WebJarsController.java

package org.springboot.sample.config;

import javax.servlet.http.HttpServletRequest;

import org.springframework.core.io.ClassPathResource;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.HandlerMapping;
import org.webjars.WebJarAssetLocator;

/**
 * 处理WebJars，自动读取版本号
 *
 * @author   单红宇(365384722)
 * @myblog  http://blog.csdn.net/catoop/
 * @create    2016年1月8日
 */
@Controller
public class WebJarsController {
	
	 private final WebJarAssetLocator assetLocator = new WebJarAssetLocator();
	 
	 // org.webjars.AssetLocator.getWebJarPath()

	@ResponseBody
	@RequestMapping("/webjarslocator/{webjar}/**")
	public ResponseEntity<Object> locateWebjarAsset(@PathVariable String webjar, HttpServletRequest request) {
	    try {
	    	String mvcPrefix = "/webjarslocator/" + webjar + "/"; // This prefix must match the mapping path!
	    	String mvcPath = (String) request.getAttribute(HandlerMapping.PATH_WITHIN_HANDLER_MAPPING_ATTRIBUTE);
	        String fullPath = assetLocator.getFullPath(webjar, mvcPath.substring(mvcPrefix.length()));
	        return new ResponseEntity<>(new ClassPathResource(fullPath), HttpStatus.OK);
	    } catch (Exception e) {
	        return new ResponseEntity<>(HttpStatus.NOT_FOUND);
	    }
	}

}