<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>alipay-sdk-java</artifactId>
    <version>20161129201425</version>
    <scope>system</scope>
    <systemPath>${project.basedir}/lib/alipay-sdk-java20161129201425.jar</systemPath>
</dependency>
    

<groupId>org.apache.maven.plugins</groupId>  
<artifactId>maven-war-plugin</artifactId>  
<configuration>  
    <webResources>  
        <resource>  
            <directory>${project.basedir}/lib</directory>  
            <targetPath>WEB-INF/lib</targetPath>  
            <filtering>false</filtering>  
            <includes>  
                <include>**/*.jar</include>  
            </includes>  
        </resource>  
    </webResources>  
</configuration>  
<version>2.1.1</version>  

　　1、APP_ID 使用沙箱模式中的APP_ID.
　　2、APP_PRIVATE_KEY ALIPAY_PUBLIC_KEY 使用你之前保存的“商户私钥”和支付宝给你生成的“支付宝公钥”
　　3、CHARSET 默认使用UTF-8

AlipayClient alipayClient = new DefaultAlipayClient("https://openapi.alipay.com/gateway.do",APP_ID,APP_PRIVATE_KEY,"json",CHARSET,ALIPAY_PUBLIC_KEY);

#==================================公司测试账户线下环境====================================
#应用ID,您的APPID，收款账号既是您的APPID对应支付宝账号
ali_app_id=*********
#商户私钥（应用私钥），您的PKCS8格式RSA2私钥
ali_merchant_private_key=*******
#商户公钥（应用公钥）
ali_merchant_public_key=*******
#支付宝公钥，对应APPID下的支付宝公钥。
ali_alipay_public_key=**********
#沙箱账号：uinrgn0730@sandbox.com   沙箱登录/支付密码：111111

#服务器异步通知页面路径
ali_notify_url=*******
#页面跳转同步通知页面路径
ali_return_url=******
#用户付款中途退出返回商户网站的地址
ali_quit_url=******

#签名方式
ali_sign_type=RSA2
#字符编码格式
ali_charset=utf-8
#支付宝网关（注意这是沙箱的网关，正式的网关为：https://openapi.alipay.com/gateway.do）
ali_gatewayUrl=https://openapi.alipaydev.com/gateway.do
#角色身份
ali_pid=2088621954885028
#过期时间
ali_timeout_express=30m

package com.example.learn.config.properties;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.PropertySource;
import org.springframework.stereotype.Component;

@Component
@PropertySource("classpath:/alipay.properties")
public class AliPayProperties {

    /**
     * 应用ID
     */
    @Value("${ali_app_id}")
    private String ali_app_id;
    /**
     * 商户私钥
     */
    @Value("${ali_merchant_private_key}")
    private String ali_merchant_private_key;
    /**
     * 商户公钥
     */
    @Value("${ali_merchant_public_key}")
    private String ali_merchant_public_key;
    /**
     * 支付宝公钥
     */
    @Value("${ali_alipay_public_key}")
    private String ali_alipay_public_key;
    
    /**
     * 服务器异步通知页面路径
     */
    @Value("${ali_notify_url}")
    private String ali_notify_url;
    /**
     * 页面跳转同步通知页面路径
     */
    @Value("${ali_return_url}")
    private String ali_return_url;
    /**
     * 用户付款中途退出返回商户网站的地址
     */
    @Value("${ali_quit_url}")
    private String ali_quit_url;
    
