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

 

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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;  

    }  

}