mui 微信支付 與springMVC服務器交互

昨天搞定了微信支付,沒有想象中的難,主要是官方的demo不全好多東西要本身琢磨,mui端的就不寫了支付寶的有了如出一轍.上java端的首先是jar包

一個是用來解析xml文件

一個是用來解析json

固然能夠替代

 

而後是工具類固然並非全都用的到.

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public class ConfigUtil {

/**
* 服務號相關信息
*/
public final static String APPID = "****";// 服務號的應用號
public final static String MCH_ID = "*****";// 商戶號
public final static String API_KEY = "******";// API密鑰
public final static String SIGN_TYPE = "MD5";// 簽名加密方式

public final static String UNIFIED_ORDER_URL = "https://api.mch.weixin.qq.com/pay/unifiedorder";

}

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/**
* md5加密
*
* @author Administrator
*
*/
public class MD5Util {

private static String byteArrayToHexString(byte b[]) {
StringBuffer resultSb = new StringBuffer();
for (int i = 0; i < b.length; i++)
resultSb.append(byteToHexString(b[i]));

return resultSb.toString();
}

private static String byteToHexString(byte b) {
int n = b;
if (n < 0)
n += 256;
int d1 = n / 16;
int d2 = n % 16;
return hexDigits[d1] + hexDigits[d2];
}

public static String MD5Encode(String origin, String charsetname) {
String resultString = null;
try {
resultString = new String(origin);
MessageDigest md = MessageDigest.getInstance("MD5");
if (charsetname == null || "".equals(charsetname))
resultString = byteArrayToHexString(md.digest(resultString
.getBytes()));
else
resultString = byteArrayToHexString(md.digest(resultString
.getBytes(charsetname)));
} catch (Exception exception) {
}
return resultString;
}

private static final String hexDigits[] = { "0", "1", "2", "3", "4", "5",
"6", "7", "8", "9", "a", "b", "c", "d", "e", "f" };

}

 

===============================================================================================================

/**
* 信任管理器
*/
public class MyX509TrustManager implements X509TrustManager {

// 檢查客戶端證書
public void checkClientTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
}

// 檢查服務器端證書
public void checkServerTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
}

// 返回受信任的X509證書數組
public X509Certificate[] getAcceptedIssuers() {
return null;
}

===============================================================================================================

/**
* 解析mxl
*
* @author Administrator
*
*/
public class XMLUtil {
/**
* 解析xml,返回第一級元素鍵值對。若是第一級元素有子節點，則此節點的值是子節點的xml數據。
*
* @param strxml
* @return
* @throws JDOMException
* @throws IOException
*/
public static Map doXMLParse(String strxml) throws JDOMException,
IOException {
strxml = strxml.replaceFirst("encoding=\".*\"", "encoding=\"UTF-8\"");

if (null == strxml || "".equals(strxml)) {
return null;
}

Map m = new HashMap();

InputStream in = new ByteArrayInputStream(strxml.getBytes("UTF-8"));
SAXBuilder builder = new SAXBuilder();
Document doc = builder.build(in);
Element root = doc.getRootElement();
List list = root.getChildren();
Iterator it = list.iterator();
while (it.hasNext()) {
Element e = (Element) it.next();
String k = e.getName();
String v = "";
List children = e.getChildren();
if (children.isEmpty()) {
v = e.getTextNormalize();
} else {
v = XMLUtil.getChildrenText(children);
}

m.put(k, v);
}

// 關閉流
in.close();

return m;
}

/**
* 獲取子結點的xml
*
* @param children
* @return String
*/
public static String getChildrenText(List children) {
StringBuffer sb = new StringBuffer();
if (!children.isEmpty()) {
Iterator it = children.iterator();
while (it.hasNext()) {
Element e = (Element) it.next();
String name = e.getName();
String value = e.getTextNormalize();
List list = e.getChildren();
sb.append("<" + name + ">");
if (!list.isEmpty()) {
sb.append(XMLUtil.getChildrenText(list));
}
sb.append(value);
sb.append("</" + name + ">");
}
}

return sb.toString();
}

}

 

