I'm creating an app using spring data without spring boot, JPA with postgresql and Vaadin. I'm trying to show the data from SQL table on a Vaadin label.
My problem is that it's null and I think it's a bean creation problem.
Sorry for pasting many lines of code but I don't know where the problem may be.
The main Vaadin UI:
@Theme("valo")
@SpringUI
@SuppressWarnings("serial")
public class MyUI extends UI {
private UserRepository usersRepo;
@Autowired
public MyUI(UserRepository usersRepo){
this.usersRepo = usersRepo;
)};
@Override
protected void init(VaadinRequest request) {
Label label = new Label(usersRepo.findAll().toString());
setContent(label);
}
}
The User class:
@Entity
@Table(name="workers", schema="public")
public class User {
public User( String name, String surname, String username) {
this.name= name;
this.surname= surname;
this.username = username;
}
protected User(){
}
@Id
@Column(name = "userId")
private Long userId;
@Column(name="name")
private String name;
@Column(name="surname")
private String surname;
@Column(name="username")
private String username;
public Long getUserId() {
return userId;
}
public void setUserId(Long userId) {
this.userId = userId;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSurname() {
return surname;
}
public void setSurname(String surname) {
this.surname= surname;
}
public String getNameAndSurname(){
return name+" "+surname;
}
@Override
public String toString() {
return "User [userId=" + userId + ", name=" + name + ", surname=" + surname+ ", username=" + username + "]";
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
}
The user repository:
public interface UserRepository extends JpaRepository<User, Long> {
List<User> findByNameStartsWithIgnoreCase(String imie);
}
Web security config for spring security:
@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(securedEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {
@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.ldapAuthentication().userSearchFilter("(sAMAccountName={0})")
.contextSource(contextSource());
}
@Override
protected void configure(HttpSecurity http) throws Exception {
http
.csrf().disable()
.authorizeRequests().anyRequest().authenticated()
.and()
.formLogin().permitAll()
.and()
.logout().logoutUrl("/logout").logoutSuccessUrl("/login?logged-out").permitAll() // Logout success page is accessible to anybody
.and()
.sessionManagement().sessionFixation().newSession(); // Create completely new session
}
@Override
public void configure(WebSecurity web) throws Exception {
web.ignoring().antMatchers("/css/*");
}
public LdapContextSource contextSource () {
LdapContextSource contextSource= new LdapContextSource();
contextSource.setUrl("ldap://192.168.1.21:3268");
contextSource.setBase("dc=ad,dc=example,dc=com,dc=pl");
contextSource.setUserDn("CN=someGuy,OU=Users,DC=ad,DC=example,DC=com,DC=pl");
contextSource.setPassword("somepassword");
contextSource.setAnonymousReadOnly(false);
contextSource.setPooled(true);
contextSource.afterPropertiesSet();
return contextSource;
}
}
Security Initializer:
public class SecurityWebApplicationInitializer
extends AbstractSecurityWebApplicationInitializer {
}
Web context initializer:
public class WebContextInitializer implements WebApplicationInitializer {
@Override
public void onStartup(javax.servlet.ServletContext servletContext)
throws ServletException {
AnnotationConfigWebApplicationContext context = new AnnotationConfigWebApplicationContext();
context.scan(WebContextInitializer.class.getPackage().getName());
servletContext.addListener(new ContextLoaderListener(context));
registerServlet(servletContext);
}
private void registerServlet(ServletContext servletContext) {
ServletRegistration.Dynamic dispatcher = servletContext.addServlet(
"vaadin", SpringVaadinServlet.class);
dispatcher.setLoadOnStartup(1);
dispatcher.addMapping("/*");
}
}
Configuration:
@Configuration
@EnableVaadin
public class MyConfiguration {
@Bean
@Autowired
public UserRepository userRepo(){
return new UserRepository(){
@Override
public void deleteAllInBatch() {
// TODO Auto-generated method stub
}
@Override
public void deleteInBatch(Iterable<User> arg0) {
// TODO Auto-generated method stub
}
@Override
public List<User> findAll() {
// TODO Auto-generated method stub
return null;
}
@Override
public List<User> findAll(Sort arg0) {
// TODO Auto-generated method stub
return null;
}
@Override
public List<User> findAll(Iterable<Long> arg0) {
// TODO Auto-generated method stub
return null;
}
@Override
public <S extends User> List<S> findAll(Example<S> arg0) {
// TODO Auto-generated method stub
return null;
}
@Override
public <S extends User> List<S> findAll(Example<S> arg0, Sort arg1) {
// TODO Auto-generated method stub
return null;
}
@Override
public void flush() {
// TODO Auto-generated method stub
}
@Override
public User getOne(Long arg0) {
// TODO Auto-generated method stub
return null;
}
@Override
public <S extends User> List<S> save(Iterable<S> arg0) {
// TODO Auto-generated method stub
return null;
}
@Override
public <S extends User> S saveAndFlush(S arg0) {
// TODO Auto-generated method stub
return null;
}
@Override
public Page<User> findAll(Pageable arg0) {
// TODO Auto-generated method stub
return null;
}
@Override
public long count() {
// TODO Auto-generated method stub
return 0;
}
@Override
public void delete(Long arg0) {
// TODO Auto-generated method stub
