diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xuxueli/executor/sample/frameless/jobhandler/HttpJobHandler.java b/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xuxueli/executor/sample/frameless/jobhandler/HttpJobHandler.java
index eeb8e3c..ea44695 100644
--- a/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xuxueli/executor/sample/frameless/jobhandler/HttpJobHandler.java
+++ b/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xuxueli/executor/sample/frameless/jobhandler/HttpJobHandler.java
@@ -51,6 +51,7 @@
 			XxlJobLogger.log("method["+ method +"] invalid.");
 			return ReturnT.FAIL;
 		}
+		boolean isPostMethod = method.equals("POST");
 
 		// request
 		HttpURLConnection connection = null;
@@ -62,7 +63,7 @@
 
 			// connection setting
 			connection.setRequestMethod(method);
-			connection.setDoOutput(true);
+			connection.setDoOutput(isPostMethod);
 			connection.setDoInput(true);
 			connection.setUseCaches(false);
 			connection.setReadTimeout(5 * 1000);
@@ -75,7 +76,7 @@
 			connection.connect();
 
 			// data
-			if (data!=null && data.trim().length()>0) {
+			if (isPostMethod && data!=null && data.trim().length()>0) {
 				DataOutputStream dataOutputStream = new DataOutputStream(connection.getOutputStream());
 				dataOutputStream.write(data.getBytes("UTF-8"));
 				dataOutputStream.flush();

diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xuxueli/executor/sample/frameless/jobhandler/HttpJobHandler.java b/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xuxueli/executor/sample/frameless/jobhandler/HttpJobHandler.java
index eeb8e3c..ea44695 100644
--- a/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xuxueli/executor/sample/frameless/jobhandler/HttpJobHandler.java
+++ b/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xuxueli/executor/sample/frameless/jobhandler/HttpJobHandler.java
@@ -51,6 +51,7 @@
 			XxlJobLogger.log("method["+ method +"] invalid.");
 			return ReturnT.FAIL;
 		}
+		boolean isPostMethod = method.equals("POST");
 
 		// request
 		HttpURLConnection connection = null;
@@ -62,7 +63,7 @@
 
 			// connection setting
 			connection.setRequestMethod(method);
-			connection.setDoOutput(true);
+			connection.setDoOutput(isPostMethod);
 			connection.setDoInput(true);
 			connection.setUseCaches(false);
 			connection.setReadTimeout(5 * 1000);
@@ -75,7 +76,7 @@
 			connection.connect();
 
 			// data
-			if (data!=null && data.trim().length()>0) {
+			if (isPostMethod && data!=null && data.trim().length()>0) {
 				DataOutputStream dataOutputStream = new DataOutputStream(connection.getOutputStream());
 				dataOutputStream.write(data.getBytes("UTF-8"));
 				dataOutputStream.flush();
diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-jboot/src/main/java/com/xuxueli/executor/sample/jboot/jobhandler/HttpJobHandler.java b/xxl-job-executor-samples/xxl-job-executor-sample-jboot/src/main/java/com/xuxueli/executor/sample/jboot/jobhandler/HttpJobHandler.java
index 08a5d01..68a27b3 100644
--- a/xxl-job-executor-samples/xxl-job-executor-sample-jboot/src/main/java/com/xuxueli/executor/sample/jboot/jobhandler/HttpJobHandler.java
+++ b/xxl-job-executor-samples/xxl-job-executor-sample-jboot/src/main/java/com/xuxueli/executor/sample/jboot/jobhandler/HttpJobHandler.java
@@ -51,8 +51,9 @@
             XxlJobLogger.log("method["+ method +"] invalid.");
             return ReturnT.FAIL;
         }
+        boolean isPostMethod = method.equals("POST");
 
-        // request
+                // request
         HttpURLConnection connection = null;
         BufferedReader bufferedReader = null;
         try {
@@ -62,7 +63,7 @@
 
             // connection setting
             connection.setRequestMethod(method);
-            connection.setDoOutput(true);
+            connection.setDoOutput(isPostMethod);
             connection.setDoInput(true);
             connection.setUseCaches(false);
             connection.setReadTimeout(5 * 1000);
@@ -75,7 +76,7 @@
             connection.connect();
 
