Java---JDBC连接MYSQL数据库
这里做了一个JDBC连接MYSQL数据库的例子，其实JDBC代码基本上写了一次就不会变了，但是大家一定要把要变的驱动分离出来，这里我写死了，有兴趣可以看看！代码如下：
package com.jdbc;import java.sql.Connection;import java.sql.DriverManager;import java.sql.PreparedStatement;import java.sql.ResultSet;/** * JDBC实现MYSQL数据库连接,防止了SQL注入 * @author Administrator * */public class JDBCExample {public JDBCExample(){try {this.setConnection();} catch (Exception e) {e.printStackTrace();}}private static final String CLASS = "org.gjt.mm.mysql.Driver";//驱动类private static final String DRIVER = "jdbc:mysql://localhost:3306/test"; //驱动private static final String USERNAME = "root"; //数据库用户名private static final String PWD = "";//数据库密码private Connection conn = null;private PreparedStatement ps = null;private ResultSet rs = null;/** * 获取连接对象 * @return * @throws Exception*/public Connection setConnection() throws Exception{Class.forName(CLASS);conn = DriverManager.getConnection(DRIVER,USERNAME,PWD);return conn;}/** * 查询操作(一般项目不是返回ResultSet，一般返回集合或对象) * @param sql * @param pare * @return * @throws Exception*/public ResultSet query(String sql,Object[] pare) throws Exception{ps = conn.prepareStatement(sql);//设置参数for(int i = 0; i<pare.length; i++){ps.setObject(i+1, pare);}rs = ps.executeQuery();return rs;}/** * 增删改操作 * @param sql * @param pare * @return * @throws Exception*/public int edit(String sql,Object[] pare) throws Exception{int hasEffect = 0;//影响行数ps = conn.prepareStatement(sql);//设置参数for(int i = 0; i<pare.length; i++){ps.setObject(i+1, pare);}hasEffect = ps.executeUpdate();return hasEffect;}/** * 关闭所有对象 * @throws Exception */public void closeAll() throws Exception{if(rs != null){rs.close();}if(ps != null){ps.close();}if(conn != null){conn.close();}}/** * 测试 * @param args */public static void main(String[] args) {JDBCExample test = new JDBCExample();}}
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