UC知道myeclipse下连接Mysql的问题
来源：百度知道 编辑：UC知道 时间：2024/06/06 09:09:17
已经在工程中导入了mysql-connector-java-5.0.8-bin.jar,创建了连接文件如下：package y2;
import java.io.File;
import java.io.FileInputStream;
import java.net.URI;
import java.sql.*;
import java.util.PropertyResourceBundle;
public class MySqlConnector {
private static final String CON_NAME = "userName";
private static final String CON_PASS = "password";
private static final String CON_DNAME = "databaseName";
private Connection connection = null;
private MySqlConnector() {
}
public static MySqlConnector getInstance() {
return new MySqlConnector();
}
private boolean dataInit() {
boolean isOK = false;
String userName = "";
String password = "";
String databaseName = "";
PropertyResourceBundle rBoundle = null;
try {
String conPath = MySqlConnector.class.getResource("/
import java.io.File;
import java.io.FileInputStream;
import java.net.URI;
import java.sql.*;
import java.util.PropertyResourceBundle;
public class MySqlConnector {
private static final String CON_NAME = "userName";
private static final String CON_PASS = "password";
private static final String CON_DNAME = "databaseName";
private Connection connection = null;
private MySqlConnector() {
}
public static MySqlConnector getInstance() {
return new MySqlConnector();
}
private boolean dataInit() {
boolean isOK = false;
String userName = "";
String password = "";
String databaseName = "";
PropertyResourceBundle rBoundle = null;
try {
String conPath = MySqlConnector.class.getResource("/
报的什么错误？发一下
=====================
connection未被定义。
需要new一下connection这个对象。如下
把你出错那句化成我这两句。
MySqlConnector msc = new MySqlConnector();
connection = msc.getConnection();
======================
或者这么写也行
connection=MySqlConnector.getInstance().getConnection();