我的问题是，我有一个表用户和表组（这个表用于授权用户 - 这意味着当用户属于像管理员这样的组时，他们可以登录到 admincp 而其他用户属于组成员，他们只阅读和写入并且无法登录到admincp）每个用户可能属于许多组并且每个组已经包含许多用户并且它们具有多对多的关系
我使用休眠进行持久存储。和 struts 2 来处理业务逻辑。
当我想从 Struts2 实现登录操作时，如何获取组成员所属的值？与我想知道的价值进行比较？
例子
我从用户名和密码获取用户，然后从用户类获取组，但我不知道如何获取组用户所属的值
这意味着如果用户属于 Groupid 为 1 并且在组表中，在列 adminpermission 为 1，该用户可以登录到 admincp，否则他不能
我的代码：
用户.java
/*
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* and open the template in the editor.
*/
package org.dejavu.software.model;
import java.io.Serializable;
import java.util.Date;
import java.util.HashSet;
import java.util.Set;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.ManyToMany;
import javax.persistence.Table;
import javax.persistence.Temporal;
/**
*
* @author Administrator
*/
@Entity
@Table(name="User")
public class User implements Serializable{
private static final long serialVersionUID = 2575677114183358003L;
private Long userId;
private String username;
private String password;
private String email;
private Date DOB;
private String address;
private String city;
private String country;
private String avatar;
private Set<Group> groups = new HashSet<Group>(0);
@Column(name="dob")
@Temporal(javax.persistence.TemporalType.DATE)
public Date getDOB() {
return DOB;
}
public void setDOB(Date DOB) {
this.DOB = DOB;
}
@Column(name="address")
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
@Column(name="city")
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
@Column(name="country")
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
@Column(name="email")
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
@ManyToMany(fetch = FetchType.LAZY, cascade = CascadeType.ALL)
@JoinTable(name="usergroup",joinColumns={@JoinColumn(name="userid")},inverseJoinColumns={@JoinColumn(
name="groupid")})
public Set<Group> getGroups() {
return groups;
}
public void setGroups(Set<Group> groups) {
this.groups = groups;
}
@Column(name="password")
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
@Id
@GeneratedValue
@Column(name="iduser")
public Long getUserId() {
return userId;
}
public void setUserId(Long userId) {
this.userId = userId;
}
@Column(name="username")
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
@Column(name="avatar")
public String getAvatar() {
return avatar;
}
public void setAvatar(String avatar) {
this.avatar = avatar;
}
}
组.java
/*
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* and open the template in the editor.
*/
package org.dejavu.software.model;
import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;
/**
*
* @author Administrator
*/
@Entity
@Table(name="Group")
public class Group implements Serializable{
private static final long serialVersionUID = -2722005617166945195L;
private Long idgroup;
private String groupname;
private String adminpermission;
private String editpermission;
private String modpermission;
@Column(name="adminpermission")
public String getAdminpermission() {
return adminpermission;
}
public void setAdminpermission(String adminpermission) {
this.adminpermission = adminpermission;
}
@Column(name="editpermission")
public String getEditpermission() {
return editpermission;
}
public void setEditpermission(String editpermission) {
this.editpermission = editpermission;
}
@Column(name="groupname")
public String getGroupname() {
return groupname;
}
public void setGroupname(String groupname) {
this.groupname = groupname;
}
@Id
@GeneratedValue
@Column (name="idgroup")
public Long getIdgroup() {
return idgroup;
}
public void setIdgroup(Long idgroup) {
this.idgroup = idgroup;
}
@Column(name="modpermission")
public String getModpermission() {
return modpermission;
}
public void setModpermission(String modpermission) {
this.modpermission = modpermission;
}
}
用户DAO
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* and open the template in the editor.
