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package httpclient;

import java.io.IOException;
import java.net.URLEncoder;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpMethod;
import org.apache.commons.httpclient.NameValuePair;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.methods.PostMethod;

public class HttpClientTest {

	public static void main(String[] args) throws Exception{
		String url = "/webservices/DomesticAirline.asmx/getDomesticAirlinesTime";
		String host = "www.webxml.com.cn";
		String param = "startCity="+URLEncoder.encode("杭州", "utf-8")+"&lastCity=&theDate=&userID=";
		HttpClient httpClient = new HttpClient();
		httpClient.getHostConfiguration().setHost(host, 80, "http");		
		
		HttpMethod method = getMethod(url, param);
		//HttpMethod method = postMethod(url);
		
		httpClient.executeMethod(method);
		
		String response = method.getResponseBodyAsString();
		//String response = new String(method.getResponseBodyAsString().getBytes("ISO-8859-1"));				
		System.out.println(response);
	}
	
	private static HttpMethod getMethod(String url,String param) throws IOException{
		GetMethod get = new GetMethod(url+"?"+param);
		get.releaseConnection();
		return get;
	}
		
	private static HttpMethod postMethod(String url) throws IOException{ 
		PostMethod post = new PostMethod(url);
		post.setRequestHeader("Content-Type","application/x-www-form-urlencoded;charset=gbk");  
		NameValuePair[] param = { new NameValuePair("startCity","杭州"),
				new NameValuePair("lastCity","沈阳"),
				new NameValuePair("userID",""),
				new NameValuePair("theDate","")	} ;
    	post.setRequestBody(param);
    	post.releaseConnection();
		return post;
	}
}

 
如果PostMethod提交的是中文字符，需要加上相应的编码格式：  post.setRequestHeader("Content-Type","application/x-www-form-urlencoded;charset=gbk");  
如果GetMethod提交的参数有中文字符，需要先转换成utf-8格式：  URLEncoder.encode("杭州", "utf-8");