[Java Spring] Problema connessione Mysql

[fermat]

ciao!

sto creare una connessione tra java spring e mysql.
ho creato un file xml:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="
    http://www.springframework.org/schema/beans     
    http://www.springframework.org/schema/beans/spring-beans-4.0.xsd">

    <bean id="dataSource" 
          class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/spring_test"/>
        <property name="username" value="..."/>
        <property name="password" value="..."/>
    </bean>
    
    <bean id="ricercheTemplate" 
          class="com.mp.imdb.RicercheTemplate">
        <property name="dataSource" ref="dataSource" />    
    </bean>
    
</beans>

il db è attivo (raggiungibile sia trmaite phpmyadmin che tramite console).
però ottengo questo errore (solo l'ultima parte):

java.net.ConnectException: Connessione rifiutata
    java.net.PlainSocketImpl.socketConnect(Native Method)
    java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:345)
    java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
    java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
    java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
    java.net.Socket.connect(Socket.java:589)
    java.net.Socket.connect(Socket.java:538)
    java.net.Socket.<init>(Socket.java:434)
    java.net.Socket.<init>(Socket.java:244)
    com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:259)
    com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:305)
    com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2461)
    com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2498)
    com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2283)
    com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:822)
    com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
    sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    java.lang.reflect.Constructor.newInstance(Constructor.java:408)
    com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
    com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:404)
    com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:317)
    java.sql.DriverManager.getConnection(DriverManager.java:664)
    java.sql.DriverManager.getConnection(DriverManager.java:208)
    org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriverManager(DriverManagerDataSource.java:153)
    org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriver(DriverManagerDataSource.java:144)
    org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnectionFromDriver(AbstractDriverBasedDataSource.java:155)
    org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnection(AbstractDriverBasedDataSource.java:120)
    org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111)
    org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77)
    org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:628)
    org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:907)
    org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:968)
    org.springframework.jdbc.core.JdbcTemplate.update(JdbcTemplate.java:978)
    com.mp.imdb.RicercheTemplate.create(RicercheTemplate.java:21)
    com.mp.imdb.HomeController.test(HomeController.java:57)
    com.mp.imdb.HomeController.home(HomeController.java:24)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    java.lang.reflect.Method.invoke(Method.java:483)
    org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:175)
    org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:446)
    org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:434)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:945)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:876)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:618)
    org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

avete qualche idea??

[fermat]

vi riporto anche il primo pezzo dell'errore:

type Exception report
message Request  processing failed; nested exception is  org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get  JDBC Connection; nested exception is  com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications  link failure
description The server encountered an internal error that prevented it from fulfilling this request.
exception
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
	org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:973)
	org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:618)
	org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

sinceramente non so più dove guardare

[fermat]

alla fine ho scoperto che c'era un problema di permessi.
nel senso che ho resettato i permessi sul db e adesso funziona tutto.

ciao!