Question

我是java和netbeans的初学者。请给我完整的程序如何将我的java应用程序连接到mysql以插入数据。

Answer 1

从以下链接http://sqlworkbench.mgm-tp.com/viewvc/trunk/sqlworkbench/junit/mysql-connector-java-5.1.13-bin.jar?revision=2294&pathrev=2294下载“mysql-connector-java-5.1.13-bin.jar”

以下是连接到mysql数据库并从表中检索数据的示例Java代码。

在下面的代码中，数据库名称是“databaseName”

和表名是“userTable”

别忘了将“mysql-connector-java-5.1.13-bin.jar”添加到netbeans项目的库中。

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;

public class NewClass {

public static void main(String[] args) {


    Connection conn = null;

    String url = "jdbc:mysql://127.0.0.1:3306/";
    String dbName = "databaseName";
    Statement stmt = null;
    ResultSet result = null;
    String driver = "com.mysql.jdbc.Driver";
    String databaseUserName = "root";   //user name to connect to database(plz change it with your mysql username)
    String databasePassword = "root";   //password to connect to database(plz change it with your mysql password)
    try {
        Class.forName(driver).newInstance();
        conn = DriverManager.getConnection(url + dbName, databaseUserName, databasePassword);
        stmt = conn.createStatement();
        result = null;
        String password,username;
        result = stmt.executeQuery("select * from userTable ");
        if(!result.isBeforeFirst()){
            System.out.println("resultset contin no rows");
        }else{ // result set contain some data.... ie.. table contain some rows
            // process data
        }

        conn.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}
}

Answer 2

Netbeans的知识库文章，描述how to connect to a mysql database。

将java应用程序连接到netbeans 6.8中的mysql服务器

2 个答案: