Spring 如何使用客户端上载多部分表单数据
我正在尝试将多部分表单数据从web客户端上传到SpringMVC控制器。我在“Spring”实现中搜索以下curl命令:Spring 如何使用客户端上载多部分表单数据,spring,spring-mvc,Spring,Spring Mvc,我正在尝试将多部分表单数据从web客户端上传到SpringMVC控制器。我在“Spring”实现中搜索以下curl命令: curl -v -X POST -F "logo=@walmart.jpg" -F "id=12345" -F "name=Walmart" http://localhost:8080/api/cardprovider/logo 请注意:我不是通过html表单上传表单,这不是我想要实现的 现在我的问题是: 您会使用ApacheCommonsHttpClient来实现这一点
curl -v -X POST -F "logo=@walmart.jpg" -F "id=12345" -F "name=Walmart" http://localhost:8080/api/cardprovider/logo
请注意:我不是通过html表单上传表单,这不是我想要实现的
现在我的问题是:
- 您会使用ApacheCommonsHttpClient来实现这一点吗 ? 李>
- 还是有一个“春天”式的魔法图书馆 帮我做这个
@Controller
@RequestMapping("/api/cardprovider/logo")
public class CardproviderLogoResourceController {
@Resource(name = "cardproviderLogoService")
private CardproviderLogoService cardproviderLogoService;
/**
* Used to upload a binary logo of a Cardprovider through a Multipart request. The id is provided as form element.
* <p/>
* Example to upload a file using curl:
* curl -v -X POST -F "image=@star.jpg" -F "id=12345" -F "name=Walmart" http://localhost:8080/api/cardprovider/logo
* <p/>
*
* @param logo the Multipart request
* @param id the Cardprovider id
* @param name the Cardprovider name
*/
@RequestMapping(value = "", method = RequestMethod.POST)
@ResponseStatus(HttpStatus.NO_CONTENT)
public void storeCardproviderLogo(@RequestParam(value = "logo", required = false) MultipartFile logo,
@RequestParam(value = "name") String name,
@RequestParam(value = "id") String id) throws IOException {
cardproviderLogoService.storeLogo(logo, id, name);
}
}
@RequestMapping(value = "/add", method = RequestMethod.POST)
public String addCardprovider(
@ModelAttribute("cardproviderAttribute") Cardprovider cardprovider,
Model model) {
// Prepare acceptable media type
List<MediaType> acceptableMediaTypes = new ArrayList<MediaType>();
acceptableMediaTypes.add(MediaType.APPLICATION_XML);
// Prepare header
HttpHeaders headers = new HttpHeaders();
headers.setAccept(acceptableMediaTypes);
// Pass the new person and header
HttpEntity<Cardprovider> entity = new HttpEntity<Cardprovider>(
cardprovider, headers);
// Send the request as POST
try {
// Save Cardprovider details
ResponseEntity<Cardprovider> response = restTemplate.exchange(
"http://localhost:8080/api/cardprovider", HttpMethod.POST,
entity, Cardprovider.class);
// Save Cardprovider logo
String tempDir = System.getProperty("java.io.tmpdir");
File file = new File(tempDir + "/" + cardprovider.getLogo().getOriginalFilename());
cardprovider.getLogo().transferTo(file);
MultiValueMap<String, Object> parts = new LinkedMultiValueMap<String, Object>();
parts.add("id", response.getBody().getId());
parts.add("name", response.getBody().getName());
parts.add("logo", new FileSystemResource(file));
restTemplate.postForLocation("http://localhost:8080/api/cardprovider/logo", parts);
} catch (Exception e) {
e.printStackTrace();
}
// This will redirect to /web/cardprovider/getall
return "redirect:/web/cardprovider/getall";
}
@控制器
@请求映射(“/api/cardprovider/logo”)
公共类CardproviderLogoResourceController{
@资源(name=“cardproviderLogoService”)
私人卡提供商LogoService卡提供商LogoService;
/**
*用于通过多部分请求上载Cardprovider的二进制徽标。id作为表单元素提供。
*
*使用curl上载文件的示例:
*curl-v-X POST-F“image=@star.jpg”-F“id=12345”-F“name=Walmart”http://localhost:8080/api/cardprovider/logo
*
*
*@param logo支持多部分请求
*@param id-Cardprovider id
*@param name Cardprovider名称
*/
@RequestMapping(value=”“,method=RequestMethod.POST)
@ResponseStatus(HttpStatus.无内容)
public void storeCardproviderLogo(@RequestParam(value=“logo”,required=false)多部分文件徽标,
@RequestParam(value=“name”)字符串名称,
@RequestParam(value=“id”)字符串id)引发IOException{
