hessian 简单实现

      Java的通信方式有很多，最快的是rmi,还有socket,webservice 之类；今天项目刚好要用rmi,socket 都需要防火墙单独的开放端口，想想还是用简单的 http 请求把；据说hessian 比webservice 快一点就顺便拿来做个例子。

     废话不说了，他的官网地址下载地址是 http://hessian.caucho.com/ ， 最新版本是4.0.7，包很小，功能很强大，据官网上说 还支持rmi。

   先定义请求接口：

public interface IuploadifyInfo {
          //接受文件详细信息
	public String receiveInfo(List<UploadifyFile> uploadifyFiles);
}

  服务端 实现:

public class UploadifyInfo  extends HessianServlet implements  IuploadifyInfo {
	private static final long serialVersionUID = 7410494948359166445L;
	@Override
	public String receiveInfo(List<UploadifyFile> uploadifyFiles) {
		if (UtilGet.listIsEmpty(uploadifyFiles)) {
			// 接受文件详细消息
//			System.out.println(uploadifyFiles);
		}
		return "";
	}
}

    然后配置监听请求(配置servlet)

    <servlet>   
        <servlet-name>uploadifys</servlet-name>   
        <servlet-class>cn.test..bs.UploadifyInfo</servlet-class>   
    </servlet>  
    <servlet-mapping>   
        <servlet-name>uploadifys</servlet-name>   
        <url-pattern>/info</url-pattern>
    </servlet-mapping>

 然后写客户端:

public class HessionUitil {
	public void processInfo(List<UploadifyFile> uploadifyFiles) {
		HessianProxyFactory factory = new HessianProxyFactory();
		IuploadifyInfo h = null;
		try {
			h = (IuploadifyInfo) factory.create(IuploadifyInfo.class,"/info");
			h.receiveInfo(uploadifyFiles);
		} catch (MalformedURLException e) {
			e.printStackTrace();
		}
	}
}

 调用客户端 List<UploadifyFile> uploadifyFiles 这个list 信息就会被服务端拦截到打印出来。