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What is content disposition in java

На чтение 8 мин
Содержание
  1. Spring HttpHeaders CONTENT_DISPOSITION
  2. Syntax
  3. Example
  4. Related
  5. What is content disposition in java
  6. ContentDisposition
  7. ContentDisposition
  8. ContentDisposition
  9. getDisposition
  10. getParameter
  11. getParameterList
  12. setDisposition
  13. setParameter
  14. setParameterList
  15. toString

Spring HttpHeaders CONTENT_DISPOSITION

Spring HttpHeaders CONTENT_DISPOSITION The HTTP Content-Disposition header field name.

Syntax

The field CONTENT_DISPOSITION() from HttpHeaders is declared as:

public static final String CONTENT_DISPOSITION = "Content-Disposition";

Example

The following code shows how to use Spring HttpHeaders.CONTENT_DISPOSITION

import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.context.annotation.Bean; import org.springframework.http.HttpHeaders; import org.springframework.http.MediaType; import org.springframework.stereotype.Controller; import org.springframework.util.StreamUtils; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.multipart.MultipartFile; import org.springframework.web.multipart.MultipartResolver; import org.springframework.web.multipart.support.StandardServletMultipartResolver; import javax.servlet.http.HttpServletResponse; import java.io.IOException; import java.io.InputStream; import java.nio.file.Paths; import java.util.List; import java.util.zip.ZipEntry; import java.util.zip.ZipOutputStream; @Controller/* w w w . d e mo 2 s. c o m*/ @SpringBootApplication public class ZipDemoApplication < public static void main(String[] args) < SpringApplication.run(ZipDemoApplication.class, args); > @Bean public MultipartResolver multipartResolver() < return new StandardServletMultipartResolver(); > @RequestMapping(path = "/files") public void zipDownload(@RequestParam List files, HttpServletResponse response) throws IOException < response.setHeader(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_OCTET_STREAM_VALUE); response.setHeader(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=download.zip"); try (ZipOutputStream zipOutputStream = new ZipOutputStream(response.getOutputStream())) < for (MultipartFile file : files) < String fileName = Paths.get(file.getOriginalFilename()).getFileName().toString(); try (InputStream input = file.getInputStream()) < zipOutputStream.putNextEntry(new ZipEntry(fileName)); StreamUtils.copy(input, zipOutputStream); // write per 4KB > > > > >
import com.xbcai.model.User; import com.xbcai.result.Result; import com.xbcai.service.file.StorageFileNotFoundException; import com.xbcai.service.file.StorageService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.core.io.Resource; import org.springframework.http.HttpHeaders; import org.springframework.http.ResponseEntity; import org.springframework.util.StringUtils; import org.springframework.web.bind.annotation.*; import org.springframework.web.multipart.MultipartFile; import org.springframework.web.servlet.mvc.method.annotation.MvcUriComponentsBuilder; import java.util.stream.Collectors; @RestController/* w w w . d e m o 2 s .c om */ public class FileUploadController < @Autowired private StorageService storageService; @GetMapping("/tt") public Result tt() < User t = new User(); t.setAddress("gz"); t.setName("xbcai"); t.setSex("nv"); return Result.success(t); > @GetMapping("/listUploadedFiles") public ResponseEntity listUploadedFiles() < return ResponseEntity.ok(storageService.loadAll() .map(path -> MvcUriComponentsBuilder .fromMethodName(FileUploadController.class, "serveFile", path.getFileName().toString()) .build().toString()) .collect(Collectors.toList())); > @GetMapping("/files/") @ResponseBody public ResponseEntityResource> serveFile(@PathVariable String filename) < Resource file = storageService.loadAsResource(filename); return ResponseEntity.ok() .header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=\"" + file.getFilename() + "\"") .body(file); > @PostMapping("/handleFileUpload") public ResponseEntityString> handleFileUpload(@RequestParam("file") MultipartFile file) throws Exception < storageService.store(file); return ResponseEntity.ok("You successfully uploaded " + file.getOriginalFilename() + "!"); > @ExceptionHandler(StorageFileNotFoundException.class) public ResponseEntity handleStorageFileNotFound(StorageFileNotFoundException exc) < return ResponseEntity.notFound().build(); > public static void main(String[] args) < System.out.println(StringUtils.getFilename("mypath/myfile.txt")); System.out.println(StringUtils.getFilename("D:\\private/______/__?_________/Joanna.png")); System.out.println(StringUtils.cleanPath("D://private/______/__?_________/Joanna.png")); System.out.println(StringUtils.cleanPath("d:/java/wolfcode/../../other/Some.java")); > >
import com.fast.cloud.domain.ComRequest; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.netflix.eureka.EnableEurekaClient; import org.springframework.context.annotation.ComponentScan; import org.springframework.core.env.Environment; import org.springframework.core.io.ClassPathResource; import org.springframework.core.io.Resource; import org.springframework.http.HttpHeaders; import org.springframework.http.MediaType; import org.springframework.http.ZeroCopyHttpOutputMessage; import org.springframework.http.codec.multipart.FilePart; import org.springframework.http.server.reactive.ServerHttpResponse; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.*; import org.springframework.web.reactive.function.BodyInserters; import org.springframework.web.reactive.function.server.ServerResponse; import reactor.core.publisher.Mono; import java.io.File; import java.io.IOException; @SpringBootApplication/* w w w. d em o 2 s. c o m*/ @EnableEurekaClient @Controller @ComponentScan("com.fast.cloud") public class ServiceHiReactApplication extends BaseController < @Autowired Environment environment; public static void main(String[] args) < SpringApplication.run(ServiceHiReactApplication.class, args); > @RequestMapping("/hello/") @ResponseBody public MonoString> sayHiFromClientOne(@PathVariable(name = "name") String name) < return Mono.just("hello:" + name + "port:" + environment.getProperty("server.port")); > @RequestMapping("/hello2") @ResponseBody public MonoString> hello2(@RequestParam("sort") String sortField, @RequestParam("direction") String sortDirection) < return Mono.just("sortField:" + sortField + "sortDirection:" + sortDirection); > @RequestMapping("/hello3") @ResponseBody public MonoString> hello3(@RequestBody ComRequest comRequest) < return Mono.just("comRequest.getName():" + comRequest.getName()); > @PostMapping(value = "/upload", consumes = MediaType.MULTIPART_FORM_DATA_VALUE) @ResponseBody MonoString> upload(@RequestPart(value = "file") FilePart file) < return Mono.just(file.filename()); > @GetMapping(value = "/download") MonoVoid> download(ServerHttpResponse response) throws IOException < ZeroCopyHttpOutputMessage zeroCopyResponse = (ZeroCopyHttpOutputMessage) response; response.getHeaders().set(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=parallel.png"); response.getHeaders().setContentType(MediaType.IMAGE_PNG); Resource resource = new ClassPathResource("images.jpg"); File file = resource.getFile(); return zeroCopyResponse.writeWith(file, 0, file.length()); > // @GetMapping(value = "/download2") // @ResponseBody // Mono download2(ServerHttpResponse response) throws IOException //// ZeroCopyHttpOutputMessage zeroCopyResponse = (ZeroCopyHttpOutputMessage) response; //// response.getHeaders().set(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=parallel.png"); //// response.getHeaders().setContentType(MediaType.IMAGE_PNG); //// //// Resource resource = new ClassPathResource("images.jpg"); //// File file = resource.getFile(); //// return zeroCopyResponse.writeWith(file, 0, file.length()); // Resource resource = new ClassPathResource("images.jpg"); // File file = resource.getFile(); // return ServerResponse.ok() // .header(HttpHeaders.CONTENT_DISPOSITION, "attachment;filename=parallel.png") // .contentType(MediaType.IMAGE_PNG) // .body(BodyInserters.fromResource(resource)) // .switchIfEmpty(Mono.empty()); // > // public Mono test(ServerRequest request) throws Exception // File excel = new File("tmp"); // var out = new FileOutputStream(excel); // var writer = new ExcelWriter(out, ExcelTypeEnum.XLSX,false); // Sheet sheet1 = new Sheet(1, 0); // writer.write(Arrays.asList(), sheet1); // writer.finish(); // return ServerResponse.ok() // .header(HttpHeaders.CONTENT_DISPOSITION, "attachment;filename=test.xlsx") // .contentType(new MediaType("multipart/form-data")) // .body((p, a) -> // var resp = (ZeroCopyHttpOutputMessage) p; // return resp.writeWith(excel, 0, excel.length()); // >).doFinally(a -> ); // > >

