制定hessian服务端的讉K��列表

Tue, 21 Dec 2010 08:05:00 GMT

�׃��历史原因,几个��目都选用hessian作�ؓweb service的实现方�?hessian的确是非常轻量��,��Z��http协议�q�行传输,通过自定义的串行化机制将��h��信息�q�行序列�?以二�q�制传输节省了不��的开销,速度跟socket差不�?客户端和服务器发起和接收��h��都是通过spring提供的hessian api�q�行��h��和接�?但是在服务端中�ƈ没有记录和控制远端ip地址和主机的信息,所以需要对源码�q�行一些重�?br />
对org.springframework.remoting.caucho.HessianServiceExporter�q�行重写

/**
* 重写HessianServiceExporter.handleRequest(),拦截获取�q�端调用信息
* @author chenyz
*
*/
public class HouseHessianServiceExporter extends HessianServiceExporter {

    private static String[] entryIP = {"192.168.0.1","192.168.0.3","192.168.0.3"};

    private static Log log = LogFactory.getLog("Myremote");

    @Override
    public void handleRequest(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException {
        log.info("try ==>remote 's IP:"+IpUtil.getIpAddr(request)+"remote 's host: "+request.getRemoteHost());
        int call = 0;
        for(String ip:entryIP){
            if(ip.equals(IpUtil.getIpAddr(request)))
                call++;
        }
        if(call>0){
            log.info("call ==>remote 's IP:"+IpUtil.getIpAddr(request)+"remote 's host: "+request.getRemoteHost());
            super.handleRequest(request, response);
        }
    }
}

   <bean id="shineLibWSImpl" class="com.***.shine.remote.ShineLibWSImpl"/>
    <bean name="/remote/shineinfo" class="com.***.shine.hessian.service.HouseHessianServiceExporter">
        <property name="service">
            <ref bean="shineLibWSImpl"/>
        property>
        <property name="serviceInterface">
            <value>com.***.shine.remote.ShineLibWebServicevalue>
        property>
    bean>

重写HessianServiceExporter.handleRequest(),拦截获取�q�端调用信息,提取��用端的ip信息与服务端制定的ip列表�q�行�Ҏ��,�q�将所有调用信息记录日�?br />
如果直接使用hessian的api的HessianServlet,直接对HessianServlet的service()重写,拦截�q�提取远端调用信�?br />

/**
* 重写HouseHessianServlet.service(),拦截获取�q�端调用信息
* @author chenyz
*
*/
public class HouseHessianServlet extends HessianServlet{

    private static String[] entryIP = {"192.168.0.1","192.168.0.3","192.168.0.3"};

    private static Log log = LogFactory.getLog("Myremote");

    @Override
    public void service(ServletRequest request, ServletResponse response)
            throws IOException, ServletException {
        HttpServletRequest req = (HttpServletRequest) request;
        log.info("try ==>remote 's IP:"+IpUtil.getIpAddr(req)+"remote 's host: "+request.getRemoteHost());
        int call = 0;
        for(String ip:entryIP){
            if(ip.equals(IpUtil.getIpAddr(request)))
                call++;
        }
        if(call>0){
            log.info("call ==>remote 's IP:"+IpUtil.getIpAddr(req)+"remote 's host: "+request.getRemoteHost());
            super.service(request, response);
        }
    }
}

web.xml

   <servlet>
    <servlet-name>HessianServletservlet-name>
    <servlet-class>
        com.***.product.remote.Htest
    servlet-class>
  servlet>

  <servlet-mapping>
    <servlet-name>HessianServletservlet-name>
    <url-pattern>/service/hessionurl-pattern>
  servlet-mapping>

com.***.product.remote.Htest

public class Htest extends HouseHessianServlet implements IHtest{

    public hello(){
        System.out.println("hello");
    }
}

陈于�?/a> 2010-12-21 16:05 发表评论

Thu, 16 Dec 2010 06:46:00 GMT

目前几套�pȝ��中主要��用的hessian�q�行�q�程调用webservice服务的有hessian的HessianProxyFactory(com.caucho.hessian.client.HessianProxyFactory)和spring的HessianProxyFactoryBean(org.springframework.remoting.caucho.HessianProxyFactoryBean).