             // data
-            if (data!=null && data.trim().length()>0) {
+            if (isPostMethod && data!=null && data.trim().length()>0) {
                 DataOutputStream dataOutputStream = new DataOutputStream(connection.getOutputStream());
                 dataOutputStream.write(data.getBytes("UTF-8"));
                 dataOutputStream.flush();

diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xuxueli/executor/sample/frameless/jobhandler/HttpJobHandler.java b/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xuxueli/executor/sample/frameless/jobhandler/HttpJobHandler.java
index eeb8e3c..ea44695 100644
--- a/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xuxueli/executor/sample/frameless/jobhandler/HttpJobHandler.java
+++ b/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xuxueli/executor/sample/frameless/jobhandler/HttpJobHandler.java
@@ -51,6 +51,7 @@
 			XxlJobLogger.log("method["+ method +"] invalid.");
 			return ReturnT.FAIL;
 		}
+		boolean isPostMethod = method.equals("POST");
 
 		// request
 		HttpURLConnection connection = null;
@@ -62,7 +63,7 @@
 
 			// connection setting
 			connection.setRequestMethod(method);
-			connection.setDoOutput(true);
+			connection.setDoOutput(isPostMethod);
 			connection.setDoInput(true);
 			connection.setUseCaches(false);
 			connection.setReadTimeout(5 * 1000);
@@ -75,7 +76,7 @@
 			connection.connect();
 
 			// data
-			if (data!=null && data.trim().length()>0) {
+			if (isPostMethod && data!=null && data.trim().length()>0) {
 				DataOutputStream dataOutputStream = new DataOutputStream(connection.getOutputStream());
 				dataOutputStream.write(data.getBytes("UTF-8"));
 				dataOutputStream.flush();
diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-jboot/src/main/java/com/xuxueli/executor/sample/jboot/jobhandler/HttpJobHandler.java b/xxl-job-executor-samples/xxl-job-executor-sample-jboot/src/main/java/com/xuxueli/executor/sample/jboot/jobhandler/HttpJobHandler.java
index 08a5d01..68a27b3 100644
--- a/xxl-job-executor-samples/xxl-job-executor-sample-jboot/src/main/java/com/xuxueli/executor/sample/jboot/jobhandler/HttpJobHandler.java
+++ b/xxl-job-executor-samples/xxl-job-executor-sample-jboot/src/main/java/com/xuxueli/executor/sample/jboot/jobhandler/HttpJobHandler.java
@@ -51,8 +51,9 @@
             XxlJobLogger.log("method["+ method +"] invalid.");
             return ReturnT.FAIL;
         }
+        boolean isPostMethod = method.equals("POST");
 
-        // request
+                // request
         HttpURLConnection connection = null;
         BufferedReader bufferedReader = null;
         try {
@@ -62,7 +63,7 @@
 
             // connection setting
             connection.setRequestMethod(method);
-            connection.setDoOutput(true);
+            connection.setDoOutput(isPostMethod);
             connection.setDoInput(true);
             connection.setUseCaches(false);
             connection.setReadTimeout(5 * 1000);
@@ -75,7 +76,7 @@
             connection.connect();
 
             // data
-            if (data!=null && data.trim().length()>0) {
+            if (isPostMethod && data!=null && data.trim().length()>0) {
                 DataOutputStream dataOutputStream = new DataOutputStream(connection.getOutputStream());
                 dataOutputStream.write(data.getBytes("UTF-8"));
                 dataOutputStream.flush();
diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-jfinal/src/main/java/com/xuxueli/executor/sample/jfinal/jobhandler/HttpJobHandler.java b/xxl-job-executor-samples/xxl-job-executor-sample-jfinal/src/main/java/com/xuxueli/executor/sample/jfinal/jobhandler/HttpJobHandler.java
index 414d8e2..ae1dbb6 100644
--- a/xxl-job-executor-samples/xxl-job-executor-sample-jfinal/src/main/java/com/xuxueli/executor/sample/jfinal/jobhandler/HttpJobHandler.java
+++ b/xxl-job-executor-samples/xxl-job-executor-sample-jfinal/src/main/java/com/xuxueli/executor/sample/jfinal/jobhandler/HttpJobHandler.java
@@ -51,6 +51,7 @@
             XxlJobLogger.log("method["+ method +"] invalid.");
             return ReturnT.FAIL;
         }
+        boolean isPostMethod = method.equals("POST");
 
