diff --git a/build.gradle b/build.gradle
index 686cd6d..7ed1720 100644
--- a/build.gradle
+++ b/build.gradle
@@ -54,7 +54,7 @@ uploadArchives {
                 authentication(userName: NEXUS_USERNAME, password: NEXUS_PASSWORD)
             }
             pom.project {
-                version '1.1.10'
+                version '1.1.12'
                 artifactId ARTIFACT_Id
                 groupId GROUP_ID
                 packaging TYPE
diff --git a/src/main/java/com/taover/util/UtilExcel.java b/src/main/java/com/taover/util/UtilExcel.java
index 0ff4c64..c406080 100644
--- a/src/main/java/com/taover/util/UtilExcel.java
+++ b/src/main/java/com/taover/util/UtilExcel.java
@@ -299,6 +299,8 @@ public class UtilExcel {
 					}else if(cell.getCellType() == HSSFCell.CELL_TYPE_FORMULA){
 						dataRow.add(""+cell.getCellFormula());
 						//dataRow.add(cell.getNumericCellValue());
+					}else if(cell.getCellType() == HSSFCell.CELL_TYPE_ERROR){
+						dataRow.add(""+cell.getErrorCellValue());
 					}else{
 						dataRow.add(cell.getStringCellValue());
 					}						
diff --git a/src/main/java/com/taover/util/UtilHttpByOkHttp.java b/src/main/java/com/taover/util/UtilHttpByOkHttp.java
index 6b41fd3..f3941cd 100644
--- a/src/main/java/com/taover/util/UtilHttpByOkHttp.java
+++ b/src/main/java/com/taover/util/UtilHttpByOkHttp.java
@@ -95,7 +95,7 @@ public class UtilHttpByOkHttp {
 		return getHttpClient(url).newCall(request).execute().body().bytes();
 	}
 	
-	private static OkHttpClient getHttpClient(String url){
+	public static OkHttpClient getHttpClient(String url){
 		if(url.trim().toLowerCase().startsWith("https")){
 			return buildOkHttpClientForHttps();
 		}else{
@@ -103,6 +103,25 @@ public class UtilHttpByOkHttp {
 		}
 	}
 	
+	/**
+	 * 并发请求复用连接池，避免内存溢出
+	 * @param okHttpClient
+	 * @param url
+	 * @param headers
+	 * @param jsonStr
+	 * @return
+	 * @throws Exception
+	 */
+	public static String sendPostJson(OkHttpClient okHttpClient,String url, final Map<String, String> headers, String jsonStr) throws Exception{
+		//请求体
+		RequestBody requestBody = getReqeustBodyJson(jsonStr);
+		
+		//http头信息拼装
+		Request request = getRequestBuilder(url, headers).post(requestBody).build();
+		
+		return okHttpClient.newCall(request).execute().body().string();
+	}
+	
 	private static RequestBody getReqeustBody(Map<String, Object> params){
 		//表单信息拼装
 		FormBody.Builder builder = new FormBody.Builder(Charset.forName("UTF-8"));
--
libgit2 0.21.2