javax.net.ssl.SSLHandshakeException: Remote host closed connection during handshake at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:992) at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1375) at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1403) at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1387) at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:559) at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185) at sun.net.www.protocol.http.HttpURLConnection.getOutputStream0(HttpURLConnection.java:1316) at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:1291) at sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:250) at com.ruoyi.web.utils.HttpUtil.sendPost(HttpUtil.java:37) at com.ruoyi.web.utils.WxHttpUtils.postRequest(WxHttpUtils.java:53) at com.ruoyi.web.utils.WxHttpUtils.commonPost(WxHttpUtils.java:39) at com.ruoyi.web.service.order.impl.WxOrderServiceImpl.lambda$saveOrder$8(WxOrderServiceImpl.java:530) at java.util.concurrent.CompletableFuture$AsyncSupply.run$$$capture(CompletableFuture.java:1590) at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) Caused by: java.io.EOFException: SSL peer shut down incorrectly public static String sendPost(String url, String param) throws Exception{ PrintWriter out = null; BufferedReader in = null; StringBuilder result = new StringBuilder(); try { log.info("sendPost - {}", url); URL realUrl = new URL(url); URLConnection conn = realUrl.openConnection(); conn.setRequestProperty("accept", "*/*"); conn.setRequestProperty("connection", "Keep-Alive"); conn.setRequestProperty("user-agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64)"); conn.setRequestProperty("Accept-Charset", "utf-8"); conn.setRequestProperty("contentType", "utf-8"); conn.setDoOutput(true); conn.setDoInput(true); out = new PrintWriter(conn.getOutputStream()); out.print(param); out.flush(); in = new BufferedReader(new InputStreamReader(conn.getInputStream(), StandardCharsets.UTF_8)); String line; while ((line = in.readLine()) != null) { result.append(line); } log.info("recv - {}", result); } finally { try { if (out != null) { out.close(); } if (in != null) { in.close(); } } catch (IOException ex) { log.error("调用in.close Exception, url=" + url + ",param=" + param, ex); } } return result.toString(); }