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如果为体现项目的层次感，当我们使用request的时候，一般都是在控制层中使用的，没有必要将request也传递到service使用，所以首先是讲一下在controller获取当前的项目的绝对路径
public Message<Object> uploadImgsFile(HttpServletRequest request) { //1 String
realPath =
request.getSession().getServletContext().getRealPath(File.separator);
System.out.println(realPath); //2 String realPath2 =
request.getServletContext().getRealPath(File.separator);
System.out.println(realPath2); return null; }
如果当前想要获取当前项目的绝对路径，而此时又不在controller，同时又不想传递request的参数到service层，可以这样操作
//代码片段 //现获取当前的路径 WebApplicationContext webApplicationContext =
ContextLoader.getCurrentWebApplicationContext(); ServletContext servletContext
= webApplicationContext.getServletContext(); String realPath =
servletContext.getRealPath(File.separator); System.out.println(realPath);
经过上面的操作可以获取项目的路径，以此来方便自己项目的需求
