HttpClient Post和Get请求实例+ 中文参数处理_getmethod method = new getmethod(url增加参数-优快云博客

本文介绍了一个简单的Java程序，该程序利用Apache HttpClient库向指定的Web服务发送GET请求以查询从杭州出发的国内航班时间信息。文章展示了如何设置HTTP客户端、构造URL参数、执行HTTP请求并解析响应。

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转自http://starlight00.blog.163.com/blog/static/465183201210961537965/

　　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;
　　 }
　　}
　　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");