         // request
         HttpURLConnection connection = null;
@@ -62,7 +63,7 @@
 
             // connection setting
             connection.setRequestMethod(method);
-            connection.setDoOutput(true);
+            connection.setDoOutput(isPostMethod);
             connection.setDoInput(true);
             connection.setUseCaches(false);
             connection.setReadTimeout(5 * 1000);
@@ -75,7 +76,7 @@
             connection.connect();
 
             // data
-            if (data!=null && data.trim().length()>0) {
+            if (isPostMethod && data!=null && data.trim().length()>0) {
                 DataOutputStream dataOutputStream = new DataOutputStream(connection.getOutputStream());
                 dataOutputStream.write(data.getBytes("UTF-8"));
                 dataOutputStream.flush();

diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xuxueli/executor/sample/frameless/jobhandler/HttpJobHandler.java b/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xuxueli/executor/sample/frameless/jobhandler/HttpJobHandler.java
index eeb8e3c..ea44695 100644
--- a/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xuxueli/executor/sample/frameless/jobhandler/HttpJobHandler.java
+++ b/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xuxueli/executor/sample/frameless/jobhandler/HttpJobHandler.java
@@ -51,6 +51,7 @@
 			XxlJobLogger.log("method["+ method +"] invalid.");
 			return ReturnT.FAIL;
 		}
+		boolean isPostMethod = method.equals("POST");
 
 		// request
 		HttpURLConnection connection = null;
@@ -62,7 +63,7 @@
 
 			// connection setting
 			connection.setRequestMethod(method);
-			connection.setDoOutput(true);
+			connection.setDoOutput(isPostMethod);
 			connection.setDoInput(true);
 			connection.setUseCaches(false);
 			connection.setReadTimeout(5 * 1000);
@@ -75,7 +76,7 @@
 			connection.connect();
 
 			// data
-			if (data!=null && data.trim().length()>0) {
+			if (isPostMethod && data!=null && data.trim().length()>0) {
 				DataOutputStream dataOutputStream = new DataOutputStream(connection.getOutputStream());
 				dataOutputStream.write(data.getBytes("UTF-8"));
 				dataOutputStream.flush();
diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-jboot/src/main/java/com/xuxueli/executor/sample/jboot/jobhandler/HttpJobHandler.java b/xxl-job-executor-samples/xxl-job-executor-sample-jboot/src/main/java/com/xuxueli/executor/sample/jboot/jobhandler/HttpJobHandler.java
index 08a5d01..68a27b3 100644
--- a/xxl-job-executor-samples/xxl-job-executor-sample-jboot/src/main/java/com/xuxueli/executor/sample/jboot/jobhandler/HttpJobHandler.java
+++ b/xxl-job-executor-samples/xxl-job-executor-sample-jboot/src/main/java/com/xuxueli/executor/sample/jboot/jobhandler/HttpJobHandler.java
@@ -51,8 +51,9 @@
             XxlJobLogger.log("method["+ method +"] invalid.");
             return ReturnT.FAIL;
         }
+        boolean isPostMethod = method.equals("POST");
 
-        // request
+                // request
         HttpURLConnection connection = null;
         BufferedReader bufferedReader = null;
         try {
@@ -62,7 +63,7 @@
 
             // connection setting
             connection.setRequestMethod(method);
-            connection.setDoOutput(true);
+            connection.setDoOutput(isPostMethod);
             connection.setDoInput(true);
             connection.setUseCaches(false);
             connection.setReadTimeout(5 * 1000);
@@ -75,7 +76,7 @@
             connection.connect();
 
