然后还有@Param (是否是代码中的setMethodArgs这个方法设置,还是在其它地方设置).以及adapt的实现方法，这里只定义了一个接口,没有实现方法.

 public void process(ActionContext ac) throws Throwable {
        List<String> phArgs = ac.getPathArgs();
        Object[] args = adaptor.adapt(ac.getServletContext(),
                                      ac.getRequest(),
                                      ac.getResponse(),
                                      phArgs.toArray(new String[phArgs.size()]));
        ac.setMethodArgs(args);
        doNext(ac);
    }

获取到的 args ：
[{}, org.apache.catalina.connector.RequestFacade@39e308c9]

设置entity代码：

	public String sendHttpPost(String httpUrl, String params, String contentType) {
		HttpPost httpPost = new HttpPost(httpUrl);// 创建httpPost
		try {
			// 设置参数
			StringEntity stringEntity = new StringEntity(params, "UTF-8");
			stringEntity.setContentEncoding("UTF-8");
			stringEntity.setContentType(contentType);
			httpPost.addHeader("Content-Type", contentType);
			httpPost.setEntity(stringEntity);
		} catch (Exception e) {
			e.printStackTrace();
		}
                //调的是execute 方法.
		return sendHttpPost(httpPost);
	}