微信小程序出入库管理系统JAVA

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。