基于SSM和Spring Boot框架技术的手机POS前置平台应用
基于SSM和Spring Boot框架技术的手机POS前置平台应用，首先需要创建一个Spring Boot项目，并添加相关依赖。以下是一个简单的pom.xml文件配置：
```xml
<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>
<groupId>com.example</groupId>
<artifactId>mobile-pos</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>mobile-pos</name>
<url>http://maven.apache.org</url>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
```
接下来，创建一个实体类，例如`Order`,用于表示订单信息：
```java
package com.example.mobilepos;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
@Entity
public class Order {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
private String orderNo;
private double amount;
// 其他属性和getter、setter方法省略
}
```
然后，创建一个`OrderRepository`接口，继承`JpaRepository`,用于操作数据库：
```java
package com.example.mobilepos;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;
import com.example.mobilepos.entity.Order;
import java.util.List;
import java.util.Optional;
@Repository
public interface OrderRepository extends JpaRepository<Order, Long> {
Optional<Order> findByOrderNo(String orderNo);
}
```
接下来，创建一个`OrderService`类，用于处理订单相关的业务逻辑：
```java
package com.example.mobilepos;
import com.example.mobilepos.entity.Order;
import com.example.mobilepos.repository.OrderRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.Optional;
import java.util.List;
import java.util.stream.Collectors;
@Service
public class OrderService {
@Autowired
private OrderRepository orderRepository;
public List<Order> getAllOrders() {
return orderRepository.findAll();
}
}
```
然后，创建一个`OrderController`类，用于处理HTTP请求：
```java
package com.example.mobilepos;
import com.example.mobilepos.entity.Order;
import com.example.mobilepos.service.OrderService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;
import static org.springframework.web.bind.annotation.RequestMapping$.method;
@RestController @RequestMapping("/orders") public class OrderController{ @Autowired private OrderService orderService; @GetMapping(method=GET) public List<Order> getAllOrders(){ return orderService().getAllOrders();}} ```
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