Initial Commit

src/main/java/com/example/springdemo/SpringDemoApplication.java

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+package com.example.springdemo;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class SpringDemoApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(SpringDemoApplication.class, args);
+	}
+
+}

src/main/java/com/example/springdemo/config/DataBaseProperties.java

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+package com.example.springdemo.config;
+
+import lombok.Data;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.stereotype.Component;
+
+@Data
+@Component
+@ConfigurationProperties(prefix = "business.security")
+public class DataBaseProperties {
+
+    private String dbUrl;
+
+    //@Value("${db.username}")
+    private String username ;
+
+    //@Value("${db.password}")
+    private String password ;
+}
+

src/main/java/com/example/springdemo/controller/StudentController.java

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+package com.example.springdemo.controller;
+
+import com.example.springdemo.entities.Business;
+import com.example.springdemo.config.DataBaseProperties;
+
+import jakarta.annotation.Resource;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+import java.util.Objects;
+
+@RestController
+@RequestMapping("/student")
+public class StudentController {
+
+    @Resource
+    DataBaseProperties dbProps;
+
+    @GetMapping("/get")
+    public List<String> getStudent() {
+        //  DataBaseProperties dbProps = new DataBaseProperties();
+        return List.of(dbProps.getUsername(), dbProps.getPassword(), dbProps.getDbUrl());
+    }
+
+    @GetMapping("/getBy")
+    public Business getStudentById(@RequestParam String id) {
+
+        var bs = Business.builder()
+                .name(id)
+                .tel(dbProps.getPassword())
+                .build();
+
+        if (!Objects.equals(bs.getTel(), "")) {
+            bs.setTel("");
+        }
+
+        return bs;
+    }
+}

src/main/java/com/example/springdemo/entities/Business.java

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+package com.example.springdemo.entities;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+public class Business {
+    private String name;
+    private String tel;
+    private String address;
+}

src/main/resources/application.properties

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+