WELD-001408：对于具有限定词@Default的Customer类型的不满足的依赖关系

问题描述

我是一个Java EE新手。我想测试JSF，因此做了一个简单的程序，但是不能部署它。我收到以下错误消息：

 不能部署onlineshop-war 
部署失败=部署期间发生错误：异常在加载应用程序时：CDI部署失败：WELD-001408：注入点的限定符@Default 
的不符合依赖关系[BackedAnnotatedField] @Inject private de.java2enterprise.onlineshop.RegisterController.customer 
 at de .java2enterprise.onlineshop.RegisterController.customer（RegisterController.java:0）
。有关详细信息，请参阅server.log。 
  

我的代码如下：
Customer.java：

  package de.java2enterprise.onlineshop.model; 
 
 public class Customer {
 private String email; 
 private String password; 
} 
  

registerController.java：

  package de.java2enterprise.onlineshop; 
 
 import java.io.Serializable; 
 import javax.enterprise.context.RequestScoped; 
 import javax.inject.Named; 
 import javax.inject.Inject; 
 import de.java2enterprise.onlineshop.model。*; 
 
 @Named 
 @RequestScoped 
 public class RegisterController {
 
 private static final long serialVersionUID = 1L; 
 
 @Inject 
私人客户; 
 
 public Customer getCustomer（）{
 return customer; 
} 
 
 public void setCustomer（Customer customer）{
 this.customer = customer; 
} 
 
 public String persist（）{
 return/index.xhtml; 
} 
} 
  

为编译它，我不得不包含cdi-api。 jar作为外部库。任何人谁可以帮助我？谢谢所有提前。

解决方案

您的客户类必须被CDI发现为豆。为此，您有两个选择：

1. 将。由于 @Model 是一个刻板印象，所以它是这样的伎俩。一个限定符，如 @Named 不是定义注释的bean，为什么它不起作用的原因




2. 将您的bean归档中的 bean发现模式从默认的已注释更改为all通过在您的jar中添加一个 beans.xml 文件。

请记住，@Named只有一种用法：将您的bean暴露给UI。其他用途是用于不良做法或与旧版框架兼容。

I'm a Java EE-newbie. I want to test JSF and therefore made a simple program but can not deploy it. I get the following error message:

cannot Deploy onlineshop-war
deploy is failing=Error occurred during deployment: Exception while loading the app : CDI deployment failure:WELD-001408: Unsatisfied dependencies for type Customer with qualifiers @Default
at injection point [BackedAnnotatedField] @Inject private de.java2enterprise.onlineshop.RegisterController.customer
at de.java2enterprise.onlineshop.RegisterController.customer(RegisterController.java:0)
. Please see server.log for more details.

My code is as follows:Customer.java:

package de.java2enterprise.onlineshop.model;

public class Customer {
    private String email;
    private String password;
}

registerController.java:

package de.java2enterprise.onlineshop;

import java.io.Serializable;
import javax.enterprise.context.RequestScoped;
import javax.inject.Named;
import javax.inject.Inject;
import de.java2enterprise.onlineshop.model.*;

@Named
@RequestScoped
public class RegisterController {

    private static final long serialVersionUID = 1L;

    @Inject
    private Customer customer;

    public Customer getCustomer() {
        return customer;
    }

    public void setCustomer(Customer customer) {
        this.customer = customer;
    }

    public String persist() {
        return "/index.xhtml";
    }
}

For compiling it I had to include cdi-api.jar as an external library. Anyone here who could help me? Thank you all in advance.

解决方案

Your Customer class has to be discovered by CDI as a bean. For that you have two options:

1. Put a bean defining annotation on it. As @Model is a stereotype it's why it does the trick. A qualifier like @Named is not a bean defining annotation, reason why it doesn't work

2. Change the bean discovery mode in your bean archive from the default "annotated" to "all" by adding a beans.xml file in your jar.

Keep in mind that @Named has only one usage : expose your bean to the UI. Other usages are for bad practice or compatibility with legacy framework.

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