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微信APP付出Java代碼

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本文實例為年夜家分享了java微信APP付出代碼，供年夜家參考，詳細內容以下

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";//本身設置
 private static final int mch_id = 1252196606;//本身設置
 private static final String api_key = "b8b9c2bbe92d57cc38fde49745056167";//本身設置
 private static final String notify_url = "http://www.xxx.com/weixin_notify_url.jsp";//本身設置
 private static final String trade_type = "APP";//

 public static void main(String[] args) {
 postToWeChat("5455545", "test", 0.01);
 postToWeChat("5455545", "中文", 0.01);//會掉敗
 }

 /**
 * 提交到微信
 * 
 * @param out_trade_no
 *      本身體系的定單號
 * @param body
 *      題目
 * @param money
 *      金額
 * @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";// 客戶端IP本身處置
 JSONObject jso = new JSONObject();
 String prepay_id = "", sign = "";
 try {
  String weixinMoney = new java.text.DecimalFormat("#").format(money * 100);// 微信是以分為單元的所以要乘以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加密簽名加密類本身處理就不放下去了
  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;
 }

 /**
 * 表現生成字符串的長度
 * 
 * @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();
 }
}

以上就是本文的全體內容，願望對年夜家進修java法式設計有所贊助。

關於JAVA