添加依赖
<!--文件上传-->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>
配置文件上传解析器
<!--配置文件上传解析器-->
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize" value="5242880" />
<property name="defaultEncoding" value="UTF-8" />
</bean>
测试
-
编写controller
@Controller @RequestMapping("/account") public class AccountController { @RequestMapping(path="/upload") public String upload(HttpServletRequest request, MultipartFile upload,Model model) throws IOException { System.out.println("springmvc方式的文件上传"); //获取要上传的文件目录 String path = request.getSession().getServletContext().getRealPath("/uploads"); System.out.println("path:"+path); //根据文件上传的目录创建File对象，如果不存在则创建1个File对象 File file = new File(path); if(!file.exists()){ //创建一个file对象 file.mkdirs(); } //获取文件上传名称 String filename = upload.getOriginalFilename(); //完成文件上传 upload.transferTo(new File(path,filename)); model.addAttribute("msg", "欢迎你 springmvc"); return "success"; } } -
在index.jsp里面定义超链接
<form action="/account/upload" method="post" enctype="multipart/form-data"> 文件: <input type="file" name="upload"></input> <input type="submit" value="提交"> </form>
全局异常处理器
如果不加以异常处理，错误信息肯定会抛在浏览器页面上，这样很不友好，所以必须进行异常处理。文章来源：https://www.toymoban.com/news/detail-799842.html
异常处理思路
系统的dao、service、controller出现都通过throws Exception向上抛出，最后由springmvc前端控制器交由异常处理器进行异常处理，如下图：文章来源地址https://www.toymoban.com/news/detail-799842.html
创建异常处理器
@Component
public class CustomExceptionResolver implements HandlerExceptionResolver {
@Override
public ModelAndView resolveException(HttpServletRequest request,
HttpServletResponse response, Object handler, Exception ex) {
ModelAndView modelAndView = new ModelAndView();
modelAndView.addObject("message", ex.getMessage());
modelAndView.setViewName("error");
return modelAndView;
}
}
测试
- 编写controller
@Controller
@RequestMapping("/account")
public class AccountController {
@RequestMapping("/findAccount14")
public String findAccount14(Model model) {
model.addAttribute("msg", "欢迎你 springmvc");
//模拟异常信息
int i = 10/0;
return "success";
}
}
- 在index.jsp里面定义超链接
<a href="/account/findAccount14">异常处理器</a>
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