1 通过commons-fileupload来实现 导入相关jar包
commons-fileupload，commons-io
2 配置springmvc的配置解析器
mvc:
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="defaultEncoding" value="utf-8"></property>
<property name="maxUploadSize" value="10485760000"></property>
<property name="maxInMemorySize" value="40960"></property>
</bean>
3 jsp页面
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>My JSP 'index.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> </head> <body> <form action="upload.do" method="post" enctype="multipart/form-data"> file:<input type="file" name="file"/> <input type="submit" value="上传"/> </form> </body> </html>
4 controller代码
@Controller public class FileUploadController { @RequestMapping("/upload") public String fileupload(@RequestParam("file")CommonsMultipartFile file,HttpServletRequest req) throws IOException{ //获取文件名 //file.getOriginalFilename(); //获取上传文件的路径 String path = req.getRealPath("/fileupload"); InputStream is = file.getInputStream(); OutputStream os = new FileOutputStream(new File(path,file.getOriginalFilename())); int len = 0; byte[] buffer = new byte[400]; while((len=is.read(buffer))!=-1){ os.write(buffer,0,len); os.close(); is.close(); } return "/index.jsp"; } }
批量上传的代码
@RequestMapping("/batch")
public String fileupload(@RequestParam("file")CommonsMultipartFile file[],
HttpServletRequest req) throws IOException{
//获取文件名
//file.getOriginalFilename();
//获取上传文件的路径
String path = req.getRealPath("/fileupload");
for (int i = 0; i < file.length; i++) {
InputStream is = file[i].getInputStream();
OutputStream os = new FileOutputStream(new File(path,file[i].getOriginalFilename()));
int len = 0;
byte[] buffer = new byte[400];
while((len=is.read(buffer))!=-1)
os.write(buffer,0,len);
os.close();
is.close();
}
return "/index.jsp";
}