<?xml version=\"1.0\" encoding=\"UTF-8\"?>\r\n<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\/xsd\/maven-4.0.0.xsd\">\r\n<modelVersion>4.0.0<\/modelVersion>\r\n\r\n<groupId>com.ttn.aem<\/groupId>\r\n<artifactId>springboot<\/artifactId>\r\n<version>1.0.0<\/version>\r\n<packaging>jar<\/packaging>\r\n\r\n<name>Spring Boot Blank Project (from ;\r\n\r\n<parent>\r\n<groupId>org.springframework.boot<\/groupId>\r\n<artifactId>spring-boot-starter-parent<\/artifactId>\r\n<version>1.4.1.RELEASE<\/version>\r\n<\/parent>\r\n\r\n<properties>\r\n<project.build.sourceEncoding>UTF-8<\/project.build.sourceEncoding>\r\n<!-- <start-class>com.ttn.aem.springboot.main.App<\/start-class> -->\r\n<java.version>1.8<\/java.version>\r\n<lombok.version>1.14.8<\/lombok.version>\r\n<log4jdbc.log4j2.version>1.16<\/log4jdbc.log4j2.version>\r\n<rest.assured.version>2.3.3<\/rest.assured.version>\r\n<\/properties>\r\n\r\n<dependencies>\r\n<dependency>\r\n<groupId>org.springframework.boot<\/groupId>\r\n<artifactId>spring-boot-starter-web<\/artifactId>\r\n<\/dependency>\r\n<\/dependencies>\r\n<build>\r\n<finalName>spring-boot-${project.version}<\/finalName>\r\n<plugins>\r\n<plugin>\r\n<groupId>org.springframework.boot<\/groupId>\r\n<artifactId>spring-boot-maven-plugin<\/artifactId>\r\n<dependencies>\r\n<dependency>\r\n<groupId>org.springframework<\/groupId>\r\n<artifactId>springloaded<\/artifactId>\r\n<version>${spring-loaded.version}<\/version>\r\n<\/dependency>\r\n<\/dependencies>\r\n<\/plugin>\r\n<\/plugins>\r\n<\/build>\r\n\r\n<\/project>\r\n<\/pre>\n3. You will get 3 generated classes. Out of these, we need only App.java class which we will use as a starter class for our application. Here is how your App.java will look\u00a0\u00a0–<\/p>\n
package com.ttn.aem.springboot.main;<\/p>\n
import org.springframework.boot.SpringApplication;
\nimport org.springframework.boot.autoconfigure.SpringBootApplication;<\/p>\n
@SpringBootApplication(scanBasePackages=\"com.ttn.aem.springboot.controllers\")\r\npublic class App {\r\n public static void main(String[] args) {\r\n SpringApplication.run(App.class, args);\r\n }\r\n}\r\n<\/pre>\n@SpringBootApplication works as entry point for the application and bootstrap spring. When applicaiton starts spring boot search for the configuration annotation.<\/p>\n
We can also use @EnableAutoConfiguration and @ComponentScan instead of @SpringBootApplication, depending on the preferences.<\/p>\n
We have also given scanBasePackages along with @SpringBootApplication so that it is easy to\u00a0look for the configuration or the classes for which beans needs to be created.<\/p>\n
4. Here is our controller code –<\/p>\n
package com.ttn.aem.springboot.controllers;\r\n\r\nimport org.springframework.beans.factory.annotation.Autowired;\r\nimport org.springframework.web.bind.annotation.RequestMapping;\r\nimport org.springframework.web.bind.annotation.RequestParam;\r\nimport org.springframework.web.bind.annotation.RestController;\r\n\r\n@RestController\r\npublic class HelloController {\r\n\r\n @RequestMapping(\"\/\")\r\n public String hello() {\r\n return \"Hello World!\";\r\n }\r\n\r\n @RequestMapping(\"calc\")\r\n public int calc(@RequestParam int left, @RequestParam int right) {\r\n return left+right;\r\n }\r\n}\r\n<\/pre>\nRestController is pretty straight forward isn’t it?<\/p>\n
And we already have instructed spring to scan com.ttn.aem.springboot.controllers package<\/p>\n
What’s next?<\/p>\n
That’s all – Our application is ready to build and run.<\/p>\n
run mvn clean instal<\/span><\/pre>\nThen<\/p>\n
java -jar target\/<jarname>.jar<\/span><\/pre>\nNow go to\u00a0the below link:<\/p>\n
http:\/\/localhost:8000\/calc?left=10&right=5 and http:localhost:8080<\/p>\n
You see it works. Was it ever so easy to create a spring rest application?<\/p>\n
\n- No Web.xml<\/li>\n
- No dispatcher-servlet.xml<\/li>\n
- No applicationContext.xml<\/li>\n
- No Annotation configuration classes<\/li>\n
- and the list goes on.<\/li>\n<\/ul>\n
Please share your thoughts in the comments below.<\/p>\n","protected":false},"excerpt":{"rendered":"
I have come up with this blog that outlines: What is Spring Boot? Why do we use it? How to get started? 1. What is Spring Boot? Spring boot from Spring is just another project enabling\u00a0developers to create stand-alone, production-grade Spring based applications. 2. Why do we use it? Create stand-alone Spring applications Embed Tomcat, […]<\/p>\n","protected":false},"author":992,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":3},"categories":[446,1],"tags":[4844,4841,1202],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/posts\/41600"}],"collection":[{"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/users\/992"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/comments?post=41600"}],"version-history":[{"count":0,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/posts\/41600\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/media?parent=41600"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/categories?post=41600"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/tags?post=41600"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}