vue实现form表单post请求结合Servlet实现文件上传

  1. 前端测试页面代码:





  1. 后端servlet接收代码
package jt3.control.zygkh;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;

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.FileUploadException; 
import org.apache.commons.fileupload.disk.DiskFileItemFactory; 
import org.apache.commons.fileupload.servlet.ServletFileUpload;

import jtacc.filter.JTKit;
import jtacc.jtpub.DT; 

@WebServlet(urlPatterns = "/upfile/file")  
public class UploadServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		System.out.println(11);
		this.doPost(request, response);
    }


    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    	String uri="/u/file/"+DT.getFormatDate("yyyyMMdd")+"/";  //定义路径
    	String tmpPath=JTKit.getBaseDIR()+uri;//此处为个人项目路径,根据需求定义路径
    	DiskFileItemFactory factory = new DiskFileItemFactory();
		factory.setRepository(new File(tmpPath));//临时文件存储路径
		ServletFileUpload fileUpload = new ServletFileUpload(factory);//核心操作对象
		fileUpload.setHeaderEncoding("utf-8");//防乱码
		try {
			//此处如果要实时强行转换则需要下载jar包(commons-fileupload-1.3.3.jar)
			List list = fileUpload.parseRequest(request);
			for (FileItem fileItem : list) {
				InputStream in = fileItem.getInputStream();
				String filename = fileItem.getName();
				if (fileItem != null) {
					System.out.println(filename);
					int len = 0;
					byte[] array = new byte[1024];
					FileOutputStream fos = new FileOutputStream(tmpPath+filename);
					while((len = in.read(array))!=-1){//表示每次最多读1024个字节
						fos.write(array,0,len);
						fos.flush();
					}
					fos.close();
					in.close();
					fileItem.delete();
					response.setCharacterEncoding("UTF-8");
					String realPath = uri+filename;
					response.getWriter().append(realPath);
				}
			}
		} catch (FileUploadException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
    }
    

}

  1. 测试结果

在这里插入图片描述

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