             // data
-            if (data!=null && data.trim().length()>0) {
+            if (isPostMethod && data!=null && data.trim().length()>0) {
                 DataOutputStream dataOutputStream = new DataOutputStream(connection.getOutputStream());
                 dataOutputStream.write(data.getBytes("UTF-8"));
                 dataOutputStream.flush();
diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-jfinal/src/main/java/com/xuxueli/executor/sample/jfinal/jobhandler/HttpJobHandler.java b/xxl-job-executor-samples/xxl-job-executor-sample-jfinal/src/main/java/com/xuxueli/executor/sample/jfinal/jobhandler/HttpJobHandler.java
index 414d8e2..ae1dbb6 100644
--- a/xxl-job-executor-samples/xxl-job-executor-sample-jfinal/src/main/java/com/xuxueli/executor/sample/jfinal/jobhandler/HttpJobHandler.java
+++ b/xxl-job-executor-samples/xxl-job-executor-sample-jfinal/src/main/java/com/xuxueli/executor/sample/jfinal/jobhandler/HttpJobHandler.java
@@ -51,6 +51,7 @@
             XxlJobLogger.log("method["+ method +"] invalid.");
             return ReturnT.FAIL;
         }
+        boolean isPostMethod = method.equals("POST");
 
         // request
         HttpURLConnection connection = null;
@@ -62,7 +63,7 @@
 
             // connection setting
             connection.setRequestMethod(method);
-            connection.setDoOutput(true);
+            connection.setDoOutput(isPostMethod);
             connection.setDoInput(true);
             connection.setUseCaches(false);
             connection.setReadTimeout(5 * 1000);
@@ -75,7 +76,7 @@
             connection.connect();
 
             // data
-            if (data!=null && data.trim().length()>0) {
+            if (isPostMethod && data!=null && data.trim().length()>0) {
                 DataOutputStream dataOutputStream = new DataOutputStream(connection.getOutputStream());
                 dataOutputStream.write(data.getBytes("UTF-8"));
                 dataOutputStream.flush();
diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-nutz/src/main/java/com/xuxueli/executor/sample/nutz/jobhandler/HttpJobHandler.java b/xxl-job-executor-samples/xxl-job-executor-sample-nutz/src/main/java/com/xuxueli/executor/sample/nutz/jobhandler/HttpJobHandler.java
index c09dd59..837000b 100644
--- a/xxl-job-executor-samples/xxl-job-executor-sample-nutz/src/main/java/com/xuxueli/executor/sample/nutz/jobhandler/HttpJobHandler.java
+++ b/xxl-job-executor-samples/xxl-job-executor-sample-nutz/src/main/java/com/xuxueli/executor/sample/nutz/jobhandler/HttpJobHandler.java
@@ -51,6 +51,7 @@
             XxlJobLogger.log("method["+ method +"] invalid.");
             return ReturnT.FAIL;
         }
+        boolean isPostMethod = method.equals("POST");
 
         // request
         HttpURLConnection connection = null;
@@ -62,7 +63,7 @@
 
             // connection setting
             connection.setRequestMethod(method);
-            connection.setDoOutput(true);
+            connection.setDoOutput(isPostMethod);
             connection.setDoInput(true);
             connection.setUseCaches(false);
             connection.setReadTimeout(5 * 1000);
@@ -75,7 +76,7 @@
             connection.connect();
 
             // data
-            if (data!=null && data.trim().length()>0) {
+            if (isPostMethod && data!=null && data.trim().length()>0) {
                 DataOutputStream dataOutputStream = new DataOutputStream(connection.getOutputStream());
                 dataOutputStream.write(data.getBytes("UTF-8"));
                 dataOutputStream.flush();

diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xuxueli/executor/sample/frameless/jobhandler/HttpJobHandler.java b/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xuxueli/executor/sample/frameless/jobhandler/HttpJobHandler.java
index eeb8e3c..ea44695 100644
--- a/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xuxueli/executor/sample/frameless/jobhandler/HttpJobHandler.java
+++ b/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xuxueli/executor/sample/frameless/jobhandler/HttpJobHandler.java
@@ -51,6 +51,7 @@
 			XxlJobLogger.log("method["+ method +"] invalid.");
 			return ReturnT.FAIL;
 		}
+		boolean isPostMethod = method.equals("POST");
 
