Spring MVC如何处理对角路由器生成的URL的请求？

Question

I have a Spring (v, 4.3.2 & Java 8) application that serves up an Angular2 single page application front end that has multiple routes (say /foo , /bar and /baz , one of which requires a parameter to render ( /baz/x where x is the identifier of the resource to retrieve).

The html is served up with a standard Spring MVC @Controller :

@RequestMapping(value = {"/", "/foo", "/bar", "/baz/{id}"}, method = RequestMethod.GET)
public String index(@PathVariable Optional<String> id) {
    return "index";
}

and views are resolved using:

@Bean
public InternalResourceViewResolver internalResourceViewResolver() {
    InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
    viewResolver.setPrefix("WEB-INF/pages/");
    viewResolver.setSuffix(".jsp");
    return viewResolver;
}

If the browser reloads from the / , /foo or /bar routes, the controller properly returns the index page and angular resolves the view for the route as expected. However, if the browser reloads from one of the baz routes that contain a paramenter, the server prepends baz to the resource path (eg /baz/WEB-INF/pages/index.jsp ) which, results in a 404 error.

I've tried refactoring the baz request mappings info into an annotation on a distinct (identical) method and using wildcards in the request mapping (eg /** and baz/* ), but always get the same result. Regardless of the request mapping, Spring seems unaware that it is appending baz into the path, as the logs contain:

DEBUG: org.springframework.web.servlet.DispatcherServlet - Rendering view [org.springframework.web.servlet.view.InternalResourceView: name 'index'; URL [WEB-INF/pages/index.jsp]] in DispatcherServlet with name 'dispatcher'
DEBUG: org.springframework.web.servlet.view.InternalResourceView - Forwarding to resource [WEB-INF/pages/index.jsp] in InternalResourceView 'index'
DEBUG: org.springframework.web.servlet.DispatcherServlet - Successfully completed request

Any help on this would be appreciated.

Answer 1

Solved the problem - omitting the leading slash from the prefix argument string causes the issue. For proper configuration the argument should be:

viewResolver.setPrefix("/WEB-INF/pages/");