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Java Spring MVC 上傳下載文件配置及controller方法詳解

更新時間：2016年09月30日 16:47:29 作者：回魔一笑

這篇文章主要介紹了Java Spring MVC 上傳下載文件配置及controller方法詳解,本文介紹的非常詳細，具有參考借鑒價值，需要的朋友可以參考下

下載：

1.在spring-mvc中配置(用于100M以下的文件下載)

<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> 
<property name="messageConverters"> 
<list> 
<!--配置下載返回類型-->
<bean class="org.springframework.http.converter.ByteArrayHttpMessageConverter"/> 
<bean class="org.springframework.http.converter.StringHttpMessageConverter"> 
<!--配置編碼方式-->
<property name="supportedMediaTypes" value="application/json; charset=UTF-8" /> 
</bean> 
</list> 
</property> 
</bean>

下載文件代碼

@RequestMapping("/file/{name.rp}")
public ResponseEntity<byte[]> fileDownLoad(@PathVariable("name.rp")String name, HttpServletRequest request,HttpServletResponse response) {
// @PathVariable String name,
// @RequestParam("name")String name,
// System.out.println("<name>"+name);
// System.out.println(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
ResponseEntity<byte[]> re = null;
try {
/**
* css,js,json,gif,png,bmp,jpg,ico,doc,docx,xls,xlsx,txt,swf,pdf
* **/
//下載防止靜態(tài)加載干擾
Feelutile f=new Feelutile();
name=f.getfileformat(name);
String pathString="C:\\tempDirectory\\"+name; 
File file=new File(pathString);
HttpHeaders headers=new HttpHeaders();
//String filename=URLEncoder.encode(name, "UTF-8");//為了解決中文名稱亂碼問題 
String filename=new String(name.getBytes("utf-8"),"utf-8");
byte[] by=FileUtils.readFileToByteArray(file);
headers.setContentType(MediaType.APPLICATION_OCTET_STREAM);
//URLEncoder.encode(filename, "UTF-8")
headers.setContentDispositionFormData("attachment",filename);
headers.setContentLength(by.length);
re=new ResponseEntity<byte[]>(by, headers, HttpStatus.CREATED);
} catch (Exception e) {
e.printStackTrace();
try {
request.getRequestDispatcher("/error/404.jsp").forward(request, response);
} catch (ServletException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
return re;
}

上傳文件:

1在spring-mvc中配置

<!--4.文件上傳 配置 file upload -->
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="defaultEncoding">
<value>UTF-8</value>
</property>
<property name="maxUploadSize">
<value>1048576000</value>
</property>
<property name="maxInMemorySize">
<value>40960</value>
</property>
</bean>

在controller中代碼如下

@RequestMapping(value="/upload", method = RequestMethod.POST)
@ResponseBody
public Json upload(Doc doc, @RequestParam("uploadFile") CommonsMultipartFile file) {
Json j = new Json();
try {
String realpath = this.servletContext.getRealPath("/upload"); 
String uploadFileFileName = file.getOriginalFilename(); 
String uploadFileFileNameWithoutSpace = uploadFileFileName.replaceAll(" ", ""); 
String fileType = uploadFileFileNameWithoutSpace.substring(uploadFileFileNameWithoutSpace.lastIndexOf("."));
File targetFile = new File(realpath+File.separator, uploadFileFileNameWithoutSpace);
if (targetFile.exists()) {
targetFile.delete();
}
file.getFileItem().write(targetFile); 
docService.upload(doc,uploadFileFileNameWithoutSpace);
j.setSuccess(true);
j.setMsg("Upload manual successfully");
}catch (Exception e) {
logger.error(ExceptionUtil.getExceptionMessage(e));
j.setMsg("Upload manual unsuccessfully");
}
return j;
}

以上所述是小編給大家介紹的Java Spring MVC 上傳下載文件配置及controller方法詳解，希望對大家有所幫助，如果大家有任何疑問請給我留言，小編會及時回復大家的。在此也非常感謝大家對腳本之家網(wǎng)站的支持！

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