    
    /**
     * 签名方式
     */
    @Value("${ali_sign_type}")
    private String ali_sign_type;
    /**
     * 字符编码格式
     */
    @Value("${ali_charset}")
    private String ali_charset;
    /**
     * 支付宝网关
     */
    @Value("${ali_gatewayUrl}")
    private String ali_gatewayUrl;
    /**
     * 角色身份
     */
    @Value("${ali_pid}")
    private String ali_pid;
    /**
     * 过期时间
     */
    @Value("${ali_timeout_express}")
    private String ali_timeout_express;
    public String getAli_app_id() {
        return ali_app_id;
    }
    public String getAli_merchant_private_key() {
        return ali_merchant_private_key;
    }
    public String getAli_merchant_public_key() {
        return ali_merchant_public_key;
    }
    public String getAli_alipay_public_key() {
        return ali_alipay_public_key;
    }
    public String getAli_notify_url() {
        return ali_notify_url;
    }
    public String getAli_return_url() {
        return ali_return_url;
    }
    public String getAli_quit_url() {
        return ali_quit_url;
    }
    public String getAli_sign_type() {
        return ali_sign_type;
    }
    public String getAli_charset() {
        return ali_charset;
    }
    public String getAli_gatewayUrl() {
        return ali_gatewayUrl;
    }
    public String getAli_pid() {
        return ali_pid;
    }
    public String getAli_timeout_express() {
        return ali_timeout_express;
    }
    public void setAli_app_id(String ali_app_id) {
        this.ali_app_id = ali_app_id;
    }
    public void setAli_merchant_private_key(String ali_merchant_private_key) {
        this.ali_merchant_private_key = ali_merchant_private_key;
    }
    public void setAli_merchant_public_key(String ali_merchant_public_key) {
        this.ali_merchant_public_key = ali_merchant_public_key;
    }
    public void setAli_alipay_public_key(String ali_alipay_public_key) {
        this.ali_alipay_public_key = ali_alipay_public_key;
    }
    public void setAli_notify_url(String ali_notify_url) {
        this.ali_notify_url = ali_notify_url;
    }
    public void setAli_return_url(String ali_return_url) {
        this.ali_return_url = ali_return_url;
    }
    public void setAli_quit_url(String ali_quit_url) {
        this.ali_quit_url = ali_quit_url;
    }
    public void setAli_sign_type(String ali_sign_type) {
        this.ali_sign_type = ali_sign_type;
    }
    public void setAli_charset(String ali_charset) {
        this.ali_charset = ali_charset;
    }
    public void setAli_gatewayUrl(String ali_gatewayUrl) {
        this.ali_gatewayUrl = ali_gatewayUrl;
    }
    public void setAli_pid(String ali_pid) {
        this.ali_pid = ali_pid;
    }
    public void setAli_timeout_express(String ali_timeout_express) {
        this.ali_timeout_express = ali_timeout_express;
    }
    @Override
    public String toString() {
        return "AliPayProperties [ali_app_id=" + ali_app_id + ", ali_merchant_private_key=" + ali_merchant_private_key
                + ", ali_merchant_public_key=" + ali_merchant_public_key + ", ali_alipay_public_key="
                + ali_alipay_public_key + ", ali_notify_url=" + ali_notify_url + ", ali_return_url=" + ali_return_url
                + ", ali_quit_url=" + ali_quit_url + ", ali_sign_type=" + ali_sign_type + ", ali_charset=" + ali_charset
                + ", ali_gatewayUrl=" + ali_gatewayUrl + ", ali_pid=" + ali_pid + ", ali_timeout_express="
                + ali_timeout_express + "]";
    }
    
}

package com.example.learn.utils.pay.alipay;

/**
 * 支付宝工具类
 * @author Administrator
 *
 */
@Component
public class AliPayUtil {
    
    @Autowired
    private AliPayProperties aliPayProperties ; 

    private static AliPayProperties staticAliPayProperties;
    
    static AlipayClient alipayClient;
    
    /**
     * 初始化
     */
    @PostConstruct 
    public void init() {
        staticAliPayProperties = aliPayProperties;
        alipayClient = new DefaultAlipayClient(staticAliPayProperties.getAli_gatewayUrl(), staticAliPayProperties.getAli_app_id(), staticAliPayProperties.getAli_merchant_private_key(), "json", staticAliPayProperties.getAli_charset(), staticAliPayProperties.getAli_alipay_public_key(), staticAliPayProperties.getAli_sign_type());
    } 
}

