因为需要MockHttpServletResponse对象来得到输出的内容，要引入的包

                 
      
       org.springframework
                  
      
       spring-test
                  
      
       5.1.6.RELEASE
              
     

注入ViewResolver解析页面

@Autowired    private InternalResourceViewResolver viewResolver;

使用过程

@GetMapping("test")    public JsonResult test(HttpServletRequest request,                           HttpServletResponse response)throws Exception{        ModelMap map = new ModelMap();        map.put("param_json", "asdasd");        map.put("loginuser", null);        View resolve = viewResolver.resolveViewName("design", Locale.CHINA);        MockHttpServletResponse mockResp = new MockHttpServletResponse();        resolve.render(map, request, mockResp);        System.out.println("rendered html : " + mockResp.getContentAsString());        return JsonResult.ok(mockResp.getContentAsString(), null);    }

查看打印和返回的结果，发现生成了html