Flex mySQL db connection with Blazeds

Question

I'm currently writing a little program and want to use Blazeds in combination with Flex. The connetion between Blazeds and my MySQL data base works fine but when I try to connect to via RemoteObject over the running catalina server I always get an error message:

[RPC Fault faultString="No destination with id 'employeeService' is registered with any service." faultCode="Server.Processing" faultDetail="null"] at mx.rpc::AbstractInvoker/http://www.adobe.com/2006/flex/mx/internal::faultHandler()[E:\dev\3.0.x\frameworks\projects\rpc\src\mx\rpc\AbstractInvoker.as:216] at mx.rpc::Responder/fault()[E:\dev\3.0.x\frameworks\projects\rpc\src\mx\rpc\Responder.as:49] at mx.rpc::AsyncRequest/fault()[E:\dev\3.0.x\frameworks\projects\rpc\src\mx\rpc\AsyncRequest.as:103] at NetConnectionMessageResponder/statusHandler()[E:\dev\3.0.x\frameworks\projects\rpc\src\mx\messaging\channels\NetConnectionChannel.as:523] at mx.messaging::MessageResponder/status()[E:\dev\3.0.x\frameworks\projects\rpc\src\mx\messaging\MessageResponder.as:222]

I checked the remoting-config file and the destination id is there. Is it necessary to configure catalina?

Did you restart your server after modifying your config files? — dtuckernet

jkat jkat · Accepted Answer · 2012-07-06T04:03:44

Using Spring-Flex / Mysql / BlazeDS 4

In lib need jars

sping-flex-core-1.5
mysql-connector-java-5.1.10
org.springframework.beans-3.0.5.RELEASE
org.springframework.context-3.0.5.RELEASE
org.springframework.jdbc-3.0.5.RELEASE..etc

Create Employee VO Actionscript

[Bindable]
[RemoteClass (alias="com.model.employee.Employee")]
public class Employee

Java side package com.model.employee;

Employee.java

EmployeeService.java (interface)..getEmployeeById(int id)

EmployeeServiceImpl.java

@Service("employeeService")
@RemotingDestination(channels = { "my-amf", "my-secure-amf" })
public class EmployeeServiceImpl implements EmployeeService {

private final DataSource dataSource;

public UserServiceImpl(DataSource dataSource) {
    this.dataSource = dataSource;
}

@RemotingInclude
public Employee getEmployeeById(int id) {
    Employee employee= new Employee ();
    Connection c = null;
    try {
        c = this.dataSource.getConnection();
        PreparedStatement ps = c.prepareStatement("SELECT * FROM employee WHERE employee_id=?");
        ps.setInt(1, id);
        ResultSet rs = ps.executeQuery();
        if (rs.next()) {
            employee= new Employee();
            employee.setEmployeeId(rs.getInt("employee_id"));
            employee.setEmployeeName(rs.getString("employee_name"));
        }
    } catch (Exception e) {
        e.printStackTrace();
        throw new RuntimeException(e);
    }
    return employee;
}

Places complied classes in WEB-INF/classes

WEB-INF / appicationContext.xml

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:flex="http://www.springframework.org/schema/flex"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:jdbc="http://www.springframework.org/schema/jdbc"

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-3.0.xsd
    http://www.springframework.org/schema/flex 
    http://www.springframework.org/schema/flex/spring-flex-1.5.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-3.0.xsd
    http://www.springframework.org/schema/tx
    http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
    http://www.springframework.org/schema/jdbc
    http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd">

<flex:message-broker>
  <flex:remoting-service default-channels="my-amf" />  
  </flex:message-broker>

<context:annotation-config />
<context:component-scan base-package="com.model" />

<tx:annotation-driven />

<bean id="employeeService" class="com.model.employee.EmployeeServiceImpl">
    <constructor-arg ref="dataSource" />        
</bean>

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">

    <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
    <property name="url" 
    value="jdbc:mysql://dxfcmm:3306/eunice? autoReconnect=true&amp;zeroDateTimeBehavior=convertToNull"/>
    <property name="username" value="XXX" />
    <property name="password" value="YYY" />
  <property name="validationQuery" value="SELECT 1"/>
</bean>

Do not require remote-config.xml

Fire up tomcat, should see INFO: Remoting destination 'employeeService' has been started started successfully.

IN MMXL [Bindable] private var empl:Employee;

define RemoteObject roEmp with resultHandler call roEmp.getEmployeeById(id) empl= event.result as Employee;

Flex mySQL db connection with Blazeds

2 Answers