Spring Boot获取所有类名，接口名，注解值

需求

近来项目中有个新需求，审计记录中除了用户的访问地址还需要包含事件具体描述，项目是集成了swagger的，开发时接口上都用@ApiOperation写了接口说明，出于偷懒的心理尝试了一波根据url反向查找类名，接口名，注解值，尝试之后甚是觉得不偷懒的搬砖工一定不是好的泥水匠。。。

实现思路

• 项目加载时获取所有的Controller类 - 路径 - 接口名 - 接口说明 - 接口发布说明到系统全局变量
• 日志记录时根据url获取接口发布说明

实现代码

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.servlet.ServletContext;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.context.ServletContextAware;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.mvc.condition.PatternsRequestCondition;
import org.springframework.web.servlet.mvc.condition.RequestMethodsRequestCondition;
import org.springframework.web.servlet.mvc.method.RequestMappingInfo;
import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping;
import com.tbtech.common.utils.StringUtils;
import io.swagger.annotations.ApiOperation;

@Service
public class InitUrlService implements InitializingBean, ServletContextAware{
	
	public static List<HashMap<String, String>> urlList = new ArrayList<HashMap<String, String>>();  
	
	@Autowired
        private RequestMappingHandlerMapping requestMappingHandlerMapping;

	/**
	 *  获取url与类和方法的对应信息
	 */
	@Override
	public void setServletContext(ServletContext servletContext) {
        Map<RequestMappingInfo, HandlerMethod> handlerMethodsMap = requestMappingHandlerMapping.getHandlerMethods();  
        for (Map.Entry<RequestMappingInfo, HandlerMethod> item : handlerMethodsMap.entrySet()) {
            HashMap<String, String> model = new HashMap<String, String>();  
            RequestMappingInfo info = item.getKey();  
            HandlerMethod method = item.getValue();  
            PatternsRequestCondition p = info.getPatternsCondition();  
            for (String url : p.getPatterns()) {
            	model.put("url", url);  //路径
            }  
            
            model.put("className", method.getMethod().getDeclaringClass().getName()); // 类名  
            
            ApiOperation apiOperation = method.getMethodAnnotation(ApiOperation.class);
            if(apiOperation != null) {
            	model.put("apiOperationValue", apiOperation.value()); //接口说明
            	model.put("apiOperationnotes", apiOperation.notes()); //接口发布说明
            }
         
            RequestMethodsRequestCondition methodsCondition = info.getMethodsCondition();  
            String type = methodsCondition.toString();  
            if (type != null && type.startsWith("[") && type.endsWith("]")) {  
                type = type.substring(1, type.length() - 1);  
                model.put("type", type); // 方法请求类型  
            }  
            urlList.add(model);  
        }
        
            System.out.println("----反向加载URL完成----");
	}

	@Override
	public void afterPropertiesSet() throws Exception {
		// TODO Auto-generated method stub
		
	}
	
	/**
	 * 通过访问IP获取访问方法信息
	 * @param lookupPath
	 * @return
	 */
	public HashMap<String, String> findUrlByUrlList(String lookupPath){
		for(HashMap<String, String> item : urlList) {
			String url = item.getOrDefault("url", "");
			if(!StringUtils.isBlank(url) && url.equals(lookupPath)) {
				return item;
			}
		}
		return null;
	}

}

• 在插入操作记录的地方取出对应的url信息即可

HashMap<String, String> urlItem = initUrlService.findUrlByUrlList(url);
String apiOperationnotes = urlItem.getOrDefault("apiOperationnotes", "")

.end