===============================================================================================================

 

/**
* 支付公共工具
*
* @author Administrator
*
*/
public class PayCommonUtil {

/**
* 建立臨時字符串
*
* @param length
* 建立長度
* @return 該長度的隨機字符串
*/
public static String CreateNoncestr(int length) {
String chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
String res = "";
for (int i = 0; i < length; i++) {
Random rd = new Random();
res += chars.indexOf(rd.nextInt(chars.length() - 1));
}
return res;
}

/**
* 建立隨機字符串16位
*
* @return
*/
public static String CreateNoncestr() {
String chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
String res = "";
for (int i = 0; i < 16; i++) {
Random rd = new Random();
res += chars.charAt(rd.nextInt(chars.length() - 1));
}
return res;
}

/**
* 是否簽名正確,規則是:按參數名稱a-z排序,遇到空值的參數不參加簽名。
*
* @return boolean
*/
public static boolean isTenpaySign(String characterEncoding,
SortedMap<Object, Object> packageParams) {
StringBuffer sb = new StringBuffer();
Set es = packageParams.entrySet();
Iterator it = es.iterator();
while (it.hasNext()) {
Map.Entry entry = (Map.Entry) it.next();
String k = (String) entry.getKey();
String v = (String) entry.getValue();
if (!"sign".equals(k) && null != v && !"".equals(v)) {
sb.append(k + "=" + v + "&");
}
}

sb.append("key=" + ConfigUtil.API_KEY);

// 算出摘要
String mysign = MD5Util.MD5Encode(sb.toString(), characterEncoding)
.toLowerCase();
String tenpaySign = ((String) packageParams.get("sign")).toLowerCase();

// System.out.println(tenpaySign + " " + mysign);
return tenpaySign.equals(mysign);
}

/**
* @Description：sign簽名
* @param characterEncoding
* 編碼格式
* @param parameters
* 請求參數
* @return
*/
public static String createSign(String characterEncoding,
SortedMap<Object, Object> parameters) {
// 簽名字符串
StringBuffer sb = new StringBuffer();
// 遍歷map集合
Set es = parameters.entrySet();
Iterator it = es.iterator();
while (it.hasNext()) {
Map.Entry entry = (Map.Entry) it.next();
String k = (String) entry.getKey();
Object v = entry.getValue();
if (null != v && !"".equals(v) && !"sign".equals(k)
&& !"key".equals(k)) {
sb.append(k + "=" + v + "&");
}
}
sb.append("key=" + ConfigUtil.API_KEY);
System.out.println(sb + "=================sign簽名字符串");
String sign = MD5Util.MD5Encode(sb.toString(), characterEncoding)
.toUpperCase();
return sign;
}

/**
* @Description：將請求參數轉換爲xml格式的string
* @param parameters
* 請求參數
* @return
*/
public static String getRequestXml(SortedMap<Object, Object> parameters) {
StringBuffer sb = new StringBuffer();
sb.append("<xml>");
Set es = parameters.entrySet();
Iterator it = es.iterator();
while (it.hasNext()) {
Map.Entry entry = (Map.Entry) it.next();
String k = (String) entry.getKey();
String v = (String) entry.getValue();
if ("attach".equalsIgnoreCase(k) || "body".equalsIgnoreCase(k)) {
sb.append("<" + k + ">" + "<![CDATA[" + v + "]]></" + k + ">");
} else {
sb.append("<" + k + ">" + v + "</" + k + ">");
}
}
sb.append("</xml>");
return sb.toString();
}

/**
* @Description：返回給微信的參數
* @param return_code
* 返回編碼
* @param return_msg
* 返回信息
* @return
*/
public static String setXML(String return_code, String return_msg) {
return "<xml><return_code><![CDATA[" + return_code
+ "]]></return_code><return_msg><![CDATA[" + return_msg
+ "]]></return_msg></xml>";
}

