在config中配置了文件的大小
@Configuration
public class CommonConfig {
@Bean
public MultipartConfigElement multipartConfigElement() {
MultipartConfigFactory factory = new MultipartConfigFactory();
factory.setMaxFileSize(1024L * 1024L);
return factory.createMultipartConfig();
}
}
当文件的大小超出设置值时，返回500错误
org.springframework.web.multipart.MultipartException: Could not parse multipart servlet request; nested exception is java.lang.IllegalStateException: org.apache.tomcat.util.http.fileupload.FileUploadBase$FileSizeLimitExceededException: The field file exceeds its maximum permitted size of 1048576 bytes.
at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.parseRequest(StandardMultipartHttpServletRequest.java:111)
at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.<init>(StandardMultipartHttpServletRequest.java:85)
at org.springframework.web.multipart.support.StandardServletMultipartResolver.resolveMultipart(StandardServletMultipartResolver.java:76)
at org.springframework.web.servlet.DispatcherServlet.checkMultipart(DispatcherServlet.java:1091)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:930)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:895)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:967)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:869)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:843)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:87)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
15:24:27.612 [http-nio-8080-exec-1] DEBUG o.s.w.s.m.m.a.ExceptionHandlerExceptionResolver - Invoking @ExceptionHandler method: public void com.bsd.article.manager.controller.ExceptionController.exceptionHandler(java.lang.Exception,javax.servlet.http.HttpServletResponse) throws java.io.IOException
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
15:24:27.615 [http-nio-8080-exec-1] DEBUG o.s.web.servlet.DispatcherServlet - Null ModelAndView returned to DispatcherServlet with name 'dispatcherServlet': assuming HandlerAdapter completed request handling
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
15:24:27.615 [http-nio-8080-exec-1] DEBUG o.s.web.servlet.DispatcherServlet - Successfully completed request
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:121)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:522)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1095)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:672)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1502)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1458)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalStateException: org.apache.tomcat.util.http.fileupload.FileUploadBase$FileSizeLimitExceededException: The field file exceeds its maximum permitted size of 1048576 bytes.
at org.apache.catalina.connector.Request.parseParts(Request.java:2846)
at org.apache.catalina.connector.Request.parseParameters(Request.java:3151)
at org.apache.catalina.connector.Request.getParameter(Request.java:1108)
at org.apache.catalina.connector.RequestFacade.getParameter(RequestFacade.java:380)
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:70)
... 22 more
Caused by: org.apache.tomcat.util.http.fileupload.FileUploadBase$FileSizeLimitExceededException: The field file exceeds its maximum permitted size of 1048576 bytes.
at org.apache.tomcat.util.http.fileupload.FileUploadBase$FileItemIteratorImpl$FileItemStreamImpl$1.raiseError(FileUploadBase.java:633)
at org.apache.tomcat.util.http.fileupload.util.LimitedInputStream.checkLimit(LimitedInputStream.java:76)
at org.apache.tomcat.util.http.fileupload.util.LimitedInputStream.read(LimitedInputStream.java:135)
at java.io.FilterInputStream.read(FilterInputStream.java:107)
at org.apache.tomcat.util.http.fileupload.util.Streams.copy(Streams.java:98)
at org.apache.tomcat.util.http.fileupload.util.Streams.copy(Streams.java:68)
at org.apache.tomcat.util.http.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:293)
at org.apache.catalina.connector.Request.parseParts(Request.java:2776)
... 26 more
需要怎么做才能返回200的友好提示?
1、文件上传大小可在js框架里就做验证了。推荐JS上传框架uploadify.js
2、既然使用了springboot，那你的文件上传的处理应该在Controller里处理。
3、如果你需要的仅仅是错误信息跳转到错误页面而不是打印堆栈信息，只需要实现一个@RequestMapping(value = "/error")的Controller实现。
4、给你一个springboot实现上传的小demo，可借鉴。
/**
* Created by Projack
* 上传视图
*/
@Controller
@RequestMapping(value = "/admin/file")
public class FileController {
@Value("${images.domain.url}")
private String IMAGES_DOMAIN_URL;
@Value("${images.localhost.url}")
private String IMAGES_LOCALHOST_URL;
//获取分隔符（不同系统不同）
String sep = System.getProperty("file.separator");
/**
* 上传文件到七牛服务器
* @param file
* @return
*/
@RequestMapping(value = "/upload")
@ResponseBody
public String upload(@RequestParam(value="file", required=false) MultipartFile file){
String imgPath = "";
try{
String fileName = file.getOriginalFilename();
String localPath = IMAGES_LOCALHOST_URL + sep + fileName;
FileCopyUtils.copy(file.getBytes(), new File(localPath)); //图片保存本地服务器
imgPath = QiNiuUtils.upload(localPath); //图片上传七牛云服务器
FileSystemUtils.deleteRecursively(new File(localPath)); //删除本地服务器的图片
imgPath = IMAGES_DOMAIN_URL + "/" + imgPath;
}catch(Exception e){
e.printStackTrace();
}
return imgPath;
}
/**
* 删除文件到七牛服务器
* @param fileName
*/
@RequestMapping(value = "/delete")
public void delete(String fileName){
QiNiuUtils.delete(fileName);
}
}
拦截这个异常：
@ControllerAdvice
public class ExceptionProcess {
// 对这个异常的统一处理，返回值 和Controller的返回规则一样
@ExceptionHandler(MultipartException.class)
public String handleAll(Throwable t){
// TODO do sth
return "view";
}
}