Quick Pickle XDoclet 1 - Servlet Simple Instance

XDoclet is an extended Javadoc Doclet engine. It is a common Java tool that allows you to create your own javadoc @tags and use the Templet Engening in the XDoclet to generate source code or other files (eg XML Deployment Descriptors) based on the TEMPLET ENGING in the xdoclet.

I don't want to say more about the architecture and working principle of XDoclet, you can google. I just want to quickly pick up the xdoclet through a simple instance. Because I found that when I learned a new knowledge point, there are a lot of concepts, but the example is very small, it is difficult to quickly digest conceptual things through instances. Instead of saying a lot of books, it is better to give me an example, so that I try to figure it out.

Before watching this article, it is best to be familiar with Ant.

First, download, installation, and configuration

1. Software required

● Ant 1.6.2

http://ant.apache.org

download

http://mirror.apache.or.kr/ant/binaries/apache-ant-1.6.2-bin.zip

● xDoclet 1.2.2

http://xdoclet.sourceforge.net/xdoclet/

download

http://prdownloads.sourceforge.net/xdoclet/xdoclet-bin-1.2.2.zip?download

● Tomcat 5.0.28

Http://jakarta.apache.org/tomcat/

download

http://apache.justdn.org/jakarta/tomcat-5/v5.0.28/bin/jakarta-tomcat-5.0.28.zip

2. Installation

F: / j2sdk jdk directory

F: / java / ant Ant catalog

F: / java / xdoclet xdoclet directory

F: / java / jakarta-tomcat tomcat directory

Here, it is important to set up Ant_home in the environment variable, and point to the ANT installation directory, but also add "% Ant_home% / bin in the PATH variable;" can be referenced

Java environment variable settings.

Second, a simple example

Writing code

Create a D: / XDocletsample directory, establish 3 files in accordance with the following structure.

D: / xdocletsample/src/javamxj/helloservlet.java

/ *

* @author javamxj (9cbs blog) creation date 2005-1-7

* /

Package javamxj;

Import javax.servlet. *;

Import javax.servlet.http. *;

/ **

* @ Web.Servlet name = "Helloservlet"

* Display-name = "Hello Servlet"

* Load-on-startup = "1"

* @ Web.Servlet-init-param name = "Hello"

* Value = "$ {hello.servlet}"

* @ Web.Servlet-maping url-pattern = "/ hello / *"

* /

Public class helloservlet extends httpservlet {public void init (servletconfig config) throws servletexception {

// Get initialization parameters from web.xml

Super.init (config);

}

Protected Void Doget (httpservletRequest Request,

HttpservletResponse response) Throws servletexception,

Java.io.ioException {

ServletConfig Config = this.getServletConfig ();

String h = config.getinitParameter ("Hello");

Try {

// Set the document type first

Response.setContentType ("text / html; charset = GBK");

// Get output flow

Java.io.printwriter out = response.getwriter ();

Out.println ("