我已经上传了文件夹到服务器文件夹，所以现在我想将文件路径和文件名存储到Mysql数据库中，并将数据库中存储的文件以树形结构的方式显示到前端。
这是代码请帮助
page.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@ page language="java" %>
<%@page import="java.io.*,java.net.*"%>
<HTML>
<FORM ENCTYPE="multipart/form-data" ACTION="uploadandstore.jsp" METHOD=POST>
<center>
<table border="0" bgcolor=#ccFDDEE>
<tr>
<center><td colspan="2" align="center"><B>UPLOAD THE FILE</B><center></td>
</tr>
<br><br><br>
<tr><td colspan="" align="center"> </td></tr>
<tr><td><b>Choose the file</b></td>
<td><INPUT NAME="file" TYPE="file"></td>
</tr>
<tr><td colspan="2" align="center"> </td></tr>
<tr><td colspan="2" align="center"><input type="submit" value="Submit"> </td></tr>
<table>
</center>
</FORM>
</HTML>uploadandstore.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@page import="java.io.*, java.sql.*"%>
<%
String saveFile="";
String contentType = request.getContentType();
if ((contentType != null) && (contentType.indexOf("multipart/form-data") >= 0)) {
DataInputStream in = new DataInputStream(request.getInputStream());
int formDataLength = request.getContentLength();
byte dataBytes[] = new byte[formDataLength];
int byteRead = 0;
int totalBytesRead = 0;
while (totalBytesRead < formDataLength) {
byteRead = in.read(dataBytes, totalBytesRead,formDataLength);
totalBytesRead += byteRead;
}
String file = new String(dataBytes);
saveFile = file.substring(file.indexOf("filename=\"") + 10);
saveFile = saveFile.substring(0, saveFile.indexOf("\n"));
saveFile = saveFile.substring(saveFile.lastIndexOf("\\") + 1,saveFile.indexOf("\""));
int lastIndex = contentType.lastIndexOf("=");
String boundary = contentType.substring(lastIndex + 1,contentType.length());
int pos;
pos = file.indexOf("filename=\"");
pos = file.indexOf("\n", pos) + 1;
pos = file.indexOf("\n", pos) + 1;
pos = file.indexOf("\n", pos) + 1;
int boundaryLocation = file.indexOf(boundary, pos) - 4;
int startPos = ((file.substring(0, pos)).getBytes()).length;
int endPos = ((file.substring(0, boundaryLocation)).getBytes()).length;
saveFile="C:/UploadedFiles/"+saveFile;
File f = new File(saveFile);
FileOutputStream fileOut = new FileOutputStream(f);
fileOut.write(dataBytes, startPos, (endPos - startPos));
fileOut.flush();
fileOut.close();
%>
<%
}
%>
<a href="viewFiles.jsp">View Files</a>viewFiles.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@ page import="java.io.*"%>
<html>
<table>
<%
File f = new File("C:/UploadedFiles/");
File[] files = f.listFiles();
for(int i=0;i<files.length;i++){
String name=files[i].getName();
String path=files[i].getPath();
%>
<tr><td><%=name%></td><td><a href="download.jsp?f=<%=path%>">Download</a></td></tr>
<%
}
%>
</table>
</html>download.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@page import="java.io.*,java.net.*"%>
<%!
public static String getMimeType(String fileUrl)
throws java.io.IOException, MalformedURLException
{
String type = null;
URL u = new URL(fileUrl);
URLConnection uc = null;
uc = u.openConnection();
type = uc.getContentType();
return type;
}
%>
<%
String file=request.getParameter("f");
File f = new File (file);
String filename=f.getName();
String type=getMimeType("file:"+file);
response.setContentType (type);
response.setHeader ("Content-Disposition", "attachment; filename=\""+filename+"\"");
String name = f.getName().substring(f.getName().lastIndexOf("/") ,f.getName().length());
InputStream in = new FileInputStream(f);
ServletOutputStream outs = response.getOutputStream();
int bit = 256;
int i = 0;
try {
while ((bit) >= 0) {
bit = in.read();
outs.write(bit);
}
} catch (IOException ioe) {
ioe.printStackTrace(System.out);
}
outs.flush();
outs.close();
in.close();
%>最佳答案
好的，根据评论
String filePath=f.getAbsolutePath(); // this will get the file path
try(Connection conn=getDBConnection();// here it will open a DB connection
PreparedStatement peparedState=conn.preparStatement("INSERT INTO PATHS SET path=?")// Query
peparedState.setString(1,filePath); // setting the variable corresponding to '?'
preparedState.executeUpdate()); // executeQuery
关于mysql - 如何使用jsp servlet代码将文件路径和文件名存储到数据库(mysql)中？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/43387261/