Question

我想用spring在浏览器中显示pdf。我的问题是浏览器下载文件而不是显示它。这是我的代码：

@RequestMapping(value="/getpdf1", method=RequestMethod.GET)
public ResponseEntity<byte[]> getPDF1() {


    HttpHeaders headers = new HttpHeaders();

    headers.setContentType(MediaType.parseMediaType("application/pdf"));
    String filename = "pdf1.pdf";

    headers.add("content-disposition", "inline;filename=" + filename);

    headers.setContentDispositionFormData(filename, filename);
    headers.setCacheControl("must-revalidate, post-check=0, pre-check=0");
    ResponseEntity<byte[]> response = new ResponseEntity<byte[]>(pdf1Bytes, headers, HttpStatus.OK);
    return response;
}

我期待着你的回答！感谢

Answer 1

你差不多完成了。只需删除

headers.setContentDispositionFormData(filename, filename);

来自您的代码块的

。将multipart / form-data发布到服务器时应该使用它。

Answer 2

内容处置，以控制下载或在浏览器中查看

在浏览器中查看

trait Foo[F, T] {
  def aa(foo: F): List[T]
  def maybe(foo: F): Option[T]
  def instance(aa: List[T], maybe: Option[T]): F
}

class Bar(val aa: List[String], val maybe: Option[String]) {
  override def toString = s"Bar($aa, $maybe)"
}

object Bar {
  implicit val barFoo = new Foo[Bar, String] {
    def aa(foo: Bar): List[String] = foo.aa
    def maybe(foo: Bar): Option[String] = foo.maybe
    def instance(aa: List[String], maybe:Option[String]):Bar = new Bar(aa, maybe)
  }
}

implicit class FooOps[A, T](fooable:A)(implicit foo:Foo[A, T]) {

  def copy(aa: List[T] = foo.aa(fooable), maybe: Option[T] = foo.maybe(fooable)) = {
    foo.instance(aa, maybe)
  }

}

val r = new Bar(List(""), Option("")).copy(aa = List("asd"))

println(r)

下载

public function rosters(){
    return $this->belongsToMany(Roster::class)
                ->withPivot('number','position')
                ->using(Membership::class)
                ->as("membership");
}

Answer 3

下面的代码片段将帮助您在浏览器上显示文件

@GetMapping(value = "/terms-conditions")
    public ResponseEntity<InputStreamResource> getTermsConditions() {

        String filePath = "/path/to/file/";
        String fileName = "fileName.pdf";
        File file = new File(filePath+fileName);
        HttpHeaders headers = new HttpHeaders();      
        headers.add("content-disposition", "inline;filename=" +fileName);
        
        InputStreamResource resource = new InputStreamResource(new FileInputStream(file));

        return ResponseEntity.ok()
                .headers(headers)
                .contentLength(file.length())
                .contentType(MediaType.parseMediaType("application/pdf"))
                .body(resource);
    }

Spring - 在浏览器中显示PDF文件而不是下载

3 个答案: