Question

我的第一个Java EE应用程序出了问题。我使用Wildfly 8.1服务器和Netbeans 我的应用程序由Entity类（SocialUser.java）组成。：

package com.mycompany.entity;

import java.io.Serializable;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;


@Entity
@Table(name = "soc_user")
public class SocialUser implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
private String login;

public Long getId() {
    return id;
}

public void setId(Long id) {
    this.id = id;
}

@Override
public int hashCode() {
    int hash = 0;
    hash += (id != null ? id.hashCode() : 0);
    return hash;
}

@Override
public boolean equals(Object object) {
    // TODO: Warning - this method won't work in the case the id fields are not set
    if (!(object instanceof SocialUser)) {
        return false;
    }
    SocialUser other = (SocialUser) object;
    if ((this.id == null && other.id != null) || (this.id != null &&    !this.id.equals(other.id))) {
        return false;
    }
    return true;
}

@Override
public String toString() {
    return "com.mycompany.entity.NewEntity[ id=" + id + " ]";
}

/**
 * @return the login
 */
public String getLogin() {
    return login;
}

/**
 * @param login the login to set
 */
public void setLogin(String login) {
    this.login = login;
}

}

Contrroller类（UserMB.java）：

package com.mycompany;

import com.mycompany.service.CRUD;
import javax.inject.Named;
import javax.enterprise.context.RequestScoped;
import javax.inject.Inject;


@Named
@RequestScoped
public class UserMB {
@Inject 
private CRUD crud;

private String login;

public UserMB() {

}
public String getLogin() {
    return login;
}

public void setLogin(String login) {
    this.login = login;
}

public void save(){
    crud.businessMethod();
}

}

和CRUD.java类做业务逻辑：

package com.mycompany.service;

import javax.ejb.Stateless;
import javax.ejb.LocalBean;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;


@Stateless
@LocalBean
public class CRUD {

@PersistenceContext(unitName = "SocialPU")
private EntityManager em;

public void businessMethod() {
    em.persist(this);
    System.out.println("zapisano");//this is for checking
}

}

我有这个错误：

Request
{
"address" => [("deployment" => "Praktyki-SocialPage-ear-1.0-SNAPSHOT.ear")],
"operation" => "deploy"
}

Response

Internal Server Error
{
"outcome" => "failed",
"failure-description" => {"JBAS014671: Failed services" =>      {"jboss.deployment.unit.\"Praktyki-SocialPage-ear-1.0-SNAPSHOT.ear\".WeldStartService" =>   "org.jboss.msc.service.StartException in service jboss.deployment.unit.\"Praktyki- SocialPage-ear-1.0-SNAPSHOT.ear\".WeldStartService: Failed to start service
Caused by: org.jboss.weld.exceptions.DeploymentException: WELD-001408: Unsatisfied  dependencies for type CRUD with qualifiers @Default
at injection point [BackedAnnotatedField] @Inject private com.mycompany.UserMB.crud
at com.mycompany.UserMB.crud(UserMB.java:0)
"}},
"rolled-back" => true
}

代码似乎没问题。我在META-INF文件夹中也有beans.xml文件。我试着找到答案，但我找不到符合我案例的答案。你能解释一下我的原因吗？

Answer 1

您的类CRUD是EJB，而您尝试使用CDI注入它（@Inject在EE容器中使用CDI）。将您的代码更改为：

Contrroller类（UserMB.java）：

@Named
@RequestScoped
public class UserMB {

@EJB 
private CRUD crud;

DeploymentException：WELD-001408：带有限定符@Default的类型[]的不满意依赖项

1 个答案: