spring通配符jar资源加载问题

jar资源加载问题

 

• 问题：Spring加载jar中的：classpath*:xxx/applicationContext*.xml文件失败
• 环境：
  1. jar文件中文件: classpath*:xxx/applicationContext*.xml
  2. Eclipse使用“导出”jar时未选择”Add directory entries”（选择后，不会出现此问题）如下图：
     
      
• 分析：
  1. 代码：
     

     //Resource[] org.springframework.core.io.support.PathMatchingResourcePatternResolver.findPathMatchingResources(String locationPattern) throws IOException
             protected Resource[] findPathMatchingResources(String locationPattern) throws IOException {
                     String rootDirPath = determineRootDir(locationPattern);
                     String subPattern = locationPattern.substring(rootDirPath.length());
                     Resource[] rootDirResources = getResources(rootDirPath);
                     Set<Resource> result = new LinkedHashSet<Resource>(16);
                     for (Resource rootDirResource : rootDirResources) {
                             rootDirResource = resolveRootDirResource(rootDirResource);
                             if (isJarResource(rootDirResource)) {
                                     result.addAll(doFindPathMatchingJarResources(rootDirResource, subPattern));
                             }
                             else if (rootDirResource.getURL().getProtocol().startsWith(ResourceUtils.URL_PROTOCOL_VFS)) {
                                     result.addAll(VfsResourceMatchingDelegate.findMatchingResources(rootDirResource, subPattern, getPathMatcher()));
                             }
                             else {
                                     result.addAll(doFindPathMatchingFileResources(rootDirResource, subPattern));
                             }
                     }
                     if (logger.isDebugEnabled()) {
                             logger.debug("Resolved location pattern [" + locationPattern + "] to resources " + result);
                     }
                     return result.toArray(new Resource[result.size()]);
             }

      
  2. 因为spring支持通配符加载资源，所以使用：Resource[] rootDirResources = getResources(rootDirPath);来加载目录，再定位子资源subPattern的路径，即可支持通配符加载资源

评论

1 楼 skzr.org 2011-02-14  

http://download.oracle.com/javase/6/docs/api/index.html

JDK提供了一个JarFile的类