微信支付后退款遇到的问题

微信支付退款，加载证书过程中遇到了异常问题：

// 指定读取证书格式为PKCS12

KeyStore keyStore = KeyStore.getInstance("PKCS12");

// 读取本机存放的PKCS12证书

FileInputStream instream = new FileInputStream(new File("apiclient_cert.p12"));

try {

// 指定PKCS12的密码（商户ID）

keyStore.load(instream, payRefundEntity.getParterid().toCharArray());

}

finally {

instream.close();

}

SSLContext sslcontext = SSLContexts.custom().loadKeyMaterial(keyStore,

payRefundEntity.getParterid().toCharArray()).build();

// 指定TLS版本

SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(

sslcontext,

new String[] { "TLSv1" },

null,

SSLConnectionSocketFactory.BROWSER_COMPATIBLE_HOSTNAME_VERIFIER);

。。。。。。

在进行SSLConnectionSocketFactory 初始化的时候报出异常：

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/http/util/Args
at org.apache.http.conn.ssl.SSLConnectionSocketFactory.<init>(SSLConnectionSocketFactory.java:189)
at com.ciii.weixin_v3.pay.WeiXin.doRefund(WeiXin.java:257)
at com.ciii.weixin_v3.pay.WeiXin.doInBackgroundRefund(WeiXin.java:219)
at com.ciii.weixin_v3.pay.PayRefundEntity.main(PayRefundEntity.java:54)
Caused by: java.lang.ClassNotFoundException: org.apache.http.util.Args
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 4 more

这是因为httpcore.jar的版本问题造成的，需要提升其版本，该项目是将4.2.4换成了4.3.3就可以了。