java微信-企业付款api

最近有弄服务号的现金红包和企业付款，和微信支付 弄完之后发现其实这些基本都差不多.

所有我这里就把微信企业付款记录一样

首先  还是先看一下文档  https://pay.weixin.qq.com/wiki/doc/api/tools/mch_pay.php?chapter=14_2  点击打开链接

在文档中我们可以看到，企业付款需要调用的url和所有参数的说明，这里的话就需要自己去看去理解了。

如果要使用 现金红包和企业付款 要先去开通在产品中心里面 就要 点击进去开通就行了 ，顺便填写一下机器ip地址

之后我要提一下的是机器ip是外网ip，如果是在本地测试的就要注意一下  然后保持一致就行了 

这里的话还有个最主要的证书需要下载，我们可以下载到D盘cert目录下 D:/cert      这个证书的下载 只要登陆微信商户平台 API安全  就可以了 看自己是什么语言就下载什么证书，这里文档有说明 

前面的准备工作都ok 之后就是写代码了

建一个微信需要的企业付款参数 transfers 类 

public class Transfers {private String mch_appid;// 公众账号private String mchid;// 商户号private String nonce_str;// 随机字符串private String sign;// 签名private String partner_trade_no;// 商户订单号private String openid;// 用户openid//校验用户姓名选项  NO_CHECK：不校验真实姓名 private String check_name;private int amount;// 付款金额private String desc;// 企业付款描述信息private String spbill_create_ip;// 调用接口的机器Ip地址public String getMch_appid() {return mch_appid;}public void setMch_appid(String mch_appid) {this.mch_appid = mch_appid;}public String getMchid() {return mchid;}public void setMchid(String mchid) {this.mchid = mchid;}public String getNonce_str() {return nonce_str;}public void setNonce_str(String nonce_str) {this.nonce_str = nonce_str;}public String getSign() {return sign;}public void setSign(String sign) {this.sign = sign;}public String getPartner_trade_no() {return partner_trade_no;}public void setPartner_trade_no(String partner_trade_no) {this.partner_trade_no = partner_trade_no;}public String getOpenid() {return openid;}public void setOpenid(String openid) {this.openid = openid;}public String getCheck_name() {return check_name;}public void setCheck_name(String check_name) {this.check_name = check_name;}public int getAmount() {return amount;}public void setAmount(int amount) {this.amount = amount;}public String getDesc() {return desc;}public void setDesc(String desc) {this.desc = desc;}public String getSpbill_create_ip() {return spbill_create_ip;}public void setSpbill_create_ip(String spbill_create_ip) {this.spbill_create_ip = spbill_create_ip;}    }

之后就是给 这些参数赋值 

@Autowiredprivate XMLUtil xmlUtil;

import java.io.BufferedReader;import java.io.File;import java.io.FileInputStream;import java.io.IOException;import java.io.InputStreamReader;import java.math.BigDecimal;import java.security.KeyStore;import java.sql.Timestamp;import java.text.SimpleDateFormat;import java.util.Date;import java.util.HashMap;import java.util.List;import java.util.Map;import java.util.Random;import java.util.UUID;import javax.net.ssl.SSLContext;import org.apache.commons.codec.digest.DigestUtils;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.entity.StringEntity;import org.apache.http.impl.client.CloseableHttpClient;import org.apache.http.impl.client.HttpClients;import org.apache.http.ssl.SSLContexts;import org.apache.http.util.EntityUtils;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Service;

上面是导入的包 下面就是给参数配值了

private void redPackets(Integer withdrawId, String openId) throws Exception {int total=100;int amount = (int) (total*100);Transfers transfers=new Transfers();String nonce = UUID.randomUUID().toString().substring(0, 30);SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");String time = df.format(new Date());Random ne=new Random();int guid=ne.nextInt(9999-1000+1)+1000;transfers.setMch_appid(APPID);// 自己的公众账号transfers.setMchid(partnerId);//自己的 商户号transfers.setNonce_str(nonce);// 随机字符串transfers.setOpenid(openId);// 用户openIdtransfers.setCheck_name("NO_CHECK");// 校验用户姓名选项transfers.setAmount(amount);// 付款金额transfers.setDesc("微信企业付款");// 企业付款描述信息transfers.setSpbill_create_ip("120.236.82.202");// 调用接口的机器Ip地址transfers.setPartner_trade_no(WxConfig.partnerId+time+guid);// 商户订单号String sign = createSendRedPackOrderSign(transfers);transfers.setSign(sign);// 签名xmlUtil.xstream().alias("xml", transfers.getClass());String xml = xmlUtil.xstream().toXML(transfers);String sendEedPackUrl="https://api.mch.weixin.qq.com/mmpaymkttransfers/promotion/transfers";String response = ssl(sendEedPackUrl,xml);Map<String, String> responseMap = xmlUtil.parseXml(response);String return_msg = responseMap.get("return_msg");System.out.println(return_msg);}