/**
* 發送https請求
*
* @param requestUrl
* 請求地址
* @param requestMethod
* 請求方式（GET、POST）
* @param outputStr
* 提交的數據
* @return 返回微信服務器響應的信息
*/
public static String httpsRequest(String requestUrl, String requestMethod,
String outputStr) {
try {
// 建立SSLContext對象，並使用咱們指定的信任管理器初始化
TrustManager[] tm = { new MyX509TrustManager() };
SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");
sslContext.init(null, tm, new java.security.SecureRandom());
// 從上述SSLContext對象中獲得SSLSocketFactory對象
SSLSocketFactory ssf = sslContext.getSocketFactory();
URL url = new URL(requestUrl);
HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
// conn.setSSLSocketFactory(ssf);
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setUseCaches(false);
// 設置請求方式（GET/POST）
conn.setRequestMethod(requestMethod);
conn.setRequestProperty("content-type",
"application/x-www-form-urlencoded");
// 當outputStr不爲null時向輸出流寫數據
if (null != outputStr) {
OutputStream outputStream = conn.getOutputStream();
// 注意編碼格式
outputStream.write(outputStr.getBytes("UTF-8"));
outputStream.close();
}
// 從輸入流讀取返回內容
InputStream inputStream = conn.getInputStream();
InputStreamReader inputStreamReader = new InputStreamReader(
inputStream, "UTF-8");
BufferedReader bufferedReader = new BufferedReader(
inputStreamReader);
String str = null;
StringBuffer buffer = new StringBuffer();
while ((str = bufferedReader.readLine()) != null) {
buffer.append(str);
}
// 釋放資源
bufferedReader.close();
inputStreamReader.close();
inputStream.close();
inputStream = null;
conn.disconnect();
return buffer.toString();
} catch (ConnectException ce) {
// log.error("鏈接超時：{}", ce);
} catch (Exception e) {
// log.error("https請求異常：{}", e);
}
return null;
}

/**
* 發送https請求
*
* @param requestUrl
* 請求地址
* @param requestMethod
* 請求方式（GET、POST）
* @param outputStr
* 提交的數據
* @return JSONObject(經過JSONObject.get(key)的方式獲取json對象的屬性值)
*/
public static JSONObject httpsRequest(String requestUrl,
String requestMethod) {
JSONObject jsonObject = null;
try {
// 建立SSLContext對象，並使用咱們指定的信任管理器初始化
TrustManager[] tm = { new MyX509TrustManager() };
SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");
sslContext.init(null, tm, new java.security.SecureRandom());
// 從上述SSLContext對象中獲得SSLSocketFactory對象
SSLSocketFactory ssf = sslContext.getSocketFactory();
URL url = new URL(requestUrl);
HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
// conn.setSSLSocketFactory(ssf);
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setUseCaches(false);
conn.setConnectTimeout(3000);
// 設置請求方式（GET/POST）
conn.setRequestMethod(requestMethod);
// conn.setRequestProperty("content-type",
// "application/x-www-form-urlencoded");
// 當outputStr不爲null時向輸出流寫數據
// 從輸入流讀取返回內容
InputStream inputStream = conn.getInputStream();
InputStreamReader inputStreamReader = new InputStreamReader(
inputStream, "UTF-8");
BufferedReader bufferedReader = new BufferedReader(
inputStreamReader);
String str = null;
StringBuffer buffer = new StringBuffer();
while ((str = bufferedReader.readLine()) != null) {
buffer.append(str);
}
// 釋放資源
bufferedReader.close();
inputStreamReader.close();
inputStream.close();
inputStream = null;
conn.disconnect();

jsonObject = JSONObject.parseObject(buffer.toString());
} catch (ConnectException ce) {
// log.error("鏈接超時：{}", ce);
} catch (Exception e) {
System.out.println(e);
// log.error("https請求異常：{}", e);
}
return jsonObject;
}

public static String urlEncodeUTF8(String source) {
String result = source;
try {
result = java.net.URLEncoder.encode(source, "utf-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return result;
}

