如何实现springboot中controller之间的相互调用

@Autowired
private RestTemplate restTemplate ;//自动装配restTemplate 
-------------------返回json字符串类型----------------------------------
@RequestMapping("/selectHospatal")
	@ResponseBody
	public String selectHospatal()
			throws Exception {
        //返回结果  pageNum
		PageData result = new PageData();
		PageData pageData =getPageData();
        int page=Integer.parseInt(pageData.getString("page"));
		int limit=Integer.parseInt(pageData.getString("limit"));
		String name="";
		name=pageData.getString("name");
		User user = (User) SecurityUtils.getSubject().getPrincipal();
			/*	管理员注册为0	患者为1药厂注册为3	医生注册为4
			 */
			if(name==null){
				name="";
			}
		String forObject="";
		int status=user.getStatus();//类型
		String zsId=user.getType_id();//类型id
		if(status==5){//诊室注册为5//getManageurl是别的springboot服务的地址如：localhost:8080
			String url = getManageurl+"/doctorController/selectHospatal?crid="+zsId+"&name="+name+"&page="+page+"&limit="+limit;
			forObject = restTemplate.getForObject(url, String.class);
		}
		if(status==6){//科室注册为6
			String url = getManageurl+"/doctorController/selectHospatal?dtid="+zsId+"&name="+name+"&page="+page+"&limit="+limit;
			forObject = restTemplate.getForObject(url, String.class);
        }
		if(status==2){//医院注册为2
     String url = getManageurl+"/doctorController/selectHospatal?houid="+zsId+"&name="+name+"&page="+page+"&limit="+limit;
	forObject = restTemplate.getForObject(url, String.class);
		}
    	return forObject;//返回的是json字符串类型
	}
--------------返回PageData对象---------------------------------
/**
 *   查询数据
	 * @return
	 * @throws Exception
	 */
	@RequestMapping("/viewd")
    @ResponseBody
	public PageData viewd() throws Exception{
		//参数
		PageData pageData = getPageData();
		try {
			String url = getManageurl+"/doctorController/view?id="+pageData.getString("id");
		//	String forObject = restTemplate.getForObject(url, String.class);
  			ResponseEntity<PageData> userResponseEntity = RestTemplateUtil.postJson(url, "", PageData.class, restTemplate);
			PageData body = userResponseEntity.getBody();
			return body;
		} catch (Exception e) {
			logger.error(e.toString());
			throw new Exception(e.toString());
		}
	}