主要是设置http头
在HostConfiguration.setProxy里设置。如下面代码:
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.commons.httpclient.DefaultHttpMethodRetryHandler;
import org.apache.commons.httpclient.Header;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.UsernamePasswordCredentials;
import org.apache.commons.httpclient.auth.AuthScope;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.params.HttpMethodParams;
public class HttpClientUse {
public static void main(String[] args) throws HttpException, IOException {
HttpClient httpClient = new HttpClient();
httpClient.getHostConfiguration().setProxy("localhost", 808);
/*//需要验证
UsernamePasswordCredentials creds = new UsernamePasswordCredentials("chenlb", "123456");
httpClient.getState().setProxyCredentials(AuthScope.ANY, creds);
*/
//设置http头
List<Header> headers = new ArrayList<Header>();
headers.add(new Header("User-Agent", "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)"));
httpClient.getHostConfiguration().getParams().setParameter("http.default-headers", headers);
GetMethod method = new GetMethod("http://www.baidu.com");
method.getParams().setParameter(HttpMethodParams.RETRY_HANDLER,
new DefaultHttpMethodRetryHandler(3, false));
try {
int statusCode = httpClient.executeMethod(method);
if (statusCode != HttpStatus.SC_OK) {
System.out.println("Method failed code="+statusCode+": " + method.getStatusLine());
} else {
System.out.println(new String(method.getResponseBody(), "gb2312"));
}
} finally {
method.releaseConnection();
}
}
}
如果要用户名与密码验证的,请把/* */注释去掉。使验证有效。验证,关键是:UsernamePasswordCredentials creds = new UsernamePasswordCredentials("chenlb", "123456");
httpClient.getState().setProxyCredentials(AuthScope.ANY, creds);
设置http请求头.List<Header> headers = new ArrayList<Header>();
headers.add(new Header("User-Agent", "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)"));
httpClient.getHostConfiguration().getParams().setParameter("http.default-headers", headers);
在HostConfiguration.setProxy里设置。如下面代码:
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.commons.httpclient.DefaultHttpMethodRetryHandler;
import org.apache.commons.httpclient.Header;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpException;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.UsernamePasswordCredentials;
import org.apache.commons.httpclient.auth.AuthScope;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.params.HttpMethodParams;
public class HttpClientUse {
public static void main(String[] args) throws HttpException, IOException {
HttpClient httpClient = new HttpClient();
httpClient.getHostConfiguration().setProxy("localhost", 808);
/*//需要验证
UsernamePasswordCredentials creds = new UsernamePasswordCredentials("chenlb", "123456");
httpClient.getState().setProxyCredentials(AuthScope.ANY, creds);
*/
//设置http头
List<Header> headers = new ArrayList<Header>();
headers.add(new Header("User-Agent", "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)"));
httpClient.getHostConfiguration().getParams().setParameter("http.default-headers", headers);
GetMethod method = new GetMethod("http://www.baidu.com");
method.getParams().setParameter(HttpMethodParams.RETRY_HANDLER,
new DefaultHttpMethodRetryHandler(3, false));
try {
int statusCode = httpClient.executeMethod(method);
if (statusCode != HttpStatus.SC_OK) {
System.out.println("Method failed code="+statusCode+": " + method.getStatusLine());
} else {
System.out.println(new String(method.getResponseBody(), "gb2312"));
}
} finally {
method.releaseConnection();
}
}
}
如果要用户名与密码验证的,请把/* */注释去掉。使验证有效。验证,关键是:UsernamePasswordCredentials creds = new UsernamePasswordCredentials("chenlb", "123456");
httpClient.getState().setProxyCredentials(AuthScope.ANY, creds);
设置http请求头.List<Header> headers = new ArrayList<Header>();
headers.add(new Header("User-Agent", "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)"));
httpClient.getHostConfiguration().getParams().setParameter("http.default-headers", headers);
然后把程序给其他的人,其他人的代理服务器认证方案是NTLM的,不知道为什么不成功?
不过若认证方案是NTLM的不能用UsernamePasswordCredentials,而必须要用NTCredentials实例。
NTCredentials实例我已经创建好了,且设置了setProxyCredentials。若是代理认证,httpclient会自己添加代理认证头部信息。自己添加不好实现,因为需要用到几种编码转化。