 		// request
 		HttpURLConnection connection = null;
@@ -62,7 +63,7 @@
 
 			// connection setting
 			connection.setRequestMethod(method);
-			connection.setDoOutput(true);
+			connection.setDoOutput(isPostMethod);
 			connection.setDoInput(true);
 			connection.setUseCaches(false);
 			connection.setReadTimeout(5 * 1000);
@@ -75,7 +76,7 @@
 			connection.connect();
 
 			// data
-			if (data!=null && data.trim().length()>0) {
+			if (isPostMethod && data!=null && data.trim().length()>0) {
 				DataOutputStream dataOutputStream = new DataOutputStream(connection.getOutputStream());
 				dataOutputStream.write(data.getBytes("UTF-8"));
 				dataOutputStream.flush();
diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-jboot/src/main/java/com/xuxueli/executor/sample/jboot/jobhandler/HttpJobHandler.java b/xxl-job-executor-samples/xxl-job-executor-sample-jboot/src/main/java/com/xuxueli/executor/sample/jboot/jobhandler/HttpJobHandler.java
index 08a5d01..68a27b3 100644
--- a/xxl-job-executor-samples/xxl-job-executor-sample-jboot/src/main/java/com/xuxueli/executor/sample/jboot/jobhandler/HttpJobHandler.java
+++ b/xxl-job-executor-samples/xxl-job-executor-sample-jboot/src/main/java/com/xuxueli/executor/sample/jboot/jobhandler/HttpJobHandler.java
@@ -51,8 +51,9 @@
             XxlJobLogger.log("method["+ method +"] invalid.");
             return ReturnT.FAIL;
         }
+        boolean isPostMethod = method.equals("POST");
 
-        // request
+                // request
         HttpURLConnection connection = null;
         BufferedReader bufferedReader = null;
         try {
@@ -62,7 +63,7 @@
 
             // connection setting
             connection.setRequestMethod(method);
-            connection.setDoOutput(true);
+            connection.setDoOutput(isPostMethod);
             connection.setDoInput(true);
             connection.setUseCaches(false);
             connection.setReadTimeout(5 * 1000);
@@ -75,7 +76,7 @@
             connection.connect();
 
             // data
-            if (data!=null && data.trim().length()>0) {
+            if (isPostMethod && data!=null && data.trim().length()>0) {
                 DataOutputStream dataOutputStream = new DataOutputStream(connection.getOutputStream());
                 dataOutputStream.write(data.getBytes("UTF-8"));
                 dataOutputStream.flush();
diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-jfinal/src/main/java/com/xuxueli/executor/sample/jfinal/jobhandler/HttpJobHandler.java b/xxl-job-executor-samples/xxl-job-executor-sample-jfinal/src/main/java/com/xuxueli/executor/sample/jfinal/jobhandler/HttpJobHandler.java
index 414d8e2..ae1dbb6 100644
--- a/xxl-job-executor-samples/xxl-job-executor-sample-jfinal/src/main/java/com/xuxueli/executor/sample/jfinal/jobhandler/HttpJobHandler.java
+++ b/xxl-job-executor-samples/xxl-job-executor-sample-jfinal/src/main/java/com/xuxueli/executor/sample/jfinal/jobhandler/HttpJobHandler.java
@@ -51,6 +51,7 @@
             XxlJobLogger.log("method["+ method +"] invalid.");
             return ReturnT.FAIL;
         }
+        boolean isPostMethod = method.equals("POST");
 
         // request
         HttpURLConnection connection = null;
@@ -62,7 +63,7 @@
 
             // connection setting
             connection.setRequestMethod(method);
-            connection.setDoOutput(true);
+            connection.setDoOutput(isPostMethod);
             connection.setDoInput(true);
             connection.setUseCaches(false);
             connection.setReadTimeout(5 * 1000);
@@ -75,7 +76,7 @@
             connection.connect();
 