/**
* 獲取ip地址
*
* @param request
* @return
*/
public static String getIpAddr(HttpServletRequest request) {
InetAddress addr = null;
try {
addr = InetAddress.getLocalHost();
} catch (UnknownHostException e) {
return request.getRemoteAddr();
}
byte[] ipAddr = addr.getAddress();
String ipAddrStr = "";
for (int i = 0; i < ipAddr.length; i++) {
if (i > 0) {
ipAddrStr += ".";
}
ipAddrStr += ipAddr[i] & 0xFF;
}
return ipAddrStr;
}
}

 

===============================================================================================================

 

 最後是java請求接口

/**
* 微信支付接口
*
* @param req
* @param resp
* @return 返回字符串給app由app調用微信支付功能
*/
@ResponseBody
@RequestMapping(value = "/wxPrePay", produces = "text/html;charset=UTF-8", method = { RequestMethod.GET })
public String wxPrePay(HttpServletRequest request,
HttpServletResponse response) {
String str = null;

// 金額單位轉換成元
int price100 = new BigDecimal(0.01).multiply(new BigDecimal(100))
.intValue();
if (price100 <= 0) {

return "付款金額錯誤";
}
// 設置回調地址-獲取當前的地址拼接回調地址
String url = request.getRequestURL().toString();
String domain = url.substring(0, url.length() - 13);
// 生產環境
String notify_url = domain + "wxNotify.html";
// 測試環境
// String notify_url =
// "http://1f504p5895.51mypc.cn/cia/app/wxNotify.html";

SortedMap<Object, Object> parameters = new TreeMap<Object, Object>();
parameters.put("appid", ConfigUtil.APPID);// appid
parameters.put("mch_id", ConfigUtil.MCH_ID);// 商戶id
parameters.put("nonce_str", PayCommonUtil.CreateNoncestr());// 隨機字符串
parameters.put("body", "購買測試");// 商品描述
parameters.put("out_trade_no", PayCommonUtil.CreateNoncestr(6)); // 訂單惟一id
parameters.put("fee_type", "CNY");// 支付方式
parameters.put("total_fee", String.valueOf(price100));// 總金額
parameters.put("spbill_create_ip", PayCommonUtil.getIpAddr(request));// 獲取ip地址
parameters.put("notify_url", notify_url);// 回調地址
parameters.put("trade_type", "APP");// 交易類型
// 設置簽名
String sign = PayCommonUtil.createSign("UTF-8", parameters);
parameters.put("sign", sign);
// 封裝請求參數成xml字符串
String requestXML = PayCommonUtil.getRequestXml(parameters);
// 調用統一下單接口返回prepay_id
String result = PayCommonUtil.httpsRequest(
ConfigUtil.UNIFIED_ORDER_URL, "POST", requestXML);
System.out.println("\n" + result);
try {
/**
* 統一下單接口返回正常的prepay_id，再按簽名規範從新生成簽名後，將數據傳輸給APP。參與簽名的字段名爲appId，
* partnerId
* ，prepayId，nonceStr，timeStamp，package。注意：package的值格式爲Sign=WXPay
**/
Map<String, String> map = XMLUtil.doXMLParse(result);

SortedMap<Object, Object> parameterMap2 = new TreeMap<Object, Object>();
parameterMap2.put("appid", ConfigUtil.APPID);
parameterMap2.put("partnerid", ConfigUtil.MCH_ID);
parameterMap2.put("prepayid", map.get("prepay_id"));
parameterMap2.put("package", "Sign=WXPay");
parameterMap2.put("noncestr", PayCommonUtil.CreateNoncestr());
// 原本生成的時間戳是13位，可是ios必須是10位，因此截取了一下
parameterMap2.put(
"timestamp",
Long.parseLong(String.valueOf(System.currentTimeMillis())
.toString().substring(0, 10)));
String sign2 = PayCommonUtil.createSign("UTF-8", parameterMap2);
parameterMap2.put("sign", sign2);

str = JSON.toJSONString(parameterMap2);

} catch (JDOMException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return str; }