cardproviderLogoService.storeLogo(徽标、id、名称);
}
}
下面是我的服务类,它将多部分请求存储在GridFS数据库中:
服务:
@Service
public class CardproviderLogoService {
@Autowired
GridFsOperations gridOperation;
/**
* Create the logo in MongoDB GridFS with the data returned from the Multipart
* <p/>
*
* @param logo the MultipartFile content
* @param id the Cardprovider id
* @param name the Cardprovider name
* @return true if the image can be saved in the database, else false
*/
public Boolean storeLogo(MultipartFile logo, String id, String name) {
Boolean save_state = false;
BasicDBObject metadata = new BasicDBObject();
metadata.put("cardproviderId", id);
metadata.put("cardproviderName", name);
metadata.put("contentType", logo.getContentType());
metadata.put("fileName", createLogoFilename(name, logo.getOriginalFilename()));
metadata.put("originalFilename", logo.getOriginalFilename());
metadata.put("dirShortcut", "cardproviderLogo");
metadata.put("filePath", "/resources/images/cardproviders/logos/");
try {
gridOperation.store(logo.getInputStream(),
metadata.getString("fileName").toLowerCase().replace(" ", "-"),
metadata);
save_state = true;
} catch (Exception ex) {
Logger.getLogger(CardproviderLogoService.class.getName())
.log(Level.SEVERE, "Storage of Logo failed!", ex);
}
return save_state;
}
/**
* Creates the new filename before storing the file in MongoDB GridFS. The filename is created by taking the
* name of the Cardprovider, lowercase the name and replace the whitespaces with dashes. At last the file
* extension is added that was provided by the original filename.
* <p/>
*
* @param name the Cardprovider name
* @param originalFilename the original filename
* @return the new filename as String
*/
private String createLogoFilename(String name, String originalFilename) {
String cpName = name.toLowerCase().replace(" ", "-");
String extension = "";
int i = originalFilename.lastIndexOf('.');
if (i > 0 && i < originalFilename.length() - 1) {
extension = originalFilename.substring(i + 1).toLowerCase();
}
return cpName + "." + extension;
}
}
@服务
公共类CardproviderLogoService{
@自动连线
GridFS操作gridOperation;
/**
*使用多部分返回的数据在MongoDB GridFS中创建徽标
*
*
*@param logo显示多部分文件内容
*@param id-Cardprovider id
*@param name Cardprovider名称
*@如果图像可以保存在数据库中,则返回true,否则返回false
*/
公共布尔存储徽标(多部分文件徽标、字符串id、字符串名称){
布尔值save_state=false;
BasicDBObject元数据=新建BasicDBObject();
metadata.put(“cardproviderId”,id);
metadata.put(“cardproviderName”,name);
put(“contentType”,logo.getContentType());
put(“fileName”,createLogoFilename(name,logo.getOriginalFilename());
put(“originalFilename”,logo.getOriginalFilename());
metadata.put(“dirShortcut”、“cardproviderLogo”);
metadata.put(“文件路径”,“/resources/images/cardproviders/logo/”;
试一试{
gridOperation.store(logo.getInputStream(),
metadata.getString(“文件名”).toLowerCase().replace(“,“-”),
元数据);
save_state=true;
}捕获(例外情况除外){
Logger.getLogger(CardproviderLogoService.class.getName())
.log(Level.SEVERE,“徽标存储失败!”,例如);
}
返回保存状态;
}
/**
*在将文件存储到MongoDB GridFS之前创建新文件名
*Cardprovider的名称,将名称小写,并将空格替换为破折号。最后,文件
*添加了由原始文件名提供的扩展名。
*
*
*@param name Cardprovider名称
*@param originalFilename原始文件名
*@以字符串形式返回新文件名
*/
私有字符串createLogoFilename(字符串名称、字符串原始文件名){
字符串cpName=name.toLowerCase().replace(“,“-”);
字符串扩展名=”;
int i=原始文件名.lastIndexOf('.');
如果(i>0&&i
谢谢你的帮助和亲切的问候,
克里斯
解决方案
我可以用下面的方法解决这个问题。我有一个HtmlController,它接受表单输入并建立到RestController的连接以传输文件
以下是HtmlController的方法:
@Controller
@RequestMapping("/api/cardprovider/logo")
public class CardproviderLogoResourceController {
@Resource(name = "cardproviderLogoService")
private CardproviderLogoService cardproviderLogoService;
/**
* Used to upload a binary logo of a Cardprovider through a Multipart request. The id is provided as form element.
