httpclient3与httpclient4访问的一些区别

httpclient3访问如下：

HttpClient client = new HttpClient();
GetMethod method = new GetMethod(url);
int statusCode = client.executeMethod(method);
method.getResponseBody();

在3中httpclient是类。

httpclient4：

HttpClient client = new DefaultHttpClient();
HttpGet method = new HttpGet(url);
HttpResponse httpResponse = client.execute(method);
httpResponse.getEntity().getContent();

在4中httpclient是接口了。

差别还是比较大的。如果过度的话，还是要看官方文档的，特别是设置参数之类的。