微信小程序出入库管理系统是一个基于Java的后端服务，用于管理库存数据。以下是一个简单的示例，展示了如何使用Spring Boot和MySQL数据库实现这个系统。
首先，创建一个名为`InventoryManagement`的Java类，用于处理出入库操作：
```java
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Service;
@Service
public class InventoryManagement {
@Autowired
private JdbcTemplate jdbcTemplate;
public void addItem(String itemId, int quantity) {
String sql = "INSERT INTO inventory (item_id, quantity) VALUES (?, ?)";
jdbcTemplate.update(sql, itemId, quantity);
}
public void removeItem(String itemId, int quantity) {
String sql = "DELETE FROM inventory WHERE item_id = ? AND quantity = ?";
jdbcTemplate.update(sql, itemId, quantity);
}
// 其他出入库方法...
}
```
接下来，创建一个名为`InventoryController`的Java类，用于处理前端请求：
```java
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class InventoryController {
@Autowired
private InventoryManagement inventoryManagement;
@PostMapping("/addItem")
public String addItem(@RequestBody AddItemRequest request) {
inventoryManagement.addItem(request.getItemId(), request.getQuantity());
return "Item added successfully";
}
@PostMapping("/removeItem")
public String removeItem(@RequestBody RemoveItemRequest request) {
inventoryManagement.removeItem(request.getItemId(), request.getQuantity());
return "Item removed successfully";
}
// 其他出入库方法...
}
```
最后，创建一个名为`AddItemRequest`和`RemoveItemRequest`的Java类，用于表示前端请求的数据：
```java
public class AddItemRequest {
private String itemId;
private int quantity;
public String getItemId() {
return itemId;
}
public void setItemId(String itemId) {
this.itemId = itemId;
}
public int getQuantity() {
return quantity;
}
public void setQuantity(int quantity) {
this.quantity = quantity;
}
}
public class RemoveItemRequest {
private String itemId;
private int quantity;
public String getItemId() {
return itemId;
}
public void setItemId(String itemId) {
this.itemId = itemId;
}
public int getQuantity() {
return quantity;
}
public void setQuantity(int quantity) {
this.quantity = quantity;
}
}
```
现在，你可以在微信小程序中调用这些接口来实现出入库功能。
