springboot + html 项目报错：
javax.servlet.ServletException: Circular view path [readingList]: would dispatch back to the current handler URL [/book/readingList] again. Check your ViewResolver setup!
controller 代码：
@RestController @RequestMapping("/book") public class ReadingListController { @Resource private BookMapper bookMapper; @RequestMapping(value="/{reader}",method = RequestMethod.GET) public ModelAndView readersBooks(@PathVariable("reader") String reader){ ModelAndView modelAndView = new ModelAndView(); modelAndView.setViewName("/book/readingList.html"); List<Book> readingList = bookMapper.findByReader(reader); if(readingList != null){ modelAndView.addObject("books", readingList); } return modelAndView; } } }
项目路径：
启动项目：gradle bootRun
访问：http://localhost:8080/book/pang
现象：一直error，javax.servlet.ServletException: Circular view path [readingList]: would dispatch back to the current handler URL [/book/readingList] again. Check your ViewResolver setup!
这个error是在InternalResourceView.prepareForRendering 方法中抛出的
debug 发现这个请求会走两次servlet，也就是会调用两次InternalResourceView.prepareForRendering 方法，第一次调用success，第二次调用时抛出异常
原因是：controller 返回的路径 /book/readingList.html 因为和mapping 的路径 @RequestMapping("/book") 重合，第一次返回response 后会再次匹配mapping，导致error。
解决方法：modelAndView.setViewName("/book/readingList.html"); 改成 modelAndView.setViewName("/page/readingList.html");
根本原因是什么呢？
