This is a simple spring interceptor that can be added to a rest template for automatically handling authentication with sharepoint when accessing their rest API.

To use: Build the project with gradle. Add the jar to your build path and then define spring beans like so:

@Bean 
public SharepointInterceptor sharepointInterceptor() {
	SharepointInterceptor sharepointInterceptor = new SharepointInterceptor();
	
	sharepointInterceptor.setAuthUrl("https://login.microsoftonline.com/extSTS.srf");
	sharepointInterceptor.setSiteUrl("https://yourcompany.sharepoint.com/");
	sharepointInterceptor.setAccessTokenUrl("https://yourcompany.sharepoint.com/_forms/default.aspx?wa=wsignin1.0");
	sharepointInterceptor.setDigestUrl("https://yourcompany.sharepoint.com/_api/contextinfo");
	sharepointInterceptor.setUser("[email protected]");
	sharepointInterceptor.setPassword("yourpassword");
	
	return sharepointInterceptor;
	
}

@Bean
public RestTemplate restTemplate() {
	RestTemplate restTemplate = new RestTemplate();

	List<ClientHttpRequestInterceptor> interceptors = new ArrayList<>();
	interceptors.add(sharepointInterceptor());
	
	restTemplate.setInterceptors(interceptors);
	
	return restTemplate;
}