　　/**
     * alipay.trade.wap.pay：H5手机网站支付接口2.0（外部商户创建订单并支付）
     * @param out_trade_no：商户订单号
     * @param total_amount：支付金额，单位：元
     * @return
     */
    public static String alipayTradeWapPay(String out_trade_no, String total_amount){
        try {
            //（1）封装bizmodel信息
            AlipayTradeWapPayModel model = new AlipayTradeWapPayModel();
            //SDK已经封装掉了公共参数，这里只需要传入业务参数。以下方法为sdk的model入参方式(model和biz_content同时存在的情况下取biz_content)。
            model.setOutTradeNo(out_trade_no);
            model.setSubject("支付宝手机网站支付");
            model.setBody("支付宝手机网站支付");
            model.setProductCode("QUICK_WAP_WAY");
            model.setTotalAmount(total_amount);
            model.setTimeoutExpress(staticAliPayProperties.getAli_timeout_express());
            model.setQuitUrl(staticAliPayProperties.getAli_quit_url());
            //（2）设置请求参数
            AlipayTradeWapPayRequest alipayRequest = new AlipayTradeWapPayRequest();
            alipayRequest.setReturnUrl(staticAliPayProperties.getAli_return_url());
            alipayRequest.setNotifyUrl(staticAliPayProperties.getAli_notify_url());
            alipayRequest.setBizModel(model);                                                                                                                                                               
            //（3）请求
            String form = alipayClient.pageExecute(alipayRequest).getBody();
            System.out.println("*********************\n返回结果为："+form);
            return form;
        } catch (AlipayApiException e) {
            e.printStackTrace();
            return null;
        }
    }

<form name="punchout_form" method="post" action="https://openapi.alipaydev.com/gateway.do?charset=utf-8&method=alipay.trade.wap.pay&sign=ctYtQCctKweZCxjDAn8D2y4VxnjAI6uu0SYtIaxkPxf2LskIT4fakZF5xciExeHJW5dbOdiujHltgjaTMK9ikxcdDpDiRhH78E8p83Vs6NQFpHjlBRDTf8dO24PC%2Be3DIbqR8VDImCeBcJKX5yDf4fiqdjoPRHZeb7LrktlmoXRk3TW%2BQbgKigwlCYGBwyBV4%2FTLVDo5piS6FJT1SjCiSZ3K02k7MzcKvFBTIJeiA9dDxyfLfh2SW14uVjU8ny6e7f5n62y0%2B5HcUsUrjN%2BLuVSaj6h76T0PvwVUhBW4gJGiL2n36MiaQTZUdhOrP1qHefzloRnxoeO%2Biwsl2SYCpQ%3D%3D&return_url=http%3A%2F%2Ftrt.wgzvip.com%2Fapi%2FaliReturnPay%2Frecharge%2FreturnPaySynchronizationRecharge&notify_url=http%3A%2F%2Ftrt.wgzvip.com%2Fapi%2FaliReturnPay%2Frecharge%2FreturnPayAsynchronousRecharge&version=1.0&app_id=2021000116673834&sign_type=RSA2&timestamp=2020-08-01+16%3A48%3A10&alipay_sdk=alipay-sdk-java-3.3.87.ALL&format=json">
<input type="hidden" name="biz_content" value="{&quot;body&quot;:&quot;支付宝手机网站支付&quot;,&quot;out_trade_no&quot;:&quot;20200801164810929688437&quot;,&quot;product_code&quot;:&quot;QUICK_WAP_WAY&quot;,&quot;quit_url&quot;:&quot;http:\/\/trt.wgzvip.com\/alipay\/aliPayQuitUrl&quot;,&quot;subject&quot;:&quot;支付宝手机网站支付&quot;,&quot;timeout_express&quot;:&quot;30m&quot;,&quot;total_amount&quot;:&quot;0.01&quot;}">
<input type="submit" value="立即支付" style="display:none" >
</form>

