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1 It is quite easy to add Groovy support. Once the support is in place you can use Groovy as you would use regular Java. As a matter of fact to test out Groovy we will create a Struts2 action with it!
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4 Following assumes we have set up a basic struts2 application using Maven:
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6 1) In Netbeans, expand the "Project Files" and open pom.xml.
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8 2a) Locate the maven compiler plugin, which in my poms typically looks like the following:
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10
11 <plugin>
12 <groupId>org.apache.maven.plugins</groupId>
13 <artifactId>maven-compiler-plugin</artifactId>
14 <version>2.3.2</version>
15 <configuration>
16 <source>1.7</source>
17 <target>1.7</target>
18 <compilerArguments>
19 <endorseddirs>${endorsed.dir}</endorseddirs>
20 </compilerArguments>
21 </configuration>
22 </plugin>
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24
25 2b) Edit this pom.xml such that the above looks like the following:
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27 <plugin>
28 <groupId>org.apache.maven.plugins</groupId>
29 <artifactId>maven-compiler-plugin</artifactId>
30 <version>2.3.2</version>
31 <configuration>
32 **~ <compilerId>groovy-eclipse-compiler</compilerId>**
33 **~ <verbose>true</verbose>**
34 <source>1.7</source>
35 <target>1.7</target>
36 </configuration>
37 **~ <dependencies>**
38 **~ <dependency>**
39 **~ <groupId>org.codehaus.groovy</groupId>**
40 **~ <artifactId>groovy-eclipse-compiler</artifactId>**
41 **~ <version>2.6.0-01</version>**
42 **~ </dependency>**
43 **~ </dependencies>**
44 </plugin>
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46
47 3) Add the following dependancy
48
49 <dependency>
50 <groupId>org.codehaus.groovy</groupId>
51 <artifactId>groovy-all</artifactId>
52 <version>1.8.4</version>
53 <scope>provided</scope>
54 </dependency>
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56 4) Download a copy of groovy-all-1.8.4.jar and copy it into the glassfish lib folder (partial path on my system is .../glassfish-3.1.2/glassfish/lib/groovy-all-1.8.4.jar).
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59 ----
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61 With that bit of initial configuration out of the way we can now use Groovy quite seemlessly in our project.
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64 == Create a Struts2 action (will use the struts2 conventions plugin to avoid needless configuration) ==
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66 (% style="font-weight: bold;" %)In Netbeans 7.1, create a new package under source packages called com.kenmcwilliams.action.groovy.
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68 (% style="font-weight: bold;" %)Right click that folder and create a new groovy file (New->Other->Category:Groovy->Groovy Class).(% style="font-weight: normal;" %) If the following options does not exist you will need at add Groovy **(Tools(menu)->Plugins->Availible Plugins(tab)->select "Groovy and Grails")**(%%).
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70 //package com.kenmcwilliams.action.groovy//
71 //import com.opensymphony.xwork2.ActionSupport;//
72 //import com.opensymphony.xwork2.Action;//
73 \\// class Gest extends ActionSupport{//
74 // String greeting = "Hello from Groovy!";//
75 // public String execute(){//
76 // println "Grooooovy!"//
77 // return "success";//
78 // }//
79 //}//
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81 Create a view to render the action:
82
83 //<%@taglib prefix="s" uri="/struts-tags"%>//
84 //<%@page contentType="text/html" pageEncoding="UTF-8"%>//
85 //<!DOCTYPE html>//
86 //<html>//
87 // <head>//
88 // <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">//
89 // <title>Message from Groovy</title>//
90 // </head>//
91 // <body>//
92 // <h1>Message from Groovy</h1>//
93 // <s:property value="greeting"/>//
94 // </body>//
95 //</html>//
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97
98 That's all there is to it!
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