IntelliJ IDEA+SpringBoot创建模拟接口小程序

一、首先，设计好数据库表，并且填上测试数据

二、新建一个Idea程序，使用spring Initialzrxiangdao向导，选择web->web,SQL->jdbc,SQL->MySQL，并且添加gson依赖库
三、配置启动文件Application.Java

@SpringBootApplication
public class Application extends SpringBootServletInitializer {

public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}

@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
return builder.sources(Application.class);
}
}

四、在application.properties文件中配置数据连接信息

#DB Configuration:
spring.datasource.driverClassName = com.mysql.jdbc.Driver
spring.datasource.url = jdbc:mysql://localhost:3306/test
spring.datasource.username = root
spring.datasource.password = root

#JPA Configuration:
spring.jpa.database=MySQL
spring.jpa.show-sql=true
spring.jpa.generate-ddl=true
spring.jpa.hibernate.ddl-auto=update
#spring.jpa.database-platform=org.hibernate.dialect.MySQL5Dialect
spring.jpa.hibernate.naming_strategy=org.hibernate.cfg.ImprovedNamingStrategy
#spring.jpa.database=org.hibernate.dialect.MySQL5InnoDBDialect
#spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MYSQL5Dialect

当然数据连接的配置也可以使用一个经过@Configration注解修饰过的配置文件，二者二选一。

@Configuration
public class DataBaseConfig {
@Bean
public DriverManagerDataSource dataSource(){
DriverManagerDataSource driverManagerDataSource=new DriverManagerDataSource();
driverManagerDataSource.setDriverClassName("com.mysql.jdbc.Driver");
driverManagerDataSource.setUrl("jdbc:mysql://192.168.1.101:3306/test");
driverManagerDataSource.setUsername("root");
driverManagerDataSource.setPassword("root");
return driverManagerDataSource;
}
}

五、建立bean文件夹，建立User.java实体类

@Entity
@Table(name = "user")
public class User {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
public int id;
public String name;
@Column(name = "password")
public String passWord;
}

六、创建UserSqls.java接口文件，几种放置SQL查询语句

public interface UserSqls {
String SQL_GET_USER_LIST_BY_NAME="SELECT * FROM user WHERE name=?";//获取用户列表
String SQL_GET_USER_LIST="SELECT * FROM user";//获取所有用户列表
}

七、创建UserRepository.java接口文件

public interface UserRepository extends CrudRepository<User, Integer> {

User findUserById(int id);

@Query(value = UserSqls.SQL_GET_USER_LIST_BY_NAME, nativeQuery = true)
List<User> getUserListByName(String name);

@Query(value = UserSqls.SQL_GET_USER_LIST, nativeQuery = true)
List<User> getUserList();
}

八、创建UserController.java文件，写几个接口方法

@RestController
public class UserController {
@Autowired
private UserRepository userRepository;

@RequestMapping("/getUserInfo")
public User getUserInfo(int id) {
User user = userRepository.findUserById(id);
return user;
}

@RequestMapping("/getUserListByName")
public List<User> getUserListByName(String name) {
List<User> userList = userRepository.getUserListByName(name);
return userList;
}

@RequestMapping("/getUserList")
public List<User> getUserList() {
List<User> userList = userRepository.getUserList();
return userList;
}

@RequestMapping("/getUserListJson")
public String getUserListJson() {
List<User> userList = userRepository.getUserList();
return new Gson().toJson(userList);
}
}

九、配置Artifacs部署到本地Tomcat服务器（尝试部署到软件内部的Tomcat出错没解决）

十、调用
http://192.168.1.101:8080/myall/getUserList
返回

[{"id":1,"name":"kalychen","passWord":"123456"},{"id":2,"name":"will","passWord":"123456"}]

为APP写模拟几口程序研究，比较肤浅，只图够用。