修改Excel工具

src/main/java/org/springblade/common/utils/ExcelWriteUtil.java

@@ -34,6 +34,10 @@ public class ExcelWriteUtil {
 	 */
 	public static <T> void writeToResponse(HttpServletResponse response, final String fileName, final String excelTitle, final Map<String, String> titleMap, final List<T> list, final Class<T> tClass) {
 		try {
+			//设置响应头
+			response.setContentType("application/octet-stream");
+			response.setHeader("Content-Disposition", String.format("attachment;filename=%s%s", fileName, ".xls"));
+
 			@Cleanup ExcelWriter writer = ExcelUtil.getWriter();
 			//写入标题
 			writer.merge(titleMap.size() - 1, excelTitle);
@@ -64,9 +68,6 @@ public class ExcelWriteUtil {
 				}
 				i++;
 			}
-			//设置响应头
-			response.setContentType("application/octet-stream");
-			response.setHeader("Content-Disposition", String.format("attachment;filename=%s%s", fileName, ".xls"));
 			writer.flush(response.getOutputStream(), true);
 		} catch (Exception e) {
 			log.error(e.getMessage());