微信现金红包接口demo(java)

话不多说直接上餐

主类

package com.yuwei.redpack.main;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Random;

import com.yuwei.redpack.sign.Signature;
import com.yuwei.redpack.util.Configure;
import com.yuwei.redpack.util.HttpsRequest;
import com.yuwei.redpack.util.RequestUtil;

public class CopyOfMain {

	
	public static void main(String[] args) throws Exception{
		initSDKConfiguration("","","","","");
		
		RedpackBean bean = new RedpackBean();
		bean.setNonce_str(RequestUtil.getRandomStringByLength(32));
		bean.setMch_billno("10位商户号"+new SimpleDateFormat("yyyyMMddHHmmssSSS").format(new Date())+new Random().nextInt(10));
		bean.setMch_id("商户号");
		bean.setWxappid("微信appid");
		bean.setSend_name("商户名称");
		bean.setRe_openid("接收用户openid");
		bean.setTotal_amount(111);//金额分
		bean.setTotal_num(1);//发送人数
		bean.setWishing("红包祝福语");
		bean.setClient_ip("活动名称");
		bean.setAct_name("java");
		bean.setRemark("备注");
		
		bean.setSign(Signature.getSign(bean));
		
		
		HttpsRequest https = new HttpsRequest();
		String rets = https.sendPost("https://api.mch.weixin.qq.com/mmpaymkttransfers/sendredpack", bean);
        System.out.println(rets);
	}
	
	
	/**
	 * 
	 * @param key API密钥
	 * @param mchID 商户id
	 * @param wxappid 公众号id
	 * @param certLocalPath 证书路径
	 * @param certPassword 证书密码 
	 */
	private static void initSDKConfiguration(String key, String mchID, String wxappid, String certLocalPath, String certPassword){
		Configure.setKey(key);
		Configure.setMchID(mchID);
		Configure.setWxappid(wxappid);
		Configure.setCertLocalPath(certLocalPath);
		Configure.setCertPassword(certPassword);
	}
}

请求类

package com.yuwei.redpack.main;

public class RedpackBean {

	private String nonce_str;
	private String sign;
	private String mch_billno;
	private String mch_id;
	private String wxappid;
	private String send_name;
	private String re_openid;
	private int total_amount;
	private int total_num;
	private String wishing;
	private String client_ip;
	private String act_name;
	private String remark;
	public String getNonce_str() {
		return nonce_str;
	}
	public void setNonce_str(String nonceStr) {
		nonce_str = nonceStr;
	}
	public String getSign() {
		return sign;
	}
	public void setSign(String sign) {
		this.sign = sign;
	}
	public String getMch_billno() {
		return mch_billno;
	}
	public void setMch_billno(String mchBillno) {
		mch_billno = mchBillno;
	}
	public String getMch_id() {
		return mch_id;
	}
	public void setMch_id(String mchId) {
		mch_id = mchId;
	}
	public String getWxappid() {
		return wxappid;
	}
	public void setWxappid(String wxappid) {
		this.wxappid = wxappid;
	}
	public String getSend_name() {
		return send_name;
	}
	public void setSend_name(String sendName) {
		send_name = sendName;
	}
	public String getRe_openid() {
		return re_openid;
	}
	public void setRe_openid(String reOpenid) {
		re_openid = reOpenid;
	}
	public int getTotal_amount() {
		return total_amount;
	}
	public void setTotal_amount(int totalAmount) {
		total_amount = totalAmount;
	}
	public int getTotal_num() {
		return total_num;
	}
	public void setTotal_num(int totalNum) {
		total_num = totalNum;
	}
	public String getWishing() {
		return wishing;
	}
	public void setWishing(String wishing) {
		this.wishing = wishing;
	}
	public String getClient_ip() {
		return client_ip;
	}
	public void setClient_ip(String clientIp) {
		client_ip = clientIp;
	}
	public String getAct_name() {
		return act_name;
	}
	public void setAct_name(String actName) {
		act_name = actName;
	}
	public String getRemark() {
		return remark;
	}
	public void setRemark(String remark) {
		this.remark = remark;
	}
	
}

知道各位对sign比较头痛，我上方法

public static String getSign(Object o) throws IllegalAccessException {
        ArrayList list = new ArrayList();
        Class cls = o.getClass();
        Field[] fields = cls.getDeclaredFields();
        for (Field f : fields) {
            f.setAccessible(true);
            if (f.get(o) != null && f.get(o) != "") {
                list.add(f.getName() + "=" + f.get(o) + "&");
            }
        }
        int size = list.size();
        String [] arrayToSort = list.toArray(new String[size]);
        Arrays.sort(arrayToSort, String.CASE_INSENSITIVE_ORDER);
        StringBuilder sb = new StringBuilder();
        for(int i = 0; i < size; i ++) {
            sb.append(arrayToSort[i]);
        }
        String result = sb.toString();
        result += "key=" + Configure.getKey();
        result = MD5.MD5Encode(result).toUpperCase();
        return result;
    }

用java反射的，适合所有class

祝各位成功！