LIYUANWAI 2018-12-07 20:19:44

完

关于springmvc下载大的文件(2G)爆出溢出请求帮助

问题描述

客户提出部分地方的资料上传需达到2G的效果，好不容易把内存调大了结果下载的爆出一下问题百度了一番说是一次性读取不了多的数据，只能是片面的取出来。

org.springframework.web.util.NestedServletException: Handler processing failed; nested exception is java.lang.OutOfMemoryError: Java heap space

at org.springframework.web.servlet.DispatcherServlet.triggerAfterCompletionWithError(DispatcherServlet.java:1302)

at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:977)

at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)

at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:965)

at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:856)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)

at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:841)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at com.opensymphony.sitemesh.webapp.SiteMeshFilter.obtainContent(SiteMeshFilter.java:129)

at com.opensymphony.sitemesh.webapp.SiteMeshFilter.doFilter(SiteMeshFilter.java:77)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61)

at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)

at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)

at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)

at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)

at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)

at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)

at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)

at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)

at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)

at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)

at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)

at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344)

at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:85)

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)

at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:615)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)

at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)

at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:620)

at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)

at java.lang.Thread.run(Unknown Source)

运行环境

jdk7+tomcat7+mysql+eclipse IDEA+maven

项目技术(必填)

spring+spring mvc+mybatis+bootstrap+jquery

项目截图(必填)

运行截图(必填)

相关代码片段

//上传资料

public String fileUpload(@RequestParam("file") MultipartFile file, OpaPlanTask opaPlanTask,

HttpServletRequest request,RedirectAttributes redirectAttributes, Model model) {

String itemParentId ="0";

// 获得原始文件名

String fileName = file.getOriginalFilename();

//获取文件后缀

String sufFix = fileName.substring(fileName.lastIndexOf(".") + 1).toLowerCase();

System.out.println("原始文件名:" + fileName);

System.out.println("原始文件后缀名:" + sufFix);

//临时路径

String basePath = Global.getConfig("upload.attachedBasePath");

StringBuffer fileNameSB = new StringBuffer();

StringBuffer filePathSB = new StringBuffer();

String attachedPath = new String();

String path = new String();

if (!file.isEmpty()) {

try {

if (!Global.getConfig("upload.fileType").contains(sufFix)) {

addMessage(model, "文件上传格式不正确，多个文件请压缩后上传");

return "modules/opa/opaPlanTaskExcuteInputScore";

}

OpaScheme opaScheme = opaSchemeService.get(opaPlanTask.getPlanId());

String opaSchemeName=opaScheme.getName();

//信息录入

String officeName = UserUtils.getUser().getOffice().getName();

path = filePathSB.append(basePath).append(DateUtils.getYear()).append("/").append(opaSchemeName).append("/")

.append(officeName).append("/").toString();

fileName = fileNameSB.append(opaPlanTask.getName()).append(".").append(sufFix).toString();

attachedPath = filePathSB.append(fileName).toString();

File dir = new File(path, fileName);

if (!dir.exists())

dir.mkdirs();

// MultipartFile自带的解析方法

file.transferTo(dir);

} catch (Exception e) {

e.printStackTrace();

}

} else {

addMessage(model, "请选择文件");

return "modules/opa/opaPlanTaskExcuteInputScore";

}

System.out.println("上传文件到:" + attachedPath);

opaPlanTask.setId(request.getParameter("id"));

System.out.println("id="+request.getParameter("id"));

opaPlanTask.setAttachedPath(attachedPath);

opaPlanTask.setStatus(DictUtils.getDictValue("待改动", "opa_planTask_status", ""));

opaPlanTaskDao.update(opaPlanTask);

opaPlanTaskService.save(opaPlanTask);

model.addAttribute("opaPlanTask", opaPlanTask);

addMessage(model, "文件上传成功");

return "modules/opa/opaPlanTaskExcuteInputScore";

}

注意事项

0个评论

2个牛币 springmvc springmvc下载大文件异常

所有回答列表(3)

sourcezero LV5 2018年12月24日

看你代码是一次性读取文件，这读取，文件小还好，太大就挂了；一般都是缓存来一片一片读取的哦

 try {   
   File file = new File(session.getServletContext().getRealPath("/")+"attachment/"+filename);
             if (file.exists()) {   
                String dfileName = file.getName();   
                InputStream fis = new BufferedInputStream(new FileInputStream( file));   
                 response.reset();   
                 response.setContentType("application/x-download");
                 response.addHeader("Content-Disposition","attachment;filename="+ new String(dfileName.getBytes(),"iso-8859-1"));
                 response.addHeader("Content-Length", "" + file.length());   
                OutputStream toClient = new BufferedOutputStream(response.getOutputStream());   
               response.setContentType("application/octet-stream");   
                 byte[] buffer = new byte[1024 * 1024 * 4]; //使用缓存慢慢读取，支持大文件下载
                 int i = -1;   
                 while ((i = fis.read(buffer)) != -1) {   
                     toClient.write(buffer, 0, i);  
                 }   
                 fis.close();   
                 toClient.flush();   
                 toClient.close();   
                 try {
                 response.wait();
           } catch (InterruptedException e) {
            e.printStackTrace();
           }  
             } else {   
                PrintWriter out = response.getWriter();   
                out.print("<script>");   
                out.print("alert(\"未找到文件\")");   
                out.print("</script>");   
             }   
         } catch (IOException ex) {   
            PrintWriter out = response.getWriter();   
                out.print("<script>");   
                out.print("alert(\"未找到文件\")");   
                out.print("</script>");   
         }

评论(0) 最佳答案

月之氏族 LV23 2018年12月8日

只有切片了，一般上传大文件的都是切片，把一个文件切成 1M 一片的，然后上传，可做断点续传，而且一般大的文件还要验证MD5 , 做秒传

yy1124218793 LV9 2018年12月13日

使用腾讯云阿里云对象存储

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关于springmvc下载大的文件(2G)爆出 溢出 请求帮助

关于springmvc下载大的文件(2G)爆出溢出请求帮助