This guide explains how to create, configure, and run a JSP project<\/strong> using Maven<\/strong>, VS Code (Antigravity)<\/strong>, and embedded Tomcat<\/strong>, without manually copying WAR files.<\/p>\n\n\n\n Make sure the following are installed:<\/p>\n\n\n\n Verify from terminal:<\/p>\n\n\n\n Run the following command in terminal:<\/p>\n\n\n\n This creates a standard Maven Web Application<\/strong> structure.<\/p>\n\n\n\n After creation, the folder structure will look like this:<\/p>\n\n\n\n Replace \/ update Edit or<\/p>\n\n\n\n These commands generate a Start embedded Tomcat using:<\/p>\n\n\n\n Tomcat will start on port 8081<\/strong>.<\/p>\n\n\n\n Open browser and visit:<\/p>\n\n\n\n For query parameter example:<\/p>\n\n\n\n JSP Development using Maven & VS Code (Step-by-Step) This guide explains how to create, configure, and run a JSP project using Maven, VS Code (Antigravity), and embedded Tomcat, without manually copying WAR files. 1\ufe0f\u20e3 Prerequisites Make sure the following are installed: Java JDK 8 or above Apache Maven VS Code \/ Antigravity VS Code Extensions: […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/codeinsightacademy.com\/blog\/wp-json\/wp\/v2\/posts\/2915"}],"collection":[{"href":"https:\/\/codeinsightacademy.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/codeinsightacademy.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/codeinsightacademy.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/codeinsightacademy.com\/blog\/wp-json\/wp\/v2\/comments?post=2915"}],"version-history":[{"count":7,"href":"https:\/\/codeinsightacademy.com\/blog\/wp-json\/wp\/v2\/posts\/2915\/revisions"}],"predecessor-version":[{"id":2930,"href":"https:\/\/codeinsightacademy.com\/blog\/wp-json\/wp\/v2\/posts\/2915\/revisions\/2930"}],"wp:attachment":[{"href":"https:\/\/codeinsightacademy.com\/blog\/wp-json\/wp\/v2\/media?parent=2915"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/codeinsightacademy.com\/blog\/wp-json\/wp\/v2\/categories?post=2915"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/codeinsightacademy.com\/blog\/wp-json\/wp\/v2\/tags?post=2915"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n\n\n\n1\ufe0f\u20e3 Prerequisites<\/h2>\n\n\n\n
java -version\nmvn -version\n<\/code><\/pre>\n\n\n\n
\n\n\n\n2\ufe0f\u20e3 Create Maven Web Project (JSP)<\/h2>\n\n\n\n
mvn archetype:generate \\\n-DgroupId=com.cia \\\n-DartifactId=jsp-demo \\\n-DarchetypeArtifactId=maven-archetype-webapp \\\n-DinteractiveMode=false\n<\/code><\/pre>\n\n\n\n
\n\n\n\n3\ufe0f\u20e3 Project Structure<\/h2>\n\n\n\n
jsp-demo\/\n \u251c\u2500\u2500 pom.xml\n \u2514\u2500\u2500 src\/\n \u2514\u2500\u2500 main\/\n \u2514\u2500\u2500 webapp\/\n \u2514\u2500\u2500 index.jsp\n<\/code><\/pre>\n\n\n\nindex.jsp<\/code> \u2192 entry point of the JSP application<\/li>pom.xml<\/code> \u2192 Maven configuration file<\/li><\/ul>\n\n\n\n
\n\n\n\n4\ufe0f\u20e3 Configure
pom.xml<\/code><\/h2>\n\n\n\npom.xml<\/code> with the following configuration:<\/p>\n\n\n\nKey Points:<\/h3>\n\n\n\n
war<\/code><\/li>maven-war-plugin<\/code><\/li>tomcat7-maven-plugin<\/code><\/li><project xmlns=\"http:\/\/maven.apache.org\/POM\/4.0.0\" xmlns:xsi=\"http:\/\/www.w3.org\/2001\/XMLSchema-instance\"\n xsi:schemaLocation=\"http:\/\/maven.apache.org\/POM\/4.0.0 http:\/\/maven.apache.org\/maven-v4_0_0.xsd\">\n <modelVersion>4.0.0<\/modelVersion>\n <groupId>com.cia<\/groupId>\n <artifactId>demo<\/artifactId>\n <packaging>war<\/packaging>\n <version>1.0-SNAPSHOT<\/version>\n <name>demo Maven Webapp<\/name>\n <url>http:\/\/maven.apache.org<\/url>\n \n <dependencies>\n <dependency>\n <groupId>com.mysql<\/groupId>\n <artifactId>mysql-connector-j<\/artifactId>\n <version>8.0.33<\/version>\n <\/dependency>\n<\/dependencies>\n\n <build>\n <finalName>demo<\/finalName>\n<plugins>\n <!