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在我的应用程序的架构之间复制性我一般是从数据访问层，通过服务层，在这些对象将会被从DAO改变了网络层发送对象的对象或列表的最佳方法反对一个对象，反之亦然。 Web层不具有对DAO对象的任何访问权限，并且DAO层不使用DTO。DTO模式：两个对象
为了证明，我平时写的代码为：
@Transactional(readOnly = true)
public List<UserDTO> getAllUserAsUserDTO() {
List<UserDTO> userDTOs = new ArrayList<UserDTO>();
for(User user : getAllUser()) {
userDTOs.add(constructUserDTO(user));
}
return userDTOs;
}
private UserDTO constructUserDTO(User user) {
UserDTO userDTO = new UserDTO();
userDTO.setFullName(user.getFullName());
userDTO.setId(user.getId());
userDTO.setUsername(user.getUsername());
userDTO.setRole(user.getRole());
userDTO.setActive(user.isActive());
userDTO.setActiveText(user.isActive() ? "Active" : "Inactive");
return userDTO;
}
这里的用户是数据库实体：
@javax.persistence.Entity
@Table(name = "USER")
public class User extends Entity {
@Transient
private static final long serialVersionUID = -112950002831333869L;
private String username;
private String fullName;
private boolean active;
private String role;
// other fields
public User() {
super();
}
@NaturalId
@Column(name = "USERNAME", nullable = false)
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
@Column(name = "FULL_NAME")
public String getFullName() {
return fullName;
}
public void setFullName(String fullName) {
this.fullName = fullName;
}
@Column(name = "ACTIVE", nullable = false)
public boolean isActive() {
return active;
}
public void setActive(boolean active) {
this.active = active;
}
@Column(name = "ROLE")
public String getRole() {
return role;
}
public void setRole(String role) {
this.role = role;
}
}
这是UserDTO：
public class UserDTO extends BaseDTO {
private static final long serialVersionUID = -3719463614753533782L;
private String username;
private String fullName;
private String role;
private String activeText;
private Boolean active;
//other properties
public UserDTO() {
super();
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getFullName() {
return fullName;
}
public void setFullName(String fullName) {
this.fullName = fullName;
}
public String getRole() {
return role;
}
public void setRole(String role) {
this.role = role;
}
public String getActiveText() {
return activeText;
}
public void setActiveText(String activeText) {
this.activeText = activeText;
}
public Boolean getActive() {
return active;
}
public void setActive(Boolean active) {
this.active = active;
}
}
所以我想知道这是否是在两个对象之间复制属性的唯一方法。我想我不确定。另外我使用lambdaj，那么在这个API中有一种方法，我可以通过它复制所有这些属性来创建其他对象列表？
本主题可能听起来很主观的，但我真的想从各位专家通过对象从一种形式到另一种的转变可以在最大字段具有相同的字符串进行的方式就知道了。
的可能的复制（https://stackoverflow.com/questions/1432764/any-tool- for-java-object-to-object-mapping） – tkruse 2017-12-12 05:24:44