SpringMVC实现多文件上传源码
import java.io.File;import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.util.Date;
import java.util.Iterator;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.swing.filechooser.FileNameExtensionFilter;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;
import org.springframework.web.multipart.commons.CommonsMultipartFile;
import org.springframework.web.multipart.commons.CommonsMultipartResolver;
import org.springframework.web.servlet.ModelAndView;
@Controller
@RequestMapping("/file")
public class UploadController {
//字节输入流文件上传
@RequestMapping("/upload")
public String upload (@RequestParam("file") CommonsMultipartFile[] files, HttpServletRequest request) {
for (int i = 0; i < files.length; i++) {
System.out.println("fileName---------->" + files.getOriginalFilename());
if (!files.isEmpty()) {
int pre = (int) System.currentTimeMillis();
try {
//拿到输出流，同时重命名上传的文件
FileOutputStream os = new FileOutputStream("H:/" + new Date().getTime() + files.getOriginalFilename());
//拿到上传文件的输入流
FileInputStream in = (FileInputStream) files.getInputStream();
//以写字节的方式写文件
int b = 0;
while ((b = in.read()) != -1) {
os.write(b);
}
os.flush();
os.close();
in.close();
int finaltime = (int) System.currentTimeMillis();
System.out.println(finaltime - pre);
} catch (Exception e) {
e.printStackTrace();
System.out.println("上传出错");
}
}
}
return "/success";
}
//包装类实现文件上传
@RequestMapping("/upload2")
public String upload2(HttpServletRequest request, HttpServletResponse response) throws IllegalStateException, IOException {
//创建一个通用的多部分解析器
CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(request.getSession().getServletContext());
//判断 request 是否有文件上传,即多部分请求
if (multipartResolver.isMultipart(request)) {
//转换成多部分request
MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest) request;
//取得request中的所有文件名
Iterator<String> iter = multiRequest.getFileNames();
while (iter.hasNext()) {
//记录上传过程起始时的时间，用来计算上传时间
int pre = (int) System.currentTimeMillis();
//取得上传文件
MultipartFile file = multiRequest.getFile(iter.next());
if (file != null) {
//取得当前上传文件的文件名称
String myFileName = file.getOriginalFilename();
//如果名称不为“”,说明该文件存在，否则说明该文件不存在
if (myFileName.trim() != "") {
System.out.println(myFileName);
//重命名上传后的文件名
String fileName = "demoUpload" + file.getOriginalFilename();
//定义上传路径
String path = "H:/" + fileName;
File localFile = new File(path);
file.transferTo(localFile);
}
}
//记录上传该文件后的时间
int finaltime = (int) System.currentTimeMillis();
System.out.println(finaltime - pre);
}
}
return "/success";
}
@RequestMapping("/toUpload")
public String toUpload() {
return "/upload";
}
}
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