JSP

Java Server Pages

Maven example

   1 cd /tmp
   2 mkdir jspExample
   3 cd jspExample

pom.xml

   1 <project>
   2     <modelVersion>4.0.0</modelVersion>
   3     <groupId>test</groupId>
   4     <artifactId>dummy</artifactId>
   5     <version>1.0</version>
   6     <packaging>war</packaging>
   7     <dependencies>
   8         <dependency> 
   9             <groupId>javax</groupId>
  10             <artifactId>javaee-web-api</artifactId>
  11             <version>6.0</version>
  12             <scope>provided</scope>
  13         </dependency> 
  14     </dependencies>
  15 </project>

   1 mkdir -p src/main/webapp/WEB-INF

web.xml

nano src/main/webapp/WEB-INF/web.xml

   1 <web></web>

index.jsp

nano src/main/webapp/index.jsp

   1 <%@page import="org.allowed.bitarus.Handler" %>
   2 <jsp:useBean id="test" class="org.allowed.bitarus.TestBean" />
   3 <% //Handler h = new Handler(request,response,out); %>
   4 <% Handler h = new Handler(pageContext); %>
   5 <html>
   6     <body>        
   7         <p>Hello</p>
   8         <p>World <jsp:getProperty name="test" property="name" /> </p>
   9         <% h.writeHandler(); %>
  10         <h2><% out.print("Your IP address is " + request.getRemoteAddr()); %></h2>
  11         <h3><% h.writeIP(); %></h3>
  12     </body>
  13 </html>

   1 mkdir -p src/main/java/org/allowed/bitarus

TestBean.java

nano src/main/java/org/allowed/bitarus/TestBean.java

   1 /*
   2 mkdir -p src/main/java/org/allowed/bitarus
   3 kate src/main/java/org/allowed/bitarus/TestBean.java
   4 */
   5 package org.allowed.bitarus;
   6 import java.util.logging.Logger;
   7 import java.util.logging.Level;
   8 
   9 public class TestBean{
  10     private String name;
  11     private Logger logger;
  12     
  13     public TestBean(){
  14         this.logger = Logger.getLogger(this.getClass().getName() );
  15         this.logger.log(Level.INFO,"Created test bean");
  16         this.name="Ioooo";
  17     }   
  18     
  19     public String getName(){
  20         this.logger.info("getName called");
  21         return this.name;        
  22     }
  23     
  24     public void setName(String name){
  25         this.name=name;        
  26     }
  27 }

Handler.java

nano src/main/java/org/allowed/bitarus/Handler.java

   1 package org.allowed.bitarus;
   2 
   3 import java.util.logging.Logger;
   4 import java.util.logging.Level;
   5 import javax.servlet.ServletRequest;
   6 import javax.servlet.ServletResponse;
   7 import javax.servlet.jsp.JspWriter;
   8 import javax.servlet.jsp.PageContext;
   9 
  10 /*
  11 mkdir -p src/main/java/org/allowed/bitarus
  12 http://localhost:8081/dummy-1.0/index.jsp?user=TestASD
  13 */
  14 public class Handler{
  15     private ServletRequest request;
  16     private ServletResponse response;
  17     private JspWriter out;
  18     
  19     public Handler(ServletRequest request, ServletResponse response,JspWriter out){
  20         this.request = request;
  21         this.response = response;        
  22         this.out = out;
  23     }
  24 
  25     public Handler(PageContext pageContext){
  26         this.request = pageContext.getRequest();
  27         this.response = pageContext.getResponse();        
  28         this.out = (JspWriter) pageContext.getAttribute(pageContext.OUT) ;
  29     }
  30     
  31     public void writeHandler(){
  32         try{
  33           this.out.println(String.format("<p>Handler up %s</p>" , this.request.getParameter("user") ));
  34         }
  35         catch(Exception ex){            
  36         }          
  37     }
  38     
  39     public void writeIP(){
  40         try{
  41             this.out.print("!!! Your IP address is " + this.request.getRemoteAddr());
  42         }
  43         catch(Exception ex){            
  44         }          
  45     }
  46         
  47 }

Structure:

.
├── pom.xml
└── src
    └── main
        ├── java
        │   └── org
        │       └── allowed
        │           └── bitarus
        │               ├── Handler.java
        │               └── TestBean.java
        └── webapp
            ├── index.jsp
            └── WEB-INF
                └── web.xml

8 directories, 5 files

   1 ab -n 100 -c 100 http://localhost:8081/dummy-1.0/index.jsp?user=TestASD

Deploy in

Tomcat Version	JVM Version	OS Name	OS Version	Hostname
Apache Tomcat/7.0.53	1.7.0_15-b03	Linux	3.2.45-smp	darkstar

   1 git clone https://github.com/vborrego/jsp-example.git

-  ⇤ ← Revision 10 as of 2018-05-09 20:49:53 → 
  Size: 4486
  Editor: localhost
  Comment:
+   ← Revision 30 as of 2025-11-22 10:44:45 → ⇥
  Size: 4613
  Editor: vitor
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 1:
+<<TableOfContents(2)>>
-Line 5:
+Line 7:
- * cd /tmp
 * mkdir jspExample
 * cd jspExample
 * nano pom.xml
+{{{#!highlight sh
cd /tmp
mkdir jspExample
cd jspExample
}}}

=== pom.xml ===
-Line 26:
+Line 31:
- * mkdir -p src/main/webapp/WEB-INF
 * nano src/main/webapp/WEB-INF/web.xml
+{{{#!highlight sh
mkdir -p src/main/webapp/WEB-INF
}}}


=== web.xml ===
 * nano src/main/webapp/WEB-INF/web.xml
-Line 31:
+Line 42:
+=== index.jsp ===
-Line 32:
+Line 46:
-Line 47:
+Line 62:
- * mkdir -p src/main/java/org/allowed/bitarus
+{{{#!highlight sh
mkdir -p src/main/java/org/allowed/bitarus
}}}

=== TestBean.java ===
-Line 49:
+Line 69:
-Line 78:
+Line 100:
+=== Handler.java ===
-Line 79:
+Line 104:
-Line 149:
+Line 175:
- * ab -n 100 -c 100 http://localhost:8081/dummy-1.0/index.jsp?user=TestASD
+{{{#!highlight sh
ab -n 100 -c 100 http://localhost:8081/dummy-1.0/index.jsp?user=TestASD
}}}
-Line 152:
+Line 180:
-|| '''Tomcat Version'''	|| '''JVM Version''' || '''JVM Vendor''' || '''OS Name''' || '''OS Version'''	|| '''OS Architecture''' || '''Hostname''' || '''IP Address''' ||
|| Apache Tomcat/7.0.53	|| 1.7.0_15-b03	|| Oracle Corporation	|| Linux || 3.2.45-smp || i386	||  darkstar || 127.0.0.1||
+|| '''Tomcat Version'''	|| '''JVM Version''' || '''OS Name''' || '''OS Version'''	|| '''Hostname''' ||
|| Apache Tomcat/7.0.53	|| 1.7.0_15-b03	|| Linux || 3.2.45-smp || darkstar ||
-Line 155:
+Line 183:
- * git clone https://github.com/vborrego/jsp-example.git
+{{{#!highlight sh
git clone https://github.com/vborrego/jsp-example.git
}}}