1.HessianProxyFactory
查看HessianProxyFactory源码后发�?hessian在创建http��h��q�接webservice服务�q�没有对�q�接��时�q�行相关的参数设�|?所以当�|�络出现问题��׃��造成整个hessian处理的阻�?�q�而阻塞整个线�E�后�l�的处理
以下是HessianProxyFactory对连接处理的源码

protected URLConnection openConnection(URL url)
    throws IOException
  {
    URLConnection conn = url.openConnection();

    conn.setDoOutput(true);

    if (_readTimeout > 0) {
      try {
    conn.setReadTimeout((int) _readTimeout);
      } catch (Throwable e) {
      }
    }

    conn.setRequestProperty("Content-Type", "x-application/hessian");

    if (_basicAuth != null)
      conn.setRequestProperty("Authorization", _basicAuth);
    else if (_user != null && _password != null) {
      _basicAuth = "Basic " + base64(_user + ":" + _password);
      conn.setRequestProperty("Authorization", _basicAuth);
    }

    return conn;
  }

所以我们针�Ҏ��逻辑�l�承�q��写该openConnection�Ҏ��,在创建http�q�接的时候通过讄��q�接��时旉��来解军_��|�络问题��d��E�序�l�箋的问�?br />

public class MyHessianProxyFactory extends HessianProxyFactory {

    private int connectTimeOut = 10000;

    private int readTimeOut = 10000;

    public int getConnectTimeOut() {
        return connectTimeOut;
    }

    public void setConnectTimeOut(int connectTimeOut) {
        this.connectTimeOut = connectTimeOut;
    }

    public int getReadTimeOut() {
        return readTimeOut;
    }

    public void setReadTimeOut(int readTimeOut) {
        this.readTimeOut = readTimeOut;
    }

    protected URLConnection openConnection(URL url) throws IOException {
        URLConnection conn = url.openConnection();
        conn.setDoOutput(true);
        if (this.connectTimeOut > 0) {
            conn.setConnectTimeout(this.connectTimeOut);
        }
        if (this.readTimeOut > 0) {
            conn.setReadTimeout(this.readTimeOut);
        }
        conn.setRequestProperty("Content-Type", "x-application/hessian");
            if (_basicAuth != null)
                  conn.setRequestProperty("Authorization", _basicAuth);
            else if (_user != null && _password != null) {
                  _basicAuth = "Basic " + base64(_user + ":" + _password);
                  conn.setRequestProperty("Authorization", _basicAuth);
            }
        return conn;
    }
}

2.HessianProxyFactoryBean
查看spring的HessianProxyFactoryBean源码发现,它在��装hessian是直接创��Z��个HessianProxyFactory实例,然后利用该实例完成创��E�服�?br />

public class HessianProxyFactoryBean extends HessianClientInterceptor implements FactoryBean {

    private Object serviceProxy;

    public void afterPropertiesSet() {
        super.afterPropertiesSet();
        this.serviceProxy = ProxyFactory.getProxy(getServiceInterface(), this);
    }


    public Object getObject() {
        return this.serviceProxy;
    }

    public Class getObjectType() {
        return getServiceInterface();
    }

    public boolean isSingleton() {
        return true;
    }

}

所以对此的解决�Ҏ��与上面差不多,�l�承HessianProxyFactoryBean然后加入相应的连接超时和��d��时的变�?重写afterPropertiesSet�Ҏ��,�q�且同时完成上面�W�一步对HessianProxyFactory的改�?�q�样��p��保证�q�接�q�程webserver服务器时不会因�ؓ�|�络原因��d��E�序的执�?br />

public class MyHessianProxyFactoryBean extends HessianProxyFactoryBean {

    private MyHessianProxyFactory proxyFactory = new MyHessianProxyFactory();

    private int readTimeOut = 10000;

    private int connectTimeOut = 10000;

    public int getReadTimeOut() {
        return readTimeOut;
    }

    public void setReadTimeOut(int readTimeOut) {
        this.readTimeOut = readTimeOut;
    }

    public int getConnectTimeOut() {
        return connectTimeOut;
    }

    public void setConnectTimeOut(int connectTimeOut) {
        this.connectTimeOut = connectTimeOut;
    }

    public void afterPropertiesSet() {
        proxyFactory.setReadTimeout(readTimeOut);
        proxyFactory.setConnectTimeOut(connectTimeOut);
        setProxyFactory(proxyFactory);
        super.afterPropertiesSet();
    }
}

陈于�?/a> 2010-12-16 14:46 发表评论

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制定hessian服务端的讉K��列表