AngularJS:如何在一个角度应用程序中显示BLOB(.pdf)?

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我一直试图显示pdf文件,这是我从$http.post回应。pdf必须显示在应用程序中使用<embed src>例如。

JS:

$http.post('/postUrlHere',{myParams}).success(function (response) {
 var file = new Blob([response], {type: 'application/pdf'});
 var fileURL = URL.createObjectURL(file);
 $scope.content = fileURL;
});

据我所知,fileURL创建一个临时的url,博客可以作为参考。

HTML:

<embed src="{{content}}" width="200" height="200"></embed>
提问于
用户回答回答于

首先,您需要设置responseTypearraybuffer

$http.post('/postUrlHere',{myParams}, {responseType:'arraybuffer'})
  .success(function (response) {
       var file = new Blob([response], {type: 'application/pdf'});
       var fileURL = URL.createObjectURL(file);
});

然后使用$sce:

$scope.content = $sce.trustAsResourceUrl(fileURL);

您现在可以嵌入您的pdf:

<embed ng-src="{{content}}" style="width:200px;height:200px;"></embed>
用户回答回答于

我使用AngularJS v1.3.4

HTML:

<button ng-click="downloadPdf()" class="btn btn-primary">download PDF</button>

JS控制器:

'use strict';
angular.module('xxxxxxxxApp')
    .controller('xxxxController', function ($scope, xxxxServicePDF) {
        $scope.downloadPdf = function () {
            var fileName = "test.pdf";
            var a = document.createElement("a");
            document.body.appendChild(a);
            a.style = "display: none";
            xxxxServicePDF.downloadPdf().then(function (result) {
                var file = new Blob([result.data], {type: 'application/pdf'});
                var fileURL = window.URL.createObjectURL(file);
                a.href = fileURL;
                a.download = fileName;
                a.click();
            });
        };
});

JS服务:

angular.module('xxxxxxxxApp')
    .factory('xxxxServicePDF', function ($http) {
        return {
            downloadPdf: function () {
            return $http.get('api/downloadPDF', { responseType: 'arraybuffer' }).then(function (response) {
                return response;
            });
        }
    };
});

JavaREST Web服务-SpringMVC:

@RequestMapping(value = "/downloadPDF", method = RequestMethod.GET, produces = "application/pdf")
    public ResponseEntity<byte[]> getPDF() {
        FileInputStream fileStream;
        try {
            fileStream = new FileInputStream(new File("C:\\xxxxx\\xxxxxx\\test.pdf"));
            byte[] contents = IOUtils.toByteArray(fileStream);
            HttpHeaders headers = new HttpHeaders();
            headers.setContentType(MediaType.parseMediaType("application/pdf"));
            String filename = "test.pdf";
            headers.setContentDispositionFormData(filename, filename);
            ResponseEntity<byte[]> response = new ResponseEntity<byte[]>(contents, headers, HttpStatus.OK);
            return response;
        } catch (FileNotFoundException e) {
           System.err.println(e);
        } catch (IOException e) {
            System.err.println(e);
        }
        return null;
    }

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