在許多插入到一個關係

Admins.java

package com.spark.entites; 

import javax.persistence.CascadeType; 
import javax.persistence.Entity; 
import javax.persistence.FetchType; 
import javax.persistence.GeneratedValue; 
import javax.persistence.GenerationType; 
import javax.persistence.Id; 
import javax.persistence.JoinColumn; 
import javax.persistence.ManyToOne; 


import com.fasterxml.jackson.annotation.JsonView; 
import com.spark.View; 

@Entity 
public class Admins { 

@Id 
@GeneratedValue(strategy = GenerationType.AUTO) 
@JsonView(View.all.class) 
private int idu; 
@JsonView(View.all.class) 
private String logins; 
@JsonView(View.all.class) 
private String password; 
@JsonView(View.all.class) 
@ManyToOne(fetch = FetchType.EAGER, cascade = CascadeType.MERGE) 
@JoinColumn(name = "idr") 
private Role role; 

public int getIdu() { 
    return idu; 
} 

public void setIdu(int idu) { 
    this.idu = idu; 
} 

public String getLogins() { 
    return logins; 
} 

public void setLogins(String logins) { 
    this.logins = logins; 
} 

public String getPassword() { 
    return password; 
} 

public void setPassword(String password) { 
    this.password = password; 
} 



public Admins(int idu, String logins, String password, Role role) { 
    super(); 
    this.idu = idu; 
    this.logins = logins; 
    this.password = password; 
    this.role = role; 
} 

public Admins() { 
    super(); 
} 

}

和Role.java

@Entity 
public class Role { 


@Id 
@GeneratedValue(strategy=GenerationType.AUTO) 
@JsonView(View.all.class) 
private int idr ; 
@JsonView(View.all.class) 
private String role ; 
public int getIdr() { 
    return idr; 
} 
public void setIdr(int idr) { 
    this.idr = idr; 
} 
public String getRole() { 
    return role; 
} 
public void setRole(String role) { 
    this.role = role; 
} 
public Role(int idr, String role) { 
    super(); 
    this.idr = idr; 
    this.role = role; 
} 
public Role() { 
    super(); 
}

，你可以看到我有一個manyToOne關係這2 classess，正在使用spring-boot我有這樣的存儲庫：

public interface AdminRepository extends JpaRepository<Admins, Integer>{ 
}

，並在控制器：

@RestController 
public class AdminsController { 

@Autowired 
AdminRepository adminRepository; 

// this one to load R 
@JsonView(View.all.class) 
@RequestMapping(value = "/Admins/load") 
public List<Admins> load() { 
    return adminRepository.findAll(); 
} 

@RequestMapping(value = "/Admins/insert") 
public void insertusers(Admins a) { 
    adminRepository.save(a); 
} 

}

在我的控制器

我有2個功能，一個加載和一個插入當我嘗試插入IDR值是這樣的：

http://localhost:8080/Admins/insert?logins=yosra&password=yossra&role.idr=1

我得到的值

：角色無效

{ 
idu: 23, 
logins: "yosra", 
password: "yossra", 
role: null 
}

這是假設是這樣的

{ 
idu: 3, 
logins: "bassem", 
password: "admin", 
role: { 
idr: 1, 
role: "Admin" 
} 
}

感謝任何幫助。

來源

2016-10-04 Kamel Mili

嘗試在Admins.class添加getter和setter現場role或添加屬性access = AccessType.FIELD到Admins.class註釋@Entity。

來源

2016-10-04 12:55:45 mrserfr

在許多插入到一個關係

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