我正在尋找將數據從其中一箇舊數據庫遷移到Liferay表之一。我可以編寫遷移腳本，但我想知道是否會出現與Liferay的「Counter」服務有關的問題。Liferay將數據從一些舊數據庫遷移到Liferay表中
例如我有遺留的自定義用戶表。我需要將此表中的用戶移到Liferay的User_表中。我可以使用sql腳本來移動數據。我想知道主鍵發生了什麼。據我所知，Liferay已經提供了創建主鍵和跟蹤當前ID的服務。
所以，雖然遷移有什麼，我需要這樣做，計數器不會在遷移後混亂。
還有更多的問題不只是櫃檯。您應該嚴格使用使用Liferay的API來導入內容。
我能名幾個潛在問題的關注，但是這可能會錯過一些更多的 - 但它會成爲你（或其他人讀這個答案）相信，他們現在可以應付所有的問題。你不能。不要去那裏。只需使用API，它將負責更新所有必需的依賴關係。另外，該API明確了您還需要與導入的數據一起使用的其他數據。
任何描述更多細節的人都會爲你設置災難。我們已經看到，在人工寫入數據庫6個月後發現災難的人員（在特殊情況下會遇到重複的主鍵，例如您提到的計數器）。如果您已經忘記了您（或其他人）手動寫入數據庫，那麼任何可能的失敗都可能導致您的門戶從一秒鐘到另一秒失效。
通過調用REST端點（通過{MODEL_NAME} ServiceImpl.java定義），您可以使用Pentaho數據集成從舊數據庫中遷移數據，該端點返回要插入數據的實體的計數器增量。您只需要尊重每個使用新ID的實體使用相同的計數器。
你可以從傳統用戶的列表循環，也使用這個類來創建Liferay的用戶：
package com.yourcompany.yourapp.util;
import java.util.Date;
import java.util.List;
import org.apache.log4j.Logger;
import com.liferay.counter.service.CounterLocalServiceUtil;
import com.liferay.portal.kernel.dao.orm.DynamicQuery;
import com.liferay.portal.kernel.dao.orm.DynamicQueryFactoryUtil;
import com.liferay.portal.kernel.dao.orm.OrderFactoryUtil;
import com.liferay.portal.kernel.dao.orm.PropertyFactoryUtil;
import com.liferay.portal.kernel.exception.PortalException;
import com.liferay.portal.kernel.exception.SystemException;
import com.liferay.portal.kernel.uuid.PortalUUIDUtil;
import com.liferay.portal.kernel.workflow.WorkflowConstants;
import com.liferay.portal.model.Account;
import com.liferay.portal.model.ClassName;
import com.liferay.portal.model.Company;
import com.liferay.portal.model.Contact;
import com.liferay.portal.model.Group;
import com.liferay.portal.model.LayoutSet;
import com.liferay.portal.model.User;
import com.liferay.portal.security.permission.PermissionChecker;
import com.liferay.portal.security.permission.PermissionCheckerFactoryUtil;
import com.liferay.portal.security.permission.PermissionThreadLocal;
import com.liferay.portal.service.AccountLocalServiceUtil;
import com.liferay.portal.service.ClassNameLocalServiceUtil;
import com.liferay.portal.service.CompanyLocalServiceUtil;
import com.liferay.portal.service.ContactLocalServiceUtil;
import com.liferay.portal.service.GroupLocalServiceUtil;
import com.liferay.portal.service.LayoutSetLocalServiceUtil;
import com.liferay.portal.service.RoleLocalServiceUtil;
import com.liferay.portal.service.UserLocalServiceUtil;
import com.liferay.portlet.asset.model.AssetEntry;
import com.liferay.portlet.asset.service.AssetEntryLocalServiceUtil;
public class UserUtil {
private static final Logger logger = Logger.getLogger(UserUtil.class);
private long companyId;
private long creatorUserId;
private long accountId;
private Date date;
public UserUtil() {
try {
DynamicQuery queryCompany = DynamicQueryFactoryUtil.forClass(Company.class)
.addOrder(OrderFactoryUtil.asc("companyId"));
List<Company> listCompany = (List<Company>) CompanyLocalServiceUtil.dynamicQuery(queryCompany, 0, 1);
companyId = listCompany.get(0).getCompanyId();
//-----------
DynamicQuery queryAccount = DynamicQueryFactoryUtil.forClass(Account.class)
.addOrder(OrderFactoryUtil.asc("accountId"));
List<Account> listAccount = (List<Account>) AccountLocalServiceUtil.dynamicQuery(queryAccount, 0, 1);
accountId = listAccount.get(0).getAccountId();
