SignupServlet
public class SignupServlet extends HttpServlet{
private static final long serialVersionUID = 1L;
private static final String DIR = "Nanyang Polytechnic/FYPJ Project2/FYPJ/WebContent/profile";
//private static final String SAVE_DIR="images";
// configuration to get Image file name
private String extractFileName(Part part){
String contentDisp = part.getHeader("content-disposition");
String[] items = contentDisp.split(";");
for (String s :items){
if(s.trim().startsWith("filename")){
return s.substring(s.indexOf("=")+2, s.length()-1);
}
}
return "";
}
/**
* @see HttpServlet#HttpServlet()
*/
public SignupServlet() {
super();
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
//configuration for declaring file saving path
//String relativeWebPath = "/profile";
//String savePath = getServletContext().getRealPath(relativeWebPath);
String savePath = "D:" + File.separator + DIR ;
File fileSaveDir=new File(savePath);
if(!fileSaveDir.exists()){
fileSaveDir.mkdir();
}
// Configuration to generate Random passsword
Random rand = new Random();
int num = rand.nextInt(900000) + 100000;
String Password = Integer.toString(num);
//End
String Name = request.getParameter("name");
String Email = request.getParameter("email");
String UserType = request.getParameter("usertype");
String strDOB = request.getParameter("dob");
String Gender = request.getParameter("gender");
String address = request.getParameter("address");
Part part = request.getPart("file");
String fileName = extractFileName(part);
String filePath = savePath + File.separator + fileName;
part.write(savePath + File.separator + fileName);
java.sql.Date d;
SimpleDateFormat sdf;
sdf = new SimpleDateFormat("yyyy-MM-dd");
java.util.Date d2 = null;
try{
d2 = sdf.parse(strDOB);
} catch (ParseException e1) {
e1.printStackTrace();
}
d = new java.sql.Date(d2.getTime());
DBAO dbao = null;
Login login = null;
//configuration for url for image
/*FileInputStream fis = new FileInputStream(filePath);
BufferedInputStream bis = new BufferedInputStream(fis);
BufferedOutputStream output = new BufferedOutputStream(response.getOutputStream());
for (int data; (data = bis.read()) > -1;){
output.write(data);
}
*/
try {
// configuration for email
Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
Properties props = System.getProperties();
String host = "smtp.gmail.com";
String port = "465";
String fromEmail = "lookeverybodysg@gmail.com";
String username = "lookeverybodysg";
String password = "catdog1234";
props.put("mail.smtp.user", fromEmail);
props.put("mail.smtp.host", host);
props.put("mail.smtp.starttls.enable","true");
props.put("mail.smtp.debug", "true");
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.port", port);
props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
props.put("mail.smtp.socketFactory.port", port);
props.put("mail.smtp.socketFactory.fallback", "false");
Session mailSession = Session.getDefaultInstance(props, new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication("lookeverybodysg", "catdog1234"); // username and password
}
});
mailSession.setDebug(true);
Message mailMessage = new MimeMessage(mailSession);
dbao = new DBAO();
if (dbao.emailExists(Email)){
request.setAttribute("Name", Name);
request.setAttribute("Email", Email);
request.setAttribute("UserType", UserType);
request.setAttribute("strDOB", strDOB);
request.setAttribute("Gender", Gender);
request.setAttribute("Pic", filePath);
request.setAttribute("Address", address);
response.setContentType("text/html");
out.println("<script type=\"text/javascript\">");
out.println("alert('The email you have used has already been regietered.');");
out.println("location='Login.jsp#signup';");
out.println("</script>");
return;
}else{
login = new Login();
login.setName(Name);
login.setEmail(Email);
login.setPassword(Password);
login.setUserType(UserType);
login.setDOB(d);
login.setGender(Gender);
login.setPic(filePath);
login.setAddress(address);
boolean isUserSaved = dbao.saveNewUser(login);
if (isUserSaved){
mailMessage.setFrom(new InternetAddress("lookeverybodysg@gmail.com"));
mailMessage.setRecipient(Message.RecipientType.TO, new InternetAddress(Email));
mailMessage.setSubject("Thank You for signing up to LookEveryBody!");
mailMessage.setContent("Email :" + Email + "<br> Password :" + Password, "text/html");
Transport transport = mailSession.getTransport("smtps");
transport.connect (host, 465, username, password);
transport.send(mailMessage);
response.setContentType("text/html");
out.println("<script type=\"text/javascript\">");
out.println("alert('Your accout has been successfully created, please go to your email to get your password.');");
out.println("location='Login.jsp';");
out.println("</script>");
return;
}
}
}catch(Exception e)
{
e.printStackTrace();
}
}
}
hairstylistprofile.jsp（显示图像页面代码）
<a class="image fit"><img src="<%=login.getPic() %>" alt="" /></a>
我无法在任何网络浏览器中查看我的图片（谷歌浏览器等等。但是，它可以在java浏览器中查看，任何帮助都会很棒。
答案 0 :(得分：1)
请检查login.getPic()返回的值。在我看来它包含像D:\path-to-your-image.ext这样的值。 login.getPic()应包含图片的有效网址，以使其显示在浏览器中。
如果将图像文件存储在Web应用程序路径之外，则可以创建一个读取图像文件并将其传输到响应输出的servlet。然后使用此servlet url作为html图像的源，如<img src="/picture/profile.jpg"/>。使用<c:url> taglib正确应用Web应用程序的上下文路径。
@WebServlet("/picture/*")
public class ProfilePictureServlet extends HttpServlet {
private static final String PICTURE_PATH = "D:/Pictures/";
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
String picture = req.getPathInfo().substring(1); // profile.jpg
BufferedImage bi = ImageIO.read(new File(PICTURE_PATH + picture));
OutputStream out = resp.getOutputStream();
resp.setContentType("image/jpg");
ImageIO.write(bi, "jpg", out);
out.close();
}
}