我在
springboot应用程序中有我的后端,从那里我返回一个.csv文件
@RequestMapping(value = "/downloadCSV")
public void downloadCSV(HttpServletResponse response) throws IOException {
String csvFileName = "books.csv";
response.setContentType("text/csv");
// creates mock data
String headerKey = "Content-disposition";
String headerValue = String.format("attachment; filename=\"%s\"",csvFileName);
response.setHeader(headerKey,headerValue);
Book book1 = new Book("Effective Java","Java Best Practices","Joshua Bloch","Addision-Wesley","0321356683","05/08/2008",38);
Book book2 = new Book("Head First Java","Java for Beginners","Kathy Sierra & Bert Bates","O'Reilly Media","02/09/2005",30);
Book book3 = new Book("Thinking in Java","Java Core In-depth","Bruce Eckel","Prentice Hall","0131872486","02/26/2006",45);
Book book4 = new Book("Java Generics and Collections","Comprehensive guide to generics and collections","Naftalin & Philip Wadler","0596527756","10/24/2006",27);
List<Book> listBooks = Arrays.asList(book1,book2,book3,book4);
// uses the Super CSV API to generate CSV data from the model data
ICsvBeanWriter csvWriter = new CsvBeanWriter(response.getWriter(),CsvPreference.STANDARD_PREFERENCE);
String[] header = { "Title","Description","Author","Publisher","isbn","PublishedDate","Price" };
csvWriter.writeHeader(header);
for (Book aBook : listBooks) {
csvWriter.write(aBook,header);
}
csvWriter.close();
}
When i am hitting the URL in browser csv file is getting downloaded.
现在我试图从我的角度2应用程序中点击此URL,代码是这样的：
零件：
exportCSV() {
console.log('export csv called');
this.csvservice.getCSVReport().subscribe(data => this.downloadFile(data)),//console.log(data),error => console.log('Error downloading the file.'),() => console.info('OK');
}
downloadFile(data: any) {
let parsedResponse = data.text();
let blob = new Blob([parsedResponse],{ type: 'text/csv' });
let url = window.URL.createObjectURL(blob);
window.open(url);
}
服务：
getCSVReport() {
return this.http.get(this.config.importCSVApiUrl);
}
我正在下载文件,但它像
Actually it should be Book.csv
请指导我缺少的东西.
有一种解决方法,但您需要创建一个< a>页面上的元素.调用revokeObjectURL清除内存：
downloadFile(data: any) {
let parsedResponse = data.text();
let blob = new Blob([parsedResponse],{ type: 'text/csv' });
let url = window.URL.createObjectURL(blob);
if(navigator.msSaveOrOpenBlob) {
navigator.msSaveBlob(blob,'Book.csv');
} else {
let a = document.createElement('a');
a.href = url;
a.download = 'Book.csv';
document.body.appendChild(a);
a.click();
document.body.removeChild(a);
}
window.URL.revokeObjectURL(url);
}