//-----------
DynamicQuery queryUser = DynamicQueryFactoryUtil.forClass(User.class)
.add(PropertyFactoryUtil.forName("defaultUser").eq(false))
.addOrder(OrderFactoryUtil.asc("createDate"));
List<User> listUser = (List<User>) UserLocalServiceUtil.dynamicQuery(queryUser, 0, 1);
creatorUserId = listUser.get(0).getUserId();
date = new Date();
} catch (SystemException ex) {
logger.error(ex.getMessage());
}
}
public void create(String screenName, String emailAddress, String hashedPassword, String fullName) {
try {
long contactId = CounterLocalServiceUtil.increment();//or use Contact.class.getName() as param
Contact contact = ContactLocalServiceUtil.createContact(contactId);
contact.setAccountId(accountId);
//contact.setBirthday(DateUtil.getDate("dd MM yyyy", "01 11 1986"));
contact.setCachedModel(true);
contact.setCompanyId(companyId);
contact.setCreateDate(date);
contact.setEmailAddress(emailAddress);
//contact.setEmployeeNumber(employeeNumber);
//contact.setEmployeeStatusId(employeeStatusId);
contact.setFirstName(fullName);
contact.setMale(true);
contact.setNew(true);
//contact.setUserId(creatorUserId);
User creatorUser = UserLocalServiceUtil.getUserById(creatorUserId);
contact.setUserName(creatorUser.getFullName());
contact.setUserUuid(creatorUser.getUuid());
ContactLocalServiceUtil.addContact(contact);
//----------------------
long userId = CounterLocalServiceUtil.increment();//or use User.class.getName() as param
//----------------------
User user = UserLocalServiceUtil.createUser(userId);
user.setAgreedToTermsOfUse(true);
user.setCachedModel(true);
user.setCompanyId(companyId);
user.setContactId(contactId);
user.setCreateDate(date);
user.setDefaultUser(false);
user.setDigest(null);
user.setEmailAddress(emailAddress);
user.setEmailAddressVerified(true);
user.setFirstName(fullName);
user.setGreeting("Hi " + user.getFirstName());
user.setLanguageId("en_US");
user.setModifiedDate(date);
user.setNew(true);
user.setPassword(hashedPassword);
user.setPasswordEncrypted(true);
user.setPasswordReset(false);
//user.setPasswordUnencrypted();
user.setScreenName(screenName);
user.setStatus(WorkflowConstants.STATUS_APPROVED);
user.setTimeZoneId("UTC+7");
user.setUserUuid(creatorUser.getUuid());
user.setUuid(PortalUUIDUtil.generate());
UserLocalServiceUtil.addUser(user);
//----------------------
try {
// to avoid "PermissionChecker not Initialized"
PermissionChecker checker = PermissionCheckerFactoryUtil.create(creatorUser);
PermissionThreadLocal.setPermissionChecker(checker);
} catch (Exception e) {
logger.error(e.getMessage(), e);
}
//----------------------
ClassName clsNameUser = ClassNameLocalServiceUtil.getClassName(Constants.USER_CLASS);
long classNameId = clsNameUser.getClassNameId();
long groupId = CounterLocalServiceUtil.increment();// or use Group.class.getName() as param
Group group = GroupLocalServiceUtil.createGroup(groupId);
group.setActive(true);
group.setCachedModel(true);
group.setClassNameId(classNameId);
group.setClassPK(userId);
group.setCompanyId(companyId);
group.setCreatorUserId(creatorUser.getUserId());
group.setCreatorUserUuid(creatorUser.getUuid());
group.setFriendlyURL(String.valueOf(userId));
group.setName(String.valueOf(userId));
