Java Rest构造函数继承
问题描述:
我在构造函数中遇到这个问题,我希望能够从供应商类获取supplierName并将其添加到产品中。Java Rest构造函数继承
public class Product {
private long id;
private long barcode;
private String description;
private String zone;
private int quantity;
Supplier supplierName;
public Product(){
}
public Product(long id, long barcode, String description, String zone,
int quantity, Supplier supplierName) {
super();
this.id = id;
this.barcode = barcode;
this.description = description;
this.zone = zone;
this.quantity = quantity;
this.supplierName = supplierName;
}
但是,当我到达我的产品服务类
public class ProductService {
private Map<Long, Product> products = DatabaseClass.getProducts();
public ProductService(){
products.put(1L,new Product(1,1,"Lighter","Gift",5000,"Supplier1"));
products.put(2L,new Product(2,2,"Lighter","Gift",3500,"supplier2"));
}
它给我一个错误的supplier1
& supplier2
问题所在。
任何帮助将appriciated。
答
如果您编辑代码的格式,你可以清楚地看到你试图解析字符串"Supplier1"
和"supplier2"
的构造函数,它接受作为对象类型的Supplier
。
如果你有一个定义的类Supplier
,构造函数调用更改为:
products.put(2L,new Product(2,2, "Lighter","Gift",3500,new Supplier(...)));
或者,如果供应商应该是字符串,改变其声明和构造函数。
private String supplier;
public Product(long id, long barcode, String description, String zone, int quantity, String supplier) { .... }
在所有情况下的结论是:请别格式化! :)
答
你给在"Supplier1"
和Supplier2
字符串,而构造函数需要对象"Supplier"
它给你什么错误? –
如果您可以将您收到的错误添加到您的问题中,它会很有帮助 - 它应该包括发生问题的行号 –
删除与“产品”匹配的论题 – college1