java递归算法

	
	@RequestMapping(value="batchExport")
	@ResponseBody
	public List batchExport(@RequestParam(required = false) String projectid){
//		创建对象[文件夹基本属性表(FmProject)]
		FmProject fmProject = new FmProject();
//		把前段传递的文件夹ID放到对象里面
		fmProject.setId(projectid);
		AllSonProject = new ArrayList<>();
//
		AllSonProject.add(fmProject);
//		根据当前对象获取 获取当前文件夹的所有子文件夹
		List SonProject = this.getProjects(fmProject);
		return AllSonProject;
	}

	public List getProjects(FmProject fmProject) {
		List childProject = this.projectService.getChildProject(fmProject);
		//
		if(childProject.size()>0){
			for (FmProject tempParent: childProject) {
//				把文件的对象存放到 AllSonProject 集合中
				AllSonProject.add(tempParent);
//				使用递归算法(方法中调用方法本身)
				this.getProjects(tempParent);
			}
		}
		return AllSonProject;
	}