group.setNew(true);
group.setSite(false);
group.setTreePath("/" + groupId + "/");
group.setType(0);
group.setUuid(PortalUUIDUtil.generate());
GroupLocalServiceUtil.addGroup(group);
//-----------------------------
long layoutSetId1 = CounterLocalServiceUtil.increment();//or use LayoutSet.class.getName() as param
LayoutSet layoutSet1 = LayoutSetLocalServiceUtil.createLayoutSet(layoutSetId1);
layoutSet1.setCachedModel(true);
//layoutSet.setColorSchemeId(colorSchemeId);
layoutSet1.setCompanyId(companyId);
layoutSet1.setCreateDate(date);
//layoutSet.setCss(css);
layoutSet1.setGroupId(groupId);
//layoutSet.setLogo(logo);
//layoutSet.setLogoId(logoId);
layoutSet1.setModifiedDate(date);
layoutSet1.setNew(true);
layoutSet1.setPrivateLayout(true);
//layoutSet.setThemeId(themeId);
LayoutSetLocalServiceUtil.addLayoutSet(layoutSet1);
//-----------------------------
long layoutSetId2 = CounterLocalServiceUtil.increment();// or use LayoutSet.class.getName() as param
LayoutSet layoutSet2 = LayoutSetLocalServiceUtil.getLayoutSet(layoutSetId1);
layoutSet2.setLayoutSetId(layoutSetId2);
layoutSet2.setPrivateLayout(false);
LayoutSetLocalServiceUtil.addLayoutSet(layoutSet2);
//-----------------------------
long assetEntryId = CounterLocalServiceUtil.increment();//or use AssetEntry.class.getName() as param
AssetEntry assetEntry = AssetEntryLocalServiceUtil.createAssetEntry(assetEntryId);
assetEntry.setCompanyId(companyId);
assetEntry.setClassPK(userId);
assetEntry.setGroupId(groupId);
assetEntry.setClassNameId(classNameId);
//ae.setTitle(title);
assetEntry.setUserId(userId);
AssetEntryLocalServiceUtil.addAssetEntry(assetEntry);
//--------------------------------------------------
//long orgAdminRoleId = RoleLocalServiceUtil.getRole(companyId, Constants.ORG_ADMIN_ROLE_NAME).getRoleId();
//UserGroupRoleLocalServiceUtil.addUserGroupRoles(userId, groupId, new long[] { orgAdminRoleId });
long orgUserRoleId = RoleLocalServiceUtil.getRole(companyId, Constants.ORG_USER_ROLE_NAME).getRoleId();
RoleLocalServiceUtil.addUserRole(userId, orgUserRoleId);
long siteMemberRoleId = RoleLocalServiceUtil.getRole(companyId, Constants.SITE_MEMBER_ROLE_NAME).getRoleId();
RoleLocalServiceUtil.addUserRole(userId, siteMemberRoleId);
//-----------------------------------------------------------
} catch (SystemException | PortalException ex) {
logger.error(ex.getMessage(), ex);
}
}
}
，那麼你可以創建UserUtil和呼叫方法create()舊版的用戶列表中環內新實例，是這樣的：
UserUtil userUtil = new UserUtil();
for (LegacyUser user : listOfLegacyUser) {
userUtil.create(........);
}
注意hashedPassword取決於你的哈希方法，在portal-ext.properties定義，默認值是： passwords.ecnryption.algorithm=PBKDF2WithHmacSHA1/160/128000 但您可以使用以下值之一：
passwords.encryption.algorithm=BCRYPT/10
passwords.encryption.algorithm=MD2
passwords.encryption.algorithm=MD5
passwords.encryption.algorithm=NONE
passwords.encryption.algorithm=PBKDF2WithHmacSHA1/160/128000
passwords.encryption.algorithm=SHA
passwords.encryption.algorithm=SHA-256
passwords.encryption.algorithm=SHA-384
passwords.encryption.algorithm=SSHA
passwords.encryption.algorithm=UFC-CRYPT
感謝您的回答。如果有多個表需要更新，你如何建議處理交易。如果我在LocalServiceImpl類中編寫代碼並調用所有其他實體，LocalServiceUtil類將處理事務，或者我應該使用Liferay的BatchSessionUtil –