Reputation: 101
I has been writing java web-app using the servlets+jsp, JDBC, and tomcat how a servlet container. When I connect to the database and trying to get some data, i given a current exception : enter image description here
Project structure : enter image description here
DataSource code :
public class LibraryDataSource {
private static final Logger LOGGER = Logger.getLogger(LibraryDataSource.class);
private LibraryDataSource() {}
public static DataSource getLibraryDataSource() {
PGSimpleDataSource libraryDatasource = new PGSimpleDataSource();
try(FileReader propertiesReader =
new FileReader("src/main/resources/application.properties")) {
Properties databaseProperties = new Properties();
databaseProperties.load(propertiesReader);
libraryDatasource.setURL(databaseProperties.getProperty("postgresUrl"));
libraryDatasource.setUser(databaseProperties.getProperty("postgresUser"));
libraryDatasource.setPassword(databaseProperties.getProperty("postgresPassword"));
} catch (FileNotFoundException e) {
LOGGER.info("LibraryDataSource::getLibraryDataSource : ", e);
} catch (IOException e) {
LOGGER.info("LibraryDataSource::getLibraryDataSource : ", e);
}
return libraryDatasource;
}
}
BookDAO method where the error detected :
@Override
public List<Book> getAll() {
List<Book> books = new ArrayList<>();
try(Connection connection = dataSource.getConnection()) {
Statement getAllStatement = connection.createStatement();
ResultSet resultSet = getAllStatement.executeQuery("SELECT * FROM Book");
while (resultSet.next()) {
Book book = new Book();
book.setId(resultSet.getLong(1));
book.setTitle(resultSet.getString(2));
book.setYear(resultSet.getInt(3));
book.setQuantity(resultSet.getInt(4));
book.setAuthors(resultSet.getString(5));
books.add(book);
}
} catch (SQLException e) {
e.printStackTrace();
}
return books;
}
Upvotes: 10
Views: 58303
Reputation: 1
I fixed this in my project by add a username and password in application.properties. Before that the setting of spring.datasource.username and spring.datasource.password are empty.
Upvotes: 0
Reputation: 1
I fixed this in my project by changing params in application.properties from spring.datasource to spring.jpa.hibernate, just like that:
spring.jpa.properties.hibernate.connection.url=jdbc:postgresql://localhost:5432/{DB_NAME}
spring.jpa.properties.hibernate.connection.username = {USERNAME}
spring.jpa.properties.hibernate.connection.password = {PASSWORD}
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.PostgreSQLDialect
Upvotes: 0
Reputation: 121
I fixed this in my project by just assigning a password to the database user, in my case 'postgres'
Upvotes: 2
Reputation: 51
spring.datasource.password = your_password
You just have to check if that line of code is active in your application.properties or not commented out. Then you are good to run the project again.
Upvotes: 4
Reputation: 361
I hope it's not too late. I fixed this in my project just assigning a password to the database user, in my case 'postgres'.
ALTER USER "postgres" WITH PASSWORD 'password';
And in your application.properties file you must have something like (I'm using postgreSQL):
spring.datasource.url=jdbc:postgresql://localhost:5432/db_name
spring.datasource.username=postgres
spring.datasource.password=password
spring.jpa.hibernate.ddl-auto=create-drop
spring.jpa.show-sql=true
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.PostgreSQLDialect
spring.jpa.properties.hibernate.format_sql=true
P. D: I'm new in Stack Overflow. I hope I could have helped.
Upvotes: 26