🎨 优化微信支付v3代码，兼容java7

weixin-java-pay/pom.xml

@@ -13,11 +13,6 @@
   <name>WxJava - PAY Java SDK</name>
   <description>微信支付 Java SDK</description>
 
-  <properties>
-    <maven.compiler.source>1.8</maven.compiler.source>
-    <maven.compiler.target>1.8</maven.compiler.target>
-  </properties>
-
   <dependencies>
     <dependency>
       <groupId>com.github.binarywang</groupId>
@@ -84,6 +79,11 @@
       <groupId>com.google.code.gson</groupId>
       <artifactId>gson</artifactId>
     </dependency>
+    <dependency>
+      <groupId>joda-time</groupId>
+      <artifactId>joda-time</artifactId>
+      <scope>compile</scope>
+    </dependency>
   </dependencies>
 
   <profiles>

weixin-java-pay/src/main/java/com/github/binarywang/wxpay/config/WxPayConfig.java

@@ -4,8 +4,8 @@ import com.github.binarywang.wxpay.exception.WxPayException;
 import com.github.binarywang.wxpay.v3.WxPayV3HttpClientBuilder;
 import com.github.binarywang.wxpay.v3.auth.AutoUpdateCertificatesVerifier;
 import com.github.binarywang.wxpay.v3.auth.PrivateKeySigner;
-import com.github.binarywang.wxpay.v3.auth.WechatPay2Credentials;
-import com.github.binarywang.wxpay.v3.auth.WechatPay2Validator;
+import com.github.binarywang.wxpay.v3.auth.WxPayCredentials;
+import com.github.binarywang.wxpay.v3.auth.WxPayValidator;
 import com.github.binarywang.wxpay.v3.util.PemUtils;
 import jodd.util.ResourcesUtil;
 import lombok.Data;
@@ -300,8 +300,8 @@ public class WxPayConfig {
       CloseableHttpClient httpClient = WxPayV3HttpClientBuilder.create()
         .withMerchant(mchId, certSerialNo, merchantPrivateKey)
         .withWechatpay(Collections.singletonList(PemUtils.loadCertificate(certInputStream)))
-        .withValidator(new WechatPay2Validator(new AutoUpdateCertificatesVerifier(
-          new WechatPay2Credentials(mchId, new PrivateKeySigner(certSerialNo, merchantPrivateKey)),
+        .withValidator(new WxPayValidator(new AutoUpdateCertificatesVerifier(
+          new WxPayCredentials(mchId, new PrivateKeySigner(certSerialNo, merchantPrivateKey)),
           apiV3Key.getBytes(StandardCharsets.UTF_8))))
         .build();
       this.apiV3HttpClient = httpClient;

weixin-java-pay/src/main/java/com/github/binarywang/wxpay/v3/WxPayV3HttpClientBuilder.java

@@ -7,8 +7,8 @@ import java.util.List;
 
 import com.github.binarywang.wxpay.v3.auth.CertificatesVerifier;
 import com.github.binarywang.wxpay.v3.auth.PrivateKeySigner;
-import com.github.binarywang.wxpay.v3.auth.WechatPay2Credentials;
-import com.github.binarywang.wxpay.v3.auth.WechatPay2Validator;
+import com.github.binarywang.wxpay.v3.auth.WxPayCredentials;
+import com.github.binarywang.wxpay.v3.auth.WxPayValidator;
 import org.apache.http.impl.client.CloseableHttpClient;
 import org.apache.http.impl.client.HttpClientBuilder;
 import org.apache.http.impl.execchain.ClientExecChain;
@@ -37,7 +37,7 @@ public class WxPayV3HttpClientBuilder extends HttpClientBuilder {
 
   public WxPayV3HttpClientBuilder withMerchant(String merchantId, String serialNo, PrivateKey privateKey) {
     this.credentials =
-        new WechatPay2Credentials(merchantId, new PrivateKeySigner(serialNo, privateKey));
+        new WxPayCredentials(merchantId, new PrivateKeySigner(serialNo, privateKey));
     return this;
   }
 
@@ -47,7 +47,7 @@ public class WxPayV3HttpClientBuilder extends HttpClientBuilder {
   }
 
   public WxPayV3HttpClientBuilder withWechatpay(List<X509Certificate> certificates) {
-    this.validator = new WechatPay2Validator(new CertificatesVerifier(certificates));
+    this.validator = new WxPayValidator(new CertificatesVerifier(certificates));
     return this;
   }
 

weixin-java-pay/src/main/java/com/github/binarywang/wxpay/v3/auth/AutoUpdateCertificatesVerifier.java

