http客户端开发get、Post两种方式

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");