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dheeraj-code-creatordheeraj-code-creator
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‎pom.xml‎

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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.spring.rest</groupId>
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<artifactId>springboot-connection-pool</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<name>springboot-connection-pool</name>
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<parent>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-parent</artifactId>
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<version>2.0.0.BUILD-SNAPSHOT</version>
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<relativePath />
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<!-- lookup parent from repository -->
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</parent>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
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<java.version>1.8</java.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-web</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-data-jpa</artifactId>
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</dependency>
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<!-- Spring Boot Data 2.0 includes HikariCP by default -->
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<!-- dependency>
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<groupId>com.zaxxer</groupId>
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<artifactId>HikariCP</artifactId>
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<version>3.1.0</version>
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</dependency -->
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<dependency>
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<groupId>com.h2database</groupId>
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<artifactId>h2</artifactId>
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<scope>runtime</scope>
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</dependency>
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<dependency>
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<groupId>log4j</groupId>
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<artifactId>log4j</artifactId>
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<version>1.2.17</version>
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</dependency>
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<!-- https://mvnrepository.com/artifact/log4j/log4j -->
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<dependency>
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<groupId>log4j</groupId>
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<artifactId>log4j</artifactId>
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<version>1.2.17</version>
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</dependency>
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<dependency>
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<groupId>org.modelmapper</groupId>
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<artifactId>modelmapper</artifactId>
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<version>2.3.0</version>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-test</artifactId>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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</plugin>
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</plugins>
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</build>
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<repositories>
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<repository>
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<id>spring-snapshots</id>
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<name>Spring Snapshots</name>
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<url>https://repo.spring.io/snapshot</url>
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<snapshots>
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<enabled>true</enabled>
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</snapshots>
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</repository>
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<repository>
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<id>spring-milestones</id>
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<name>Spring Milestones</name>
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<url>https://repo.spring.io/milestone</url>
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<snapshots>
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<enabled>false</enabled>
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</snapshots>
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</repository>
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</repositories>
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<pluginRepositories>
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<pluginRepository>
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<id>spring-snapshots</id>
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<name>Spring Snapshots</name>
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<url>https://repo.spring.io/snapshot</url>
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<snapshots>
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<enabled>true</enabled>
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</snapshots>
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</pluginRepository>
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<pluginRepository>
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<id>spring-milestones</id>
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<name>Spring Milestones</name>
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<url>https://repo.spring.io/milestone</url>
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<snapshots>
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<enabled>false</enabled>
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</snapshots>
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</pluginRepository>
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</pluginRepositories>
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</project>

‎src/main/java/com/springboot/rest/DemoMain.java‎

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package com.springboot.rest;
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import org.modelmapper.ModelMapper;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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import org.springframework.context.annotation.Bean;
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@SpringBootApplication
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public class DemoMain {
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public static void main(String[] args) {
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SpringApplication.run(DemoMain.class, args);
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}
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@Bean
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public ModelMapper modelMapper() {
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return new ModelMapper();
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}
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}

‎src/main/java/com/springboot/rest/controller/UserController.java‎

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package com.springboot.rest.controller;
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import java.util.List;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.http.MediaType;
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import org.springframework.web.bind.annotation.GetMapping;
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import org.springframework.web.bind.annotation.PathVariable;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RestController;
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import com.springboot.rest.dto.UserDto;
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import com.springboot.rest.service.UserService;
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@RestController
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@RequestMapping(value = "/userinfo")
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public class UserController {
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@Autowired
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private UserService userService;
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private static final Logger LOGGER = LoggerFactory.getLogger(UserController.class);
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// get all userinfo
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@GetMapping(value = "/alluser", produces = MediaType.APPLICATION_JSON_VALUE)
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public List<UserDto> getUserinfo() {
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LOGGER.info("inside class!!!! UserController, method!!!: getUserinfo");
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return userService.getAllUserInfo();
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}
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// get user info by id
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@GetMapping(value = "/{userId}", produces = MediaType.APPLICATION_JSON_VALUE)
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public UserDto getUserById(@PathVariable("userId") String userId) {
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LOGGER.info("inside method!!!: getUserById", userId);
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return userService.getUserByUserId(userId);
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}
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}
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‎src/main/java/com/springboot/rest/dto/UserDto.java‎

