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依赖注入

@Authwired注解​

@Autowired
UserDetailsServiceImpl userDetailsServiceImpl;

setter​

private InventoryMapper inventoryMapper;

public void setInventoryMapper(InventoryMapper inventoryMapper) {
    this.inventoryMapper = inventoryMapper;
}

构造器​

private final InventoryMapper inventoryMapper;

public InventoryController(InventoryMapper inventoryMapper) {
    this.inventoryMapper = inventoryMapper;
}