微信APP支付Java代码_JAVA教程

本文实例为大家分享了java微信APP支付代码，供大家参考，具体内容如下

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

									import java.io.IOException;

									import java.io.UnsupportedEncodingException;

									import java.util.Random;

									import org.apache.http.ParseException;

									import org.apache.http.client.ClientProtocolException;

									import org.apache.http.client.methods.HttpPost;

									import org.apache.http.entity.StringEntity;

									import org.apache.http.impl.client.DefaultHttpClient;

									import org.apache.http.util.EntityUtils;

									import org.json.JSONArray;

									import org.json.JSONML;

									import org.json.JSONObject;

									public class Test {

									 private static final String appid = "wx0378bf81abfe3d26";//自己设置

									 private static final int mch_id = 1252196606;//自己设置

									 private static final String api_key = "b8b9c2bbe92d57cc38fde49745056167";//自己设置

									 private static final String notify_url = "http://www.xxx.com/weixin_notify_url.jsp";//自己设置

									 private static final String trade_type = "APP";//

									 public static void main(String[] args) {

									 postToWeChat("5455545", "test", 0.01);

									 postToWeChat("5455545", "中文", 0.01);//会失败

									 }

									 /**

									 * 提交到微信

									 * 

									 * @param out_trade_no

									 *   自己系统的订单号

									 * @param body

									 *   标题

									 * @param money

									 *   金额

									 * @return

									 */

									 private static JSONObject postToWeChat(String out_trade_no, String body, double money) {

									 StringBuilder xml = new StringBuilder();

									 String nonce_str = getRandomString(32);

									 String ip = "127.0.0.1";// 客户端IP自己处理

									 JSONObject jso = new JSONObject();

									 String prepay_id = "", sign = "";

									 try {

									 String weixinMoney = new java.text.DecimalFormat("#").format(money * 100);// 微信是以分为单位的所以要乘以100

									 xml.append("appid=").append(appid).append("&body=").append(new String(body.getBytes("UTF-8"), "utf-8"));

									 xml.append("&mch_id=").append(mch_id).append("&nonce_str=").append(nonce_str);

									 xml.append("¬ify_url=").append(notify_url).append("&out_trade_no=").append(out_trade_no).append("&spbill_create_ip=").append(ip);

									 xml.append("&total_fee=").append(weixinMoney).append("&trade_type=").append(trade_type).append("&key=").append(api_key);

									 sign = new Util().MD5Purity(xml.toString()).toUpperCase();// MD5加密签名加密类自己解决就不放上来了

									 xml.delete(0, xml.length());

									 xml.append("<xml>");

									 xml.append(" <appid>").append(appid).append("</appid>");

									 xml.append(" <body>").append(body).append("</body>");

									 xml.append(" <mch_id>").append(mch_id).append("</mch_id>");

									 xml.append(" <nonce_str>").append(nonce_str).append("</nonce_str>");

									 xml.append(" <notify_url>").append(notify_url).append("</notify_url>");

									 xml.append(" <out_trade_no>").append(out_trade_no).append("</out_trade_no>");

									 xml.append(" <spbill_create_ip>").append(ip).append("</spbill_create_ip>");

									 xml.append(" <total_fee>").append(weixinMoney).append("</total_fee>");

									 xml.append(" <trade_type>").append(trade_type).append("</trade_type>");

									 xml.append(" <sign>").append(sign).append("</sign>");

									 xml.append("</xml>");

									 HttpPost post = new HttpPost("https://api.mch.weixin.qq.com/pay/unifiedorder");

									 StringEntity entity = new StringEntity(xml.toString(), "UTF-8");

									 entity.setContentEncoding("utf-8");

									 entity.setContentType("text/xml");

									 post.setEntity(entity);

									 JSONArray childNodes = JSONML.toJSONObject(EntityUtils.toString(new DefaultHttpClient().execute(post).getEntity(), "utf-8")).getJSONArray(

									  "childNodes");

									 System.out.println(childNodes);

									 int len = childNodes.length() - 1;

									 for (int i = len; i > -1; i--) {

									 JSONObject js = childNodes.getJSONObject(i);

									 if (js.get("tagName").equals("prepay_id")) {

									  prepay_id = js.getJSONArray("childNodes").getString(0);

									  break;

									 }

									 }

									 } catch (UnsupportedEncodingException e) {

									 e.printStackTrace();

									 } catch (ParseException e) {

									 e.printStackTrace();

									 } catch (ClientProtocolException e) {

									 e.printStackTrace();

									 } catch (IOException e) {

									 e.printStackTrace();

									 }

									 jso.put("sign", sign);

									 jso.put("appid", appid);

									 jso.put("noncestr", nonce_str);

									 jso.put("package", "Sign=WXPay");

									 jso.put("partnerid", mch_id);

									 jso.put("prepayid", prepay_id);

									 jso.put("timestamp", System.currentTimeMillis());

									 return jso;

									 }

									 /**

									 * 表示生成字符串的长度

									 * 

									 * @param length

									 * @return

									 */

									 private static String getRandomString(int length) {

									 String base = "abcdefghijklmnopqrstuvwxyz0123456789";

									 Random random = new Random();

									 StringBuffer sb = new StringBuffer();

									 for (int i = 0; i < length; i++) {

									 int number = random.nextInt(base.length());

									 sb.append(base.charAt(number));

									 }

									 return sb.toString();

									 }

									}