eclipse连接oracle 11g数据库图文教程
Eclipse 是一个开放源代码的、基于Java的可扩展开发平台。Eclipse 附带了一个标准的插件集，包括Java开发工具(Java Development Kit，JDK)。 1.首先先建立一个项目DB，右键点击DB,选择Build Path--Configure Build Path进入 通过Add External JARs..选择D:or
Eclipse 是一个开放源代码的、基于Java的可扩展开发平台。Eclipse 附带了一个标准的插件集，，包括Java开发工具(Java Development Kit，JDK)。
1.首先先建立一个项目DB，右键点击DB,选择Build Path-->Configure Build Path进入
通过Add External JARs..选择D:orclapphrproduct11.2.0dbhome_1owbwflib下的ojdbc14.jar，点击ok。
2.编写ConnectOracle.java文件
package com.wuy;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class ConnectOracle {
private Connection con;
private String user="scott";
//private String user = "sys as sysdba";
private String password="18233188050";
private String className="oracle.jdbc.driver.OracleDriver";
//private String url="jdbc:oracle:oci@localhost:1158:orcl";这个url可能无效
private String url = "jdbc:oracle:thin:@hr-PC:1521:orcl";hr-PC和1521很关键,也就是侦听串里有没有这个，在
D:orclapphrproduct11.2.0dbhome_1NETWORKADMINtnsnames.ora这个文件里有没有，一定要根据tnsnames.ora这个文件来配置url路径，否则会出错!!!
public ConnectOracle(){
try{
Class.forName(className);
System.out.println("加载数据库驱动成功!");
}catch(ClassNotFoundException e){
System.out.println("加载数据库驱动失败!");
e.printStackTrace();
}
}
/**创建数据库连接*/
public Connection getCon(){
try {
con=DriverManager.getConnection(url,user,password);
System.out.println("创建数据库连接成功!");
} catch (SQLException e) {
System.out.print(con);
System.out.println("创建数据库连接失败!");
con=null;
e.printStackTrace();
}
return con;
}
public void closed(){
try{
if(con!=null){
con.close();
}
}catch(SQLException e){
System.out.println("关闭con对象失败!");
e.printStackTrace();
}
}
public static void main(String[] args)
{
ConnectOracle c=new ConnectOracle();
c.getCon();
c.closed();
}
}
3.运行结果：
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1655
14
1414
52
1307
25
1254
29
1228
24
MySQL: An Introduction to the World's Most Popular Database
Apr 12, 2025 am 12:18 AM
MySQL is an open source relational database management system, mainly used to store and retrieve data quickly and reliably. Its working principle includes client requests, query resolution, execution of queries and return results. Examples of usage include creating tables, inserting and querying data, and advanced features such as JOIN operations. Common errors involve SQL syntax, data types, and permissions, and optimization suggestions include the use of indexes, optimized queries, and partitioning of tables.
How to solve the problem of closing oracle cursor
Apr 11, 2025 pm 10:18 PM
The method to solve the Oracle cursor closure problem includes: explicitly closing the cursor using the CLOSE statement. Declare the cursor in the FOR UPDATE clause so that it automatically closes after the scope is ended. Declare the cursor in the USING clause so that it automatically closes when the associated PL/SQL variable is closed. Use exception handling to ensure that the cursor is closed in any exception situation. Use the connection pool to automatically close the cursor. Disable automatic submission and delay cursor closing.
Why Use MySQL? Benefits and Advantages
Apr 12, 2025 am 12:17 AM
MySQL is chosen for its performance, reliability, ease of use, and community support. 1.MySQL provides efficient data storage and retrieval functions, supporting multiple data types and advanced query operations. 2. Adopt client-server architecture and multiple storage engines to support transaction and query optimization. 3. Easy to use, supports a variety of operating systems and programming languages. 4. Have strong community support and provide rich resources and solutions.
How to create cursors in oracle loop
Apr 12, 2025 am 06:18 AM
In Oracle, the FOR LOOP loop can create cursors dynamically. The steps are: 1. Define the cursor type; 2. Create the loop; 3. Create the cursor dynamically; 4. Execute the cursor; 5. Close the cursor. Example: A cursor can be created cycle-by-circuit to display the names and salaries of the top 10 employees.
What steps are required to configure CentOS in HDFS
Apr 14, 2025 pm 06:42 PM
Building a Hadoop Distributed File System (HDFS) on a CentOS system requires multiple steps. This article provides a brief configuration guide. 1. Prepare to install JDK in the early stage: Install JavaDevelopmentKit (JDK) on all nodes, and the version must be compatible with Hadoop. The installation package can be downloaded from the Oracle official website. Environment variable configuration: Edit /etc/profile file, set Java and Hadoop environment variables, so that the system can find the installation path of JDK and Hadoop. 2. Security configuration: SSH password-free login to generate SSH key: Use the ssh-keygen command on each node
Oracle's Role in the Business World
Apr 23, 2025 am 12:01 AM
Oracle is not only a database company, but also a leader in cloud computing and ERP systems. 1. Oracle provides comprehensive solutions from database to cloud services and ERP systems. 2. OracleCloud challenges AWS and Azure, providing IaaS, PaaS and SaaS services. 3. Oracle's ERP systems such as E-BusinessSuite and FusionApplications help enterprises optimize operations.
What to do if the oracle log is full
Apr 12, 2025 am 06:09 AM
When Oracle log files are full, the following solutions can be adopted: 1) Clean old log files; 2) Increase the log file size; 3) Increase the log file group; 4) Set up automatic log management; 5) Reinitialize the database. Before implementing any solution, it is recommended to back up the database to prevent data loss.
How to stop oracle database
Apr 12, 2025 am 06:12 AM
To stop an Oracle database, perform the following steps: 1. Connect to the database; 2. Shutdown immediately; 3. Shutdown abort completely.
