我是新来的,我希望你能帮助我们。
我的延迟提取类型有问题。
我不想取得所有的关系,只要我需要。
当我使用CommandLineRunner.run
方法时,它没关系,它正在提取Lazily,但如果我从RestController
调用该方法,它总是急切地 ,但我不希望这样。< / p>
我试过了:
最后,我正在使用SpringUserDetailsService的spring安全性。当我登录时,它返回User对象。
如果@Transactional
注释位于ServiceImpl类上,则它正在提取 eagerly ,但是如果我删除该注释,则它将被提取,但这仅适用于登录。
你有什么想法吗?
存储库:
import hu.pte.clms.model.domain.User;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
import org.springframework.stereotype.Repository;
@Repository
public interface UserRepository extends JpaRepository<User, Long>, JpaSpecificationExecutor{
}
ServiceImpl:
import hu.pte.clms.model.domain.User;
import hu.pte.clms.repository.UserRepository;
import hu.pte.clms.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import java.util.List;
@Service
@Transactional
public class UserServiceImpl implements UserService{
@Autowired
private UserRepository userRepository;
@Override
public List<User> listAll(){
return userRepository.findAll();
}
/* And another methods with this scheme */
控制器:
import hu.pte.clms.model.domain.User;
import hu.pte.clms.model.dto.UserDTO;
import hu.pte.clms.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.web.bind.annotation.*;
import java.util.List;
import java.util.stream.Collectors;
@RestController
@RequestMapping("/api")
public class UserController{
@Autowired
private UserService userService;
@RequestMapping(value = "/user/all", method = RequestMethod.GET)
public ResponseEntity<List<UserDTO>> listAll(){
return new ResponseEntity<>(userService.listAll().stream().map(user ->
new UserDTO(user.getId(), user.getFirstName(), user.getLastName(), user.getCity(), user.getCountry(), user.getBio(), user.getPictureUrl())).collect(Collectors.toList()), HttpStatus.OK);
}
@RequestMapping(value = "/auth/user")
public LoginResult get(){
Authentication auth = SecurityContextHolder.getContext().getAuthentication();
if(!auth.getName().equals("anonymousUser")){
User user = userService.findByUsername(auth.getName());
return new LoginResult(auth.getName(), auth.getAuthorities(), user);
}
return null;
}
}
LoginResult:
import hu.pte.clms.model.domain.User;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;
import java.util.Collection;
import java.util.List;
public class LoginResult implements UserDetails{
private String password;
private String name;
private User user;
private Collection<? extends GrantedAuthority> authorities;
public LoginResult(String name, Collection<? extends GrantedAuthority> authorities, User user){
this.name = name;
this.authorities = authorities;
this.user = user;
}
public LoginResult(String username, String s, boolean b, boolean userNonExpired, boolean credentialsNonExpired, boolean userNonLocked, Collection<? extends GrantedAuthority> authorities){}
public LoginResult(String username, String password, List<GrantedAuthority> grantedAuthorities){
this.name = username;
this.password = password;
this.authorities = grantedAuthorities;
}
用户:
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.annotation.JsonInclude;
import hu.pte.clms.model.domain.relationship.UserSkill;
import javax.persistence.*;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
@Entity
@Table(name = "USER")
@JsonIgnoreProperties(ignoreUnknown = true)
@JsonInclude(value = JsonInclude.Include.NON_NULL)
public class User implements Serializable{
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue
private Long id;
@Column(name = "USERNAME")
private String username;
@Column(name = "PASSWORD")
private String password;
@Column(name = "FIRST_NAME")
private String firstName;
@Column(name = "LAST_NAME")
private String lastName;
@Column(name = "AGE")
private Short age;
@Column(name = "SEX")
private String sex;
@Column(name = "PHONE")
private String phone;
@Column(name = "SKYPE")
private String skype;
@Column(name = "PRIMARY_EMAIL")
private String primaryEmail;
@Column(name = "SECONDARY_EMAIL")
private String secondaryEmail;
@Column(name = "CITY")
private String city;
@Column(name = "COUNTRY")
private String country;
@Column(name = "BIO")
private String bio;
@Column(name = "PICTURE_URL")
private String pictureUrl;
@OneToOne(cascade = CascadeType.ALL)
@JoinColumn(name = "CONFIG_ID")
private Config config;
@JsonIgnore
@ManyToMany
@JoinTable(name = "REL_USER_ROLE", joinColumns = {@JoinColumn(name = "USER_ID")}, inverseJoinColumns = {@JoinColumn(name = "ROLE_ID")})
