code: public static String getBaseDirName() {
          String fileName = null;
          // 先取classes
          java.net.URL url1 = FileUtils.class.getResource("/");
          if (url1 != null) {
              fileName = url1.getFile();
          } else {
              // 取不到再取lib
              String jarpath = ReflectUtils.getCodeBase(FileUtils.class);
              if (jarpath != null) {
                  int sofaidx = jarpath.lastIndexOf("sofa");
                  if (sofaidx > -1) { // 如果有sofa开头的jar包
                      fileName = jarpath.substring(0, sofaidx);
                  } else {
                      int sepidx = jarpath.lastIndexOf(File.separator);
                      if (sepidx > -1) {
                          fileName = jarpath.substring(0, sepidx + 1);
                      }
                  }
              }
          }
          // 将冒号去掉 “/”换成“-”
          if (fileName != null) {
              fileName = fileName.replace(":", "").replace(File.separator, "/")
                  .replace("/", "-");
              if (fileName.startsWith("-")) {
                  fileName = fileName.substring(1);
              }
          } else {
              // LOGGER.warn("can not parse webapp baseDir path");
              fileName = "UNKNOW_";
          }
          return fileName;
      }
docs: 得到项目所在路径
  
  @return 项目所在路径