I have a JPA domain class that is non managed. It is instantiated via the new
operator.
UserAccount account = new UserAccount();
userRepository.save(account)
In my UserAccount
class, I have a beforeSave()
method which is dependent on my SecurityService
to hash encode a password.
My questions is "How do I get spring DI to inject the security service into my entity?". Seems that AspectJ and LoadTimeWeaving is what I need. I've tried an array for configurations, but I can't seem to get any of them to work. I always get a NullPointerException
when trying to call a method on the injected object.
UserAccount.java (This is the JPA Entity)
@Entity
@Repository
@Configurable(autowire = Autowire.BY_TYPE)
public class UserAccount implements Serializable {
@Transient
@Autowired
SecurityService securityService;
private String passwordHash;
@Transient
private String password;
public UserAccount() {
super();
}
@PrePersist
public void beforeSave() {
if (password != null) {
// NullPointerException Here!!!
passwordHash = securityService.hashPassword(password);
}
}
}
Trying to indicate to spring to use AspectJ:
NitroApp.java (The main class)
@SpringBootApplication
@EnableTransactionManagement
@EnableSpringConfigured
@PropertySources(value = {@PropertySource("classpath:application.properties")})
public class NitroApp extends SpringBootServletInitializer {
public static void main (String[] args) {
SpringApplication.run(NitroApp.class);
}
}
build.gradle (Configuration)
buildscript {
repositories {
mavenCentral()
jcenter()
}
dependencies {
classpath "org.springframework.boot:spring-boot-gradle-plugin:1.2.2.RELEASE"
classpath "org.springframework:springloaded:1.2.2.RELEASE"
classpath "org.springframework:spring-aspects:4.1.6.RELEASE"
}
}
apply plugin: 'java'
apply plugin: 'aspectj'
apply plugin: 'application'
apply plugin: 'idea'
apply plugin: 'spring-boot'
repositories {
jcenter()
mavenLocal()
mavenCentral()
}
mainClassName = 'com.noxgroup.nitro.NitroApp'
applicationName = "Nitro"
idea {
module {
inheritOutputDirs = false
outputDir = file("$buildDir/classes/main/")
}
}
dependencies {
compile("org.springframework.boot:spring-boot-starter-web")
compile("org.springframework.boot:spring-boot-starter-thymeleaf")
compile("org.springframework.boot:spring-boot-starter-actuator")
compile("org.springframework.boot:spring-boot-starter-data-jpa")
compile("net.sourceforge.nekohtml:nekohtml:1.9.15")
compile("commons-codec:commons-codec:1.9")
compile("org.postgresql:postgresql:9.4-1201-jdbc41")
}
task wrapper(type: Wrapper) {
gradleVersion = '2.3'
}
You can inject Spring applicationContext in the class used to instanciate UserAccount.
Then, create your UserAccount bean this way :
This way, you can inject your required dependencies in the UserAccount class.