HTTP Status 500 - Request processing failed; nested exception is java.lang.IllegalArgumentException: DataSource must not be null

When doing a query in a dao class, the following error appears:

My spring-context.xml is:

<mvc:interceptors>
    <bean class="br.com.softwarescomerciais.os.interceptor.AutorizadorInterceptor"></bean>
</mvc:interceptors>
<mvc:default-servlet-handler/>

<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
    <property name="url" value="jdbc:mysql://192.168.101.178/sc"/>
    <property name="username" value="sfilho"/>
    <property name="password" value="123"/>
</bean>

My class gives:

@Autowired
private DataSource dataSource;

public boolean existe(Usuario usuario) {
    if (usuario == null) {
        throw new IllegalArgumentException("Usuário não deve ser nulo");
    } 

    String sql = "select NOME from USUARIOS where NOME = :NOME and SENHA = :SENHA";

    NamedParameterJdbcTemplate jdbcTemplate = new NamedParameterJdbcTemplate(dataSource); 
    Map<String, Object> parametros = new HashMap<String, Object>();
    parametros.put("NOME", usuario.getNome());
    parametros.put("SENHA", usuario.getSenha());

    SqlRowSet srs = jdbcTemplate.queryForRowSet(sql, parametros);

    boolean existe = srs.next();
    return existe;
}

Error:

  

HTTP Status 500 - Request processing failed; nested exception is   java.lang.IllegalArgumentException: DataSource must not be null

     

type Exception report

     

message Request processing failed; nested exception is   java.lang.IllegalArgumentException: DataSource must not be null

     

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   java.lang.IllegalArgumentException: DataSource must not be null   org.springframework.web.servlet.FrameworkServlet.processRequest (FrameworkServlet.java:943)   org.springframework.web.servlet.FrameworkServlet.doPost (FrameworkServlet.java:833)   javax.servlet.http.HttpServlet.service (HttpServlet.java:648)   org.springframework.web.servlet.FrameworkServlet.service (FrameworkServlet.java:807)   javax.servlet.http.HttpServlet.service (HttpServlet.java:729)   org.apache.tomcat.websocket.server.WsFilter.doFilter (WsFilter.java:53)   root cause

     

java.lang.IllegalArgumentException: DataSource must not be null   org.springframework.util.Assert.notNull (Assert.java:112)   org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate. (NamedParameterJdbcTemplate.java:89)   br.softwarescomerciais.os.dao.UsuarioDao.existe (UserDao.java:27)   br.com.softwarescomerciais.os.controller.LoginController.efetuaLogin (LoginController.java:34)   sun.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)   sun.reflect.NativeMethodAccessorImpl.invoke (Unknown Source)   sun.reflect.DelegatingMethodAccessorImpl.invoke (Unknown Source)   java.lang.reflect.Method.invoke (Unknown Source)   org.springframework.web.method.support.InvocableHandlerMethod.invoke (InvocableHandlerMethod.java:214)   org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest (InvocableHandlerMethod.java:132)   org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle (ServletInvocableHandlerMethod.java:104)   org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod (RequestMappingHandlerAdapter.java:748)   org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal (RequestMappingHandlerAdapter.java:689)   org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle (AbstractHandlerMethodAdapter.java:83)   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:931)   org.springframework.web.servlet.FrameworkServlet.doPost (FrameworkServlet.java:833)   javax.servlet.http.HttpServlet.service (HttpServlet.java:648)   org.springframework.web.servlet.FrameworkServlet.service (FrameworkServlet.java:807)   javax.servlet.http.HttpServlet.service (HttpServlet.java:729)   org.apache.tomcat.websocket.server.WsFilter.doFilter (WsFilter.java:53)