feat:新增微信支付demo
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fanxb
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33
weChatPay/.gitignore
vendored
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33
weChatPay/.gitignore
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HELP.md
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target/
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!.mvn/wrapper/maven-wrapper.jar
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!**/src/main/**/target/
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!**/src/test/**/target/
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### STS ###
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.apt_generated
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.classpath
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.factorypath
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.project
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.settings
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.springBeans
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.sts4-cache
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### IntelliJ IDEA ###
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.idea
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*.iws
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*.iml
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*.ipr
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### NetBeans ###
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/nbproject/private/
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/nbbuild/
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/dist/
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/nbdist/
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/.nb-gradle/
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build/
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!**/src/main/**/build/
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!**/src/test/**/build/
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### VS Code ###
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.vscode/
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72
weChatPay/pom.xml
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weChatPay/pom.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-parent</artifactId>
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<version>2.7.2</version>
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<relativePath/> <!-- lookup parent from repository -->
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</parent>
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<groupId>com.example</groupId>
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<artifactId>weChatPay</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<name>weChatPay</name>
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<description>weChatPay</description>
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<properties>
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<java.version>1.8</java.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-web</artifactId>
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</dependency>
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<dependency>
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<groupId>cn.hutool</groupId>
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<artifactId>hutool-all</artifactId>
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<version>5.8.0</version>
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</dependency>
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<dependency>
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<groupId>com.github.wechatpay-apiv3</groupId>
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<artifactId>wechatpay-apache-httpclient</artifactId>
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<version>0.4.7</version>
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</dependency>
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<dependency>
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<groupId>com.alibaba</groupId>
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<artifactId>fastjson</artifactId>
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<version>2.0.7</version>
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</dependency>
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<dependency>
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<groupId>org.projectlombok</groupId>
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<artifactId>lombok</artifactId>
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<optional>true</optional>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-test</artifactId>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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<configuration>
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<excludes>
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<exclude>
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<groupId>org.projectlombok</groupId>
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<artifactId>lombok</artifactId>
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</exclude>
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</excludes>
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</configuration>
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</plugin>
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</plugins>
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</build>
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</project>
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package com.example.wechatpay;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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@SpringBootApplication
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public class WeChatPayApplication {
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public static void main(String[] args) {
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SpringApplication.run(WeChatPayApplication.class, args);
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}
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}
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package com.example.wechatpay.entity;
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import lombok.Data;
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import lombok.experimental.Accessors;
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import java.math.BigDecimal;
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/**
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* t_pay_history
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*/
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@Data
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@Accessors(chain = true)
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public class PayHistoryPo {
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private Integer id;
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/**
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* 创建时间
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*/
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private Long createTime;
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/**
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* 创建人
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*/
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private Integer createUser;
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/**
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* 更新时间
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*/
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private Long updateTime;
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/**
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* 更新人
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*/
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private Integer updateUser;
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/**
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* 预支付id
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*/
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private String prePayId;
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/**
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* 应用流水号
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*/
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private String sn;
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/**
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* 支付金额
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*/
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private BigDecimal price;
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/**
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* 描述信息
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*/
