我想创建另一个名为public void execute（）的方法并运行preparedstmt.executebatch（）；但是我不知道怎么做。
public void save() {
FacesContext context = FacesContext.getCurrentInstance();
context.addMessage(null, new FacesMessage("Sacuvano nov proizvod sa sifrom: " + proizvodID + " Naziv proizvoda: " + naziv));
try {
String myDriver = "org.gjt.mm.mysql.Driver";
String myUrl = "jdbc:mysql://localhost/fpis";
Class.forName(myDriver);
Connection conn = DriverManager.getConnection(myUrl, "root", "root");
String query = " insert into proizvod values (?, ?, ?, ?, ?)";
PreparedStatement preparedStmt = conn.prepareStatement(query);
preparedStmt.setInt(1, proizvodID);
preparedStmt.setString(2, naziv);
preparedStmt.setString(3, opis);
preparedStmt.setDouble(4, cena);
preparedStmt.setString(5, jedMere);
preparedStmt.addBatch();
preparedStmt.executeBatch();
conn.close();
} catch (Exception e) {
System.err.println("Greska!");
System.err.println(e.getMessage());
}
}
public void execute(){
{
1条答案
按热度按时间qv7cva1a1#
你应该申报
PreparedStatement preparedStmt以及Connection conn作为类的属性。就像你可以设置的那样preparedStmt在public void save()以及conn在构造函数中。在那之后，就打电话preparedStmt.executeBatch();从public void execute();然后关闭conn之后。