@@ -3,6 +3,7 @@ package com.github.binarywang.wxpay.v3.auth;
 import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.github.binarywang.wxpay.v3.Credentials;
+import com.github.binarywang.wxpay.v3.Validator;
 import com.github.binarywang.wxpay.v3.WxPayV3HttpClientBuilder;
 import com.github.binarywang.wxpay.v3.util.AesUtils;
 import com.github.binarywang.wxpay.v3.util.PemUtils;
@@ -13,6 +14,8 @@ import org.apache.http.client.methods.CloseableHttpResponse;
 import org.apache.http.client.methods.HttpGet;
 import org.apache.http.impl.client.CloseableHttpClient;
 import org.apache.http.util.EntityUtils;
+import org.joda.time.Instant;
+import org.joda.time.Minutes;
 
 import java.io.ByteArrayInputStream;
 import java.io.IOException;
@@ -21,8 +24,6 @@ import java.security.GeneralSecurityException;
 import java.security.cert.CertificateExpiredException;
 import java.security.cert.CertificateNotYetValidException;
 import java.security.cert.X509Certificate;
-import java.time.Duration;
-import java.time.Instant;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.concurrent.locks.ReentrantLock;
@@ -98,7 +99,7 @@ public class AutoUpdateCertificatesVerifier implements Verifier {
 
   @Override
   public boolean verify(String serialNumber, byte[] message, String signature) {
-    if (instant == null || Duration.between(instant, Instant.now()).toMinutes() >= minutesInterval) {
+    if (instant == null || Minutes.minutesBetween(instant, Instant.now()).getMinutes() >= minutesInterval) {
       if (lock.tryLock()) {
         try {
           autoUpdateCert();
@@ -117,7 +118,12 @@ public class AutoUpdateCertificatesVerifier implements Verifier {
   private void autoUpdateCert() throws IOException, GeneralSecurityException {
     CloseableHttpClient httpClient = WxPayV3HttpClientBuilder.create()
       .withCredentials(credentials)
-      .withValidator(verifier == null ? (response) -> true : new WechatPay2Validator(verifier))
+      .withValidator(verifier == null ? new Validator() {
+        @Override
+        public boolean validate(CloseableHttpResponse response) throws IOException {
+          return true;
+        }
+      } : new WxPayValidator(verifier))
       .build();
 
     HttpGet httpGet = new HttpGet(CERT_DOWNLOAD_PATH);

weixin-java-pay/src/main/java/com/github/binarywang/wxpay/v3/auth/WxPayCredentials.java

@@ -6,22 +6,22 @@ import java.net.URI;
 import java.security.SecureRandom;
 
 import com.github.binarywang.wxpay.v3.Credentials;
+import lombok.extern.slf4j.Slf4j;
 import org.apache.http.client.methods.HttpEntityEnclosingRequestBase;
 import org.apache.http.client.methods.HttpUriRequest;
 import org.apache.http.util.EntityUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-public class WechatPay2Credentials implements Credentials {
-  private static final Logger log = LoggerFactory.getLogger(WechatPay2Credentials.class);
-
+@Slf4j
+public class WxPayCredentials implements Credentials {
   private static final String SYMBOLS =
       "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
   private static final SecureRandom RANDOM = new SecureRandom();
   protected String merchantId;
   protected Signer signer;
 
-  public WechatPay2Credentials(String merchantId, Signer signer) {
+  public WxPayCredentials(String merchantId, Signer signer) {
     this.merchantId = merchantId;
     this.signer = signer;
   }

weixin-java-pay/src/main/java/com/github/binarywang/wxpay/v3/auth/WxPayValidator.java

@@ -4,20 +4,18 @@ package com.github.binarywang.wxpay.v3.auth;
 import java.io.IOException;
 
 import com.github.binarywang.wxpay.v3.Validator;
+import lombok.extern.slf4j.Slf4j;
 import org.apache.http.Header;
 import org.apache.http.HttpEntity;
 import org.apache.http.client.methods.CloseableHttpResponse;
 import org.apache.http.util.EntityUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
-
-public class WechatPay2Validator implements Validator {
-
-  private static final Logger log = LoggerFactory.getLogger(WechatPay2Validator.class);
-
+@Slf4j
+public class WxPayValidator implements Validator {
   private Verifier verifier;
 
-  public WechatPay2Validator(Verifier verifier) {
+  public WxPayValidator(Verifier verifier) {
     this.verifier = verifier;
   }