我对 Google Guice 框架有疑问。
我正在尝试创建一个简单的应用程序来注入(inject)对象列表。不幸的是,在尝试运行应用程序时,出现以下错误。
No implementation for java.util.List was bound. while locating java.util.List for field at Operator.carShops(Operator.java:17) while locating Operator ()
程序代码如下:
public class Main {
public static void main(String[] args) {
Injector injector = Guice.createInjector();
Operator operator = injector.getInstance(Operator.class);
operator.prepareData();
}}
public class Operator implements IOperator {
@Inject
private List<CarShop> carShops;
public List<CarShop> getCarShops() {
return carShops; <--- Place of error occurrence
}
public void setCarShop(List<CarShop> carShops) {
this.carShops = carShops;
}
public void prepareData() {
for(CarShop carShop:carShops)
for(int i=0;i<10;i++) {
Car car = new Car();
car.setPrice(1000);
carShop.addCar(car);
}
}}
请帮忙
最佳答案
您的模块注册依赖项似乎丢失了。您需要告诉 Guice 在请求接口(interface)时将使用哪个类。
import com.google.inject.AbstractModule;
public class SimpleModule extends AbstractModule {
@Override
protected void configure() {
bind(CarShop.class).to(CarShopImpl.class);
}
}
其中 CarShopImpl
是 CarShop
接口(interface)的特定实现。
比方说,CarShopImpl
类的开头应该是:
public class CarShopImpl implements CarShop {
// Implementation
}
关于java - Google Guice 配置错误(未绑定(bind)实现),我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/45885031/