fixed findbugs

weixin4j-base/src/main/java/com/foxinmy/weixin4j/http/HttpEntityRequest.java

@@ -12,5 +12,7 @@ import com.foxinmy.weixin4j.http.entity.HttpEntity;
  * @see
  */
 public abstract class HttpEntityRequest extends AbstractHttpRequest {
+	public abstract void setEntity(HttpEntity entity);
+
 	public abstract HttpEntity getEntity();
 }

weixin4j-base/src/main/java/com/foxinmy/weixin4j/http/HttpPost.java

@@ -42,7 +42,8 @@ public class HttpPost extends HttpEntityRequest {
 		return entity;
 	}
 
-	public void setEntity(HttpEntity httpEntity) {
-		this.entity = httpEntity;
+	@Override
+	public void setEntity(HttpEntity entity) {
+		this.entity = entity;
 	}
 }