Added a simple application showing form submission

7 files changed, 137 insertions, 0 deletions

diff --git a/maven/03-hello2-form-submission-webapp/.gitignore b/maven/03-hello2-form-submission-webapp/.gitignore
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+++ b/maven/03-hello2-form-submission-webapp/.gitignore
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+target
diff --git a/maven/03-hello2-form-submission-webapp/.vscode/settings.json b/maven/03-hello2-form-submission-webapp/.vscode/settings.json
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+++ b/maven/03-hello2-form-submission-webapp/.vscode/settings.json
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+{
+    "java.configuration.updateBuildConfiguration": "interactive"
+}
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diff --git a/maven/03-hello2-form-submission-webapp/README b/maven/03-hello2-form-submission-webapp/README
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+This webapp shows how a servlet is used to process a form submission.
+
+Command to generate this webapp from Maven archetype:
+
+mvn archetype:generate -DgroupId=com.example.servletapp \
+  -DartifactId=hello2 \
+  -DarchetypeArtifactId=maven-archetype-webapp \
+  -DinteractiveMode=false
+
+Open the project inside the IDE (like Visual Studio Code).
+
+Update the pom.xml file to the one provided here.
+
+Create directory src/main/java .
+
+Create a new package (say lk.ac.pdn.ceit.hello).
+
+Create a new Java class (name it PostExampleServlet).
+
+Complete the Java class (look at the given PostExampleServlet.java file).
+
+Replace the content of src/main/webapp/index.jsp with the one provided.
+
+Build the project:
+
+  mvn clean package
+
+Deploy the generated hello2.war to Tomcat and access it via http://localhost:8080/hello2/.
diff --git a/maven/03-hello2-form-submission-webapp/pom.xml b/maven/03-hello2-form-submission-webapp/pom.xml
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+++ b/maven/03-hello2-form-submission-webapp/pom.xml
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+<project xmlns="http://maven.apache.org/POM/4.0.0"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>com.example.servletapp</groupId>
+  <artifactId>hello2</artifactId>
+  <packaging>war</packaging>
+  <version>1.0-SNAPSHOT</version>
+  <name>hello2 Maven Webapp</name>
+  <url>http://maven.apache.org</url>
+
+  <properties>
+    <maven.compiler.source>25</maven.compiler.source>
+    <maven.compiler.target>25</maven.compiler.target>
+  </properties>
+
+  <dependencies>
+    <!-- Jakarta EE 11 API -->
+    <dependency>
+      <groupId>jakarta.platform</groupId>
+      <artifactId>jakarta.jakartaee-api</artifactId>
+      <version>11.0.0</version> <!-- Use latest 11 release -->
+      <scope>provided</scope>
+    </dependency>
+
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <version>3.8.1</version>
+      <scope>test</scope>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <finalName>hello2</finalName>
+
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-compiler-plugin</artifactId>
+        <version>3.13.0</version>
+        <configuration>
+          <source>${maven.compiler.source}</source>
+          <target>${maven.compiler.target}</target>
+        </configuration>
+      </plugin>
+    </plugins>
+  </build>
+</project>
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diff --git a/maven/03-hello2-form-submission-webapp/src/main/java/lk/ac/pdn/ceit/hello/PostExampleServlet.java b/maven/03-hello2-form-submission-webapp/src/main/java/lk/ac/pdn/ceit/hello/PostExampleServlet.java
new file mode 100644
index 0000000..f6ba0c6
--- /dev/null
+++ b/maven/03-hello2-form-submission-webapp/src/main/java/lk/ac/pdn/ceit/hello/PostExampleServlet.java
@@ -0,0 +1,35 @@
+
+package lk.ac.pdn.ceit.hello;
+
+import jakarta.servlet.ServletException;
+import jakarta.servlet.annotation.WebServlet;
+import jakarta.servlet.http.HttpServlet;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.io.PrintWriter;
+
+@WebServlet("/submitForm")
+public class PostExampleServlet extends HttpServlet {
+
+    @Override
+    protected void doPost(HttpServletRequest request, HttpServletResponse response)
+            throws ServletException, IOException {
+        
+        response.setContentType("text/html;charset=UTF-8");
+        String userName = request.getParameter("name");
+
+        try (PrintWriter out = response.getWriter()) {
+            out.println("<!DOCTYPE html>");
+            out.println("<html>");
+            out.println("<head>");
+            out.println("<title>Servlet Post Example Response</title>");
+            out.println("</head>");
+            out.println("<body>");
+            out.println("<h1>Thank you for your submission, " + (userName != null && !userName.isEmpty() ? userName : "Guest") + "!</h1>");
+            out.println("<p>Method used: " + request.getMethod() + "</p>");
+            out.println("</body>");
+            out.println("</html>");
+        }
+    }
+}
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diff --git a/maven/03-hello2-form-submission-webapp/src/main/webapp/WEB-INF/web.xml b/maven/03-hello2-form-submission-webapp/src/main/webapp/WEB-INF/web.xml
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--- /dev/null
+++ b/maven/03-hello2-form-submission-webapp/src/main/webapp/WEB-INF/web.xml
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+<!DOCTYPE web-app PUBLIC
+ "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
+ "http://java.sun.com/dtd/web-app_2_3.dtd" >
+
+<web-app>
+  <display-name>Archetype Created Web Application</display-name>
+</web-app>
diff --git a/maven/03-hello2-form-submission-webapp/src/main/webapp/index.jsp b/maven/03-hello2-form-submission-webapp/src/main/webapp/index.jsp
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index 0000000..77dd3d6
--- /dev/null
+++ b/maven/03-hello2-form-submission-webapp/src/main/webapp/index.jsp
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+<!DOCTYPE html>
+<html>
+<head>
+    <title>Jakarta EE 11 Servlet Post Example</title>
+</head>
+<body>
+    <h1>Enter your name</h1>
+    <form action="submitForm" method="POST">
+        <label for="name">Name:</label>
+        <input type="text" id="name" name="name">
+        <input type="submit" value="Submit">
+    </form>
+</body>
+</html>
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