http请求各种数据的接受

一、接受请求的http数据

　　1、接受客户请求的数据，例如xml数据格式，代码如下：

　　　　此代码相当于服务端

public String analyzeWeixinXMLStr(HttpServletRequest request){
        String  xmlStr = null;
        try
        {
            BufferedReader reader = request.getReader();
            String temp = null;
            StringBuffer requestXml = new StringBuffer();
            while((temp = reader.readLine()) != null)
            {
                requestXml.append(temp);
            }
            //System.out.println(requestXml.toString());
            if(requestXml.toString().length()>0){
                // 转码，解决乱码的问题
                xmlStr = new String(requestXml.toString().getBytes("iso8859-1"), "UTF-8");
            }
        }
        catch (Exception e)
        {
            xmlStr = null;
            OttExecutionContext.error(e,"WxCommBiz.analyzeWeixinXMLStr is error");
        }
        return xmlStr;
    }

　　2、将xml的数据格式转换为map,便于获取，代码如下：

public HashMap<String, String> analyzeWeixinXMLHashMap(String requestXml){
        HashMap<String, String> paramsXmlMap = null;
        try
        {
            if(requestXml.toString().length()>0){
                paramsXmlMap = new HashMap<String, String>();// 获取微信服务发送请求，并返回第一层级json格式数据
                Document document = DocumentHelper.parseText(requestXml);
                Element items = document.getRootElement();
                for (Iterator i = items.elementIterator(); i.hasNext();)
                {
                    Element item = (Element) i.next();
                    paramsXmlMap.put(item.getName(), item.getText());
                }
            }
        }
        catch (Exception e)
        {
            paramsXmlMap = null;
            OttExecutionContext.error(e,"WxCommBiz.analyzeWeixinXMLHashMap is error");
        }
        return paramsXmlMap;
    }

　　3、将xml格式的数据推送给接口服务器，并获取返回结果；

　　　　此代码相当于客服端

    public String pushMsg(String reqXml) throws Exception
    {
        String result=null;
        try{
　　　　　　　//请求服务器接口（将数据推送给服务器接口）
            String address = SystemGlobals.getValue("addressCustomerService");
            URL url = null;
            HttpURLConnection urlConn = null;
            url = new URL(address);
            urlConn = (HttpURLConnection) url.openConnection();
            urlConn.setRequestMethod("POST");
            urlConn.setDoOutput(true);
            OutputStream out = urlConn.getOutputStream();
            //Post请求参数
            reqXml=URLEncoder.encode(reqXml,"utf-8");
            String param="msg="+reqXml;
            out.write(param.getBytes("utf-8"));
            out.flush();
            out.close();
　　　　　　　
　　　　　　 //接受服务器返回的数据结果
            StringBuffer str = new StringBuffer();
            BufferedReader in = new BufferedReader(new InputStreamReader(urlConn.getInputStream(),"utf-8"));
            String inputLine = null;
            while ( (inputLine = in.readLine()) != null){
                str.append(inputLine);
            }
            in.close();
            result=parseSingleStr(str.toString());

        }catch(Exception e){
            OttExecutionContext.error(e, "消息转发异常！");
        }

        if(result!=null&&HTTP_SUCCESS.equals(result)){
            OttExecutionContext.info("消息转发成功！result:"+result);
        }else{
            OttExecutionContext.info("消息转发失败！result:"+result);
        }

        return result;
    }

    private static final Pattern singleResPattern=Pattern.compile("(.+)\"http://tempuri.org/\">(\\S+)</(.+)");
    /**
     * 解析xml格式单个返回结果
     * @datetime 2017-4-12
     */
    public static String parseSingleStr(String resXML){
        if(resXML==null){
            return null;
        }
        String result=null;
        Matcher matcher=singleResPattern.matcher(resXML);
        if(matcher.matches()){
            MatchResult matchResult=matcher.toMatchResult();
            result=matchResult.group(2);
        }
        return result;
    }