<script>document.forms[0].submit();</script>

1、quit_url：用户付款中途退出返回商户网站的地址，手机网站支付选填参数
　　（1）设置要求：完整的路径名，携带http://或https://
　　（2）参数说明：添加该参数后在 h5支付收银台会出现返回按钮，可用于用户付款中途退出并返回到该参数指定的商户网站地址。
　　（3）注意：该参数对支付宝钱包标准收银台下的跳转不生效。2019年8月份后手机网站支付未安装支付宝钱包，默认提示下载钱包，不走H5页面支付。该参数设置无效。
2、return_url：页面跳转同步通知页面路径
　　（1）设置要求：完整的路径名，携带http://或https://
　　（2）参数说明：添加该参数后，支付宝会以get的方式向该地址发送通知，核实同步页面是否有跳转，手机网站支付接口如果同步页面没有进行跳转是不会发送对应的同步回调数据内容。
　　（3）注意：不能以同步的跳转作为支付结果的判断，支付宝最终的支付结果必须以异步通知或者商户主动查询结果为主，如果同步没有跳转，参考以下网址排查：https://opensupport.alipay.com/support/knowledge/01/201602474937?ant_source=antsupport　
3、notify_url：服务器异步通知页面路径
　　（1）设置要求：手机网站支付接口的参数notify_url必须是公网能post访问的接口地址；不建议加自定义参数，异步通知可通过请求参数设置passback_params公用回传参数，该参数异步通知返回。
　　（2）参数说明：添加该参数之后，支付宝会以post方式发送支付结果通知，需要在异步地址页面使用post方式进行接收。
　　（3）注意：如果没有收到支付宝的异步通知，参考以下网址排查：https://opensupport.alipay.com/support/knowledge/01/201602475759?ant_source=antsupport

package com.example.learn.utils.string;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

public class RequestMap {

    /** 
     * 从request中获得参数Map，并返回可读的Map 
     *  
     * @param request 
     * @return 
     */  
    @SuppressWarnings({ "unchecked", "rawtypes" })  
    public static Map getParameterMap(HttpServletRequest request) {  
        // 参数Map  
        Map properties = request.getParameterMap();  
        // 返回值Map  
        Map returnMap = new HashMap();  
        Iterator entries = properties.entrySet().iterator();  
        Map.Entry entry;  
        String name = "";  
        String value = "";  
        while (entries.hasNext()) {  
            entry = (Map.Entry) entries.next();  
            name = (String) entry.getKey();  
            Object valueObj = entry.getValue();  
            if(null == valueObj){  
                value = "";  
            }else if(valueObj instanceof String[]){  
                String[] values = (String[])valueObj;  
                for(int i=0;i<values.length;i++){  
                    value = values[i] + ",";  
                }  
                value = value.substring(0, value.length()-1);  
            }else{  
                value = valueObj.toString();  
            }  
            returnMap.put(name, value);  
        }  
        return returnMap;  
    } 

}

{
　　gmt_create=2020-08-01 17:02:52, 
　　charset=utf-8, 
　　seller_email=knqmbr3206@sandbox.com, 
　　subject=支付宝手机网站支付, 
　　sign=YlFLi+efcQVJyEppUiTE3XT25MrP6GWnIORf4/CiodPgiFHpWt/mjXczFupkIgkBdrvUH4IzvtFDS4Wu2+sdpO2tiiNzQLqzwWuVlpuz6EeBabligpR/kDEFuHLYhG0Wmbg+/bZiUKrRP/RbMeRwXZqNMVd62On3vlg2xUacQto2CEZ9Jirw46bSJl1i0oXPWmpatzmx6bavnfGJ515Ubzjli53q/6D9cxTIy5ZYTuTrFWcHeXXhuaxNdOXpIgajm9im1NgvLIhhrak2uSsOttNObHF8v05yXo81SI7McMTgvPvTFG55y5mN6mBi0+wdIIh2AiHZTi0yQt1tWnSGWg==, 
　　body=支付宝手机网站支付, buyer_id=2088102181191145, invoice_amount=0.01, notify_id=2020080100222170255091140507330314, fund_bill_list=[{"amount":"0.01","fundChannel":"ALIPAYACCOUNT"}], 
　　notify_type=trade_status_sync, 
　　trade_status=TRADE_SUCCESS, 
　　receipt_amount=0.01, 
　　buyer_pay_amount=0.01, 
　　app_id=2021000116673834, 
　　sign_type=RSA2, 
　　seller_id=2088621954885028, 
　　gmt_payment=2020-08-01 17:02:54, 
　　notify_time=2020-08-01 17:02:55, 
　　version=1.0, 
　　out_trade_no=20200801170240119363676, 
　　total_amount=0.01, 
　　trade_no=2020080122001491140510105364, 
　　auth_app_id=2021000116673834, 
　　buyer_logon_id=uin***@sandbox.com, 
　　point_amount=0.00
}