#1300 Add right alignment function in sql email content (#1542)

* modify FileUtils.readFile2Str

* #1300 Add right alignment function in sql email content

* cancel formatted for alert_mail_template.ftl

dolphinscheduler-alert/src/main/java/org/apache/dolphinscheduler/alert/utils/ExcelUtils.java

@@ -20,6 +20,8 @@ import org.apache.poi.hssf.usermodel.HSSFCell;
 import org.apache.poi.hssf.usermodel.HSSFRow;
 import org.apache.poi.hssf.usermodel.HSSFSheet;
 import org.apache.poi.hssf.usermodel.HSSFWorkbook;
+import org.apache.poi.ss.usermodel.CellStyle;
+import org.apache.poi.ss.usermodel.HorizontalAlignment;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -71,10 +73,14 @@ public class ExcelUtils {
                //set the height of the first line
                row.setHeight((short)500);
 
+               //set Horizontal right
+               CellStyle cellStyle = wb.createCellStyle();
+               cellStyle.setAlignment(HorizontalAlignment.RIGHT);
 
                //setting excel headers
                for (int i = 0; i < headerList.size(); i++) {
                    HSSFCell cell = row.createCell(i);
+                   cell.setCellStyle(cellStyle);
                    cell.setCellValue(headerList.get(i));
                }
 
@@ -88,6 +94,7 @@ public class ExcelUtils {
                    rowIndex++;
                    for (int j = 0 ; j < values.length ; j++){
                        HSSFCell cell1 = row.createCell(j);
+                       cell1.setCellStyle(cellStyle);
                        cell1.setCellValue(String.valueOf(values[j]));
                    }
                }