我正在尝试使用Eclipse与tomcat 9.0在servlet ..中创建一个注册页面，单击提交按钮后它将返回空白页面。进入地址栏，我有http://localhost:8080/CamerShop/Inscrption（Servlet名称），我已经尝试了可用的步骤，但是没有走..请帮助...
我尝试了另一个数据库。没有好结果
inscription.jsp
<!-- row -->
<div class="row">
<form method="Post" action="Inscription" id="checkout-form"
class="clearfix">
<div class="col-md-6">
<div class="billing-details">
<p>
Êtes vous client ? <a href="localhost:8080/CamerShop/login">Connexion</a>
</p>
<div class="section-title">
<h3 class="title">Entrez Vos Informations</h3>
</div>
<div class="form-group">
<input class="input" type="text" name="nom"
placeholder="Entrez votre nom...">
</div>
<div class="form-group">
<input class="input" type="text" name="login"
placeholder="Entrez votre login...">
</div>
<div class="form-group">
<input class="input" type="password" name="password"
placeholder="Entrez votre mot de passe...">
</div>
<div class="form-group">
<input class="input" type="email" name="email"
placeholder="Entrez votre email...">
</div>
<div class="form-group">
<input class="input" type="tel" name="telephone"
placeholder="Telephone">
</div>
<div class="form-group">
<input class="input" type="text" name="ville"
placeholder="Ville">
</div>
<div class="form-group">
<input class="input" type="text" name="photo"
placeholder="Photo de profil">
</div>
<div class="form-group">
<button type="submit" class="btn btn-light" name="AddUser">Enregistrer</button>
</div>
</div>
</div>
</form>
</div>
<!-- /row -->
Inscription.java（servlet）
package controleur;
import java.io.IOException;
import java.sql.DriverManager;
import java.sql.SQLException;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.mysql.jdbc.Connection;
import com.mysql.jdbc.PreparedStatement;
import modele.ConnexionDb;
/**
* Servlet implementation class InscriptionServlet
*/
public class InscriptionServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
* response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// TODO Auto-generated method stub
super.doGet(request, response);
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
* response)
*/
public void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
System.out.println("Tentative de recuperation Recuperation des données du formulaire");
String nom = req.getParameter("nom");
String login = req.getParameter("login");
String password = req.getParameter("password");
String email = req.getParameter("email");
int telephone = Integer.parseInt(req.getParameter("telephone"));
String ville = req.getParameter("ville");
String profil = "client";
String photo = req.getParameter("photo");
System.out.println(nom + " " + login + " " + email);
try {
ConnexionDb db=new ConnexionDb();
db.getConnection();
Connection conx = ConnexionDb.getConnection();
PreparedStatement pr = (PreparedStatement) conx.prepareStatement(
"INSERT INTO `utilisateur` (idUser, nom, login, password, email, telephone, ville, profil, photo) VALUES (default,?,?,?,?,?,?,?,?)");
pr.setString(1, nom);
pr.setString(2, login);
pr.setString(3, password);
pr.setString(4, email);
pr.setInt(5, telephone);
pr.setString(6, ville);
pr.setString(7, profil);
pr.setString(8, photo);
pr.executeUpdate();
pr.close();
resp.sendRedirect("login");
} catch (Exception e) {
// TODO Auto-generated catch block
System.out.println("Insertion impossible en bd "+ e);
}
}
}
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd" id="WebApp_ID" version="4.0">
<display-name>CamerShop</display-name>
<servlet>
<servlet-name>InscriptionServlet</servlet-name>
<servlet-class>controleur.InscriptionServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>InscriptionServlet</servlet-name>
<url-pattern>/Inscription</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>LoginServlet</servlet-name>
<servlet-class>controleur.LoginServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>LoginServlet</servlet-name>
<url-pattern>/login</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>AccueilServlet</servlet-name>
<servlet-class>controleur.AccueilServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>AccueilServlet</servlet-name>
<url-pattern>/Accueil</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
ConnexionDb
package modele;
import java.sql.DriverManager;
import java.sql.SQLException;
import com.mysql.jdbc.Connection;
public class ConnexionDb {
private static String url = "jdbc:mysql://localhost/camershop";
private static String driverName = "com.mysql.jdbc.Driver";
private static String username = "root";
private static String password = "";
private static Connection con;
public static Connection getConnection() {
try {
Class.forName(driverName);
try {
con = (Connection) DriverManager.getConnection(url, username, password);
} catch (SQLException ex) {
// log an exception. fro example:
ex.printStackTrace();
System.out.println("Erreur lors de la connexion à la base de donnée.");
}
} catch (ClassNotFoundException ex) {
ex.printStackTrace();
// log an exception. for example:
System.out.println("Driver SQL Non trouvé.");
}
return con;
}
}
单击提交按钮后，我有空白页（http://localhost:8080/CamerShop/Insription），并且数据没有插入数据库。
答案 0 :(得分：0)
在准备好的语句中动态设置参数，如下所示：
PreparedStatement pr = (PreparedStatement) conx.prepareStatement(
"INSERT INTO `utilisateur` (idUser, nom, login, password, email, telephone, ville, profil, photo) VALUES (?,?,?,?,?,?,?,?,?)");
pr.setString(1,"default");
pr.setString(2, nom);
pr.setString(3, login);
pr.setString(4, password);
pr.setString(5, email);
pr.setInt(6, telephone);
pr.setString(7, ville);
pr.setString(8, profil);
pr.setString(9, photo);
pr.executeUpdate();
pr.close();
resp.sendRedirect("login");