}
@Override
public void delete(User arg0) {
// TODO Auto-generated method stub
}
@Override
public void delete(Iterable<? extends User> arg0) {
// TODO Auto-generated method stub
}
@Override
public void deleteAll() {
// TODO Auto-generated method stub
}
@Override
public boolean exists(Long arg0) {
// TODO Auto-generated method stub
return false;
}
@Override
public User findOne(Long arg0) {
// TODO Auto-generated method stub
return null;
}
@Override
public <S extends User> S save(S arg0) {
// TODO Auto-generated method stub
return null;
}
@Override
public <S extends User> long count(Example<S> arg0) {
// TODO Auto-generated method stub
return 0;
}
@Override
public <S extends User> boolean exists(Example<S> arg0) {
// TODO Auto-generated method stub
return false;
}
@Override
public <S extends User> Page<S> findAll(Example<S> arg0, Pageable arg1) {
// TODO Auto-generated method stub
return null;
}
@Override
public <S extends User> S findOne(Example<S> arg0) {
// TODO Auto-generated method stub
return null;
}
@Override
public List<User> findByImieStartsWithIgnoreCase(String imie) {
// TODO Auto-generated method stub
return null;
}
};
}
@WebServlet(value = "/*", asyncSupported = true)
public static class Servlet extends SpringVaadinServlet {
}
}
And finally pom.xml:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>pl.com.example</groupId>
<artifactId>SpringSecurityVaadin</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>SpringSecurityVaadin</name>
<prerequisites>
<maven>3</maven>
</prerequisites>
<properties>
<vaadin.version>8.0.6</vaadin.version>
<vaadin.plugin.version>8.0.6</vaadin.plugin.version>
<jetty.plugin.version>9.3.9.v20160517</jetty.plugin.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<vaadin.widgetset.mode>local</vaadin.widgetset.mode>
<jdk.version>1.6</jdk.version>
<spring.version>4.3.9.RELEASE</spring.version>
<spring.security.version>4.2.3.RELEASE</spring.security.version>
<jstl.version>1.2</jstl.version>
</properties>
<repositories>
<repository>
<id>vaadin-addons</id>
<url>http://maven.vaadin.com/vaadin-addons</url>
</repository>
</repositories>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-bom</artifactId>
<version>${vaadin.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- Spring Security -->
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-web</artifactId>
<version>${spring.security.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-config</artifactId>
<version>${spring.security.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-server</artifactId>
</dependency>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-push</artifactId>
</dependency>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-client-compiled</artifactId>
</dependency>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-themes</artifactId>
</dependency>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-spring</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.9.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-ldap</artifactId>
<version>4.2.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>42.1.1</version>
</dependency>
<dependency>
<groupId>org.eclipse.persistence</groupId>
<artifactId>javax.persistence</artifactId>
<version>2.1.1</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>1.11.4.RELEASE</version>
</dependency>
<dependency>
<groupId>javax.inject</groupId>
<artifactId>javax.inject</artifactId>
<version>1</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>3.0.0</version>
<configuration>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
<plugin>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-maven-plugin</artifactId>
<version>${vaadin.plugin.version}</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-clean-plugin</artifactId>
<version>3.0.0</version>
<configuration>
<filesets>
<fileset>
<directory>src/main/webapp/VAADIN/themes</directory>
<includes>
<include>**/styles.css</include>
<include>**/styles.scss.cache</include>
</includes>
</fileset>
</filesets>
</configuration>
</plugin>
<plugin>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-maven-plugin</artifactId>
<version>${jetty.plugin.version}</version>
<configuration>
<scanIntervalSeconds>2</scanIntervalSeconds>
</configuration>
</plugin>
</plugins>
</build>
<profiles>
<profile>
<id>vaadin-prerelease</id>
<activation>
<activeByDefault>false</activeByDefault>
</activation>
<repositories>
<repository>
<id>vaadin-prereleases</id>
<url>http://maven.vaadin.com/vaadin-prereleases</url>
</repository>
<repository>
<id>vaadin-snapshots</id>
<url>https://oss.sonatype.org/content/repositories/vaadin-snapshots/</url>
<releases>
<enabled>false</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>vaadin-prereleases</id>
<url>http://maven.vaadin.com/vaadin-prereleases</url>
</pluginRepository>
<pluginRepository>
<id>vaadin-snapshots</id>
<url>https://oss.sonatype.org/content/repositories/vaadin-snapshots/</url>
<releases>
<enabled>false</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
</profile>
</profiles>
</project>
The result is:
com.example.server.DefaultErrorHandler doDefault SEVERE: java.lang.NullPointerException at pl.com.example.SpringSecurityVaadin.MyUI.init(MyUI.java:47)
Which is this line:
Label label = new Label(usersRepo.findAll().toString());
I have no idea where the problem is, Did I configured beans wrong? or something else?
Greetings, Rafał
