前端代码
注意： enctype属性
<form action="tempServlet" method="post" enctype="multipart/form-data"> file:<input type="file" name="fileName"/> <input type="submit" name="submit" value="submit"/> </form>
后端代码
package com.imooc.servlet; import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.annotation.MultipartConfig; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.Part; @WebServlet("/tempServlet") @MultipartConfig // servlet用于文件上传的注解 public class TempServlet extends HttpServlet { @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { doPost(req, resp); } @Override protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // part代表上传的文件 Part part = request.getPart("fileName"); //获取文件名称，需要在请求头中获得字符串，在截取字符串获取 String header = part.getHeader("Content-Disposition"); String fileName = header.substring(header.indexOf("filename=\"") + 10, header.lastIndexOf("\"")); // 注意：part.getName() //返回 <input type="file" name="fileName"/> 中的fileName，而不是上传的文件的名称 String path = super.getServletContext().getRealPath("/fileupload"); System.out.println("path---->"+path); part.write(path+"/"+fileName); } }
