在 Google Guice 中将构造函数参数传递给工厂

Question

我正在尝试将构造函数参数从一个 class 传递到另一个工厂 class:

public class PerPixelImageUpdater implements ImageUpdater {
    private final PixelUpdater pixelUpdater;
    private final BufferedImage image;

    @Inject
    PerPixelImageUpdater(PixelUpdaterFactory pixelUpdaterFactory,
                         @Assisted BufferedImage image){
        this.image = image;
        this.pixelUpdater = pixelUpdaterFactory.create(image);
    }

    //Methods
}

工厂：

public interface ImageUpdaterFactory {
    ImageUpdater create(BufferedImage image);
}

在 Guice 中注册：

install(new FactoryModuleBuilder()
                .implement(ImageUpdater.class, PerPixelImageUpdater.class)
                .build(ImageUpdaterFactory.class));

当我运行这段代码时，我得到一个错误，说实现没有绑定？

1) No implementation for java.awt.image.BufferedImage annotated with @com.google.inject.assistedinject.Assisted(value="") was bound.
while locating java.awt.image.BufferedImage annotated with @com.google.inject.assistedinject.Assisted(value="") for the 2nd parameter of com.infojolt.imageencrypt.PerPixelImageUpdater.(PerPixelImageUpdater.java:16)

我错过了什么？我需要以不同的方式注册工厂吗？

额外的细节：

实际上有两个错误

1) No implementation for java.awt.image.BufferedImage annotated with @com.google.inject.assistedinject.Assisted(value="") was bound.
while locating java.awt.image.BufferedImage annotated with @com.google.inject.assistedinject.Assisted(value="") for the 2nd parameter of com.infojolt.imageencrypt.PerPixelImageUpdater.(PerPixelImageUpdater.java:16) at com.infojolt.imageencrypt.Injection.ImageEncryptModule.configure(ImageEncryptModule.java:25)

2) No implementation for java.awt.image.BufferedImage annotated with @com.google.inject.assistedinject.Assisted(value="") was bound.
while locating java.awt.image.BufferedImage annotated with @com.google.inject.assistedinject.Assisted(value="") for the 3rd parameter of com.infojolt.imageencrypt.SimplePixelUpdater.(SimplePixelUpdater.java:17) at com.infojolt.imageencrypt.Injection.ImageEncryptModule.configure(ImageEncryptModule.java:18)

在PixelShiftImageEncrypter中，ImageUpdaterFactory imageUpdaterFactory传入构造函数：

@Inject
PixelShiftImageEncrypter(PixelShiftCalculator pixelShiftCalculator,
                                ImageLoader imageLoader,
                                StringEncryption stringEncryption,
                                PixelModificationCalculator pixelModificationCalculator,
                                PixelSkipCountCalculator pixelSkipCountCalculator,
                                ImageUpdaterFactory imageUpdaterFactory)

（我目前正在重构这个项目以减少构造函数参数/方法参数的数量，但我试图在将其拆开之前让 classed 处于测试状态。）

ImageUpdater 然后通过调用以下方法在方法中创建：

ImageUpdater imageUpdater = imageUpdaterFactory.create(image);

PixelShiftImageEncrypter 创建于：

@Inject
EncryptJobConfiguration(@Assisted("inputString") String inputString,
                        @Assisted("secretKey") String secretKey,
                        @Assisted("inputImagePath") String inputImagePath,
                        ImageEncrypter imageEncrypter,
                        ImageStorage imageStorage)

ImageEncryptModule.java 包含：

install(new FactoryModuleBuilder()
            .implement(JobConfiguration.class, Names.named("encrypt"), EncryptJobConfiguration.class)
            .implement(JobConfiguration.class, Names.named("decrypt"), DecryptJobConfiguration.class)
            .build(JobConfigurationFactory.class));

    install(new FactoryModuleBuilder()
            .implement(PixelUpdater.class, SimplePixelUpdater.class)
            .build(PixelUpdaterFactory.class));

    install(new FactoryModuleBuilder()
            .implement(ImageUpdater.class, PerPixelImageUpdater.class)
            .build(ImageUpdaterFactory.class));

PixelUpdaterFactory:

public interface PixelUpdaterFactory {
    PixelUpdater create(BufferedImage image);
}

JobConfigurationFactory:

public interface JobConfigurationFactory {
    @Named("encrypt")
    JobConfiguration createEncrypt(@Assisted("inputString") String inputString,
                                   @Assisted("secretKey") String secretKey,
                                   @Assisted("inputImagePath") String inputImagePath);

    @Named("decrypt")
    JobConfiguration createDecrypt(@Assisted("secretKey") String secretKey,
                                   @Assisted("inputImagePath") String inputImagePath);
}

此文件还包含我为简洁起见排除的所有其他绑定。例如：

bind(ImageEncrypter.class).to(PixelShiftImageEncrypter.class);

Answer 1

问题是我以为我已经替换了：

bind(ImageUpdater.class).to(PerPixelImageUpdater.class);

与：

install(new FactoryModuleBuilder()
                .implement(ImageUpdater.class, PerPixelImageUpdater.class)
                .build(ImageUpdaterFactory.class));

但是，原来的绑定并没有被移除。删除这两行解决了问题：

bind(ImageUpdater.class).to(PerPixelImageUpdater.class);
bind(PixelUpdater.class).to(SimplePixelUpdater.class);

在 Google Guice 中将构造函数参数传递给工厂

Pass constructor parameter into factory in Google Guice

java

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