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private String description;
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/**
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* 0:未支付，1：已支付
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*/
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private String status;
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}
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package com.example.wechatpay.service;
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import com.example.wechatpay.entity.PayHistoryPo;
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import javax.servlet.http.HttpServletRequest;
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import java.util.Map;
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public interface WeChatPayService {
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/**
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* 微信支付预定单生成
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*
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* @param body body
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* @return java.util.Map<java.lang.String, java.lang.String>
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* @author fanxb
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* date 2022/7/25 21:50
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*/
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Map<String, String> pay(PayHistoryPo body);
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/**
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* 微信支付回调处理
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*
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* @author fanxb
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* date 2022/7/25 22:27
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*/
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void notify(HttpServletRequest servletRequest);
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}
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package com.example.wechatpay.service.impl;
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import cn.hutool.core.codec.Base64;
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import cn.hutool.core.util.IdUtil;
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import cn.hutool.crypto.SecureUtil;
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import cn.hutool.crypto.asymmetric.Sign;
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import cn.hutool.crypto.asymmetric.SignAlgorithm;
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import com.alibaba.fastjson2.JSON;
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import com.alibaba.fastjson2.JSONObject;
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import com.example.wechatpay.entity.PayHistoryPo;
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import com.example.wechatpay.service.WeChatPayService;
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import com.wechat.pay.contrib.apache.httpclient.WechatPayHttpClientBuilder;
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import com.wechat.pay.contrib.apache.httpclient.auth.PrivateKeySigner;
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import com.wechat.pay.contrib.apache.httpclient.auth.Verifier;
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import com.wechat.pay.contrib.apache.httpclient.auth.WechatPay2Credentials;
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import com.wechat.pay.contrib.apache.httpclient.auth.WechatPay2Validator;
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import com.wechat.pay.contrib.apache.httpclient.cert.CertificatesManager;
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import com.wechat.pay.contrib.apache.httpclient.notification.Notification;
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import com.wechat.pay.contrib.apache.httpclient.notification.NotificationHandler;
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import com.wechat.pay.contrib.apache.httpclient.notification.NotificationRequest;
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import com.wechat.pay.contrib.apache.httpclient.util.PemUtil;
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import lombok.extern.slf4j.Slf4j;
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import org.apache.http.client.methods.CloseableHttpResponse;
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import org.apache.http.client.methods.HttpPost;
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import org.apache.http.entity.StringEntity;
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import org.apache.http.impl.client.CloseableHttpClient;
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import org.apache.http.util.EntityUtils;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.context.annotation.DependsOn;
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import org.springframework.stereotype.Component;
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import javax.annotation.PostConstruct;
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import javax.servlet.http.HttpServletRequest;
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import java.io.BufferedReader;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.math.BigDecimal;
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import java.nio.charset.StandardCharsets;
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import java.security.PrivateKey;
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import java.util.HashMap;
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import java.util.Locale;
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import java.util.Map;
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@Component
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@Slf4j
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public class WeChatPayServiceImpl implements WeChatPayService {
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/**
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* 小程序appId
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*/
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private String appId;
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/**
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* 商户id
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*/
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private String merchantId;
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/**
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* 证书序列号
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*/
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private String merchantSerialNumber;
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/**
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* 私钥文件路径
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*/
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private String certKeyPath;
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/**
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* 商户密钥
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*/
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private String apiV3Key;
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/**
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* 微信专业httpClient
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*/
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private static CloseableHttpClient httpClient;
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/**
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* 生成签名用
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*/
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private static Sign sign;
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/**
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* 证书管理器
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*/
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private static CertificatesManager certificatesManager;
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@PostConstruct
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public void init() throws Exception {
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log.info("私钥路径:{}", certKeyPath);
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PrivateKey merchantPrivateKey = PemUtil.loadPrivateKey(new FileInputStream(certKeyPath));
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// 获取证书管理器实例
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certificatesManager = CertificatesManager.getInstance();
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sign = SecureUtil.sign(SignAlgorithm.SHA256withRSA, merchantPrivateKey.getEncoded(), null);
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// 向证书管理器增加需要自动更新平台证书的商户信息
