Java使用微信支付-发起统一下单支付接口

来源：互联网发布：linux oracle关闭监听编辑：程序博客网时间：2024/06/05 10:37
package com.tenpay.util;import java.io.BufferedReader;import java.io.ByteArrayInputStream;import java.io.File;import java.io.FileInputStream;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.net.ConnectException;import java.net.HttpURLConnection;import java.net.InetAddress;import java.net.URL;import java.security.KeyStore;import java.util.Date;import java.util.HashMap;import java.util.Iterator;import java.util.List;import java.util.Map;import javax.net.ssl.SSLContext;import org.apache.http.Consts;import org.apache.http.HttpEntity;import org.apache.http.client.methods.CloseableHttpResponse;import org.apache.http.client.methods.HttpPost;import org.apache.http.conn.ssl.SSLConnectionSocketFactory;import org.apache.http.conn.ssl.SSLContexts;import org.apache.http.entity.StringEntity;import org.apache.http.impl.client.CloseableHttpClient;import org.apache.http.impl.client.HttpClients;import org.apache.http.util.EntityUtils;import org.glassfish.jersey.internal.util.Base64;import org.jdom.Document;import org.jdom.Element;import org.jdom.input.SAXBuilder;import com.zhiweism.util.MD5;import com.zhiweism.util.Util;/* * 用户发起统一下单请求 * 作者：董志平 */public class WXRequestUtil {public static void main(String[] args) {SendPayment("苹果","20170106113324",1,"1");}/* * 发起支付请求 * body商品描述 * out_trade_no订单号 * total_fee订单金额单位  元 * product_id商品ID */public static Map<String,String> SendPayment(String body,String out_trade_no,double total_fee,String product_id){String url = "https://api.mch.weixin.qq.com/pay/unifiedorder";String xml = WXParamGenerate(body,out_trade_no,total_fee,product_id);String res = httpsRequest(url,"POST",xml);Map<String,String> data = null;try {data = doXMLParse(res);} catch (Exception e) {}return data;}public static String NonceStr(){String res = Base64.encodeAsString(Math.random()+"::"+new Date().toString()).substring(0, 30);return res;} public static String GetIp() {        InetAddress ia=null;        try {            ia=InetAddress.getLocalHost();            String localip=ia.getHostAddress();            return localip;        } catch (Exception e) {            return null;        }    }  public static String GetSign(Map<String,String> param){String StringA =  Util.formatUrlMap(param, false, false);String stringSignTemp = MD5.md5(StringA+"&key="+ConstantUtil.API_KEY).toUpperCase();return stringSignTemp; }  //Map转xml数据 public static String GetMapToXML(Map<String,String> param){ StringBuffer sb = new StringBuffer(); sb.append("<xml>"); for (Map.Entry<String,String> entry : param.entrySet()) {     sb.append("<"+ entry.getKey() +">");    sb.append(entry.getValue());    sb.append("</"+ entry.getKey() +">");}   sb.append("</xml>"); return sb.toString(); }//微信统一下单参数设置public static String WXParamGenerate(String description,String out_trade_no,double total_fee,String product_id){int fee = (int)(total_fee * 100.00);Map<String,String> param = new HashMap<String,String>();param.put("appid", ConstantUtil.APP_ID);param.put("mch_id", ConstantUtil.MCH_ID);param.put("nonce_str",NonceStr());param.put("body", description);param.put("out_trade_no",out_trade_no);param.put("total_fee", fee+"");param.put("spbill_create_ip", GetIp());param.put("notify_url", ConstantUtil.WEIXIN_NOTIFY);param.put("trade_type", "NATIVE");param.put("product_id", product_id+"");String sign = GetSign(param);param.put("sign", sign);return GetMapToXML(param);}//发起微信支付请求    public static String httpsRequest(String requestUrl, String requestMethod, String outputStr) {        try {            URL url = new URL(requestUrl);            HttpURLConnection conn = (HttpURLConnection) url.openConnection();                      conn.setDoOutput(true);            conn.setDoInput(true);            conn.setUseCaches(false);            // 设置请求方式（GET/POST）            conn.setRequestMethod(requestMethod);            conn.setRequestProperty("content-type", "application/x-www-form-urlencoded");            // 当outputStr不为null时向输出流写数据            if (null != outputStr) {                OutputStream outputStream = conn.getOutputStream();                // 注意编码格式                outputStream.write(outputStr.getBytes("UTF-8"));                outputStream.close();            }            // 从输入流读取返回内容            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);            }            // 释放资源            bufferedReader.close();            inputStreamReader.close();            inputStream.close();            inputStream = null;            conn.disconnect();            return buffer.toString();        } catch (ConnectException ce) {            System.out.println("连接超时：{}"+ ce);        } catch (Exception e) {            System.out.println("https请求异常：{}"+ e);        }        return null;      }            //退款的请求方法      public static String httpsRequest2(String requestUrl, String requestMethod, String outputStr) throws Exception {            KeyStore keyStore  = KeyStore.getInstance("PKCS12");            StringBuilder res = new StringBuilder("");            FileInputStream instream = new FileInputStream(new File("/home/apiclient_cert.p12"));            try {                keyStore.load(instream, "".toCharArray());            } finally {                instream.close();            }            // Trust own CA and all self-signed certs            SSLContext sslcontext = SSLContexts.custom()                    .loadKeyMaterial(keyStore, "1313329201".toCharArray())                    .build();            // Allow TLSv1 protocol only            SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(                    sslcontext,                    new String[] { "TLSv1" },                    null,                    SSLConnectionSocketFactory.BROWSER_COMPATIBLE_HOSTNAME_VERIFIER);            CloseableHttpClient httpclient = HttpClients.custom()                    .setSSLSocketFactory(sslsf)                    .build();            try {                HttpPost httpost = new HttpPost("https://api.mch.weixin.qq.com/secapi/pay/refund");                httpost.addHeader("Connection", "keep-alive");                httpost.addHeader("Accept", "*/*");                httpost.addHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");                httpost.addHeader("Host", "api.mch.weixin.qq.com");                httpost.addHeader("X-Requested-With", "XMLHttpRequest");                httpost.addHeader("Cache-Control", "max-age=0");                httpost.addHeader("User-Agent", "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0) ");                 StringEntity entity2 = new StringEntity(outputStr ,Consts.UTF_8);                 httpost.setEntity(entity2);                System.out.println("executing request" + httpost.getRequestLine());                CloseableHttpResponse response = httpclient.execute(httpost);                               try {                    HttpEntity entity = response.getEntity();                                        System.out.println("----------------------------------------");                    System.out.println(response.getStatusLine());                    if (entity != null) {                        System.out.println("Response content length: " + entity.getContentLength());                        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(entity.getContent()));                        String text = "";                      res.append(text);                        while ((text = bufferedReader.readLine()) != null) {                            res.append(text);                            System.out.println(text);                        }                                           }                    EntityUtils.consume(entity);                } finally {                    response.close();                }            } finally {                httpclient.close();            }            return  res.toString();                  }          //xml解析      public static Map<String, String> doXMLParse(String strxml) throws Exception {            strxml = strxml.replaceFirst("encoding=\".*\"", "encoding=\"UTF-8\"");            if(null == strxml || "".equals(strxml)) {                return null;            }                        Map<String,String> m = new HashMap<String,String>();             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 = getChildrenText(children);                }                                m.put(k, v);            }                        //关闭流            in.close();             return m;      }            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(getChildrenText(list));                    }                    sb.append(value);                    sb.append("</" + name + ">");                }            }             return sb.toString();      }}
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