ssglygatewaybean.java

以前做的一个j2ee的项目

package gov.gdlt.ssgly.taxcore.comm.gateway;

import javax.ejb.SessionBean;
import javax.ejb.SessionContext;
import javax.ejb.CreateException;
import gov.gdlt.ssgly.taxcore.comm.blh.BaseBizLogicHandler;
import gov.gdlt.ssgly.taxcore.comm.event.RequestEvent;
import gov.gdlt.ssgly.taxcore.comm.event.ResponseEvent;
import gov.gdlt.ssgly.taxcore.comm.exception.TaxBaseSystemException;
import gov.gdlt.ssgly.taxcore.comm.exception.TaxThrowableException;
import gov.gdlt.ssgly.taxcore.comm.log.LogWritter;
import gov.gdlt.ssgly.taxcore.comm.bizinterface.ISsglyService;
import gov.gdlt.ssgly.taxcore.comm.servicelocator.BLHLocator;

public class SsglyGatewayBean implements SessionBean, ISsglyService {
    SessionContext sessionContext;

    public void ejbCreate() throws CreateException {
    }

    public void ejbRemove() {
    }

    public void ejbActivate() {
    }

    public void ejbPassivate() {
    }


    public void setSessionContext(SessionContext sessionContext) {
        this.sessionContext = sessionContext;
    }

    public ResponseEvent invokeTask(RequestEvent req) throws Exception {
        ResponseEvent respEvent = null;

        try {
            respEvent = executeBizProcess(req);
            processResult(req, respEvent);
        } catch (Exception e) {
            if (respEvent == null) {
                respEvent = new ResponseEvent();
            }
            execptionProcess(e, respEvent);
        } catch (Throwable t) {
            if (respEvent == null) {
                respEvent = new ResponseEvent();
            }
            execptionProcess(new TaxThrowableException(), respEvent);
        }

        return respEvent;

    }

    public String getVersion() {
        return "1.0";
    }

    private ResponseEvent executeBizProcess(RequestEvent req) throws
            Exception {
        String blhClassName = req.getBlhClassName();

        BaseBizLogicHandler bizHandler = BLHLocator.getInstance().getBLHandler(
                blhClassName);
        ResponseEvent res = bizHandler.execute(req);

        return res;
    }

    private void processResult(RequestEvent req, ResponseEvent res) throws
            Exception {
        if (res == null) {
            throw new TaxBaseSystemException("YCGY09998");
        }
    }

    private void execptionProcess(Exception ex, ResponseEvent res) throws
            Exception {
        // log system and application level exceptions here.
        // set response code
        res.setRepCode(ex.getMessage());

        throw ex;
    }

}