private List<Role> roles = new ArrayList<>();
@ManyToMany(fetch = FetchType.EAGER)
@JoinTable(name = "REL_USER_SECURITY_ROLE", joinColumns = {@JoinColumn(name = "USER_ID")}, inverseJoinColumns = {@JoinColumn(name = "SECURITY_ROLE_ID")})
private List<SecurityRole> securityRoles = new ArrayList<>();
@ManyToMany(mappedBy = "user")
private List<UserSkill> skills = new ArrayList<>();
@JsonIgnore
@ManyToMany
@JoinTable(name = "REL_USER_PROJECT", joinColumns = {@JoinColumn(name = "USER_ID")}, inverseJoinColumns = {@JoinColumn(name = "PROJECT_ID")})
private List<Project> projects = new ArrayList<>();
@JsonIgnore
@OneToMany(mappedBy = "reviewed", cascade = CascadeType.ALL)
private List<Review> reviews = new ArrayList<>();
/*Getters & setters*/
UserDTO:
import com.fasterxml.jackson.annotation.JsonInclude;
import hu.pte.clms.model.domain.*;
import hu.pte.clms.model.domain.relationship.UserSkill;
import java.util.ArrayList;
import java.util.List;
@JsonInclude(JsonInclude.Include.NON_EMPTY)
public class UserDTO{
private Long id;
private String username;
private String password;
private String firstName;
private String lastName;
private Short age;
private String sex;
private String phone;
private String skype;
private String primaryEmail;
private String secondaryEmail;
private String city;
private String country;
private String bio;
private String pictureUrl;
private Config config;
private List<Role> roles = new ArrayList<>();
private List<SecurityRole> securityRoles = new ArrayList<>();
private List<UserSkill> skills = new ArrayList<>();
private List<Project> projects = new ArrayList<>();
private List<Review> reviews = new ArrayList<>();
public UserDTO(){
}
public UserDTO(User user){
this.id = user.getId();
this.username = user.getUsername();
this.password = user.getPassword();
this.firstName = user.getFirstName();
this.lastName = user.getLastName();
this.age = user.getAge();
this.sex = user.getSex();
this.phone = user.getPhone();
this.skype = user.getSkype();
this.primaryEmail = user.getPrimaryEmail();
this.secondaryEmail = user.getSecondaryEmail();
this.city = user.getCity();
this.country = user.getCountry();
this.bio = user.getBio();
this.pictureUrl = user.getPictureUrl();
this.config = user.getConfig();
this.roles = user.getRoles();
this.securityRoles = user.getSecurityRoles();
this.skills = user.getSkills();
this.projects = user.getProjects();
this.reviews = user.getReviews();
}
public UserDTO(Long id, String firstName, String lastName, String city, String country, String bio, String pictureUrl){
this.id = id;
this.firstName = firstName;
this.lastName = lastName;
this.city = city;
this.country = country;
this.bio = bio;
this.pictureUrl = pictureUrl;
}
/*Getters & setters*/
}
Application.java:
import hu.pte.clms.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class Application implements CommandLineRunner{
@Autowired
private UserService userService;
public static void main(String[] args) {
SpringApplication app = new SpringApplication(Application.class);
app.setShowBanner(false);
app.setRegisterShutdownHook(true);
}
@Override
public void run(String... strings) throws Exception{
userService.listAll();
}
}
的pom.xml:
...
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.2.2.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.4.1</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>${spring.boot.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
<version>${spring.boot.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
<version>${spring.boot.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
<version>${spring.boot.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>4.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.34</version>
</dependency>
</dependencies>
Application.yml:
spring.datasource:
url: jdbc:mysql://localhost:3306/clms?autoReconnect=true
username: clms
password: clms
testOnBorrow: true
validationQuery: SELECT 1
driverClassName: com.mysql.jdbc.Driver
答案 0 :(得分:0)
**抱歉,我不能写评论,所以我在这里写。
我在这里唯一能看到的是服务类中的@Transactional注释,并且需要默认传播。
另外一件事,在杰克逊@JsonIgnoreProperties和@JsonIgnore中并不起作用。最好在@JsonIgnoreProperties中忽略属性(value = {“projects”,“reviews”})
我希望这会有所帮助。
答案 1 :(得分:0)
您应该在数据库中执行映射,而不是在代码中执行。即。
SELECT NEW package.UserDTO(user.id, user.firstName, user.lastName, user.city, user.country, user.bio, user.pictureUrl) FROM User user …
保证在您使用这样的JPQL查询时,只会获取构造函数中的字段。