* <p/>
* Example to upload a file using curl:
* curl -v -X POST -F "image=@star.jpg" -F "id=12345" -F "name=Walmart" http://localhost:8080/api/cardprovider/logo
* <p/>
*
* @param logo the Multipart request
* @param id the Cardprovider id
* @param name the Cardprovider name
*/
@RequestMapping(value = "", method = RequestMethod.POST)
@ResponseStatus(HttpStatus.NO_CONTENT)
public void storeCardproviderLogo(@RequestParam(value = "logo", required = false) MultipartFile logo,
@RequestParam(value = "name") String name,
@RequestParam(value = "id") String id) throws IOException {
cardproviderLogoService.storeLogo(logo, id, name);
}
}
@RequestMapping(value = "/add", method = RequestMethod.POST)
public String addCardprovider(
@ModelAttribute("cardproviderAttribute") Cardprovider cardprovider,
Model model) {
// Prepare acceptable media type
List<MediaType> acceptableMediaTypes = new ArrayList<MediaType>();
acceptableMediaTypes.add(MediaType.APPLICATION_XML);
// Prepare header
HttpHeaders headers = new HttpHeaders();
headers.setAccept(acceptableMediaTypes);
// Pass the new person and header
HttpEntity<Cardprovider> entity = new HttpEntity<Cardprovider>(
cardprovider, headers);
// Send the request as POST
try {
// Save Cardprovider details
ResponseEntity<Cardprovider> response = restTemplate.exchange(
"http://localhost:8080/api/cardprovider", HttpMethod.POST,
entity, Cardprovider.class);
// Save Cardprovider logo
String tempDir = System.getProperty("java.io.tmpdir");
File file = new File(tempDir + "/" + cardprovider.getLogo().getOriginalFilename());
cardprovider.getLogo().transferTo(file);
MultiValueMap<String, Object> parts = new LinkedMultiValueMap<String, Object>();
parts.add("id", response.getBody().getId());
parts.add("name", response.getBody().getName());
parts.add("logo", new FileSystemResource(file));
restTemplate.postForLocation("http://localhost:8080/api/cardprovider/logo", parts);
} catch (Exception e) {
e.printStackTrace();
}
// This will redirect to /web/cardprovider/getall
return "redirect:/web/cardprovider/getall";
}
@RequestMapping(value=“/add”,method=RequestMethod.POST)
公共字符串addCardprovider(
@ModelAttribute(“cardproviderAttribute”)Cardprovider Cardprovider,
(模型){
//准备可接受的介质类型
List acceptableMediaTypes=new ArrayList();
acceptableMediaTypes.add(MediaType.APPLICATION\uXML);
//准备收割台
HttpHeaders=新的HttpHeaders();
headers.setAccept(acceptableMediaTypes);
//传递新的人员和标题
HttpEntity=新的HttpEntity(
卡片提供者,标题);
//以邮寄方式发送请求
试一试{
//保存Cardprovider详细信息
ResponseEntity response=restemplate.exchange(
"http://localhost:8080/api/cardprovider“,HttpMethod.POST,
实体,Cardprovider.class);
//保存Cardprovider徽标
字符串tempDir=System.getProperty(“java.io.tmpdir”);
File File=新文件(tempDir+“/”+cardprovider.getLogo().getOriginalFilename());
cardprovider.getLogo().transferTo(文件);
MultiValueMap parts=新链接的MultiValueMap();
parts.add(“id”,response.getBody().getId());
parts.add(“name”,response.getBody().getName());
帕