在mysql中获取最后插入的自动增量ID

Question

我试图获取mysql命令,如mysql_insert_id(); 它检索最后插入的行的auto_increment id.我能用Java做些什么呢？

rs = st.executeQuery("select last_insert_id() from schedule");
lastid = rs.getString("last_insert_id()");

我的lastid被宣布为INT.我不想在rs.get中使用什么以及参数..

Answer 1

使用JDBC,您可以使用Connection.PreparedStatement(query,int)方法.

PreparedStatement pstmt = conn.prepareStatement(Query, Statement.RETURN_GENERATED_KEYS);  
pstmt.executeUpdate();  
ResultSet keys = pstmt.getGeneratedKeys();    
keys.next();  
key = keys.getInt(1);

Answer 2

尝试使用别名

rs = st.executeQuery("select last_insert_id() as last_id from schedule");
lastid = rs.getString("last_id");

Answer 3

看到这篇文章的答案和解释

Statement stmt = db.prepareStatement(query, Statement.RETURN_GENERATED_KEYS);
numero = stmt.executeUpdate();

ResultSet rs = stmt.getGeneratedKeys();
if (rs.next()){
    risultato=rs.getInt(1);
}