             // data
-            if (data!=null && data.trim().length()>0) {
+            if (isPostMethod && data!=null && data.trim().length()>0) {
                 DataOutputStream dataOutputStream = new DataOutputStream(connection.getOutputStream());
                 dataOutputStream.write(data.getBytes("UTF-8"));
                 dataOutputStream.flush();
diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-nutz/src/main/java/com/xuxueli/executor/sample/nutz/jobhandler/HttpJobHandler.java b/xxl-job-executor-samples/xxl-job-executor-sample-nutz/src/main/java/com/xuxueli/executor/sample/nutz/jobhandler/HttpJobHandler.java
index c09dd59..837000b 100644
--- a/xxl-job-executor-samples/xxl-job-executor-sample-nutz/src/main/java/com/xuxueli/executor/sample/nutz/jobhandler/HttpJobHandler.java
+++ b/xxl-job-executor-samples/xxl-job-executor-sample-nutz/src/main/java/com/xuxueli/executor/sample/nutz/jobhandler/HttpJobHandler.java
@@ -51,6 +51,7 @@
             XxlJobLogger.log("method["+ method +"] invalid.");
             return ReturnT.FAIL;
         }
+        boolean isPostMethod = method.equals("POST");
 
         // request
         HttpURLConnection connection = null;
@@ -62,7 +63,7 @@
 
             // connection setting
             connection.setRequestMethod(method);
-            connection.setDoOutput(true);
+            connection.setDoOutput(isPostMethod);
             connection.setDoInput(true);
             connection.setUseCaches(false);
             connection.setReadTimeout(5 * 1000);
@@ -75,7 +76,7 @@
             connection.connect();
 
             // data
-            if (data!=null && data.trim().length()>0) {
+            if (isPostMethod && data!=null && data.trim().length()>0) {
                 DataOutputStream dataOutputStream = new DataOutputStream(connection.getOutputStream());
                 dataOutputStream.write(data.getBytes("UTF-8"));
                 dataOutputStream.flush();
diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/java/com/xxl/job/executor/service/jobhandler/SampleXxlJob.java b/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/java/com/xxl/job/executor/service/jobhandler/SampleXxlJob.java
index bde0669..666d2d3 100644
--- a/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/java/com/xxl/job/executor/service/jobhandler/SampleXxlJob.java
+++ b/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/java/com/xxl/job/executor/service/jobhandler/SampleXxlJob.java
@@ -151,6 +151,7 @@
             XxlJobLogger.log("method["+ method +"] invalid.");
             return ReturnT.FAIL;
         }
+        boolean isPostMethod = method.equals("POST");
 
         // request
         HttpURLConnection connection = null;
@@ -162,7 +163,7 @@
 
             // connection setting
             connection.setRequestMethod(method);
-            connection.setDoOutput(true);
+            connection.setDoOutput(isPostMethod);
             connection.setDoInput(true);
             connection.setUseCaches(false);
             connection.setReadTimeout(5 * 1000);
@@ -175,7 +176,7 @@
             connection.connect();
 
             // data
-            if (data!=null && data.trim().length()>0) {
+            if (isPostMethod && data!=null && data.trim().length()>0) {
                 DataOutputStream dataOutputStream = new DataOutputStream(connection.getOutputStream());
                 dataOutputStream.write(data.getBytes("UTF-8"));
                 dataOutputStream.flush();

diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xuxueli/executor/sample/frameless/jobhandler/HttpJobHandler.java b/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xuxueli/executor/sample/frameless/jobhandler/HttpJobHandler.java
index eeb8e3c..ea44695 100644
--- a/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xuxueli/executor/sample/frameless/jobhandler/HttpJobHandler.java
+++ b/xxl-job-executor-samples/xxl-job-executor-sample-frameless/src/main/java/com/xuxueli/executor/sample/frameless/jobhandler/HttpJobHandler.java
@@ -51,6 +51,7 @@
 			XxlJobLogger.log("method["+ method +"] invalid.");
 			return ReturnT.FAIL;
 		}
+		boolean isPostMethod = method.equals("POST");
 
 		// request
 		HttpURLConnection connection = null;
@@ -62,7 +63,7 @@
 
 			// connection setting
 			connection.setRequestMethod(method);
-			connection.setDoOutput(true);
+			connection.setDoOutput(isPostMethod);
 			connection.setDoInput(true);
 			connection.setUseCaches(false);
 			connection.setReadTimeout(5 * 1000);
@@ -75,7 +76,7 @@
 			connection.connect();
 
