我应该用什么来代替stmt.executeUpdate（）？

-1

当我使用stmt.executeUpdate（），如果我用的executeQuery它不会返回记录我刚刚插入到数据库我没有设置coccurency和类型在创建语句对象我应该用什么来代替stmt.executeUpdate（）？

我的表是

create Table Customer(
Customer_ID int, 
Age int, 
Contact_No varchar(20), 
First_Name varchar(20), 
Last_Name varchar(20), 
PRIMARY KEY(Customer_ID) 
);

和

create Table Customer_Address(
Customer_ID int, 
Address_Line1 varchar(50), 
Address_Line2 varchar(50), 
City varchar(20), 
Pincode int, 
State varchar(25), 
PRIMARY KEY(Customer_ID,Address_Line1) 
);

我的Java代码：

try { 

    st = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_UPDATABLE); 
    st.executeUpdate("insert into Customer values(Default,"+age+",'"+contact_no+"','"+first+"','"+last+"')"); 

    ResultSet set = st.executeQuery("select Customer_ID from Customer where First_Name = '"+first+"' and Last_Name ='"+last+"' and contact_no ='"+contact_no+")"); 
    int id = set.getInt(1); 
    st.executeUpdate("insert into Customer_Address Values("+id+",'"+add1+"','"+add2+"','"+city+"',"+pincode+",'"+state+"')"); 
} 
catch (SQLException ex) { 
    Logger.getLogger(Screen1.class.getName()).log(Level.SEVERE, null, ex); 
}

来源

2016-09-22 Rahul D' Mello

你至少应该指定要插入的列。即插入到t_table（col1，col2）值（val1，val2）中 – Adam

您的插入值失常，并且与表定义不匹配。您将年龄插入First_Name ..... – Adam

对此问题的编辑是否真正反映了您的表格架构？我要离开 – Adam

如果你只是想插入行的ID，使用Statement.RETURN_GENERATED_KEYS像这样：

st.executeUpdate("INSERT INTO ...", Statement.RETURN_GENERATED_KEYS); 
int id; 
try (ResultSet rs = st.getGeneratedKeys()) { 
    rs.next(); 
    id = rs.getInt(1); 
} 

// ...

来源

2016-09-22 10:45:59 megaflop

DAMN非常感谢：DDDD –

更换

ResultSet set = st.executeQuery("select Customer_ID from Customer where First_Name = '"+first+"' and last ='"+last+"' and contact_no ='"+contact_no+")"); 

ResultSet set = st.executeQuery("select Customer_ID from Customer where First_Name = '"+first+"' and last ='"+last+"' and contact_no ='"+contact_no+"')");

来源

2016-09-22 10:41:12 Adam

我应该用什么来代替stmt.executeUpdate（）？

回答

相关问题