dbutils入门
DButils隶属于apache commons,对于一些基本的jdbc操作进行了封装,比之orm要小巧不小,当然功能上弱化很多。
简单demo看看dbutils使用(增删改查):
- public class DB {
 - private String dirverClassName = "com.mysql.jdbc.Driver";
 - private String url = "jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=utf8";
 - private String user = "root";
 - private String password = "admin";
 - static Connection conn = null;
 - QueryRunner runner = null;
 - private void getConnection() {
 - try {
 - Class.forName(dirverClassName);
 - } catch (ClassNotFoundException e) {
 - e.printStackTrace();
 - }
 - try {
 - conn = DriverManager.getConnection(url, user, password);
 - runner = new QueryRunner();
 - } catch (SQLException e) {
 - e.printStackTrace();
 - }
 - }
 - private void insert() throws SQLException {
 - int n = runner.update(conn, "insert into aaa(term) values('你大爷')");
 - System.out.println("插入" + n + "条数据!");
 - }
 - private void find() throws SQLException {
 - List<Word> list = (List<Word>) runner.query(conn,
 - "select id,term from aaa", new BeanListHandler(Word.class));
 - for (Word user : list) {
 - System.out.println(user);
 - }
 - }
 - private void delete() throws Exception {
 - runner.update(conn, "delete from aaa where id = ?", 10);
 - }
 - public void test() throws Exception {
 - getConnection();
 - // insert();
 - find();
 - DbUtils.closeQuietly(conn);
 - }
 - public static void main(String[] args) throws Exception {
 - DB db = new DB();
 - db.test();
 - }
 - }
 
public class DB {
private String dirverClassName = "com.mysql.jdbc.Driver";
private String url ="jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=utf8";
private String user = "root";
private String password = "admin";
static Connection conn = null;
QueryRunner runner = null;
private void getConnection() {
try {
Class.forName(dirverClassName);
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
try {
conn = DriverManager.getConnection(url, user, password);
runner = new QueryRunner();
} catch (SQLException e) {
e.printStackTrace();
}
}
private void insert() throws SQLException {
int n = runner.update(conn, "insert into aaa(term) values('你大爷')");
System.out.println("插入" + n + "条数据!");
}
private void find() throws SQLException {
List<Word> list = (List<Word>) runner.query(conn,
"select id,term from aaa", new BeanListHandler(Word.class));
for (Word user : list) {
System.out.println(user);
}
}
private void delete() throws Exception {
runner.update(conn, "delete from aaa where id = ?", 10);
}
public void test() throws Exception {
getConnection();
// insert();
find();
DbUtils.closeQuietly(conn);
}
public static void main(String[] args) throws Exception {
DB db = new DB();
db.test();
}
}
aaa表结构:
- DROP TABLE IF EXISTS `test`.`aaa`;
 - CREATE TABLE `test`.`aaa` (
 - `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
 - `term` text NOT NULL,
 - PRIMARY KEY (`id`)
 - ) ENGINE=InnoDB AUTO_INCREMENT=47 DEFAULT CHARSET=utf8;
 
DROP TABLE IF EXISTS`test`.`aaa`;
CREATE TABLE `test`.`aaa` (
`id` int(10) unsigned NOT NULLAUTO_INCREMENT,
`term` text NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDBAUTO_INCREMENT=47 DEFAULT CHARSET=utf8;
除dbutils.jar外还需要mysql-java的驱动包。
                    
                
                
            
        
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