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package com.springboot.rest.dto;
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import com.fasterxml.jackson.annotation.JsonProperty;
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public class UserDto {
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//@JsonIgnore if you don't want to show in response.
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@JsonProperty(value="userId")
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private String userId=null;
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@JsonProperty(value="userName")
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private String userName=null;
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public String getUserId() {
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return userId;
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}
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public void setUserId(String userId) {
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this.userId = userId;
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}
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public String getUserName() {
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return userName;
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}
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public void setUserName(String userName) {
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this.userName = userName;
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}
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}

‎src/main/java/com/springboot/rest/entity/User.java‎

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package com.springboot.rest.entity;
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import javax.persistence.Column;
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import javax.persistence.Entity;
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import javax.persistence.Id;
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@Entity
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//@Table(name = "user_table")
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public class User {
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@Id
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@Column
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private String userId;
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@Column
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private String userName;
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public User() {
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}
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public User(String userId, String userName) {
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super();
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this.userId = userId;
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this.userName = userName;
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}
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public String getUserId() {
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return userId;
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}
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public void setUserId(String userId) {
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this.userId = userId;
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}
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public String getUserName() {
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return userName;
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}
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public void setUserName(String userName) {
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this.userName = userName;
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}
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}
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‎src/main/java/com/springboot/rest/repository/UserRepository.java‎

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package com.springboot.rest.repository;
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import org.springframework.data.jpa.repository.JpaRepository;
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import com.springboot.rest.entity.User;
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public interface UserRepository extends JpaRepository<User, String>{
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public User findByUserId(String userId);
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}

‎src/main/java/com/springboot/rest/service/ConverterService.java‎

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package com.springboot.rest.service;
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import org.modelmapper.ModelMapper;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Component;
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import com.springboot.rest.dto.UserDto;
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import com.springboot.rest.entity.User;
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@Component
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public class ConverterService {
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@Autowired
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private ModelMapper modelMapper;
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public UserDto convertToDto(User userObject) {
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return modelMapper.map(userObject, UserDto.class);
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}
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}

‎src/main/java/com/springboot/rest/service/UserService.java‎

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package com.springboot.rest.service;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.stream.Collectors;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Service;
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import com.springboot.rest.controller.UserController;
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import com.springboot.rest.dto.UserDto;
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import com.springboot.rest.entity.User;
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import com.springboot.rest.repository.UserRepository;
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@Service
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public class UserService {
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@Autowired
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private UserRepository userRepository;
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@Autowired
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private ConverterService converterService;
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private static final Logger LOGGER = LoggerFactory.getLogger(UserService.class);
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public List<UserDto> getAllUserInfo() {
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LOGGER.info("inside class!!!! UserService, method!!!: getAllUserInfo");
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List<User> userList = new ArrayList<>();
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User userObj1 = new User("111", "First Demo");
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User userObj2 = new User("222", "Second Demo");
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userList.add(userObj1);
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userList.add(userObj2);
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userRepository.saveAll(userList);
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List<User> userDataList = userRepository.findAll();
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return userDataList.stream().map(converterService::convertToDto).collect(Collectors.toList());
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}
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public UserDto getUserByUserId(String userId) {
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LOGGER.info("method!!!: getUserByUserId", userId);
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User userObj = userRepository.findById(userId).orElse(null);
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return converterService.convertToDto(userObj);
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}
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}
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‎src/main/resources/application.properties‎

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spring.profiles.active=local
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server.port = 9093
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spring.jpa.hibernate.ddl-auto=create-drop
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spring.h2.console.enabled=true
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spring.datasource.url=jdbc:h2:mem:testdb
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spring.datasource.driverClassName=org.h2.Driver
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spring.datasource.username=sa
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spring.datasource.password=password
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spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
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#### Hikari connection pool properties #####
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#Spring Boot 2.0 includes HikariDataSource by default
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#spring.datasource.type = com.zaxxer.hikari.HikariDataSource
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spring.datasource.hikari.connection-timeout=40000
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spring.datasource.hikari.minimum-idle=5
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spring.datasource.hikari.maximum-pool-size=8
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spring.datasource.hikari.idle-timeout=300000
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spring.datasource.hikari.max-lifetime=1200000
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spring.datasource.hikari.auto-commit=false

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