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certificatesManager.putMerchant(merchantId, new WechatPay2Credentials(merchantId,
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new PrivateKeySigner(merchantSerialNumber, merchantPrivateKey)), apiV3Key.getBytes(StandardCharsets.UTF_8));
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// 从证书管理器中获取verifier
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Verifier verifier = certificatesManager.getVerifier(merchantId);
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WechatPayHttpClientBuilder builder = WechatPayHttpClientBuilder.create()
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.withMerchant(merchantId, merchantSerialNumber, merchantPrivateKey)
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.withValidator(new WechatPay2Validator(verifier));
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httpClient = builder.build();
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}
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@Override
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public Map<String, String> pay(PayHistoryPo body) {
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long now = System.currentTimeMillis();
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JSONObject obj = new JSONObject();
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obj.put("mchid", merchantId);
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obj.put("appid", appId);
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obj.put("description", body.getDescription());
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obj.put("out_trade_no", body.getSn());
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obj.put("notify_url", "https://backend/asdfasdf/notify");
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Map<String, String> attach = new HashMap<>();
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attach.put("sn", body.getSn());
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obj.put("attach", JSON.toJSONString(attach));
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JSONObject amount = new JSONObject();
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amount.put("total", body.getPrice().multiply(BigDecimal.valueOf(100)).intValue());
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obj.put("amount", amount);
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JSONObject payer = new JSONObject();
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//放入用户的openId
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payer.put("openid", "");
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obj.put("payer", payer);
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log.info("请求参数为：" + JSON.toJSONString(obj));
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HttpPost httpPost = new HttpPost("https://api.mch.weixin.qq.com/v3/pay/transactions/jsapi");
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httpPost.addHeader("Accept", "application/json");
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httpPost.addHeader("Content-type", "application/json; charset=utf-8");
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httpPost.setEntity(new StringEntity(obj.toJSONString(), "UTF-8"));
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try {
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CloseableHttpResponse response = httpClient.execute(httpPost);
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String bodyAsString = EntityUtils.toString(response.getEntity());
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String prePayId = JSONObject.parseObject(bodyAsString).getString("prepay_id");
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//准备小程序端的请求参数
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Map<String, String> map = new HashMap<>(6);
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map.put("appId", appId);
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String timeStamp = String.valueOf(now / 1000);
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map.put("timeStamp", timeStamp);
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String nonceStr = IdUtil.fastSimpleUUID();
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map.put("nonceStr", nonceStr);
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String packageStr = "prepay_id=" + prePayId;
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map.put("package", packageStr);
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map.put("signType", "RSA");
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map.put("paySign", Base64.encode(sign.sign(appId + "\n" + timeStamp + "\n" + nonceStr + "\n" + packageStr + "\n")));
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return map;
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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}
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@Override
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public void notify(HttpServletRequest servletRequest) {
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String timeStamp = servletRequest.getHeader("Wechatpay-Timestamp");
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String nonce = servletRequest.getHeader("Wechatpay-Nonce");
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String signature = servletRequest.getHeader("Wechatpay-Signature");
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String certSn = servletRequest.getHeader("Wechatpay-Serial");
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try (BufferedReader reader = new BufferedReader(new InputStreamReader(servletRequest.getInputStream()))) {
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StringBuilder stringBuilder = new StringBuilder();
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String line;
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while ((line = reader.readLine()) != null) {
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stringBuilder.append(line);
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}
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String obj = stringBuilder.toString();
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log.info("回调数据:{},{},{},{},{}", obj, timeStamp, nonce, signature, certSn);
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Verifier verifier = certificatesManager.getVerifier(merchantId);
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String sn = verifier.getValidCertificate().getSerialNumber().toString(16).toUpperCase(Locale.ROOT);
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NotificationRequest request = new NotificationRequest.Builder().withSerialNumber(sn)
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.withNonce(nonce)
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.withTimestamp(timeStamp)
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.withSignature(signature)
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.withBody(obj)
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.build();
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NotificationHandler handler = new NotificationHandler(verifier, apiV3Key.getBytes(StandardCharsets.UTF_8));
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// 验签和解析请求体
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Notification notification = handler.parse(request);
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JSONObject res = JSON.parseObject(notification.getDecryptData());
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//做一些操作
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JSONObject attach = res.getJSONObject("attach");
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} catch (Exception e) {
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log.error("微信支付回调失败", e);
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}
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}
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}
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1
weChatPay/src/main/resources/application.properties
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1
weChatPay/src/main/resources/application.properties
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@ -0,0 +1,13 @@
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package com.example.wechatpay;
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import org.junit.jupiter.api.Test;
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import org.springframework.boot.test.context.SpringBootTest;
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@SpringBootTest
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class WeChatPayApplicationTests {
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@Test
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void contextLoads() {
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}
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}
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