【发布时间】：2020-10-21 12:17:07
【问题描述】：
我正在做一个小项目，我正在尝试 dd 个人资料，以便用户可以上传他的个人资料图片，所以当我搜索参考资料时，我发现了一些 Youtube 视频，我开始编码，我想链接图片用户上传为他的个人资料图片。 那里我收到错误“类型部分不明确”（在 jsp 中）
<%@page
import="java.sql.*,java.text.*,javax.servlet.*,java.security.MessageDigest,
java.security.NoSuchAlgorithmException
,javax.mail.*,javax.mail.internet.*,
java.io.File,java.io.PrintWriter,java.awt.List"%>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%!
%>
<%
String username=(String) session.getAttribute("nkey");
String f_name =request.getParameter("f_name");
String l_name =request.getParameter("l_name");
Part part =request.getPart("profile_link");(here I'm getting the issue)
String id_link =request.getParameter("id_link");
String age =request.getParameter("age");
String gender =request.getParameter("gender");
String address =request.getParameter("address");
String pincode =request.getParameter("pincode");
String qualification =request.getParameter("qualification");
String year =request.getParameter("year");
String college_name =request.getParameter("college_name");
String state =request.getParameter("state");
String country =request.getParameter("country");
%>
<%!
private static final String SAVE_DIR="Pictures";
%>
<%response.setContentType("text/html;charset=UTF-8");%>
<%
PrintWriter outt=response.getWriter();
String savePath="C:/Users/thots/Desktop/My World/internsip/Student_Portal 2.0/WebContent"+File.separator+SAVE_DIR;
File fileSaveDir=new File(savePath);
String fileName=extractFileName(part);
part.write(savePath + File.separator + fileName);
String filePath=savePath+File.separator + fileName;
%>
<%
try
{
Class.forName("com.mysql.jdbc.Driver");
Connection con=DriverManager.getConnection("jdbc:mysql://localhost:3306/Student_Portal 2.0","root","");
Statement st=con.createStatement();
int i=st.executeUpdate("insert into student_details values('"+username+"','"+f_name+"','"+l_name+"','"+filePath+"','"+id_link+"','"+age+"','"+gender+"','"+address+"','"+pincode+"','"+qualification+"','"+year+"','"+college_name+"','"+state+"','"+country+"')");
if(i>0)
{
response.sendRedirect("index.jsp");
Statement stt=con.createStatement();
String sql="update user_login set P_Status='1' where username='"+username+"'";
stt.executeUpdate(sql);
}
else
{
System.out.println("Failed");
}
}
catch (Exception e)
{
e.printStackTrace();
}
%>
HTML代码
<form action="add_student_details.jsp" enctype="multipart/form-data" method="post">
<div class="container-fluid">
<div>
<label for="img">Upload Profile Picture</label>
<input name="profile_link" type="file" class="form-control" required>
</div>
<br>
<div>
<label for="img">Upload Your ID card</label>
<input name="id_link" type="file" class="form-control" required>
</div>
<br>
<div class="row">
<div class="col-6">
<input name="f_name" type="text" class="form-control" placeholder="First name" required>
</div>
<div class="col-6">
<input name="l_name" type="text" class="form-control" placeholder="Last name" required>
</div>
</div>
<br>
<div class="row">
<div class="col-6">
<input name="age" type="number" class="form-control" placeholder="Age" required>
</div>
<div class="col-6">
<select name="gender" class="form-control" required>
<option>Male</option>
<option >Female</option>
</select>
</div>
</div>
<br>
<div>
<textarea name="address" rows="4" cols="55" placeholder="Your Address" id="w3review" required></textarea>
</div>
<br>
<div>
<input name="pincode" type="number" class="form-control" placeholder="Pincode" required>
</div>
</div>
<br>
<hr>
<div class="modal-body">
<h4>Educational Info</h4>
</div>
<div class="container-fluid">
<div class="row">
<div class="col-6">
<select name="qualification" class="form-control" required>
<option selected disabled>Select Your Qualification</option>
<option>B.Tech</option>
<option >B.E</option>
</select>
</div>
<div class="col-6">
<select name="year" class="form-control" required>
<option selected disabled>Select Your Year</option>
<option>I</option>
<option >II</option>
<option>III</option>
<option >IV</option>
</select>
</div>
</div>
<br>
<div >
<select name="college_name" class="form-control" required>
<option selected disabled>Select Your College</option>
<option>ABCD College Of Engineering And Technology</option>
<option >XYZ College Of Engineering And Technology</option>
</select>
</div>
<br>
<div class="row">
<div class="col-6">
<select name="state" class="form-control" required>
<option selected disabled>Select Your State</option>
<option>Telangana</option>
<option >Kerala</option>
</select>
</div>
<div class="col-6">
<select name="country" class="form-control" required>
<option selected disabled>Select Your Country</option>
<option>India</option>
<option>United States</option>
</select>
</div>
</div>
<br>
<hr>
<center>
<button type="submit" class="submit-btn">Submit</button>
</center>
</div>
<br>
</form>
很抱歉分享整个代码。 我尝试了多种方法，但没有一个对我有用 有人请帮帮我 谢谢。
【问题讨论】：
标签： java html jsp web web-deployment