Idea创建SpringBoot项目整合Hibernate

然后next

依赖包选择，Web必须

pom.xml:

<?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 http://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>2.1.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.macao</groupId>
    <artifactId>springboot</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>springboot</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!--springboot依赖-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>

        <!-- JAP -->
        <dependency>
             <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
        </dependency>

        <!-- 数据库驱动以及数据库连接池-->
        <dependency>
            <groupId>org.mariadb.jdbc</groupId>
            <artifactId>mariadb-java-client</artifactId>
            <version>2.3.0</version>
        </dependency>

        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.5.2</version>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <fork>true</fork>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

笔者使用的数据库为MariaDB（MySql的一个分支）

项目目录结构

application.properties配置：

spring.datasource.url = jdbc:mariadb://localhost:3306/testdb
spring.datasource.username = root
spring.datasource.password = xxx
spring.datasource.driverClassName = org.mariadb.jdbc.Driver
spring.datasource.type=com.mchange.v2.c3p0.ComboPooledDataSource
#Spring Data JPA
spring.jpa.database=MYSQL
spring.jpa.show-sql=true
spring.jpa.hibernate.ddl-auto=update
# Naming strategy
spring.jpa.hibernate.naming-strategy = org.hibernate.cfg.ImprovedNamingStrategy
# stripped before adding them to the entity manager)
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect

#视图层控制
spring.mvc.view.prefix=classpath:/templates/
spring.mvc.view.suffix=.html
spring.mvc.static-path-pattern=/static/**

User.java

@Entity
@Table(name="user")
public class User {

    @Id
    @GeneratedValue
    private int id;

    @Column(name = "name")
    private String name;

    @Column(name = "password")
    private String password;

    public User() {
    }

    public User(int id, String name, String password) {
        this.id = id;
        this.name = name;
        this.password = password;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
}

DAO层UserRepository.java

/**
 * @author DZ
 * // TODO: 2019/3/11
 * */
@Repository
public interface  UserRepositoty extends JpaRepository<User, Long> {

    /**
     * Find by name.
     *
     * @param name the name
     * @return the user
     */
    User findByName(String name);
}

Service层UserService.java

/**
 * @author DZ
 * // TODO: 2019/3/11
 * */

public interface UserService {

    /**
     * Find by name.
     *
     * @param name the name
     * @return the user
     */

    User findByName(String name);
}

实现类UserServiceImpl.java

/**
 * @author DZ
 * // TODO: 2019/3/11
 * */
@Service
public class UserServiceImpl implements UserService {
    @Autowired
    private UserRepositoty userRepositoty;

    @Override
    public User findByName(String name) {
        return userRepositoty.findByName(name);
    }
}

Controller层UserController.java

/**
 * @author DZ
 * // TODO: 2019/3/11
 * */
@RestController
public class UserController {
    @Autowired
    private UserService userService;

    @RequestMapping("/say")
    String home() {
         return "hello world";
    }

   @RequestMapping("/hello/{name}")
    User hello(@PathVariable String name) {
         return userService.findByName(name);
   }
}

SpringBootApplication.java

/**
 * @author DZ
 * // TODO: 2019/3/11
 * */
@SpringBootApplication
@EnableJpaRepositories
@ComponentScan(basePackages = "com.macao.springboot")
public class SpringbootApplication {
    public static void main(String[] args) {
        SpringApplication.run(SpringbootApplication.class, args);

    }
}