Question

我尝试阅读很多主题，但我没有找到答案。 Plz，一些有光泽的灵魂可以帮助我吗？

代码只有3个文件，使用jsp进行非常简单的查询。

NetBeans 8.1
Maven Web应用程序
Java EE 7 WEB
GlassFish 4.1.1
来源/二进制1.8

的index.html

<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>Exercício 01 JDBC</title>
    </head>
    <body>
        <h1>Listagem de Usuário:</h1>
        <FORM METHOD="POST" ACTION="App">
            <P> Clique em <INPUT TYPE="SUBMIT" VALUE="LISTAR"> 
                para obter a relação do nome do primeiro usuário.</p>
        </FORM>
    </body>
</html>

App.java

package br.com.yonathan.faculdades.jdbc;

import java.io.IOException;
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.sql.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletConfig;

@WebServlet(name = "App", urlPatterns = {"/App"})
public class App extends HttpServlet {

    private Connection con;

    @Override
    public void init(ServletConfig config) throws ServletException {
        super.init(config);
        final String url = "jdbc:oracle:thin:@yyy.inf.poa.ifrs.edu.br:1521:XE";
        final String us = "xxx";
        try {
            Class.forName("oracle.jdbc.OracleDriver");
        } catch (ClassNotFoundException ex) {
            Logger.getLogger(App.class.getName()).log(Level.SEVERE, null, ex);
        }

        try {
            con = DriverManager.getConnection(url, us, us);
        } catch (SQLException ex) {
            throw new ServletException(ex);
        }
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        String sql = "SELECT nome FROM JDBC_USUARIO where ROWNUM = 1";
        String saida = "";
        try (PreparedStatement stm = con.prepareStatement(sql);
                ResultSet rs = stm.executeQuery()) {

            while (rs.next()) {

                saida = rs.getString(1);

            }
            rs.close();
        } catch (SQLException ex) {
            Logger.getLogger(App.class.getName()).log(Level.SEVERE, null, ex);
        }

        request.setAttribute("resultado", saida);

        response.setContentType("text/html;charset=UTF-8");
        request.getRequestDispatcher("resposta.jsp").forward(request, response);
    }

}

resposta.jsp

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>Servlet Exibe Resultado</title>
    </head>
    <body>
        <h1>JDBC Connection</h1>
        <h2>Primeiro nome cadastrado:</h2>
        ${resultado}.
    </body>
</html>

用户和passwd是相同的。在发布之前我真的试着修复。

Answer 1

在oracle安装中查找WebElement element = driver.findElement(By.id("id")); Actions actions = new Actions(driver); actions.moveToElement(element); actions.perform();或ojdbc6.jar，并将该文件放入ojdbc7.jar。然后重启tomcat并再试一次。

Answer 2

在文件＆＃34; pom.xml ＆＃34;进入项目文件，我不得不添加：

<dependencies>
    <dependency>
        <groupId>com.oracle</groupId>
        <artifactId>ojdbc6</artifactId>
        <version>11.2.0.3</version>
    </dependency>
</dependencies>

和

<repositories>
    <repository>
        <id>codelds</id>
        <url>https://code.lds.org/nexus/content/groups/main-repo</url>
    </repository>
</repositories>

它有效。我不知道为什么从一开始就不起作用。这是一个Maven项目，但我必须手动包含＆＃34;＃34;这个东西，然后当我点击运行他下载缺少的驱动程序，似乎工作到现在为止。谢谢你们！

HTTP 500 - java.sql.SQLException：没有为jdbc找到合适的驱动程序：oracle：thin：@

2 个答案: