Spring mvc文件上传过大异常捕获处理:
PS:去掉Spring文件大小属性,使用拦截器的方式来判断文件大小是否超过限制
1.上传配置:
<!-- 配置文件上传类型解析器 multipartResolver-->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver" />
2.添加文件上传拦截器
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.commons.fileupload.servlet.ServletRequestContext;
import org.springframework.web.multipart.MaxUploadSizeExceededException;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
/**
* @ClassName: FileUploadInterceptor
* @Description: 文件上传拦截过滤
*/
public class FileUploadInterceptor implements HandlerInterceptor {
//文件大小
private long maxSize;
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
if(request!=null && ServletFileUpload.isMultipartContent(request)) {
ServletRequestContext ctx = new ServletRequestContext(request);
long requestSize = ctx.contentLength();
if (requestSize > maxSize) {
throw new MaxUploadSizeExceededException(maxSize);
}
}
return true;
}
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
}
@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
}
public void setMaxSize(long maxSize) {
this.maxSize = maxSize;
}
}
3.添加异常处理类
/**
* @ClassName: GlobalExceptionHandler
* @Description: 全局异常处理类
*/
@RestControllerAdvice
public class GlobalExceptionHandler {
private static final Log logger = LogFactory.get();
/**
* @Description: 文件上传过大异常
* @param ex
* @return
*/
@ExceptionHandler(MaxUploadSizeExceededException.class)
@ResponseBody
public BaseResult processException(MaxUploadSizeExceededException ex) {
logger.error(ex.getMessage(), ex);
//自定义信息返回给调用端
return new BaseResult("413", "文件过大!");
}
}
配置完成,可以捕获文件上传中因文件过大引起的错误,自定义返回错误信息!