首先微信和支付寶的流程都是前臺先拿到code，然後微信是通過code拿到用戶appid執行轉賬，支付寶是通過code拿到userid執行轉賬。
微信需要開通企業提現到零錢的業務，支付寶需要開通單筆資金轉賬到支付寶所對應的業務，如果要獲取用戶信息的話，還要開通會員信息功能。
微信對應的開發文檔：https://pay.weixin.qq.com/wiki/doc/api/tools/mch_pay.php?chapter=14_1
支付寶對應的開發文檔：https://docs.open.alipay.com/api_28/alipay.fund.trans.toaccount.transfer/
下面是支付寶提現到用戶支付寶功能代碼
public Welipayorder authtoken(String code){
ReturnResult result = new ReturnResult();
// 公鑰簽名
try {
AlipayClient alipayClient = new DefaultAlipayClient("https://openapi.alipay.com/gateway.do", AlipayConfig.APP_ID,AlipayConfig.APP_PRIVATE_KEY, AlipayConfig.FORMAT, AlipayConfig.CHARSET, AlipayConfig.ALIPAY_PUBLIC_KEY, "RSA2");
AlipaySystemOauthTokenRequest request = new AlipaySystemOauthTokenRequest();
System.out.println(code);
request.setCode(code);
request.setGrantType("authorization_code");
try {
System.out.println(request);
AlipaySystemOauthTokenResponse oauthTokenResponse = alipayClient.execute(request);
System.out.println(oauthTokenResponse.getBody());
String out_bi_zno = trandno();
weli.setOutbizno(out_bi_zno);
AlipayFundTransToaccountTransferRequest request1 = new AlipayFundTransToaccountTransferRequest();
System.out.println("payee_account========"+oauthTokenResponse.getAlipayUserId());
request1.setBizContent("{" +
"\"out_biz_no\""+":\""+ weli.getOutbizno() +"\"," +
"\"payee_type\":\"ALIPAY_USERID\"," +
"\"payee_account\""+":\""+ oauthTokenResponse.getUserId()+"\"," +
"\"amount\":\"0.1\"," +
"\"payer_show_name\":\"毛毛的\"," +
// "\"payee_real_name\":\"毛俊剛\"," +
"\"remark\":\"app提現到用戶支付寶\"" +
" }");
System.out.println(request1.toString());
AlipayFundTransToaccountTransferResponse response = alipayClient.execute(request1);
if(response.isSuccess()){
System.out.println("調用成功");
} else {
System.out.println("調用失敗");
}
} catch (AlipayApiException e) {
//處理異常
e.printStackTrace();
}
} catch (Exception e) {
// TODO: handle exception
}
return weli;
}
public String trandno(){
/**---------------開始生成訂單號 ------------------------**/
//當前時間 yyyyMMddHHmmss
String currTime = TenpayUtil.getCurrTime();
//8位日期
String strTime = currTime.substring(8, currTime.length());
//四位隨機數
String strRandom = TenpayUtil.buildRandom(4) + "";
//10位序列號,可以自行調整
String strReq = strTime + strRandom;
//訂單號，此處用時間加隨機數生成,只要保持全局唯一就行
String out_trade_no = strReq;
out_trade_no = String.valueOf(UUID.next());
return out_trade_no;
}
由於微信封裝的比較多，所以關於 微信的提現方法更多內容，可百度雲盤下載關於微信提現項目源碼：https://pan.baidu.com/s/1lV8DYen7I6HW-tQVYfihJw
注意：微信提現讀取證書路徑windows絕對路徑爲：D:\\demo\\apiclient_cert.p12,如果在linux上面則路徑爲：/usr/demo/
apiclient_cert.p12。window用"\\"標識目錄分隔，二linux則用"/"標識目錄分隔。