diff --git a/mailbox-lan/src/main/java/com/biutag/lan/util/SmsLan.java b/mailbox-lan/src/main/java/com/biutag/lan/util/SmsLan.java
index e5fd339..820c26f 100644
--- a/mailbox-lan/src/main/java/com/biutag/lan/util/SmsLan.java
+++ b/mailbox-lan/src/main/java/com/biutag/lan/util/SmsLan.java
@@ -5,10 +5,7 @@ import lombok.extern.slf4j.Slf4j;
 
 import javax.crypto.Cipher;
 import javax.crypto.spec.SecretKeySpec;
-import java.io.BufferedReader;
-import java.io.InputStreamReader;
-import java.io.OutputStreamWriter;
-import java.io.PrintWriter;
+import java.io.*;
 import java.net.HttpURLConnection;
 import java.net.URL;
 import java.net.URLEncoder;
@@ -54,7 +51,6 @@ public class SmsLan {
             String jsonStr = JSON.toJSONString(dataMap);
             log.info("jsonStr: {}", jsonStr);
             String key = encrypt(jsonStr, PASSWORD);
-            log.info("key: {}", key);
             key = URLEncoder.encode(key, "UTF-8");
             log.info("key: {}", key);
             String response = httpUtilPost(BASE_URL, "userid=" + USERNAME + "&key=" + key);
@@ -88,7 +84,6 @@ public class SmsLan {
             String jsonStr = JSON.toJSONString(dataMap);
             log.info("jsonStr: {}", jsonStr);
             String key = encrypt(jsonStr, PASSWORD);
-            log.info("key: {}", key);
             key = URLEncoder.encode(key, "UTF-8");
             log.info("key: {}", key);
             String response = httpUtilPost(BASE_URL, "userid=" + USERNAME + "&key=" + key);
@@ -120,7 +115,6 @@ public class SmsLan {
             String jsonStr = JSON.toJSONString(dataMap);
             log.info("jsonStr: {}", jsonStr);
             String key = encrypt(jsonStr, PASSWORD);
-            log.info("key: {}", key);
             key = URLEncoder.encode(key, "UTF-8");
             log.info("key: {}", key);
             String response = httpUtilPost(BASE_URL, "userid=" + USERNAME + "&key=" + key);
@@ -133,42 +127,55 @@ public class SmsLan {
 
     /**
      * POST 请求
-     *
      * @param urls
-     * @param params
+     * @param par
      * @return
      */
-    public static String httpUtilPost(String urls, String params) {
+    public static String httpUtilPost(String urls, String par) {
         URL url;
         HttpURLConnection uConn = null;
-        String result = "";
+        String sResult = "";
+        BufferedReader in = null;
+        PrintWriter out = null;
+        String line = "";
         try {
+            sResult = "";
             url = new URL(urls);
             uConn = (HttpURLConnection) url.openConnection();
             uConn.setRequestMethod("POST");
+            System.setProperty("sun.net.client.defaultConnectTimeout", String.valueOf(10000));
+            System.setProperty("sun.net.client.defaultReadTimeout", String.valueOf(10000));
             uConn.setDoInput(true);
             uConn.setDoOutput(true);
             uConn.connect();
-            try (PrintWriter out = new PrintWriter(new OutputStreamWriter(uConn.getOutputStream(), "utf-8"));
-                 BufferedReader in = new BufferedReader(new InputStreamReader(uConn.getInputStream(), "utf-8"))) {
-                out.write(params);
-                out.flush();
-                StringBuilder resultBuilder = new StringBuilder();
-                String line;
-                while ((line = in.readLine()) != null) {
-                    if (line.length() > 0)
-                        resultBuilder.append(line);
-                }
-                result = resultBuilder.toString();
+            out = new PrintWriter(new OutputStreamWriter(uConn.getOutputStream(), "utf-8"));
+            out.write(par);
+            out.flush();
+            out.close();
+            in = new BufferedReader(new InputStreamReader(uConn.getInputStream(), "utf-8"));
+            while ((line = in.readLine()) != null) {
+                if (line.length() > 0)
+                    sResult += line;
             }
+            in.close();
         } catch (Exception e) {
             e.printStackTrace();
         } finally {
-            if (uConn != null) {
-                uConn.disconnect();
+            try {
+                if (null != in)
+                    in.close();
+                in = null;
+                if (null != out)
+                    out.close();
+                out = null;
+                if (null != uConn)
+                    uConn.disconnect();
+                uConn = null;
+            } catch (IOException e) {
+                e.printStackTrace();
             }
         }
-        return result;
+        return sResult;
     }
 
 
diff --git a/mailbox-lan/src/test/java/com/biutag/lan/SmsTest.java b/mailbox-lan/src/test/java/com/biutag/lan/SmsTest.java
index dec0f31..61c9623 100644
--- a/mailbox-lan/src/test/java/com/biutag/lan/SmsTest.java
+++ b/mailbox-lan/src/test/java/com/biutag/lan/SmsTest.java
@@ -12,9 +12,6 @@ import java.util.Base64;
 
 public class SmsTest {
 
-    private static final String SENDURL = "AES/ECB/PKCS5PADDING";
-    private static final String USERID = "UTF8";
-
     // AES密钥（长度应为16个字节）
     private static final String PWD = "fzzd12345678dxpt";