0
这一直让我发疯,我相信这很简单。当我尝试从出现的表格输入保留时,我收到了一个'值必须包含至少一个元素'的错误。这一切都运行良好。无论是在VALUES部分中使用引号,还是在分隔逗号中加上(+)符号或引号,都会得到不同的错误消息。当我把报价放在table_num上时,我得到了错误,并告诉我你不能将CHAR插入到INTEGER中。当我删除引号时,我得到的错误告诉我 - 严重:java.sql.SQLSyntaxErrorException:列'TABLE_NUM'或者不在FROM列表中的任何表中,或者出现在联接规范中等等。谁能告诉我发生了什么?这是jsp代码。提前致谢。在数据库中插入预约
<%
int tableNum = 0;
String firstName = null;
String lastName = null;
String Address = null;
int Phone = 0;
java.sql.Date date = null;
int People = 0;
if (request.getParameter("table_num")!=null){
tableNum = Integer.parseInt(request.getParameter("table_num"));
}
if (request.getParameter("first")!=null){
firstName = request.getParameter("first");
}
if (request.getParameter("last")!=null){
lastName = request.getParameter("last");
}
if (request.getParameter("address")!=null){
Address = request.getParameter("address");
}
if (request.getParameter("phone")!=null){
Phone = Integer.parseInt(request.getParameter("phone"));
}
if (request.getParameter("date")!=null){
java.util.Date utilDate = new java.util.Date(request.getParameter("date"));
date = new java.sql.Date(utilDate.getTime());
}
if (request.getParameter("people")!=null){
People = Integer.parseInt(request.getParameter("people"));
}
if(tableNum != 0 && firstName != null && lastName != null && Address != null && Phone != 0 && date != null && People != 0){
String URL = "jdbc:derby://localhost:1527/Reservations";
String USERNAME= "johnpaul";
String PASSWORD= "purlease";
Connection myCon = null;
Statement ste = null;
PreparedStatement preparedStmt = null;
try{
Class.forName("org.apache.derby.jdbc.ClientDriver");
System.out.println("Connecting to DB...");
Connection con=DriverManager.getConnection("jdbc:derby://localhost:1527/Reservations","johnpaul", "purlease");
System.out.println("Connected successfuly");
System.out.println("Inserting records into table");
Statement st = con.createStatement();
String query = "INSERT INTO JOHNPAUL.CUSTOMER_RESERVATIONS(TABLE_NUM,FIRST_NAME,LAST_NAME,ADDRESS,TELEPHONE,DATE,NUMBER_IN_PARTY)VALUES(table_num,first,last,address,phone,date,people)";
st.executeUpdate (query);
System.out.println("Records inserted");
}catch(SQLException se){
se.printStackTrace();
}catch(ClassNotFoundException se){
//Handle errors for JDBC
se.printStackTrace();
}catch(Exception e){
//Handle errors for Class.forName
e.printStackTrace();
}
}
%>
谢谢李。我把它整理好了。现在只是有日期问题。当我删除jsp代码中的所有文件时,所有工作都很好,并且记录被插入到数据库中。 Bur获取错误信息告诉我 - ''DATE'类型的列在离开所有日期编码时不能保存'INTEGER'类型的值。 –