 			// data
-			if (data!=null && data.trim().length()>0) {
+			if (isPostMethod && data!=null && data.trim().length()>0) {
 				DataOutputStream dataOutputStream = new DataOutputStream(connection.getOutputStream());
 				dataOutputStream.write(data.getBytes("UTF-8"));
 				dataOutputStream.flush();
diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-jboot/src/main/java/com/xuxueli/executor/sample/jboot/jobhandler/HttpJobHandler.java b/xxl-job-executor-samples/xxl-job-executor-sample-jboot/src/main/java/com/xuxueli/executor/sample/jboot/jobhandler/HttpJobHandler.java
index 08a5d01..68a27b3 100644
--- a/xxl-job-executor-samples/xxl-job-executor-sample-jboot/src/main/java/com/xuxueli/executor/sample/jboot/jobhandler/HttpJobHandler.java
+++ b/xxl-job-executor-samples/xxl-job-executor-sample-jboot/src/main/java/com/xuxueli/executor/sample/jboot/jobhandler/HttpJobHandler.java
@@ -51,8 +51,9 @@
             XxlJobLogger.log("method["+ method +"] invalid.");
             return ReturnT.FAIL;
         }
+        boolean isPostMethod = method.equals("POST");
 
-        // request
+                // request
         HttpURLConnection connection = null;
         BufferedReader bufferedReader = null;
         try {
@@ -62,7 +63,7 @@
 
             // connection setting
             connection.setRequestMethod(method);
-            connection.setDoOutput(true);
+            connection.setDoOutput(isPostMethod);
             connection.setDoInput(true);
             connection.setUseCaches(false);
             connection.setReadTimeout(5 * 1000);
@@ -75,7 +76,7 @@
             connection.connect();
 
             // data
-            if (data!=null && data.trim().length()>0) {
+            if (isPostMethod && data!=null && data.trim().length()>0) {
                 DataOutputStream dataOutputStream = new DataOutputStream(connection.getOutputStream());
                 dataOutputStream.write(data.getBytes("UTF-8"));
                 dataOutputStream.flush();
diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-jfinal/src/main/java/com/xuxueli/executor/sample/jfinal/jobhandler/HttpJobHandler.java b/xxl-job-executor-samples/xxl-job-executor-sample-jfinal/src/main/java/com/xuxueli/executor/sample/jfinal/jobhandler/HttpJobHandler.java
index 414d8e2..ae1dbb6 100644
--- a/xxl-job-executor-samples/xxl-job-executor-sample-jfinal/src/main/java/com/xuxueli/executor/sample/jfinal/jobhandler/HttpJobHandler.java
+++ b/xxl-job-executor-samples/xxl-job-executor-sample-jfinal/src/main/java/com/xuxueli/executor/sample/jfinal/jobhandler/HttpJobHandler.java
@@ -51,6 +51,7 @@
             XxlJobLogger.log("method["+ method +"] invalid.");
             return ReturnT.FAIL;
         }
+        boolean isPostMethod = method.equals("POST");
 
         // request
         HttpURLConnection connection = null;
@@ -62,7 +63,7 @@
 
             // connection setting
             connection.setRequestMethod(method);
-            connection.setDoOutput(true);
+            connection.setDoOutput(isPostMethod);
             connection.setDoInput(true);
             connection.setUseCaches(false);
             connection.setReadTimeout(5 * 1000);
@@ -75,7 +76,7 @@
             connection.connect();
 
             // data
-            if (data!=null && data.trim().length()>0) {
+            if (isPostMethod && data!=null && data.trim().length()>0) {
                 DataOutputStream dataOutputStream = new DataOutputStream(connection.getOutputStream());
                 dataOutputStream.write(data.getBytes("UTF-8"));
                 dataOutputStream.flush();
diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-nutz/src/main/java/com/xuxueli/executor/sample/nutz/jobhandler/HttpJobHandler.java b/xxl-job-executor-samples/xxl-job-executor-sample-nutz/src/main/java/com/xuxueli/executor/sample/nutz/jobhandler/HttpJobHandler.java
index c09dd59..837000b 100644
--- a/xxl-job-executor-samples/xxl-job-executor-sample-nutz/src/main/java/com/xuxueli/executor/sample/nutz/jobhandler/HttpJobHandler.java
+++ b/xxl-job-executor-samples/xxl-job-executor-sample-nutz/src/main/java/com/xuxueli/executor/sample/nutz/jobhandler/HttpJobHandler.java
@@ -51,6 +51,7 @@
             XxlJobLogger.log("method["+ method +"] invalid.");
             return ReturnT.FAIL;
         }
+        boolean isPostMethod = method.equals("POST");
 
