我正在尝试从 java spring 控制器调用 web 服务。下面是代码
private void storeImages(MultipartHttpServletRequest multipartRequest) {
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost postRequest = new HttpPost(
"http://localhost:8080/dream/storeimages.htm");
MultipartFile multipartFile1 = multipartRequest.getFile("file1");
MultipartEntity multipartEntity = new MultipartEntity(
HttpMultipartMode.BROWSER_COMPATIBLE);
multipartEntity.addPart("file1",
new ByteArrayBody(multipartFile1.getBytes(),
multipartFile1.getContentType(),
multipartFile1.getOriginalFilename()));
postRequest.setEntity(multipartEntity);
HttpResponse response = httpClient.execute(postRequest);
if (response.getStatusLine().getStatusCode() != 201) {
throw new RuntimeException("Failed : HTTP error code : "
+ response.getStatusLine().getStatusCode());
}
}
上面只是部分代码。我正在尝试确定如何在服务器端检索它。在服务器端我有以下 Spring 控制器代码
@RequestMapping(value = "/storeimages.htm", method = RequestMethod.POST)
public ModelAndView postItem(HttpServletRequest request,
HttpServletResponse response) {
logger.info("Inside /secure/additem/postitem.htm");
try {
// How to get the MultipartEntity object here. More specifically i
// want to get back the Byte array from it
} catch (Exception ex) {
ex.printStackTrace();
}
return new ModelAndView("success");
}
我执行了这段代码,我的控制权转移到服务器端。但我对如何从多方对象中获取字节数组感到困惑。
修改要求:
这是要求。用户从网站上传图像(这已完成并正在工作)表单提交后控件将转到 Spring 控制器(这已完成并正在工作)在 Spring 控制器中,我使用 Multipart 来获取表单的内容。 (这已经完成并且正在工作)现在我想调用一个Web服务,它将图像字节数组发送到图像服务器。(这需要完成)在图像服务器上,我想接收这个Web服务请求,从HTTPServlerRequest获取所有字段,存储图像并返回(这需要完成)
终于解决了。这对我有用。
客户端
private void storeImages(HashMap<String, MultipartFile> imageList) {
try {
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost postRequest = new HttpPost("http://localhost:8080/dream/storeimages.htm");
MultipartEntity multipartEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
Set set = imageList.entrySet();
Iterator i = set.iterator();
while(i.hasNext()) {
Map.Entry me = (Map.Entry)i.next();
String fileName = (String)me.getKey();
MultipartFile multipartFile = (MultipartFile)me.getValue();
multipartEntity.addPart(fileName, new ByteArrayBody(multipartFile.getBytes(),
multipartFile.getContentType(), multipartFile.getOriginalFilename()));
}
postRequest.setEntity(multipartEntity);
HttpResponse response = httpClient.execute(postRequest);
if (response.getStatusLine().getStatusCode() != 200) {
throw new RuntimeException("Failed : HTTP error code : "
+ response.getStatusLine().getStatusCode());
}
BufferedReader br = new BufferedReader(new InputStreamReader((response.getEntity().getContent())));
String output;
while ((output = br.readLine()) != null) {
logger.info("Webservices output - " + output);
}
httpClient.getConnectionManager().shutdown();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
服务器端
@RequestMapping(value = "/storeimages.htm", method = RequestMethod.POST)
public void storeimages(HttpServletRequest request, HttpServletResponse response)
{
logger.info("Inside /secure/additem/postitem.htm");
try
{
//List<Part> formData = new ArrayList(request.getParts());
//Part part = formData.get(0);
//Part part = request.getPart("file1");
//String parameterName = part.getName();
//logger.info("STORC IMAGES - " + parameterName);
MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
Set set = multipartRequest.getFileMap().entrySet();
Iterator i = set.iterator();
while(i.hasNext()) {
Map.Entry me = (Map.Entry)i.next();
String fileName = (String)me.getKey();
MultipartFile multipartFile = (MultipartFile)me.getValue();
logger.info("Original fileName - " + multipartFile.getOriginalFilename());
logger.info("fileName - " + fileName);
writeToDisk(fileName, multipartFile);
}
}
catch(Exception ex)
{
ex.printStackTrace();
}
}
public void writeToDisk(String filename, MultipartFile multipartFile)
{
try
{
String fullFileName = Configuration.getProperty("ImageDirectory") + filename;
FileOutputStream fos = new FileOutputStream(fullFileName);
fos.write(multipartFile.getBytes());
fos.close();
}
catch (Exception ex)
{
ex.printStackTrace();
}
}
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