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    Spring Boot JSP Example

    Spring Boot aims to make it easy to create Spring-powered, production-grade applications and services with minimum fuss. It takes an opinionated view of the Spring platform so that new and existing users can quickly get to the bits they need.

    JSP is a Java-based server-side template engine to create dynamic web pages.

    Tools and technologies used

    1. Spring boot 2+
    2. Spring framework 5+
    3. IDE – Eclipse STS
    4. Maven 3+
    5. Embedded tomcat server 8.5+
    6. JSP/JSTL

    Development Steps

    • Create Spring Boot project.
    • Add maven dependencies.
    • Create Spring MVC Controller.
    • Spring Boot JSP ViewResolver Configuration.
    • Create JSP page.
    • Run app and demo.

    1. Create a Spring Boot Application

      There are many ways to create a Spring Boot application. You can refer below articles to create a Spring Boot application.

      >> Create Spring Boot Project With Spring Initializer

      >> Create Spring Boot Project in Spring Tool Suite [STS]

    2. Add maven dependencies

      < ?xml version="1.0" encoding="UTF-8"?>
< 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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
< modelVersion>4.0.0< /modelVersion>
< parent>
< groupId>org.springframework.boot< /groupId>
< artifactId>spring-boot-starter-parent< /artifactId>
< version>2.2.6.RELEASE< /version>
< relativePath />
< !-- lookup parent from repository -->
< /parent>
< groupId>net.ducatindia< /groupId>
< artifactId>springboot-jsp-hello-world-example< /artifactId>
< version>0.0.1-SNAPSHOT< /version>
< name>springboot-jsp-hello-world-example< /name>
< description>Demo project for Spring Boot and JSP< /description>
< packaging>war< /packaging>
< properties>
< java.version>1.8< /java.version>
< /properties>
< dependencies>
< dependency>
< groupId>org.springframework.boot< /groupId>
< artifactId>spring-boot-starter-web< /artifactId>
< /dependency>
< dependency>
< groupId>org.springframework.boot< /groupId>
< artifactId>spring-boot-starter-thymeleaf< /artifactId>
< /dependency>
< dependency>
< groupId>org.apache.tomcat.embed< /groupId>
< artifactId>tomcat-embed-jasper< /artifactId>
< /dependency>
< !-- JSTL for JSP -->
< dependency>
< groupId>javax.servlet< /groupId>
< artifactId>jstl< /artifactId>
< /dependency>
< dependency>
< groupId>org.springframework.boot< /groupId>
< artifactId>spring-boot-starter-test< /artifactId>
< scope>test< /scope>
< exclusions>
< exclusion>
< groupId>org.junit.vintage< /groupId>
< artifactId>junit-vintage-engine< /artifactId>
< /exclusion>
< /exclusions>
< /dependency>
< /dependencies>
< build>
< finalName>springboot-webapp< /finalName>
< plugins>
< plugin>
< groupId>org.springframework.boot< /groupId>
< artifactId>spring-boot-maven-plugin< /artifactId>
< /plugin>
< /plugins>
< /build>
< /project>

      In order to work with JSP/JSTL, we need to add below two dependencies:

      < dependency>
< groupId>org.apache.tomcat.embed< /groupId>
< artifactId>tomcat-embed-jasper< /artifactId>
< /dependency>
< !-- JSTL for JSP -->
< dependency>
< groupId>javax.servlet< /groupId>
< artifactId>jstl< /artifactId>
< /dependency>

    3. Create Spring MVC Controller

      Let’s create a simple spring MVC controller with method handler:

      packagenet.ducatindia.springboot.controller;

importorg.springframework.stereotype.Controller;
importorg.springframework.ui.Model;
importorg.springframework.web.bind.annotation.GetMapping;
importorg.springframework.web.bind.annotation.RequestParam;

@Controller
publicclassHelloController {

@GetMapping({
"/",
"/hello"
    })
publicStringhello(@RequestParam(value="name", defaultValue="World",
required=true) Stringname, Modelmodel) {
model.addAttribute("name", name);
return"hello";
    }
}

    4. JSP ViewResolver Configuration in application.properties file

      Let’s add below properties in application.properties file to configure view resolver for JSP:

      spring.mvc.view.prefix=/WEB-INF/jsp/

      spring.mvc.view.suffix=.jsp

    5. Create JSP page

      Let’s create a simple JSP page under webapp/WEB-INF/jsp folder structure. If webapp folder not exists then create webapp/WEB-INF/jsp folder structure and then create JSP pages under it.

      <%@ pagelanguage="java"contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%>
< !DOCTYPE html>
< html>
< head>
< metacharset="ISO-8859-1">
< title>Insert title here< /title>
< /head>
< body>
< h2align="center"> Hello ${name}!< /h2>
< /body>
< /html>

    6. Run app and demo

      Let’s run this spring boot application from IDE -> Right click -> Run As -> Java Application:

      packagenet.ducatindia.springboot;

importorg.springframework.boot.SpringApplication;
importorg.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
publicclassSpringbootJspHelloWorldExampleApplication {

publicstaticvoidmain(String[] args) {
SpringApplication.run(SpringbootJspHelloWorldExampleApplication.class, args);
    }
}

     

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