Question

我正在尝试通过以下方式对数据库进行插入：

package org.gradle.demo;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;

@WebServlet(name = "HelloServlet", urlPatterns = {"register"}, loadOnStartup = 1)
public class RegisterServlet extends HttpServlet {
    private Connection conn;

    protected void doPost(HttpServletRequest request, HttpServletResponse response ) throws ServletException, IOException {
        String username = request.getParameter("username");
        String password = request.getParameter("password");

        try {
            conn = DBUtils.initializeSqlConnection();
            Statement statement = conn.createStatement();
            int count = statement.executeUpdate("INSERT INTO users (username, pass) VALUES ('" + username + "', '" + password + "')");
            System.out.println(count);
        } catch (SQLException e) {
            System.err.println("SQL Exception trying to insert new user");
            System.err.println(e.getMessage());
        }
        request.setAttribute("username", username);
        request.getRequestDispatcher("loginsucces.jsp").forward(request, response);
    }
}

我正在使用具有这种依赖关系的Gradle：

dependencies {
    providedCompile group: 'javax.servlet', name: 'javax.servlet-api', version: '3.1.0'
    compile group: 'org.postgresql', name: 'postgresql', version: '42.2.2'

    testCompile group: 'junit', name: 'junit', version: '4.12'
    testCompile group: 'org.mockito', name: 'mockito-core', version: '2.19.0'
    testCompile group: 'io.github.bonigarcia', name: 'webdrivermanager', version: '2.2.3'
    testCompile group: 'org.seleniumhq.selenium', name: 'selenium-java', version: '3.13.0'
}

我也已经在另一个执行SELECT的类中测试了我的连接，它可以完美连接，但是一旦我尝试进行INSERT，它就会抛出：

No suitable driver found for jdbc:postgresql://localhost/training_log

PostgreSQL-找不到适合JDBC的驱动程序

0 个答案: