Click the Generate button to download the zip file.<\/li>\n<\/ol>\n2.2 Understanding the Project Structure<\/h3>\n
When you unzip the downloaded zip file, the following basic structure is created:<\/p>\n
my-spring-boot-app\/\n\u251c\u2500\u2500 src\/\n\u2502 \u251c\u2500\u2500 main\/\n\u2502 \u2502 \u251c\u2500\u2500 java\/\n\u2502 \u2502 \u2502 \u2514\u2500\u2500 com\/example\/myspringbootapp\/\n\u2502 \u2502 \u2502 \u2514\u2500\u2500 MySpringBootApp.java\n\u2502 \u2502 \u251c\u2500\u2500 resources\/\n\u2502 \u2502 \u2502 \u251c\u2500\u2500 application.properties\n\u2502 \u2514\u2500\u2500 test\/\n\u251c\u2500\u2500 pom.xml\n\u2514\u2500\u2500 ...\n<\/code><\/pre>\n3. Implementing Application Logic<\/h2>\n3.1 Creating a Simple REST API<\/h3>\n
Now let’s create a simple REST API. First, create a controller class named GreetingController.java<\/code>.<\/p>\npackage com.example.myspringbootapp;\n\nimport org.springframework.web.bind.annotation.GetMapping;\nimport org.springframework.web.bind.annotation.RequestParam;\nimport org.springframework.web.bind.annotation.RestController;\n\n@RestController\npublic class GreetingController {\n\n @GetMapping(\"\/greet\")\n public String greet(@RequestParam(value = \"name\", defaultValue = \"World\") String name) {\n return \"Hello, \" + name + \"!\";\n }\n}\n<\/code><\/pre>\nNow, run the project and access http:\/\/localhost:8080\/greet?name=John<\/code> in your browser to see the message “Hello, John!”.<\/p>\n4. Configuring the Database<\/h2>\n
This time, we will implement a simple CRUD API using H2 Database.<\/p>\n