init:米东项目初始化

src/main/java/com/saye/hospitalgd/util/WxPayUtil.java

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+package com.saye.hospitalgd.util;
+
+import com.wechat.pay.contrib.apache.httpclient.WechatPayHttpClientBuilder;
+import com.wechat.pay.contrib.apache.httpclient.auth.AutoUpdateCertificatesVerifier;
+import com.wechat.pay.contrib.apache.httpclient.auth.PrivateKeySigner;
+import com.wechat.pay.contrib.apache.httpclient.auth.WechatPay2Credentials;
+import com.wechat.pay.contrib.apache.httpclient.auth.WechatPay2Validator;
+import com.wechat.pay.contrib.apache.httpclient.util.PemUtil;
+import org.apache.http.client.methods.CloseableHttpResponse;
+import org.apache.http.client.methods.HttpGet;
+import org.apache.http.client.utils.URIBuilder;
+import org.apache.http.impl.client.CloseableHttpClient;
+import org.apache.http.util.EntityUtils;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.security.PrivateKey;
+
+/**
+ * @author thuang
+ * @version 1.0
+ * @description:
+ * 微信支付工具类 使用前先建立对象
+ * @date 2021/8/10 9:53
+ */
+public class WxPayUtil {
+
+    public CloseableHttpClient httpClient;
+    public String mchId; //商户号
+    public String privateKey; //商户私钥
+    public String mchSerialNo; //商户证书序列号
+    public String apiV3Key; //API v3密钥
+
+    //
+    public WxPayUtil(String mchId,String privateKey,String mchSerialNo,String apiV3Key) throws IOException {
+        this.mchId=mchId;
+        this.privateKey=privateKey;
+        this.mchSerialNo=mchSerialNo;
+        this.apiV3Key=apiV3Key;
+        setup();
+    }
+
+    /**
+     * @description:
+     * 加载基础数据
+     * @author thuang
+     * @date 2021/8/10 10:42
+     * @version 1.0
+     */
+    public void setup() throws IOException {
+        // 加载商户私钥（privateKey：私钥字符串）
+        PrivateKey merchantPrivateKey = PemUtil
+                .loadPrivateKey(new ByteArrayInputStream(privateKey.getBytes("utf-8")));
+
+        // 加载平台证书（mchId：商户号,mchSerialNo：商户证书序列号,apiV3Key：V3密钥）
+        AutoUpdateCertificatesVerifier verifier = new AutoUpdateCertificatesVerifier(
+                new WechatPay2Credentials(mchId, new PrivateKeySigner(mchSerialNo, merchantPrivateKey)),apiV3Key.getBytes("utf-8"));
+
+        // 初始化httpClient
+        httpClient = WechatPayHttpClientBuilder.create()
+                .withMerchant(mchId, mchSerialNo, merchantPrivateKey)
+                .withValidator(new WechatPay2Validator(verifier)).build();
+    }
+
+    /**
+     * @description:
+     * 完成后关闭
+     * @author thuang
+     * @date 2021/8/10 10:42
+     * @version 1.0
+     */
+    public void after() throws IOException {
+        httpClient.close();
+    }
+
+    /**
+     * @description:
+     * 请求账单
+     * bill_date 账单日期 格式YYYY-MM-DD 仅支持三个月内的账单下载申请。
+     *
+     * bill_type 账单类型
+     *  枚举值：
+     *  ALL：返回当日所有订单信息（不含充值退款订单）
+     *  SUCCESS：返回当日成功支付的订单（不含充值退款订单）
+     *  REFUND：返回当日退款订单（不含充值退款订单）
+     * @author thuang
+     * @date 2021/8/10 10:42
+     * @version 1.0
+     */
+    public void TradeBill(String bill_date,String bill_type) throws Exception {
+
+        //请求URL
+        URIBuilder uriBuilder = new URIBuilder("https://api.mch.weixin.qq.com/v3/bill/tradebill");
+        uriBuilder.setParameter("bill_date", bill_date);
+        uriBuilder.setParameter("bill_type", bill_type);
+
+        //完成签名并执行请求
+        HttpGet httpGet = new HttpGet(uriBuilder.build());
+        httpGet.addHeader("Accept", "application/json");
+        CloseableHttpResponse response = httpClient.execute(httpGet);
+
+        try {
+            int statusCode = response.getStatusLine().getStatusCode();
+            if (statusCode == 200) {
+                System.out.println("success,return body = " + EntityUtils.toString(response.getEntity()));
+            } else if (statusCode == 204) {
+                System.out.println("success");
+            } else {
+                System.out.println("failed,resp code = " + statusCode+ ",return body = " + EntityUtils.toString(response.getEntity()));
+                throw new IOException("request failed");
+            }
+        } finally {
+            response.close();
+        }
+    }
+
+    /**
+     * @description:
+     * 下载账单
+     * @author thuang
+     * @date 2021/8/10 10:45
+     * @version 1.0
+     */
+    public void DownloadUrl(String download_url) throws Exception{
+        PrivateKey merchantPrivateKey = PemUtil.loadPrivateKey(new ByteArrayInputStream(privateKey.getBytes("utf-8")));
+
+        //初始化httpClient
+        //该接口无需进行签名验证、通过withValidator((response) -> true)实现
+        httpClient =  WechatPayHttpClientBuilder.create().withMerchant(mchId, mchSerialNo, merchantPrivateKey).withValidator((response) -> true).build();
+
+        //请求URL
+        //账单文件的下载地址的有效时间为30s
+        URIBuilder uriBuilder = new URIBuilder(download_url);
+        HttpGet httpGet = new HttpGet(uriBuilder.build());
+        httpGet.addHeader("Accept", "application/json");
+
+        //执行请求
+        CloseableHttpResponse response = httpClient.execute(httpGet);
+        try {
+            int statusCode = response.getStatusLine().getStatusCode();
+            if (statusCode == 200) {
+                System.out.println("success,return body = " + EntityUtils.toString(response.getEntity()));
+            } else if (statusCode == 204) {
+                System.out.println("success");
+            } else {
+                System.out.println("failed,resp code = " + statusCode+ ",return body = " + EntityUtils.toString(response.getEntity()));
+                throw new IOException("request failed");
+            }
+        } finally {
+            response.close();
+        }
+    }
+}