maven项目中获取类路径和项目路径的写法示例

        String fileName = "verifierTemplate.xlsx";
        String path = this.getClass().getResource("/").getPath()+fileName;

 public java.net.URL getResource(String name) {
        name = resolveName(name);
        ClassLoader cl = getClassLoader0();
        if (cl==null) {
            // A system class.
            return ClassLoader.getSystemResource(name);
        }
        return cl.getResource(name);
    }

  System.out.println("路径一为："+this.getClass().getResource("").getPath());
  System.out.println("路径二为："+this.getClass().getResource("/").getPath());

this.getClass().getClassLoader().getResource("").getPath()和this.getClass().getResource("/").getPath()得到的结果一样，均为：/D:/workspace/meas/target/classes/ 从源码中可以看到其实在getResource方法中封装了getClassLoader().getResource("")

      File directory = new File("");// 参数为空
      String courseFile = directory.getCanonicalPath();
      System.out.println("项目路径为："+courseFile);