这里就是根据上面的内容生成签名 sign 这里文档有说明 这里要注意的是去，签名要按照 ASCII码从小到大排序（字典序）

public String createSendRedPackOrderSign(Transfers transfers){        StringBuffer sign = new StringBuffer();        sign.append("mch_appid=").append(transfers.getMch_appid());        sign.append("&mchid=").append(transfers.getMchid());        sign.append("&nonce_str=").append(transfers.getNonce_str());        sign.append("&partner_trade_no=").append(transfers.getPartner_trade_no());        sign.append("&openid=").append(transfers.getOpenid());        sign.append("&check_name=").append(transfers.getCheck_name());        sign.append("&amount=").append(transfers.getAmount());        sign.append("&desc=").append(transfers.getDesc());        sign.append("&spbill_create_ip=").append(transfers.getSpbill_create_ip());        sign.append("&key=").append(WxConfig.partnerKey);               return  DigestUtils.md5Hex(sign.toString()).toUpperCase();    }

然后就是xmlutil类了 我是在网上大神博客找的

import java.io.ByteArrayInputStream;import java.io.InputStream;import java.io.Writer;import java.util.HashMap;import java.util.List;import java.util.Map;import org.dom4j.Document;import org.dom4j.Element;import org.dom4j.io.SAXReader;import org.springframework.stereotype.Component;import com.thoughtworks.xstream.XStream;import com.thoughtworks.xstream.core.util.QuickWriter;import com.thoughtworks.xstream.io.HierarchicalStreamWriter;import com.thoughtworks.xstream.io.naming.NoNameCoder;import com.thoughtworks.xstream.io.xml.DomDriver;import com.thoughtworks.xstream.io.xml.PrettyPrintWriter;import com.thoughtworks.xstream.io.xml.XmlFriendlyNameCoder;import com.thoughtworks.xstream.io.xml.XppDriver;/** * XML工具包 *  * XMLUtil *  * @author zdl * @version 1.0.0 * */@Componentpublic class XMLUtil {/** * 解析字符串（XML） *  * @param request * @return * @throws Exception */@SuppressWarnings("unchecked")public Map<String, String> parseXml(String msg) throws Exception {// 将解析结果存储在HashMap中Map<String, String> map = new HashMap<String, String>();// 从request中取得输入流InputStream inputStream = new ByteArrayInputStream(msg.getBytes("UTF-8"));// 读取输入流SAXReader reader = new SAXReader();Document document = reader.read(inputStream);// 得到xml根元素Element root = document.getRootElement();// 得到根元素的所有子节点List<Element> elementList = root.elements();// 遍历所有子节点for (Element e : elementList)map.put(e.getName(), e.getText());// 释放资源inputStream.close();inputStream = null;return map;}/** * 扩展xstream，使其支持CDATA块 */private XStream xstream = new XStream(new XppDriver(new NoNameCoder()) {@Overridepublic HierarchicalStreamWriter createWriter(Writer out) {return new PrettyPrintWriter(out) {// 对所有xml节点的转换都增加CDATA标记boolean cdata = true;@Override@SuppressWarnings("rawtypes")public void startNode(String name, Class clazz) {super.startNode(name, clazz);}@Overridepublic String encodeNode(String name) {return name;}@Overrideprotected void writeText(QuickWriter writer, String text) {if (cdata) {writer.write("<![CDATA[");writer.write(text);writer.write("]]>");} else {writer.write(text);}}};}});private XStream inclueUnderlineXstream = new XStream(new DomDriver(null,new XmlFriendlyNameCoder("_-", "_")));public XStream getXstreamInclueUnderline() {return inclueUnderlineXstream;}public XStream xstream() {return xstream;}}

如何就是ssl方法 

private String ssl(String url,String data){        StringBuffer message = new StringBuffer();        try {            KeyStore keyStore  = KeyStore.getInstance("PKCS12");            FileInputStream instream = new FileInputStream(new File("D:/cert/apiclient_cert.p12"));            keyStore.load(instream, WxConfig.partnerId.toCharArray());            // Trust own CA and all self-signed certs            SSLContext sslcontext = SSLContexts.custom()                    .loadKeyMaterial(keyStore, WxConfig.partnerId.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();            HttpPost httpost = new HttpPost(url);            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) ");            httpost.setEntity(new StringEntity(data, "UTF-8"));            //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(),"UTF-8"));                    String text;                    while ((text = bufferedReader.readLine()) != null) {                        message.append(text);                    }                }                EntityUtils.consume(entity);            } catch (IOException e) {                e.printStackTrace();            } finally {                response.close();            }        } catch (Exception e1) {            e1.printStackTrace();        }         return message.toString();    }

如果还有什么不懂的可以去看 这位大师的博客，我也是根据他的来写的 ，顺便说一下是java微信红包的！   

http://blog.csdn.net/jrainbow/article/details/50266391