错哪了？新手,等待中,想了半天了
日期：2014-05-18 浏览次数：21005 次
哪里错了？新手,等待中,想了半天了
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Properties;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.sql.DataSource;
//import org.apache.commons.dbcp.BasicDataSource;
/**
*
*/
public class DataBase {
private static DataSource dts = null;
public static Connection getConnection() {
Connection conn = null;
try {
if (dts == null) {
Class.forName( "oracle.jdbc.driver.OracleDriver " );
String url = "jdbc:oracle:thin:@************* ";
conn = DriverManager.getConnection(url, "test ", "test ");
}
//conn = dts.getConnection();
} catch (Exception e) {
e.printStackTrace();
}
return conn;
}
public static void closeConnection(Connection con, Statement stmt,
ResultSet rs) {
try {
if (rs != null) {
rs.close();
rs = null;
}
if (stmt != null) {
stmt.close();
stmt = null;
}
if (con != null) {
con.close();
con = null;
}
} catch (Exception e) {
e.printStackTrace();
} finally {
rs = null;
stmt = null;
con = null;
}
}
}
上面是写的DataBase,下面是JSP
<%@page contentType= "text/html;charset=GBK " import= "java.sql.* "%>
<html>
<title> 用户数据 </title>
<body>
<%
Connection conn=null;
Statement stmt=null;
ResultSet rs=null;
try{
conn = DataBase.getConnection();
String query= "select *from EMP ";
rs=stmt.executeQuery(query);
%>
<h4> 取出信息 </h4>
<table border= "1 ">
<tr>
<th> TEMPO </th> <th> ENAME </th> <th> JOB </th> <th> MGR </th> <th> HIREDATE </th> <th> SAL </th> <th> COMM </th> <th> DEPTNO </th>
</tr>
<%
while(rs.next()){
out.println( " <tr> ");
out.println( " <td> "+rs.getString( "TEMPO ")+ " </td> ");
out.println( " <td> "+rs.getString( "ENAME ")+ " </td> ");
out.println( " <td> "+rs.getString( "JOB ")+ " </td> ");
out.println( " <td> "+rs.getString( "MGR ")+ " </td> ");
out.println( " <td> "+rs.getString( "HIREDATE ")+ &quo
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Properties;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.sql.DataSource;
//import org.apache.commons.dbcp.BasicDataSource;
/**
*
*/
public class DataBase {
private static DataSource dts = null;
public static Connection getConnection() {
Connection conn = null;
try {
if (dts == null) {
Class.forName( "oracle.jdbc.driver.OracleDriver " );
String url = "jdbc:oracle:thin:@************* ";
conn = DriverManager.getConnection(url, "test ", "test ");
}
//conn = dts.getConnection();
} catch (Exception e) {
e.printStackTrace();
}
return conn;
}
public static void closeConnection(Connection con, Statement stmt,
ResultSet rs) {
try {
if (rs != null) {
rs.close();
rs = null;
}
if (stmt != null) {
stmt.close();
stmt = null;
}
if (con != null) {
con.close();
con = null;
}
} catch (Exception e) {
e.printStackTrace();
} finally {
rs = null;
stmt = null;
con = null;
}
}
}
上面是写的DataBase,下面是JSP
<%@page contentType= "text/html;charset=GBK " import= "java.sql.* "%>
<html>
<title> 用户数据 </title>
<body>
<%
Connection conn=null;
Statement stmt=null;
ResultSet rs=null;
try{
conn = DataBase.getConnection();
String query= "select *from EMP ";
rs=stmt.executeQuery(query);
%>
<h4> 取出信息 </h4>
<table border= "1 ">
<tr>
<th> TEMPO </th> <th> ENAME </th> <th> JOB </th> <th> MGR </th> <th> HIREDATE </th> <th> SAL </th> <th> COMM </th> <th> DEPTNO </th>
</tr>
<%
while(rs.next()){
out.println( " <tr> ");
out.println( " <td> "+rs.getString( "TEMPO ")+ " </td> ");
out.println( " <td> "+rs.getString( "ENAME ")+ " </td> ");
out.println( " <td> "+rs.getString( "JOB ")+ " </td> ");
out.println( " <td> "+rs.getString( "MGR ")+ " </td> ");
out.println( " <td> "+rs.getString( "HIREDATE ")+ &quo
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