1、jsp前端
文件上傳 標籤中添加enctype屬性 其值為multipart/form-data 3、 表單 -->編號 名字 照片
2、servlet後臺
package Servlet.bookServlet; 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 javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.*; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; import java.util.List; @WebServlet(name = "UploadImageServlet") public class UploadImageServlet extends HttpServlet { @Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.doPost(request,response); } @Override protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { //1、判斷請求是不是multipart請求 if(!ServletFileUpload.isMultipartContent(request)){ throw new RuntimeException("當前請求不支持文件上傳"); } System.out.println("開始上傳文件"); //2、創建FileItem工廠==>文件寫入硬盤的作用 try { DiskFileItemFactory factory = new DiskFileItemFactory(); //3、創建temp臨時文件夾 String tempPath ="D: omcatapache-tomcat-9.0.35-windows-x64apache-tomcat-9.0.35webappslibrarySystemweb et emp"; File tempFile = new File(tempPath); factory.setRepository(tempFile); //4、設置使用臨時文件的邊界值,大於該值,上傳文件先保存在臨時文件中,小於該值,則直接寫入內存 //單位是字節 factory.setSizeThreshold(1024*1024*1); //5、創建文件上傳核心組件 // 調用ServletFileUpload.parseRequest方法解析request對象,得到一個保存了所有上傳內容的List對象。 ServletFileUpload upload = new ServletFileUpload(factory); upload.setHeaderEncoding("utf-8");//可以解決文件名中文亂碼 upload.setFileSizeMax(1024*1024*2); String bNo="defaultBNo",bName="defaultBName"; //6、解析請求 List
[f2h0b53ohn ] jsp+servlet簡單實現上傳文件功能(保存目錄改進)已經有280次圍觀