【转】HttpClient4基础2--通过认证代理访问网页

HttpClient发布4.0了 而且底层完全重写了，据说无论是效率还是结构都有质的飞跃。?
现在也要与时具进，研究研究。

?

?

1. package?test.httpclient4.proxy;?????
2. import?java.io.BufferedReader;???????
3. import?java.io.IOException;?????
4. import?java.io.InputStreamReader;???????
5. import?org.apache.http.HttpEntity;???????
6. import?org.apache.http.HttpHost;???????
7. import?org.apache.http.HttpResponse;???????
8. import?org.apache.http.HttpStatus;?????
9. import?org.apache.http.auth.AuthScope;?????
10. import?org.apache.http.auth.UsernamePasswordCredentials;?????
11. import?org.apache.http.client.ClientProtocolException;?????
12. import?org.apache.http.client.CredentialsProvider;?????
13. import?org.apache.http.client.HttpClient;?????
14. import?org.apache.http.client.methods.HttpGet;???????
15. import?org.apache.http.conn.params.ConnRoutePNames;???????
16. import?org.apache.http.impl.client.BasicCredentialsProvider;?????
17. import?org.apache.http.impl.client.DefaultHttpClient;??????
18. import?org.apache.http.util.EntityUtils;?????
19. public?class?GetHttpByProxyCredentials?{?????
20. ????
21. ????/**???
22. ?????*?@param?args???
23. ?????*?@throws?IOException????
24. ?????*?@throws?ClientProtocolException????
25. ?????*/????
26. ????public?static?void?main(String[]?args)?throws?ClientProtocolException,?IOException?{?????
27. ????????//实例化一个HttpClient?????
28. ????????HttpClient?httpClient?=?new?DefaultHttpClient();???????
29. ????????//设定目标站点?????
30. ????????HttpHost?httpHost?=?new?HttpHost("www.shanhe114.com");???????
31. ????????//设置代理对象?ip/代理名称,端口?????
32. ????????HttpHost?proxy?=?new?HttpHost("proxy.tt",?8080);?????
33. ????????//实例化验证?????
34. ????????CredentialsProvider?credsProvider?=?new?BasicCredentialsProvider();?????
35. ????????//设定验证内容?????
36. ????????UsernamePasswordCredentials?creds?=?new?UsernamePasswordCredentials("fttj",?"ft07");?????
37. ????????//创建验证?????
38. ????????credsProvider.setCredentials(?????
39. ????????????new?AuthScope(AuthScope.ANY_HOST,?AuthScope.ANY_PORT),??????
40. ????????????creds);?????
41. ????????httpClient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY,?proxy);?????
42. ????????((DefaultHttpClient)httpClient).setCredentialsProvider(credsProvider);?????
43. ????????????????
44. ????????//?目标地址???????
45. ????????HttpGet?httpget?=?new?HttpGet("/");???????
46. ????????//?执行???????
47. ????????HttpResponse?response?=?httpClient.execute(httpHost,?httpget);???????
48. ????????if(HttpStatus.SC_OK==response.getStatusLine().getStatusCode()){?????
49. ????????????//请求成功?????
50. ????????????//取得请求内容?????
51. ????????????HttpEntity?entity?=?response.getEntity();?????
52. ????????????//显示内容?????
53. ????????????if?(entity?!=?null)?{?????
54. ????????????????//?显示结果?????
55. ?????????????????????
56. ????????????????System.out.println(EntityUtils.toString(entity,"utf-8"));?????
57. ?????????????????????
58. ????????????}?????
59. ????????????if?(entity?!=?null)?{?????
60. ????????????????entity.consumeContent();?????
61. ????????????}?????
62. ????????}?????
63. ????}?????
64. }????

?