  • Spring HttpHeaders getDate()
  • Spring HttpHeaders setContentLength(long contentLength)
  • Spring HttpHeaders setContentDispositionFormData(String name, @Nullable String filename)
  • Spring HttpHeaders CONTENT_DISPOSITION
  • Spring HttpHeaders getContentType()
  • Spring HttpHeaders ACCEPT
  • Spring HttpHeaders getAllow()

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What is content disposition in java

This class represents a MIME ContentDisposition value. It provides methods to parse a ContentDisposition string into individual components and to generate a MIME style ContentDisposition string.

Constructor Summary
ContentDisposition ()
No-arg Constructor.
ContentDisposition (java.lang.String s)
Constructor that takes a ContentDisposition string.
ContentDisposition (java.lang.String disposition, ParameterList list)
Constructor.
Method Summary
java.lang.String getDisposition ()
Return the disposition value.
java.lang.String getParameter (java.lang.String name)
Return the specified parameter value.
ParameterList getParameterList ()
Return a ParameterList object that holds all the available parameters.
void setDisposition (java.lang.String disposition)
Set the disposition.
void setParameter (java.lang.String name, java.lang.String value)
Set the specified parameter.
void setParameterList (ParameterList list)
Set a new ParameterList.
java.lang.String toString ()
Retrieve a RFC2045 style string representation of this ContentDisposition.
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

ContentDisposition

public ContentDisposition()

ContentDisposition

Parameters: disposition — disposition list — ParameterList Since: JavaMail 1.2

ContentDisposition

Constructor that takes a ContentDisposition string. The String is parsed into its constituents: dispostion and parameters. A ParseException is thrown if the parse fails.

Parameters: s — the ContentDisposition string. Throws: ParseException — if the parse fails. Since: JavaMail 1.2

Method Detail

getDisposition

public java.lang.String getDisposition()

Returns: the disposition Since: JavaMail 1.2

getParameter

public java.lang.String getParameter(java.lang.String name)

Returns: parameter value Since: JavaMail 1.2

getParameterList

Return a ParameterList object that holds all the available parameters. Returns null if no parameters are available.

Returns: ParameterList Since: JavaMail 1.2

setDisposition

public void setDisposition(java.lang.String disposition)

Parameters: disposition — the disposition Since: JavaMail 1.2

setParameter

public void setParameter(java.lang.String name, java.lang.String value)

Parameters: name — parameter name value — parameter value Since: JavaMail 1.2

setParameterList

Parameters: list — ParameterList Since: JavaMail 1.2

toString

public java.lang.String toString()

Retrieve a RFC2045 style string representation of this ContentDisposition. Returns null if the conversion failed.

Overrides: toString in class java.lang.Object Returns: RFC2045 style string Since: JavaMail 1.2

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Generated on 10-February-2011 12:41

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