Kita lanjutkan belajar struts2 dengan judul Tutorial Action Chaining Apache Struts2. Mari kita lihat apa itu Action Chaining

The framework provides the ability to chain multiple actions into a defined sequence or workflow. This feature works by applying a Chain Result to a given Action, and intercepting its target Action’s invocation with a Chaining Interceptor.
“As a rule, Action Chaining is not recommended. First explore other options, such as the Redirect After Post technique.”
sumber: apache

Sekarang ayo kita mulai Tutorial Action Chaining Apache Struts2:

• Buka folder workspace anda, jangan lupa pelajari dulu Tutorial Basic Apache Struts2. Karena kita akan melanjutkan source codenya.
• Buat folder “action-chaining-struts2” di workspace anda
• Copy file “pom.xml” dan folder “src” di folder “basic-struts2” tutorial sebelumnya.
• Buka file “pom.xml”, rubah artifact-id “basic-struts2” ke “action-chaining-struts2”
• Rubah juga tag name dan description “Belajar Action Chaining Struts2”
• Buka IDE eclipse
• Pilih import >> existing maven project >> browse ke folder “action-chaining-struts2” >> finish
• Project baru action-chaining-struts2 sudah berhasil di load

Mari kita mulai melakukan perubahan selanjutnya

• Create package “com.wijaksana.belajar.struts2.action”
• Tambahkan class sebagai controller/action dengan nama “ActionA” di package “com.wijaksana.belajar.struts2.action” dan tambah extend “ActionSupport”
• Tambahkan properti “name” dan setting getter/setter-nya
  
  Java

  private String name; public String getName() { return name; } public void setName(String name) { this.name = name; }

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  private String name;   public String getName() { return name; }   public void setName(String name) { this.name = name; }

• Tambahkan @Override method “execute”
• Tambahkan script dibawah ini pada method “execute”
  
  Java

  return SUCCESS;

  1	return SUCCESS;

• Tambahkan class sebagai controller/action dengan nama “ActionB” di package “com.wijaksana.belajar.struts2.action” dan tambah extend “ActionSupport”
• Tambahkan properti “name” dan setting getter/setter-nya
  
  Java

  private String name; public String getName() { return name; } public void setName(String name) { this.name = name; }

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  private String name;   public String getName() { return name; }   public void setName(String name) { this.name = name; }

• Tambahkan @Override method “execute”
• Tambahkan script dibawah ini pada method “execute”
  
  Java

  return SUCCESS;

  1	return SUCCESS;

• Buka file struts.xml (src/main/resources), replace script didalam tag <struts> dengan script dibawah ini
  
  XHTML

  <struts> <constant name="struts.enable.DynamicMethodInvocation" value="false"/> <constant name="struts.devMode" value="true"/> <package name="default" namespace="/" extends="struts-default"> <default-action-ref name="index"/> <action name="index"> <result>WEB-INF/index.jsp</result> </action> <action name="actionA" class="com.wijaksana.belajar.struts2.action.ActionA"> <param name="name">Chain from A to B</param> <result name="success" type="chain"> <param name="actionName">actionB</param> </result> </action> <action name="actionB" class="com.wijaksana.belajar.struts2.action.ActionB"> <result>WEB-INF/ActionB.jsp</result> </action> </package> </struts>

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  <struts>     <constant name="struts.enable.DynamicMethodInvocation" value="false"/>     <constant name="struts.devMode" value="true"/>       <package name="default" namespace="/" extends="struts-default">           <default-action-ref name="index"/>           <action name="index">             <result>WEB-INF/index.jsp</result>         </action>           <action name="actionA" class="com.wijaksana.belajar.struts2.action.ActionA">             <param name="name">Chain from A to B</param>             <result name="success" type="chain">                 <param name="actionName">actionB</param>             </result>         </action>           <action name="actionB" class="com.wijaksana.belajar.struts2.action.ActionB">             <result>WEB-INF/ActionB.jsp</result>         </action>       </package>   </struts>

• Tambahkan file index.jsp (src/main/webapp/WEB-INF), replace semua script dengan script dibawah ini:
  
  XHTML

  <%@ page contentType="text/html; charset=UTF-8" %> <%@ taglib prefix="s" uri="/struts-tags" %> <html> <head> <title>Action Chaining</title> </head> <body> <s:a action="actionA">Action A</s:a> </body> </html>

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  <%@ page contentType="text/html; charset=UTF-8" %> <%@ taglib prefix="s" uri="/struts-tags" %> <html> <head>     <title>Action Chaining</title> </head>   <body>   <s:a action="actionA">Action A</s:a>   </body> </html>

• Tambahkan file ActionB.jsp (src/main/webapp/WEB-INF), replace semua script dengan script dibawah ini:
  
  XHTML

  <%@ page contentType="text/html; charset=UTF-8" %> <%@ taglib prefix="s" uri="/struts-tags" %> <html> <head> <title>Action B</title> </head> <body> <h2>Value from Action A: <s:property value="name"/></h2> </body> </html>

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  <%@ page contentType="text/html; charset=UTF-8" %> <%@ taglib prefix="s" uri="/struts-tags" %> <html> <head>     <title>Action B</title> </head>   <body>   <h2>Value from Action A: <s:property value="name"/></h2>     </body> </html>

• Selesai, bisa kita test sekarang
• Caranya masih ingatkan untuk menjalankan programnya? iya bener, Klik kanan project name >> Run As >> Maven Build… >> pada isian goals ketik “jetty:run” >> klik RUN
• Buka browser http://localhost:8080

Selamat mencoba,

salam berbagi,
wijaksana