I have used spring MVC with java config and I have defined some rest-services. I used Spring as server backend and AngularJS as WebFrontend.
I want upload from my AngularJS site one or two CSV files to my rest service. How must i configure spring with java config so that it works? I used Tomcat and a Servlet 3 Container.
My upload rest service looks like this:
@Controller
@RequestMapping("Upload")
@MultipartConfig(fileSizeThreshold=1024*1024*10, // 10 MB
maxFileSize=1024*1024*50, // 50 MB
maxRequestSize=1024*1024*100) // 100 MB
public class UploadController {
@RequestMapping(value="/upload", method=RequestMethod.GET)
public @ResponseBody String provideUploadInfo() {
return "You can upload a file by posting to this same URL.";
}
@RequestMapping(value="/upload", method=RequestMethod.POST)
public @ResponseBody String handleFileUpload(@RequestParam("name") String name,
@RequestParam("file") MultipartFile file){
if (!file.isEmpty()) {
try {
byte[] bytes = file.getBytes();
BufferedOutputStream stream =
new BufferedOutputStream(new FileOutputStream(new File(name + "-uploaded")));
stream.write(bytes);
stream.close();
return "You successfully uploaded " + name + " into " + name + "-uploaded !";
} catch (Exception e) {
return "You failed to upload " + name + " => " + e.getMessage();
}
} else {
return "You failed to upload " + name + " because the file was empty.";
}
}
}
Do i need a "StandardServletMultipartResolver" ? or anything else to get the upload to work ? and if so, how can i enable the multi-part upload with java config ? my config at the moment looks like this:
public class WebInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
@Override
protected Class<?>[] getRootConfigClasses() {
return new Class<?>[]{ PersistenceContext.class,AppConfig.class,SecurityConfig.class };
}
@Override
protected Class<?>[] getServletConfigClasses() {
return new Class<?>[] { WebConfig.class };
}
@Override
protected String[] getServletMappings() {
return new String[] { "/Spring/*" };
}
@Override
protected Filter[] getServletFilters() {
CharacterEncodingFilter characterEncodingFilter = new CharacterEncodingFilter();
characterEncodingFilter.setEncoding("UTF-8");
CorsFilter cf=new CorsFilter();
MultipartFilter mpf=new MultipartFilter(); //MultipartFilter support
return new Filter[] {characterEncodingFilter,cf,mpf};
}
}
and WebConfig:
@Configuration
@EnableWebMvc
@ComponentScan(basePackages = { "controller" })
public class WebConfig extends WebMvcConfigurerAdapter {
@Bean
public MultipartResolver multipartResolver(){
return new StandardServletMultipartResolver();
}
}
and ApplicationConfig
@Configuration
public class AppConfig {
@Bean
public Test getTest(){
return new Test();
}
}
The Example with the upload is from this site http://spring.io/guides/gs/uploading-files/ but they used a MultiPartConfigFactory and this is from spring boot; can i use this to ? i did not use spring boot at the moment.. So What is the easiest way to get the multi-part upload working with my configuration!?
EDIT2: I have added two things to my configuration Above the new getServletFilter looks now like this, i have added a MultipartFilter():
@Override
protected Filter[] getServletFilters() {
CharacterEncodingFilter characterEncodingFilter = new CharacterEncodingFilter();
characterEncodingFilter.setEncoding("UTF-8");
CorsFilter cf=new CorsFilter();
MultipartFilter mpf=new MultipartFilter(); //MultipartFilter support
return new Filter[] {characterEncodingFilter,cf,mpf};
}
and in my WebConfig i have added a StandardServletMultipartResolver:
@Bean
public MultipartResolver multipartResolver(){
return new StandardServletMultipartResolver();
}
Now i want to test it with a simple html site like this:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<form method="POST" enctype="multipart/form-data"
action="http://localhost:8081/project/Spring/Upload/upload">
File to upload: <input type="file" name="file"><br /> Name: <input
type="text" name="name"><br /> <br /> <input type="submit"
value="Upload"> Press here to upload the file!
</form>
</body>
</html>
but it says "HTTP Status 400 - Required String parameter 'name' is not present". why is name not present !?
