NC憑證接口（Java發送流和處理返回結果）

問題描述：

　　金融行業在系統模塊分為財務和業務兩個系統，我公司是負責業務模塊系統，NC公司負責財務系統。但是財務有時候需要生成憑證，這時候就涉及業務模塊了，我方就需要寫NC憑證接口。這時候就需要三方交互好，確定規則。簡單的說，就是我方發送一個正確的一個XML格式的字符給NC公司，然后NC公司會判斷這個XML是不是符合規則，返回一個xml格式結果。好了，不多說，其實就是寫一個Java代碼，發送xml格式流和獲取返回的xml格式的結果處理。

 

    public String checkNCSendPzFlag(String sendXML) throws Exception {
        String result = "";//returne標識
        try {
            /*********將xml發送到目標服務器*****************/
            //將xml保存在本地文件夾
            String path = "F:\\xml_voucher\\IMP\\NC.xml";
            File file = new File("F:\\xml_voucher\\IMP");
            file.mkdirs();//創建父文件夾
            File f2 = new File(path);
            f2.createNewFile();
            FileOutputStream fos = new FileOutputStream(f2);
            fos.write(sendXML.getBytes("utf-8"));//寫入並設置編碼格式
            fos.flush();
            fos.close();

            //獲取Servlet連接並設置請求的方法
            String url = "http://10.68.3.5:8020/service/XChangeServlet?account=04&groupcode=1";//NC接口地址
            URL realURL = new URL(url);
            HttpURLConnection connection = (HttpURLConnection) realURL
                    .openConnection();
            connection.setDoOutput(true);
            connection.setRequestProperty("Content-type", "text/xml");
            connection.setRequestMethod("POST");
            
            //將Document對象寫入連接的輸出流中
            BufferedOutputStream out = new BufferedOutputStream(connection
                    .getOutputStream());
            BufferedInputStream input = new BufferedInputStream(
                    new FileInputStream(path));
            int length;
            byte[] buffer = new byte[1000];
            while ((length = input.read(buffer, 0, 1000)) != -1) {
                out.write(buffer, 0, length);
            }
            input.close();
            out.close();

            /***************從連接的輸入流中取得回執信息***************/
            //輸入流獲取返回的xml，寫入Document
            InputStream inputStream = connection.getInputStream();
            InputStreamReader isr = new InputStreamReader(inputStream, "utf-8");
            BufferedReader bufreader = new BufferedReader(isr);
            String xmlString = "";
            int c;
            while ((c = bufreader.read()) != -1) {
                System.out.print((char) c);
                xmlString += (char) c;
            }
            input.close();
            Document resDoc = DocumentHelper.parseText(xmlString);

            /************對回執結果的后續處理…************/
            //document轉化為xml，並保存
            TransformerFactory tFactory = TransformerFactory.newInstance();
            Transformer transformer = tFactory.newTransformer();
            DocumentSource source = new DocumentSource(resDoc);
            transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
            //設置文檔的換行與縮進
            transformer.setOutputProperty(OutputKeys.INDENT, "YES");
            //設置日期格式
            SimpleDateFormat fmt = new SimpleDateFormat("yyyyMMddHHmmss");
            String resFile = "E:\\用友\\回執目錄\\BkMsg_會計憑證_"
                    + fmt.format(new Date()) + ".xml";
            File resDis = new File("E:\\用友\\回執目錄\\");
            if (!resDis.exists())
                resDis.mkdirs();
            StreamResult results = new StreamResult(new File(resFile));
            transformer.transform(source, results);

            //jdom解析XML
            SAXBuilder builder = new SAXBuilder();
            org.jdom.Document doc = builder.build(new File(resFile));
            Element foo = doc.getRootElement();
            List allChildren = foo.getChildren();
            for (int i = 0; i < allChildren.size(); i++) {
                System.out.println(" 發送狀態:"
                        + ((Element) allChildren.get(i)).getChild("resultcode").getText());
                System.out.print("測試信息"
                        + ((Element) allChildren.get(i)).getChild("resultdescription").getText());
            }

            if (((Element) allChildren.get(0)).getChild("resultcode").getText()
                    .equals("1")) {
                result = "導入成功!";
            } else {
                result = "導入失敗:"
                        + ((Element) allChildren.get(0)).getChild(
                                "resultdescription").getText();
            }
        } catch (Exception e) {
            // TODO: handle exception
            result = "導入失敗" + e.getMessage();
            e.printStackTrace();
        }
        return result;
    }