-- WAR Plugin (updated for modern Java) -->\n <plugin>\n <groupId>org.apache.maven.plugins<\/groupId>\n <artifactId>maven-war-plugin<\/artifactId>\n <version>3.4.0<\/version>\n <\/plugin>\n\n <!-- Embedded Tomcat -->\n <plugin>\n <groupId>org.apache.tomcat.maven<\/groupId>\n <artifactId>tomcat7-maven-plugin<\/artifactId>\n <version>2.2<\/version>\n <configuration>\n <path>\/jsp-demo<\/path>\n <port>8081<\/port>\n <\/configuration>\n <\/plugin>\n\n <\/plugins>\n <\/build>\n<\/project>\n\n<\/code><\/pre>\n\n\n\n
\n\n\n\n5\ufe0f\u20e3 Sample
index.jsp<\/code><\/h2>\n\n\n\nsrc\/main\/webapp\/index.jsp<\/code>:<\/p>\n\n\n\n<html>\n<body>\n <h2>Hello World!<\/h2>\n\n <!-- Read number from query parameter and print square -->\n\n <%\n String num = request.getParameter(\"number\");\n if (num != null) {\n int x = Integer.parseInt(num);\n %>\n <p>Square of <%= x %> is <%= x * x %><\/p>\n <%\n } else {\n %>\n <p>Please pass number as query parameter<\/p>\n <p>Example: ?number=5<\/p>\n <%\n }\n %>\n<\/body>\n<\/html>\n<\/code><\/pre>\n\n\n\nSample 2<\/h2>\n\n\n\n
<html>\n<body>\n\n<h2>Read POST Parameter in JSP<\/h2>\n\n<form method=\"post\" action=\"index.jsp\">\n Enter number:\n <input type=\"text\" name=\"number\">\n <input type=\"submit\" value=\"Submit\">\n<\/form>\n\n<%\n String num = request.getParameter(\"number\");\n if (num != null) {\n int x = Integer.parseInt(num);\n%>\n <p>Square of <%= x %> is <%= x * x %><\/p>\n<%\n }\n%>\n\n<\/body>\n<\/html>\n<\/code><\/pre>\n\n\n\nSample 3 with database connection<\/h2>\n\n\n\n
<%@ page import=\"java.sql.*\" %>\n\n <% \nString url=\"jdbc:mysql:\/\/localhost:3306\/<your_database_name<\/strong>>?useSSL=false&serverTimezone=UTC\" ; \nString user=\"your_db_username<\/strong>\" ; \nString password=\"your_db_password<\/strong>\"; \nConnection con=null; \nStatement stmt=null; \nResultSet rs=null; \ntry {\n Class.forName(\"com.mysql.cj.jdbc.Driver\"); \n con=DriverManager.getConnection(url, user, password);\n stmt=con.createStatement(); \n rs=stmt.executeQuery(\"SELECT name FROM users<\/strong>\"); %>\n\n <h3>Users from DB:<\/h3>\n <ul>\n <% while (rs.next()) { %>\n <li>\n <%= rs.getString(\"name\") %>\n <\/li>\n <% } %>\n <\/ul>\n\n<% } catch (Exception e) { %>\n <p style=\"color:red;\">\n <%= e.getMessage() %>\n <\/p>\n<% } finally { \n if (rs !=null) \n rs.close(); \n if (stmt !=null) stmt.close(); \n if (con !=null) con.close(); \n} %><\/code><\/pre>\n\n\n\n
\n\n\n\n6\ufe0f\u20e3 Maven Build Commands (What & Why)<\/h2>\n\n\n\n
Clean old build files<\/h3>\n\n\n\n
mvn clean\n\nor\n\nmvn clean install\n<\/code><\/pre>\n\n\n\nBuild WAR file<\/h3>\n\n\n\n
mvn package\n<\/code><\/pre>\n\n\n\nmvn install\n<\/code><\/pre>\n\n\n\n.war<\/code> file inside the target<\/code> directory.<\/p><\/blockquote>\n\n\n\n
\n\n\n\n7\ufe0f\u20e3 Run JSP Application (No WAR Copy Required)<\/h2>\n\n\n\n
mvn tomcat7:run\n<\/code><\/pre>\n\n\n\n
\n\n\n\n8\ufe0f\u20e3 Access Application in Browser<\/h2>\n\n\n\n
http://localhost:8081\/jsp-demo\/\n<\/code><\/pre>\n\n\n\nhttp://localhost:8081\/jsp-demo\/index.jsp?number=5\n<\/code><\/pre>\n\n\n\nOutput:<\/h3>\n\n\n\n
Square of 5 is 25\n<\/code><\/pre>\n\n\n\n
\n\n\n\n9\ufe0f\u20e3 Important Notes for Students<\/h2>\n\n\n\n
\n\n\n\n10\ufe0f\u20e3 Common Mistakes to Avoid<\/h2>\n\n\n\n
Mistake<\/th> Reason<\/th><\/tr><\/thead> Using Live Server<\/td> JSP not supported<\/td><\/tr> Using <%! %><\/code> for request<\/td>Causes compilation error<\/td><\/tr> Running .war<\/code> file<\/td>WAR is not executable<\/td><\/tr> Port 8080 conflict<\/td> Use 8081 or higher<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\n\n\n\n11\ufe0f\u20e3 Summary<\/h2>\n\n\n\n
\n","protected":false},"excerpt":{"rendered":"