Java 通过Http请求对接第三方短信平台接口

今天在项目中接到一个小任务要对接第三方短信平台开发，这个之前就写过，正在想拿之前的代码来看时，发现找不到了，索性果断写了一个，并在此记录下来。

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;

/**
 * Http测试 2016/12/06
 * @author pwl
 *
 */
public class TestHttpClient {
	
	
	public static void main(String[] args) {
		doPost();
	}
	
	public static void doPost(){
		String url = "http://test:80/ApiService.asmx/Send?";
		String account = "test";
		String pwd = "test";
		String product = "test";
		String phoneNumber = "test";
		String content = "测试短信内容";
		StringBuilder builder = new StringBuilder(url);
		builder.append("account="+account + "&");//添加账号
		builder.append("pwd="+pwd + "&");//添加密码
		builder.append("product="+product + "&");//添加产品号
		builder.append("mobile="+phoneNumber +"&");//添加手机号码
                builder.append("message="+content);
		
		URL localURL = null;
		URLConnection connection = null;
		HttpURLConnection httpURLConnection = null;
                InputStream inputStream = null;
		try {
		　　localURL = new URL(builder.toString());
		　　connection = localURL.openConnection();
	        　　httpURLConnection = (HttpURLConnection)connection;
	        
	            httpURLConnection.setDoOutput(true);
	            httpURLConnection.setRequestMethod("GET");
	        
	            String result = null;
     
                    inputStream = httpURLConnection.getInputStream();
                    result = convertStreamToString(inputStream);
            
                    String resultCode = parseResult(result);
                     
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	
	/**
	 * 拼接请求参数
	 * @param parameterMap
	 * @return
	 */
    public static String translateParams(Map<String,Object> parameterMap){
   	 StringBuffer parameterBuffer = new StringBuffer();
        if (parameterMap != null) {
            Iterator<String> iterator = parameterMap.keySet().iterator();
            String key = null;
            String value = null;
            while (iterator.hasNext()) {
                key = (String)iterator.next();
                if (parameterMap.get(key) != null) {
                    value = (String)parameterMap.get(key);
                } else {
                    value = "";
                }
                parameterBuffer.append(key).append("=").append(value);
                if (iterator.hasNext()) {
                    parameterBuffer.append("&");
                }
            }
        }
		return parameterBuffer.toString(); 
   }
    
    /**
     * 将结果流转为字符串
     * @param is
     * @return
     */
	public static String convertStreamToString(InputStream is) {    
        StringBuilder builder = new StringBuilder();    
        byte[] bytes = new byte[4096];  
        int size = 0;  
        try {    
        　　while ((size = is.read(bytes)) > 0) {  
           　　String str = new String(bytes, 0, size, "UTF-8");  
          　　 builder.append(str);  
           }  
        } catch (IOException e) {    
            e.printStackTrace();    
        } finally {    
            try {    
                is.close();    
            } catch (IOException e) {    
               e.printStackTrace();    
            }    
        }    
        return builder.toString();    
    }
	
	/**
	 * 解析返回结果
	 */
	public static String parseResult(String xml){
		String resultCode = null;
		try {
			Document document = DocumentHelper.parseText(xml);
			Element root = document.getRootElement();
			String result = root.getStringValue();
			if(result.contains(",")){
				resultCode = result.split(",")[0];
			}
		} catch (DocumentException e) {
			e.printStackTrace();
		}
		return resultCode;
	}
}
      

因为短信接口返回的是一个xml的字符串，具体内容如下：

<?xml version="1.0" encoding="utf-8"?>
<string xmlns="http://www.itmarked.com/">-102,2016/12/7 9:16:44</string>

在这里使用Dom4j 进行解析，解析方法parseResult，而translateParams方法是将Map中的参数进行拼接，一个工具方法。