忙活两天了一点头绪也没有`来帮帮忙`
日期：2014-05-18 浏览次数：20653 次
忙活两天了一点头绪也没有```高手进来帮帮忙``
为什么这个程序会报这样的错语
cannot is issue data manipulation statements with executeQuery();请问什么原因哦``
package beans;
import java.sql.*;
public class connDB {
Connection conn=null;
Statement stmt =null;
ResultSet rs=null;
public connDB()
{
try {
Class.forName( "com.mysql.jdbc.Driver ");
} catch (Exception e) {
// TODO: handle exception
System.err.println(e.getMessage());
}
}
public ResultSet executeQuery(String sql)
{
try {
conn = DriverManager.getConnection(
"jdbc:mysql://localhost:3306/luntan ", "root ",
"12345678 ");
stmt = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_READ_ONLY);
rs = stmt.executeQuery(sql);
} catch (Exception ex) {
// TODO: handle exception
System.err.println(ex.getMessage());
}
return rs;
}
public int executeUpdate(String sql)
{
int result=0;
try {
conn = DriverManager.getConnection(
"jdbc:mysql://localhost:3306/luntan ", "root ",
"12345678 ");
stmt = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_READ_ONLY);
rs = stmt.executeQuery(sql);
} catch (Exception ex) {
// TODO: handle exception
System.err.println(ex.getMessage());
result=0;
}
return result;
}
}
<%@ page language= "java " contentType= "text/html;charset=gb2312 "%>
<%@ page import= "java.sql.* " %>
<jsp:useBean id= "connBean " scope= "page " class= "beans.connDB "/>
<html>
<head>
<title> My JSP 'reg_ok.jsp ' starting page </title>
</head>
<body>
<%
String id=request.getParameter( "id ");
String name=request.getParameter( "name ");
String password=request.getParameter( "password ");
String sex=request.getParameter( "sex ");
ResultSet rs=connBean.executeQuery( "select * from register where username= ' "+name+ " ' ");
System.out.println(name);System.out.println(password);
&nbs
为什么这个程序会报这样的错语
cannot is issue data manipulation statements with executeQuery();请问什么原因哦``
package beans;
import java.sql.*;
public class connDB {
Connection conn=null;
Statement stmt =null;
ResultSet rs=null;
public connDB()
{
try {
Class.forName( "com.mysql.jdbc.Driver ");
} catch (Exception e) {
// TODO: handle exception
System.err.println(e.getMessage());
}
}
public ResultSet executeQuery(String sql)
{
try {
conn = DriverManager.getConnection(
"jdbc:mysql://localhost:3306/luntan ", "root ",
"12345678 ");
stmt = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_READ_ONLY);
rs = stmt.executeQuery(sql);
} catch (Exception ex) {
// TODO: handle exception
System.err.println(ex.getMessage());
}
return rs;
}
public int executeUpdate(String sql)
{
int result=0;
try {
conn = DriverManager.getConnection(
"jdbc:mysql://localhost:3306/luntan ", "root ",
"12345678 ");
stmt = conn.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_READ_ONLY);
rs = stmt.executeQuery(sql);
} catch (Exception ex) {
// TODO: handle exception
System.err.println(ex.getMessage());
result=0;
}
return result;
}
}
<%@ page language= "java " contentType= "text/html;charset=gb2312 "%>
<%@ page import= "java.sql.* " %>
<jsp:useBean id= "connBean " scope= "page " class= "beans.connDB "/>
<html>
<head>
<title> My JSP 'reg_ok.jsp ' starting page </title>
</head>
<body>
<%
String id=request.getParameter( "id ");
String name=request.getParameter( "name ");
String password=request.getParameter( "password ");
String sex=request.getParameter( "sex ");
ResultSet rs=connBean.executeQuery( "select * from register where username= ' "+name+ " ' ");
System.out.println(name);System.out.println(password);
&nbs
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