java jdbc preparestatement_JAVA JDBC prepareStatement 添加数据

我们使用prepareStatement来操作数据库,可以防止sql注入,并且无需拼接sql语句.

核心代码:

String sql = "insert into customers(name,email,birth)values(?,?,?)";

ps = connection.prepareStatement(sql);

ps.setString(1,"哪吒");

ps.setString(2,"[email protected]");

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

Date date = sdf.parse("1000-01-01");

ps.setDate(3, new java.sql.Date(date.getTime()));

ps.execute();

完整代码

InputStream is = connectTest.class.getClassLoader().getResourceAsStream("jdbcInfo.properties");

Properties pro = new Properties();

pro.load(is);

String user = pro.getProperty("user");

String password = pro.getProperty("password");

String url = pro.getProperty("url");

String driverClass = pro.getProperty("driverClass");

//利用反射

Connection connection = null;

PreparedStatement ps = null;

try {

Class.forName(driverClass);

connection = DriverManager.getConnection(url,user,password);

System.out.println(connection);

String sql = "insert into customers(name,email,birth)values(?,?,?)";

ps = connection.prepareStatement(sql);

ps.setString(1,"哪吒");

ps.setString(2,"[email protected]");

SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

Date date = sdf.parse("1000-01-01");

ps.setDate(3, new java.sql.Date(date.getTime()));

ps.execute();

} catch (ClassNotFoundException e) {

e.printStackTrace();

} catch (SQLException e) {

e.printStackTrace();

} catch (ParseException e) {

e.printStackTrace();

} finally {

if(ps!=null)

try {

ps.close();

} catch (SQLException e) {

e.printStackTrace();

}

if(connection!=null)

try {

connection.close();

} catch (SQLException e) {

e.printStackTrace();

}

}

View Code

标签：ps,JDBC,JAVA,String,prepareStatement,pro,connection,sql,new

来源： https://www.cnblogs.com/superxuezhazha/p/12395673.html