your operating system. This chapter describes how to install Git on Linux and Microsoft Windows and within Cygwin.
It’s easy to install Hadoop on a single machine to try it out. (For installation on a cluster, please refer to Chapter 9, Setting Up a Hadoop Cluster.) The quickest way is to download and run a binary release from an Apache Software Foundation Mirror. In this appendix, we cover how to install Hadoop Core, HDFS, and MapReduce. Hadoop is written in Java, so you will need to have Java installed on your machine, version 6 or later. Hadoop runs on Unix and on Windows. Start by deciding which user you’d like to run Hadoop as. . % tar xzf hadoop-x.y.z.tar.gz to point to version 1.6.0 of Java. Check that Hadoop runs by typing: StrutsFileDownload - Struts Wiki. A new DownloadAction was added in Struts 1.2.6 (see the JavaDoc). This page is to show how to use it and has the following structure: FrankZ: Here is the sample webapp... downloadapp.zip Please note that this is my first ever attempt at editing a Wiki entry, so if I screwed anything up, I apologize in advance!
Lastly, I skimmed through the content of this entry and didn't see anything blatantly wrong. I will try and proof it more thoroughly as time allows, but for now, in addition to the sample app, it should get anyone going in the right direction. niallp: Since I haven't actually used this class myself, I'm hoping that Martin, Frank or anyone else involved in the discussion/creation of this would take a look here to see if its OK. Details from this thread: Mail Archive - Note that the link to the sample app at omnytex.com referenced in this thread is no longer valid. Implementing a DownloadAction Implement the getStreamInfo() Method Implement the getBufferSize() Method Examples. StrutsFileDownload - Struts Wiki. Java Experts Blog | Java Examples | API | Errors | Exceptions: Java / JSP : Simple image cropping example. In this article we will see how to crop an image in Java.
You are in this page then u might surely know what exactly the Image cropping is, it is nothing but removal of the outer parts of an image to improve framing, to change aspect ratio etc. Image cropping can be implemented easily using Java. First lets see the basic example of image cropping. In the below code we have used getSubimage() function of BufferedImage to achive image cropping feature. No need to add any Jar file directly you can run below code and see the output. Please see the self explanatory java code below. ImageCropper.java Output : Original Image Dimension: 500x370 Cropped Image Dimension: 200x200 Image cropped successfully: C:\Test\croppedImage.jpg Original image : Cropped image : In the above example you have seen how image cropping can be done using Java however the above example have two limitations. 1. Image.jsp cropper.jsp Output : Jquery - Croping image using jcrop and java.
5 steps to speed up your eclipse as a super fast IDE | David Euler on coding and design. Follow these steps to speed up your eclipse as a super fast IDE , it works for 32 & 64 bit version eclipse/jdk on my windows 7 x64. 1.Disable antivirus software, or add your jdk & eclipse & workspace & other related folder to white list in your antivirus software. 2.Disable unecessary validations and startup action in eclipse reference.
For validations: on eclipse menu Windows -> Preferences -> Validation, click “Disable All”, and then select the validator which you need. I selected “Classpath Dependency Validator” only. For startup action: on eclipse menu Windows -> Preferences, type “startup”, select “Startup and Shutdown”, untick the options you don’t need. (Thanks for David’s suggest, I’ve added the above 2 detail steps for readers) 4.Create a ram disk(virtual disk) on memory, and put your jdk on the ram disk. Then set the ImDisk driver to auto-load at Command Prompt with administrative privileges (for example right-click, start as Administrator), type: Some note: Oracle Radio. Java - Using GSON to parse a JSON array.
JSONLint - The JSON Validator. Cómo leer y escribir ficheros JSON en Java » Blog OpenAlfa. JSON (JavaScript Object Notation) es un formato utilizado en muchos entornos para el intercambio de datos estructurados. En la web oficial de json hay enlaces a librerías para el procesamiento de este formato en numerosos lenguajes, incluyendo PHP, Perl y Java. En el caso de éste último, hay más de veinte enlaces a distintas implementaciones de la funcionalidad de proceso de formato JSON. En este artículo vamos a examinar las posibilidades que ofrece google-gson, la implementación ofrecida por Google, con algunos ejemplos de código java para la lectura y escritura de ficheros en formato JSON. Descarga e instalación de la librería Comenzamos accediendo a la página principal de google-gson y descargando el fichero google-gson-2.2.4-release.zip (558 KB).
Descomprimimos el fichero. Como con cualquier otra librería java, este fichero deberá estar accesible a través de la variable de entorno CLASSPATH, o ser incluido explícitamente a la hora de compilar y ejecutar un programa que la utilice. 1. JMeter for testing RESTFul web services by posting JSON data and how to use BeanShell. We looked at JMeter tutorial with detailed steps in an earlier tutorial. This is a brief extension to cover JSON post. Now a days, a single page interactive web sites are very popular, and they post JSON based data back to the server to create a new record or to update an existing record. Step 1: Firstly, you need to set up the header "Content-Type" to "application/json" as shown below. Step 2: Specify the URL path and paste the relevant JSON data that gets posted as shown below. Now, there will be scenarios where posting a static JSON data is not good enough, and you will require to manipulate the JSON data.
BeanShell Sampler and BeanShell PostProcessor to manipulate JSON data within JMeter Step 1: Download a Java based JSON library jar to encode and decode JSON data. Step 2: Copy the downloaded jar file "json-simple-x.x.x.jar" to JMeter lib folder C:\myapps\apache-jmeter-2.9\lib. Step 3: Restart the JMeter. That's all to it. Tutoriales de Programacion Java: Struts 2 - Parte 5: Tipos de Results. ¿Qué es Java Mission Control? | Un poco de Java. Java - How to iterate request attribute in struts 2. Getting Started with Intalio|Server - Intalio|BPMS. Www.javahispano.org/storage/documentacion/Crear_Cliente_SOAP_Java_v2.pdf. Tutoriales de Programacion Java. Servicios REST (@FormParam,@PathParam) - Arquitectura Java. JAX-RS Servicios RESTFull en Java - Arquitectura Java.
Play framework - Home. Pruebas funcionales de servicios web con soapUI. Examples. Genbeta Dev. TheServerSide.com: your Java Community discussing server side development. Herramientas imprescindibles para un desarrollador de Java. Java Tips, Hacks, Updates - Architect's Diary. Desarroladores Android, Argentina.