How to download xls file with Angular and Spring Rest Service? - angularjs

Question

I created a factory in angular to call a spring rest service to download xls file.
this is my factory:
angular.module('app')
.factory('SportsbookServiceCustom', function ($http) {
return {
exportToXLS: function () {
return $http.get('api/sportsbooks/downloadXLS').then(function (response) {
return response.data;
});
}
};
});
I have this code for my rest service:
#RequestMapping(value = "/sportsbooks/downloadXLS")
public void downloadXLS(HttpServletResponse response) {
Pageable pageable = new PageRequest(0, 20, Direction.ASC, "id");
Page<Sportsbook> page = sportsbookRepositoryCustom.findAll(pageable, null, null, null);
List<Sportsbook> sportsbookList = page.getContent();
HSSFWorkbook workbook = new HSSFWorkbook();
HSSFSheet sheet = workbook.createSheet("Sample sheet");
Map<String, Object[]> data = new HashMap<String, Object[]>();
data.put("1", new Object[] { "Emp No.", "Name", "Salary" });
data.put("2", new Object[] { 1d, "John", 1500000d });
data.put("3", new Object[] { 2d, "Sam", 800000d });
data.put("4", new Object[] { 3d, "Dean", 700000d });
Set<String> keyset = data.keySet();
int rownum = 0;
for (String key : keyset) {
Row row = sheet.createRow(rownum++);
Object[] objArr = data.get(key);
int cellnum = 0;
for (Object obj : objArr) {
Cell cell = row.createCell(cellnum++);
if (obj instanceof Date)
cell.setCellValue((Date) obj);
else if (obj instanceof Boolean)
cell.setCellValue((Boolean) obj);
else if (obj instanceof String)
cell.setCellValue((String) obj);
else if (obj instanceof Double)
cell.setCellValue((Double) obj);
}
}
if (workbook != null) {
// Writing file to outputstream
try {
InputStream fileInputStream = new ByteArrayInputStream(workbook.getBytes());
OutputStream output = response.getOutputStream();
response.reset();
response.setContentLength((int) (workbook.getBytes().length));
response.setContentType("application/vnd.ms-excel");
response.setHeader("Content-disposition", "attachment;filename=yourFileName.xls");
IOUtils.copyLarge(fileInputStream, output);
output.flush();
}
catch (IOException ex) {
ex.printStackTrace();
}
}
}
The code runs without error but downloading file isn't working. What is error?

Answer 1

Try with filesaver.js
Pass the Json from your Server side (here Spring)
<div id="exportable">
<table width="100%">
<thead>
<tr>
<th>Name</th>
<th>Email</th>
<th>DoB</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="item in items">
<td>{{item.name}}</td>
<td>{{item.email}}</td>
<td>{{item.dob | date:'MM/dd/yy'}}</td>
</tr>
</tbody>
</table>
</div>
in your angular controller you received items from server eg.below
$scope.items = [{
name: "John Smith",
email: "j.smith#example.com",
dob: "1985-10-10"
}, {
name: "Jane Smith",
email: "jane.smith#example.com",
dob: "1988-12-22"
}, {
name: "Jan Smith",
email: "jan.smith#example.com",
dob: "2010-01-02"
}, {
name: "Jake Smith",
email: "jake.smith#exmaple.com",
dob: "2009-03-21"
}, {
name: "Josh Smith",
email: "josh#example.com",
dob: "2011-12-12"
}, {
name: "Jessie Smith",
email: "jess#example.com",
dob: "2004-10-12"
}]
}
Add Button Export
<button ng-click="exportData()"> Export </button>
Define the function in controller
$scope.exportData = function () {
var blob = new Blob([document.getElementById('exportable').innerHTML], {
type: "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=utf-8"
});
saveAs(blob, "Report.xls");
};
Demo