使用httpclient实现http接口调用实例

使用httpclient实现http接口调用实例

假设服务接口如下：

接口地址： http://192.168.0.1/service/sendsms

请求方式： post

需要传递参数： c= {"uid":"10000","title":"test a title","content":"this is a test"}

参数内容为json格式

输出：{result:0,code:"success"} 

格式为json格式：result：1 .成功，0. 失败

code: 为提示信息

客户端调用代码：使用httpclient-4.0.1.jar

 

package com.yanek.test;import java.io.IOException;import java.util.ArrayList;import java.util.List;import net.sf.json.JSONObject;import org.apache.http.HttpResponse;import org.apache.http.NameValuePair;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.HttpClient;import org.apache.http.client.entity.UrlEncodedFormEntity;import org.apache.http.client.methods.HttpPost;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.message.BasicNameValuePair;import org.apache.http.util.EntityUtils;public class TestSendSMS {/** * @param args */public static void main(String[] args) {String uid="12345678";String title="test";String content="test a content";String ret=sendSms(uid ,title,content);System.out.println(ret);if(ret.indexOf("失败")<0){System.out.println("成功发送sms");}else{System.out.println("失败发送");}}public static String sendSms(String uid,String title,String content){HttpClient httpclient = new DefaultHttpClient();String smsUrl="http://192.168.0.1/service/sendsms";HttpPost httppost = new HttpPost(smsUrl);String strResult = "";try {List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();JSONObject jobj = new JSONObject();jobj.put("uid", uid);jobj.put("title", title);jobj.put("content",content);nameValuePairs.add(new BasicNameValuePair("msg", getStringFromJson(jobj)));httppost.addHeader("Content-type", "application/x-www-form-urlencoded");httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs,"UTF-8"));HttpResponse response = httpclient.execute(httppost);if (response.getStatusLine().getStatusCode() == 200) {/*读返回数据*/String conResult = EntityUtils.toString(response.getEntity());JSONObject sobj = new JSONObject();sobj = sobj.fromObject(conResult);String result = sobj.getString("result");String code = sobj.getString("code");if(result.equals("1")){strResult += "发送成功";}else{strResult += "发送失败，"+code;}} else {String err = response.getStatusLine().getStatusCode()+"";strResult += "发送失败:"+err;}} catch (ClientProtocolException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}return strResult;}private static String getStringFromJson(JSONObject adata) {StringBuffer sb = new StringBuffer();sb.append("{");for(Object key:adata.keySet()){sb.append("\""+key+"\":\""+adata.get(key)+"\",");}String rtn = sb.toString().substring(0, sb.toString().length()-1)+"}";return rtn;}}