12@365 java上传文件（word、图片等）至服务器

这种方法是servlet，编写好在web.xml里配置servlet-class和servlet-mapping即可使用

后台（服务端）java服务代码：（上传至ROOT/lqxcPics文件夹下）

package net.htwater.util;

import java.io.File;

import java.io.IOException;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.Iterator;

import java.util.List;

import java.util.Map;

import javax.servlet.ServletException;

import javax.servlet.annotation.WebServlet;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.FileItem;

import org.apache.commons.fileupload.disk.DiskFileItemFactory;

import org.apache.commons.fileupload.servlet.ServletFileUpload;

import org.apache.log4j.Logger;

import java.io.FileNotFoundException;

@WebServlet(description = "基础数据文件上传并立即处理", urlPatterns = { "/uploadPics" })

public class UploadPics extends HttpServlet {

private static final long serialVersionUID = 1L;

private static final Logger log=Logger.getLogger(UploadPics.class.getName());

    

@SuppressWarnings("rawtypes")

public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

request.setCharacterEncoding("UTF-8");

DiskFileItemFactory factory = new DiskFileItemFactory();

ServletFileUpload upload = new ServletFileUpload(factory);

try {

List items = upload.parseRequest(request);

Iterator itr = items.iterator();

while (itr.hasNext()) {

FileItem item = (FileItem) itr.next();

if (item.isFormField()) {

System.out.println("表单参数名:" + item.getFieldName() + "，表单参数值:" + item.getString("UTF-8"));

} else {

if (item.getName() != null && !item.getName().equals("")) {

System.out.println("上传文件的大小:" + item.getSize());

System.out.println("上传文件的类型:" + item.getContentType());

System.out.println("上传文件的名称:" + item.getName());

String Path = this.getServletContext().getRealPath("");

               String uploadPath=Path.substring(0, Path.lastIndexOf("\"))+"\ROOT\lqxcPics\";

File tempFile = new File(item.getName());

File file = new File(uploadPath, tempFile.getName());

item.write(file);

request.setAttribute("upload.message", "上传文件成功！");

}else{

request.setAttribute("upload.message", "没有选择上传文件！");

}

}

}

}catch(FileNotFoundException e){

e.printStackTrace();

} catch (Exception e) {

e.printStackTrace();

request.setAttribute("upload.message", "上传文件失败！");

}

request.getRequestDispatcher("/uploadResult.jsp").forward(request, response);

}

}

配置web.xml

 

    UploadPics

    net.htwater.util.UploadPics

 

 

    UploadPics

    /service/uploadpics

 

前端（页面）测试代码：

 

 DEMO下载地址：https://dwz.cn/fgXtRtnu