*/
package org.dejavu.software.dao;
import java.util.List;
import org.dejavu.software.model.User;
import org.dejavu.software.util.HibernateUtil;
import org.hibernate.Query;
import org.hibernate.Session;
/**
*
* @author Administrator
*/
public class UserDAO extends HibernateUtil{
public User addUser(User user){
Session session = HibernateUtil.getSessionFactory().getCurrentSession();
session.beginTransaction();
session.save(user);
session.getTransaction().commit();
return user;
}
public List<User> getAllUser(){
Session session = HibernateUtil.getSessionFactory().getCurrentSession();
session.beginTransaction();
List<User> user = null;
try {
user = session.createQuery("from User").list();
} catch (Exception e) {
e.printStackTrace();
session.getTransaction().rollback();
}
session.getTransaction().commit();
return user;
}
public User checkUsernamePassword(String username, String password){
Session session = HibernateUtil.getSessionFactory().getCurrentSession();
session.beginTransaction();
User user = null;
try {
Query query = session.createQuery("from User where username = :name and password = :password");
query.setString("username", username);
query.setString("password", password);
user = (User) query.uniqueResult();
} catch (Exception e) {
e.printStackTrace();
session.getTransaction().rollback();
}
session.getTransaction().commit();
return user;
}
}
AdminLoginAction
/*
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*/
package org.dejavu.software.view;
import com.opensymphony.xwork2.ActionSupport;
import org.dejavu.software.dao.UserDAO;
import org.dejavu.software.model.User;
/**
*
* @author Administrator
*/
public class AdminLoginAction extends ActionSupport{
private User user;
private String username,password;
private String role;
private UserDAO userDAO;
public AdminLoginAction(){
userDAO = new UserDAO();
}
@Override
public String execute(){
return SUCCESS;
}
@Override
public void validate(){
if(getUsername().length() == 0){
addFieldError("username", "Username is required");
}if(getPassword().length()==0){
addFieldError("password", getText("Password is required"));
}
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getRole() {
return role;
}
public void setRole(String role) {
this.role = role;
}
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
}
其他问题。我看到了一些关于登录的例子，我看到一些开发人员使用拦截器，我不明白他们为什么要使用它，以及“拦截器”会给我们带来什么好处。
非常感谢！
编辑堆栈跟踪
Hibernate: select user0_.iduser as iduser3_0_, group2_.idgroup as idgroup4_1_, user0_.dob as dob3_0_, user0_.address as address3_0_, user0_.avatar as avatar3_0_, user0_.city as city3_0_, user0_.country as country3_0_, user0_.email as email3_0_, user0_.password as password3_0_, user0_.username as username3_0_, group2_.adminpermission as adminper2_4_1_, group2_.editpermission as editperm3_4_1_, group2_.groupname as groupname4_1_, group2_.modpermission as modpermi5_4_1_, groups1_.iduser as iduser0__, groups1_.idgroup as idgroup0__ from User user0_ inner join usergroup groups1_ on user0_.iduser=groups1_.iduser inner join Group group2_ on groups1_.idgroup=group2_.idgroup where user0_.username=?
Oct 28, 2012 12:16:49 PM org.hibernate.util.JDBCExceptionReporter logExceptions
WARNING: SQL Error: 1064, SQLState: 42000
Oct 28, 2012 12:16:49 PM org.hibernate.util.JDBCExceptionReporter logExceptions
SEVERE: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'Group group2_ on groups1_.idgroup=group2_.idgroup where user0_.username='admin'' at line 1
org.hibernate.exception.SQLGrammarException: could not execute query
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:67)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
at org.hibernate.loader.Loader.doList(Loader.java:2223)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104)
at org.hibernate.loader.Loader.list(Loader.java:2099)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:378)
at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:338)
at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
at org.hibernate.impl.AbstractQueryImpl.uniqueResult(AbstractQueryImpl.java:811)
at org.dejavu.software.dao.UserDAO.checkUsernamePassword(UserDAO.java:52)
at org.dejavu.software.view.AdminLoginAction.execute(AdminLoginAction.java:31)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:453)
at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:292)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:255)
at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:176)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265)
at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:236)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:236)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:190)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:90)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:243)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:176)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:192)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:187)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:249)
at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)
at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:511)
at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:432)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:405)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:964)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:515)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:304)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'Group group2_ on groups1_.idgroup=group2_.idgroup where user0_.username='admin'' at line 1
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
at com.mysql.jdbc.Util.getInstance(Util.java:386)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1053)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4096)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4028)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2490)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2651)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2734)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2155)
at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2322)
at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:186)
at org.hibernate.loader.Loader.getResultSet(Loader.java:1787)
at org.hibernate.loader.Loader.doQuery(Loader.java:674)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236)
at org.hibernate.loader.Loader.doList(Loader.java:2220)
... 78 more