• 微信下载对账单


    调用微信对账单接口

    public static void main(String[] args) throws Exception {
    		// 随机数
    		String str = WXPayUtil.generateNonceStr();
    		// data
    		Map<String, String> data = new LinkedHashMap<>();
    		// Map<String, String> data1 = new LinkedHashMap<>();
    		data.put("appid", APPID);
    		data.put("bill_date", "20191111");
    		data.put("bill_type", "ALL");
    		data.put("mch_id", MCH_ID);
    		data.put("nonce_str", str);
    	 	data.put("tar_type", "GZIP");
    		String sign = WXPayUtil.generateSignature(data, API_KEY);
    		data.put("sign", sign);
    		System.out.println(sign);
    		System.out.println(WXPayUtil.mapToXml(data));
    		String result = SendPost.post(WXPayUtil.mapToXml(data), 6000, 6000);
    //		System.out.println("result"+WXPayUtil.xmlToMap(result));
    
    		System.out.println(result);
    		if (result.startsWith("<xml>") || result.contains("error_code")) {
    			System.out.println("无数据或者日期错误");
    
    		} else {
    
    			// 获取表头以外的其他内容:交易记录、汇总表头、汇总数据
    			String otherContent = result.substring(result.indexOf("`"));
    			System.out.println("otherContent" + otherContent);
    
    			// 获取交易记录
    			String records = otherContent.substring(0, otherContent.indexOf("总"));
    			String[] total = records.split("
    ");
    
    			for (int i = 0; i < total.length; i++) {
    				String[] order = total[i].replace("`", "").split(",");
    				System.out.println("order" + order[5]);
    				.....
    			}
    
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    随机数

    /**
    	 * 获取随机字符串 Nonce Str
    	 *
    	 * @return String 随机字符串
    	 */
    	public static String generateNonceStr() {
    		char[] nonceChars = new char[32];
    		for (int index = 0; index < nonceChars.length; ++index) {
    			nonceChars[index] = SYMBOLS.charAt(RANDOM.nextInt(SYMBOLS.length()));
    		}
    		return new String(nonceChars);
    	}
    
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    生成sign签名

    /**
    	 * 生成签名
    	 *
    	 * @param data 待签名数据
    	 * @param key  API密钥
    	 * @return 签名
    	 */
    	public static String generateSignature(final Map<String, String> data, String key) throws Exception {
    		return generateSignature(data, key, SignType.MD5);
    	}
    
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    签名逻辑

    /**
    	 * 生成签名. 注意,若含有sign_type字段,必须和signType参数保持一致。
    	 *
    	 * @param data     待签名数据
    	 * @param key      API密钥
    	 * @param signType 签名方式
    	 * @return 签名
    	 */
    	public static String generateSignature(final Map<String, String> data, String key, SignType signType)
    			throws Exception {
    		Set<String> keySet = data.keySet();
    		String[] keyArray = keySet.toArray(new String[keySet.size()]);
    		Arrays.sort(keyArray);
    		StringBuilder sb = new StringBuilder();
    		for (String k : keyArray) {
    			if (k.equals(WXPayConstants.FIELD_SIGN)) {
    				continue;
    			}
    			if (data.get(k).trim().length() > 0) // 参数值为空,则不参与签名
    				sb.append(k).append("=").append(data.get(k).trim()).append("&");
    		}
    		sb.append("key=").append(key);
    		if (SignType.MD5.equals(signType)) {
    			return MD5(sb.toString()).toUpperCase();
    		} else if (SignType.HMACSHA256.equals(signType)) {
    			return HMACSHA256(sb.toString(), key);
    		} else {
    			throw new Exception(String.format("Invalid sign_type: %s", signType));
    		}
    	}
    
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    将map转化为xml

    /**
    	 * 将Map转换为XML格式的字符串
    	 *
    	 * @param data Map类型数据
    	 * @return XML格式的字符串
    	 * @throws Exception
    	 */
    	public static String mapToXml(Map<String, String> data) throws Exception {
    		org.w3c.dom.Document document = WXPayXmlUtil.newDocument();
    		org.w3c.dom.Element root = document.createElement("xml");
    		document.appendChild(root);
    		for (String key : data.keySet()) {
    			String value = data.get(key);
    			if (value == null) {
    				value = "";
    			}
    			value = value.trim();
    			org.w3c.dom.Element filed = document.createElement(key);
    			filed.appendChild(document.createTextNode(value));
    			root.appendChild(filed);
    		}
    		TransformerFactory tf = TransformerFactory.newInstance();
    		Transformer transformer = tf.newTransformer();
    		DOMSource source = new DOMSource(document);
    		transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
    		transformer.setOutputProperty(OutputKeys.INDENT, "yes");
    		StringWriter writer = new StringWriter();
    		StreamResult result = new StreamResult(writer);
    		transformer.transform(source, result);
    		String output = writer.getBuffer().toString(); // .replaceAll("
    |
    ", "");
    		try {
    			writer.close();
    		} catch (Exception ex) {
    		}
    		return output;
    	}
    
    
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    http post请求

    /**
    	 * post 请求
    	 * 
    	 * @return
    	 * @throws IOException
    	 * @throws ClientProtocolException
    	 * 
    	 * 
    	 * 
    	 */
    	public static String post(String data, int readTimeoutMs, int connectTimeoutMs)
    			throws ClientProtocolException, IOException {
    		BasicHttpClientConnectionManager connManager = null;
    		HttpClient httpClient = HttpClientBuilder.create().setConnectionManager(connManager).build();
    
    		String url = "https://api.mch.weixin.qq.com/pay/downloadbill"; // 路径
    		HttpPost httpPost = new HttpPost(url);
    		// 是指连接时间
    		RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(readTimeoutMs)
    				.setConnectTimeout(connectTimeoutMs).build();
    		httpPost.setConfig(requestConfig);
    
    		StringEntity postEntity = new StringEntity(data, "UTF-8");
    		httpPost.addHeader("Content-Type", "text/xml;charset=utf-8");
    		httpPost.addHeader("Accept-Encoding", "gzip,deflate");
    		// httpPost.addHeader("User-Agent", USER_AGENT + " " +
    		// config.getMchID());//10000100
    		httpPost.addHeader("User-Agent", USER_AGENT + " " + 1490714122);
    		httpPost.setEntity(postEntity);
    
    		HttpResponse httpResponse = httpClient.execute(httpPost);
    		// HttpEntity httpEntity = httpResponse.getEntity();
    		System.out.println(httpResponse);
    		Header[] headers = httpResponse.getHeaders("Content-Type");
    		boolean isGzip = false;
    		for (Header h : headers) {
    			if (h.getValue().equals("application/x-gzip")) {
    				// 返回头中含有gzip
    				isGzip = true;
    			}
    		}
    		if (isGzip) {
    			// 需要进行gzip解压处理
    			return EntityUtils.toString(new GzipDecompressingEntity(httpResponse.getEntity()), "UTF-8");
    		} else {
    			return EntityUtils.toString(httpResponse.getEntity());
    		}
    
    		// return EntityUtils.toString(httpEntity, "UTF-8");
    	}
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  • 原文地址:https://www.cnblogs.com/yelanggu/p/14283039.html
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