         // request
         HttpURLConnection connection = null;
@@ -62,7 +63,7 @@
 
             // connection setting
             connection.setRequestMethod(method);
-            connection.setDoOutput(true);
+            connection.setDoOutput(isPostMethod);
             connection.setDoInput(true);
             connection.setUseCaches(false);
             connection.setReadTimeout(5 * 1000);
@@ -75,7 +76,7 @@
             connection.connect();
 
             // data
-            if (data!=null && data.trim().length()>0) {
+            if (isPostMethod && data!=null && data.trim().length()>0) {
                 DataOutputStream dataOutputStream = new DataOutputStream(connection.getOutputStream());
                 dataOutputStream.write(data.getBytes("UTF-8"));
                 dataOutputStream.flush();
diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/java/com/xxl/job/executor/service/jobhandler/SampleXxlJob.java b/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/java/com/xxl/job/executor/service/jobhandler/SampleXxlJob.java
index bde0669..666d2d3 100644
--- a/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/java/com/xxl/job/executor/service/jobhandler/SampleXxlJob.java
+++ b/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/java/com/xxl/job/executor/service/jobhandler/SampleXxlJob.java
@@ -151,6 +151,7 @@
             XxlJobLogger.log("method["+ method +"] invalid.");
             return ReturnT.FAIL;
         }
+        boolean isPostMethod = method.equals("POST");
 
         // request
         HttpURLConnection connection = null;
@@ -162,7 +163,7 @@
 
             // connection setting
             connection.setRequestMethod(method);
-            connection.setDoOutput(true);
+            connection.setDoOutput(isPostMethod);
             connection.setDoInput(true);
             connection.setUseCaches(false);
             connection.setReadTimeout(5 * 1000);
@@ -175,7 +176,7 @@
             connection.connect();
 
             // data
-            if (data!=null && data.trim().length()>0) {
+            if (isPostMethod && data!=null && data.trim().length()>0) {
                 DataOutputStream dataOutputStream = new DataOutputStream(connection.getOutputStream());
                 dataOutputStream.write(data.getBytes("UTF-8"));
                 dataOutputStream.flush();
diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-springboot/src/main/java/com/xxl/job/executor/service/jobhandler/SampleXxlJob.java b/xxl-job-executor-samples/xxl-job-executor-sample-springboot/src/main/java/com/xxl/job/executor/service/jobhandler/SampleXxlJob.java
index bde0669..666d2d3 100644
--- a/xxl-job-executor-samples/xxl-job-executor-sample-springboot/src/main/java/com/xxl/job/executor/service/jobhandler/SampleXxlJob.java
+++ b/xxl-job-executor-samples/xxl-job-executor-sample-springboot/src/main/java/com/xxl/job/executor/service/jobhandler/SampleXxlJob.java
@@ -151,6 +151,7 @@
             XxlJobLogger.log("method["+ method +"] invalid.");
             return ReturnT.FAIL;
         }
+        boolean isPostMethod = method.equals("POST");
 
         // request
         HttpURLConnection connection = null;
@@ -162,7 +163,7 @@
 
             // connection setting
             connection.setRequestMethod(method);
-            connection.setDoOutput(true);
+            connection.setDoOutput(isPostMethod);
             connection.setDoInput(true);
             connection.setUseCaches(false);
             connection.setReadTimeout(5 * 1000);
@@ -175,7 +176,7 @@
             connection.connect();
 
             // data
-            if (data!=null && data.trim().length()>0) {
+            if (isPostMethod && data!=null && data.trim().length()>0) {
                 DataOutputStream dataOutputStream = new DataOutputStream(connection.getOutputStream());
                 dataOutputStream.write(data.getBytes("UTF-8"));
                 dataOutputStream.flush();