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springMVC系列之@Responsebody接口弹出f.txt下载问题

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目录

    最近遇到一个文件上传接口,调用时候出现f.txt下载问题,这个估计很多人都有遇到过,网上找资料,很多博客都是说用如下类似代码:

    <mvc:annotation-driven>
    		 <mvc:message-converters>
                <bean class="org.springframework.http.converter.StringHttpMessageConverter"/>
                <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
                     <property name="supportedMediaTypes">  
    		            <list>  
    		                <value>text/json;charset=UTF-8</value>  
    		                <value>text/html;charset=UTF-8</value>  
    		                <value>application/json;charset=UTF-8</value>  
    		            </list>  
    		        </property>    
                </bean>
       		 </mvc:message-converters>
    	</mvc:annotation-driven>
    

    反正基本大同小异,不过我测试过,在ie,360极速浏览器都有问题,Spring的版本是4.2.2.RELEASE

    接口代码如:

    @RequestMapping("/updateHandInfo")
    	@ResponseBody
    	public ResultModel updateHandInfo(@RequestParam(value = "file", required = false) MultipartFile file,HttpServletRequest request,
    			HandleDto handleDto)throws Exception{
    		try {
    			...
    			return new ResultModel(true,"签收成功",resultMap);
    		} catch (Exception e) {
    			logger.error("签收失败",e);
    			return new ResultModel(false,"签收失败",null);
    		}
    	}
    

    用网上的方法没解决问题,只能改变一下了,用response的方法,代码改造如:

    @RequestMapping("/updateHandInfo")
    	//@ResponseBody
    	public void updateHandInfo(@RequestParam(value = "file", required = false) MultipartFile file,HttpServletRequest request,
    			HandleDto handleDto,,HttpServletResponse response)throws Exception{
    			String jsonStr = "";
    		try {
    			...
    			jsonStr = JSONObject.toJSONString(new ResultModel(true,"签收成功",resultMap));
    		} catch (Exception e) {
    			logger.error("签收失败",e);
    			jsonStr =  JSONObject.toJSONString(new ResultModel(false,"签收失败","0"));
    		}
    		// fix bug 直接通过response返回
    		this.toJson(response, jsonStr);
    	}
    
    protected void toJson(HttpServletResponse response,String jsonString) throws IOException {
    		response.setContentType("text/html;charset=UTF-8");
    		response.getWriter().write(jsonString);
    	}
    

    ResultModel 是封装的Model,这种方法虽然比较麻烦点,不过是可以解决问题的,所以本博客记录起来,仅供互相学习参考

    posted @ 2020-05-28 17:18  smileNicky  阅读(450)  评论(0编辑  收藏  举报