Wie kann ich eine Verbindung zu einer Datenbank in Spring mithilfe von Konfigurationsdateien herstellen?

Question

Ich habe versucht, eine Verbindung zu einer MySQL-Datenbank mithilfe von Spring MVC herzustellen, aber ich weiß nicht, warum die Datenquelleneigenschaften nicht gespeichert werden. Es gibt mir eine Ausnahme wie Authentifizierung fehlgeschlagen, aber ich habe die Verbindungsdetails in einer Eigenschaftendatei gespeichert.

Dies ist der web.xml:

<?xml version="1.0" encoding="UTF-8"?> 
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" 
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
     xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" 
     version="3.1"> 
    <context-param> 
     <param-name>contextConfigLocation</param-name> 
     <param-value> 
      classpath:main/java/containers/dao-context.xml 
      classpath:main/java/containers/service-context.xml 
     </param-value> 
    </context-param> 


    <listener> 
     <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> 
    </listener> 
    <servlet> 
     <servlet-name>dispatcher</servlet-name> 
     <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 
     <load-on-startup>1</load-on-startup> 
    </servlet> 
    <servlet-mapping> 
     <servlet-name>dispatcher</servlet-name> 
     <url-pattern>/</url-pattern> 
    </servlet-mapping> 


    <resource-ref> 
     <description>MySQL Datasource example</description> 
     <res-ref-name>jdbc/DataSource</res-ref-name> 
     <res-type>javax.sql.DataSource</res-type> 
     <res-auth>Container</res-auth> 
    </resource-ref> 

</web-app> 

Dies ist für meine Konten DAO Kontext, die mit den Konfigurationseigenschaften die Datenquelle Bohne enthält:

<?xml version="1.0" encoding="UTF-8"?> 
<beans xmlns="http://www.springframework.org/schema/beans" 
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
     xmlns:context="http://www.springframework.org/schema/context" 
     xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd 
     http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> 

    <bean id="dataSource" class="org.apache.tomcat.dbcp.dbcp2.BasicDataSource"> 
     <property name="username" value="${username}" /> 
     <property name="password" value="${password}" /> 
     <property name="url" value="${url}" /> 
     <property name="driverClassName" value="${driver}" /> 
    </bean> 

    <context:property-placeholder location="classpath:configuration.properties" /> 
    <context:component-scan base-package="business.users_management" /> 
    <context:annotation-config /> 
</beans> 

dies ist die Konfigurationsdatei:

username = raoul 
password = cefere 
driver = com.mysql.jdbc.Driver 
url = jdbc:mysql://localhost:3306/gamedatabase 

Und schließlich die AccountsDAO-Klasse:

@Component("accounts") 
public class AccountsDAO implements UsersCRUD { 
    private List<Account> accounts; 
    private JdbcTemplate jdbc; 


    @Autowired 
    public void setJdbc(DataSource dataSource) { 
     this.jdbc = new JdbcTemplate(dataSource); 
    } 

    @Override 
    public boolean addAccount(Account account) { 
     BeanPropertySqlParameterSource params = new BeanPropertySqlParameterSource(account); 
     return jdbc.update("INSERT into accounts VALUES (:username, :password,, :email, :name)", params) == 1; 
    } 

    @Override 
    public List<Account> getAllAccounts() { 
     return jdbc.query("SELECT * FROM accounts", (resultSet, i) -> { 
      return createAccount(resultSet); 
     }); 
    } 

} 

Dies sind die Fehler: Es ist wie der Benutzername und das Passwort scheint in die Datenbank für den Anschluss von mysql auf Standard gesetzt ...

INFO: Loading properties file from class path resource [configuration.properties] 
Exception in thread "main" org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Cannot create PoolableConnectionFactory (Access denied for user 'Gustavo'@'localhost' (using password: YES)) 
    at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:80) 
    at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:390) 
    at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:470) 
    at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:480) 
    at business.users_management.AccountsDAO.getAllAccounts(AccountsDAO.java:37) 
    at business.Main.main(Main.java:19) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:498) 
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144) 
Caused by: java.sql.SQLException: Cannot create PoolableConnectionFactory (Access denied for user 'Gustavo'@'localhost' (using password: YES)) 
    at org.apache.tomcat.dbcp.dbcp2.BasicDataSource.createPoolableConnectionFactory(BasicDataSource.java:2151) 
    at org.apache.tomcat.dbcp.dbcp2.BasicDataSource.createDataSource(BasicDataSource.java:1902) 
    at org.apache.tomcat.dbcp.dbcp2.BasicDataSource.getConnection(BasicDataSource.java:1412) 
    at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111) 
    at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77) 
    ... 10 more 
Caused by: java.sql.SQLException: Access denied for user 'Gustavo'@'localhost' (using password: YES) 
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:996) 
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3887) 
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3823) 
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:870) 
    at com.mysql.jdbc.MysqlIO.proceedHandshakeWithPluggableAuthentication(MysqlIO.java:1659) 
    at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1206) 

Answer 1

setzen Bitte die aktuellen Werte in der Config und versuchen jdbc : mysql: // localhost/db useUnicode = true & useJDBCCompliantTimezoneShift = true & Verwendung LegacyDatetimeCode = false & serverTimezone = UTC versuchen diese