java - 如何在 spring mvc Rest 服务中将请求 URI 的一部分获取到路径变量中

Question

我的服务代码:

@RequestMapping(value = "/projects/{projectId}/resources/web/{path}", method = RequestMethod.GET)
@ResponseBody
public void getWebFileContent(@PathVariable("projectId") String projectId,@PathVariable("path") String path, HttpServletRequest httpServletRequest) throws Exception {
} 

我的要求是

• /projects/pro1/resources/web/src/main/webapp
• /projects/pro1/resources/web/src/main/test/com/pro1...

是否可以将“src/main/webapp/../.....”放入“path”变量

Answer 1

Spring 在 url 处理程序映射中提供了三种模式

• ？ - 零个或一个字符
• *- 一个字符
• ** - 一个或多个字符

下面的方法解决了我的问题

@RequestMapping(value = "/projects/{projectId}/resources/web/**", method = RequestMethod.GET)
@ResponseBody
public void getWebFileContent(@PathVariable("projectId") String projectIdHttpServletRequest httpServletRequest) throws Exception {
    String path = (String) request.getAttribute(HandlerMapping.PATH_WITHIN_HANDLER_MAPPING_ATTRIBUTE); 
    // will get path = /projects/pro1/resources/web/src/main/webapp
    String bestMatchPattern = (String) request.getAttribute(HandlerMapping.BEST_MATCHING_PATTERN_ATTRIBUTE);
    // will get bestMatchPattern = /projects/pro1/resources/web/**
    AntPathMatcher apm = new AntPathMatcher();
    String exactPath = apm.extractPathWithinPattern(bestMatchPattern, path);
    // will get exactPath = src/main/webapp
    .....
}

任何其他方法都值得赞赏......