How to use multiple @RequestMapping annotations in spring?
@RequestMapping has a String[] value parameter, so you should be able to specify multiple values like this: @RequestMapping(value={“”, “/”, “welcome”})
spring-mvc
When using Spring Security, what is the proper way to obtain current username (i.e. SecurityContext) information in a bean?
If you are using Spring 3, the easiest way is: @RequestMapping(method = RequestMethod.GET) public ModelAndView showResults(final HttpServletRequest request, Principal principal) { final String currentUser = principal.getName(); }
Spring Boot configure and use two data sources
Here you go. Add in your application.properties file: #first db spring.datasource.url = [url] spring.datasource.username = [username] spring.datasource.password = [password] spring.datasource.driverClassName = oracle.jdbc.OracleDriver #second db … spring.secondDatasource.url = [url] spring.secondDatasource.username = [username] spring.secondDatasource.password = [password] spring.secondDatasource.driverClassName = oracle.jdbc.OracleDriver Add in any class annotated with @Configuration the following methods: @Bean @Primary @ConfigurationProperties(prefix=”spring.datasource”) public DataSource primaryDataSource() { return … Read more
Difference between Role and GrantedAuthority in Spring Security
Think of a GrantedAuthority as being a “permission” or a “right”. Those “permissions” are (normally) expressed as strings (with the getAuthority() method). Those strings let you identify the permissions and let your voters decide if they grant access to something. You can grant different GrantedAuthoritys (permissions) to users by putting them into the security context. … Read more
Using env variable in Spring Boot’s application.properties
You don’t need to use java variables. To include system env variables add the following to your application.properties file: spring.datasource.url = ${OPENSHIFT_MYSQL_DB_HOST}:${OPENSHIFT_MYSQL_DB_PORT}/”nameofDB” spring.datasource.username = ${OPENSHIFT_MYSQL_DB_USERNAME} spring.datasource.password = ${OPENSHIFT_MYSQL_DB_PASSWORD} But the way suggested by @Stefan Isele is more preferable, because in this case you have to declare just one env variable: spring.profiles.active. Spring will read the … Read more
When do I use path params vs. query params in a RESTful API?
Best practice for RESTful API design is that path params are used to identify a specific resource or resources, while query parameters are used to sort/filter those resources. Here’s an example. Suppose you are implementing RESTful API endpoints for an entity called Car. You would structure your endpoints like this: GET /cars GET /cars/:id POST … Read more
How to upload a file and JSON data in Postman?
In postman, set method type to POST. Then select Body -> form-data -> Enter your parameter name (file according to your code) On the right side of the Key field, while hovering your mouse over it, there is a dropdown menu to select between Text/File. Select File, then a “Select Files” button will appear in … Read more
Spring MVC @PathVariable with dot (.) is getting truncated
As far as i know this issue appears only for the pathvariable at the end of the requestmapping. We were able to solve that by defining the regex addon in the requestmapping. /somepath/{variable:.+}
@RequestParam vs @PathVariable
@PathVariable is to obtain some placeholder from the URI (Spring call it an URI Template) — see Spring Reference Chapter 16.3.2.2 URI Template Patterns @RequestParam is to obtain a parameter from the URI as well — see Spring Reference Chapter 16.3.3.3 Binding request parameters to method parameters with @RequestParam If the URL http://localhost:8080/MyApp/user/1234/invoices?date=12-05-2013 gets the … Read more
Difference between spring @Controller and @RestController annotation
@Controller is used to mark classes as Spring MVC Controller. @RestController is a convenience annotation that does nothing more than adding the @Controller and @ResponseBody annotations (see: Javadoc) So the following two controller definitions should do the same @Controller @ResponseBody public class MyController { } @RestController public class MyRestController { }