我正在使用Apache Poi创建一个Excel文件，然后下载它。我的问题是，当我尝试打开文件时，我收到错误：
您尝试打开的文件＆＃39; workbook.xls＆＃39;，有所不同 格式比文件扩展名指定的格式。验证文件是否正确 没有损坏，并且在打开文件之前来自受信任的来源。做 你想现在打开文件吗？
当我单击是时，下载的文件有奇怪的字符，格式不正确。
如果我保存文件而不是下载文件，则会正确生成。
这是我的代码：
从angular：
调用servletNetWorkModel.sendRequestOpiniumServlet("review", metodoPeticion, dataEntrada, "EXCEL", function (response) {
if (response.Status === 'KO') {
NotificacionModel.mostrarNotificacion({
title: 'Opinium',
message: 'Error. No se ha podido exportar a Excel.',
size: 'large',//small,large
type: 'error',//error,notice,warning
duration: '2000'
});
}
callback();
});
sendRequestOpiniumServlet方法：
this.sendRequestOpiniumServlet = function (servicioPeticion, metodoPeticion, dataEntrada, tipoPeticion, callback, $files) {
//Reset de la request y ponemos los valores del ususario
self.resetValue();
//Ponemos datos de la peticion
self.request.Servicio = servicioPeticion;
self.request.Metodo = metodoPeticion;
self.request.Entrada = dataEntrada;
var tipo = "";
if (tipoPeticion === "JSON") {
tipo = "";
self.request.Tipo = tipo;
self.sendHttpJSON(self.servers.urlOpinium, function (data) {
callback(data);
});
} else if (tipoPeticion === "EXCEL") {
tipo = "EXCEL";
self.request.Tipo = tipo;
self.sendHttpExcel(self.servers.urlOpinium, function (data) {
callback(data);
});
} else if (tipoPeticion === "CSV") {
tipo = "CSV";
self.request.Tipo = tipo;
var nombreCSV = servicioPeticion;
self.sendHttpCSV(nombreCSV, self.servers.urlOpinium, function (data) {
callback(data);
});
} else if (tipoPeticion === "IMG") {
tipo = "IMG";
self.request.Tipo = tipo;
self.sendHttpIMG(self.servers.urlOpinium, $files, function (data) {
callback(data);
});
}
};
netWorkModel.js中的sendHttpExcel方法：
this.sendHttpExcel = function (urlService, callback) {
$http({
method: self.servers.method, url: urlService,
data: JSON.stringify(self.request),
headers: {'Content-Type': 'application/x-www-form-urlencoded'}
}).success(function (data, status, headers, cfg) {
if (DescargaExcelModel.createExcel('bookwork', data)) {
NotificacionModel.mostrarNotificacion({
title: 'Intranet: Exportación',
message: 'Fichero exportado correctamente',
size: 'large', //small,large
type: 'notice', //error,notice,warning
duration: '5000'
});
callback(true);
} else {
NotificacionModel.mostrarNotificacion({
title: 'Intranet: Exportación',
message: 'Error en el contenido del fichero',
size: 'large', //small,large
type: 'error', //error,notice,warning
duration: '5000'
});
callback(false);
}
}).error(function (data, status, headers, cfg) {
NotificacionModel.mostrarNotificacion({
title: 'Servidor: ' + urlService,
message: 'Error en la conexión con el servidor',
size: 'xlarge', //small,large,xlarge
type: 'error', //error,notice,warning
duration: '5000'
});
callback(false);
});
};
DescargaExcelModel.js中的createExcel方法：
angular.module("app.utils").service("DescargaExcelModel", ['$timeout', function($timeout) {
var self = this;
this.element = angular.element( '#link_exportar_file_csv_temp' );
this.setElement = function(elem) {
self.element = elem;
};
this.excelToURL = function(content) {
var blob;
blob = new Blob(["\ufeff",content], {type: 'application/vnd.ms-excel;charset=UTF-8',encoding:"UTF-8"});
return (window.URL || window.webkitURL).createObjectURL(blob);
};
this.sanitizeExcelName = function(name) {
if (/^[A-Za-z0-9]+\.xls$/.test(name)) {
return name;
}
if (/^[A-Za-z0-9]+/.test(name)) {
return name + ".xls";
} else {
return "file.xls";
}
};
this.revoke = function(url) {
return (window.URL || window.webkitURL).revokeObjectURL(url);
};
this.on = function(ele) {
var e = document.createEvent("MouseEvent");
e.initMouseEvent("click", false, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
ele.dispatchEvent(e);
};
this.createExcel = function(titleFile, dataExcel) {
var a_href, content, title, url;
content = dataExcel;
title = titleFile;
if (!(content !== null) && !(title !== null)) {
return false;
}
title = self.sanitizeExcelName(title);
url = self.excelToURL(content);
self.element.append("<a download=\"" + title + "\" href=\"" + url + "\"></a>");
a_href = self.element.find('a')[0];
self.on(a_href);
// $timeout(function() {
// self.revoke(url);
// });
//
self.element[0].removeChild(a_href);
// angular.element("#link_exportar_file_csv_temp").removeChild(a_href);
return true;
};
}]);
我的servlet代码：
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
.
.
.
response.setContentType("application/vnd.ms-excel");
response.setHeader("Content-Disposition", "attachment; filename=bookwork.xls");
ExportUtils.convertToWorkBook(request, response, respuesta.getDatos());
.
.
.
}
ExportUtils.java中的convertToWorkBook方法：
public static void convertToWorkBook(HttpServletRequest request, HttpServletResponse response, List<Object> data) {
OutputStream out = response.getOutputStream();
Workbook workbook = new HSSFWorkbook();
// ... Here i create my excel workbook
workbook.write(out);
workbook.close();
out.flush();
out.close();
}
我做错了什么？