非常感谢，下面是我的BaseDao，貌似没有错的，你看看 package com.scce.dao; import java.io.Serializable; import java.sql.*; import javax.servlet.jsp.jstl.sql.Result; import javax.servlet.jsp.jstl.sql.ResultSupport; public class BaseDAO impleme

非常感谢，下面是我的BaseDao，貌似没有错的，你看看

package com.scce.dao;

import java.io.Serializable;
import java.sql.*;
import javax.servlet.jsp.jstl.sql.Result;
import javax.servlet.jsp.jstl.sql.ResultSupport;

public class BaseDAO implements Serializable {
private static final String DRIVER = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
private static final String URL = "jdbc:sqlserver://localhost:1433;databasename=GameCard_DB";

public static Connection getConnection() {
Connection con = null;
try {
Class.forName(DRIVER);
con = DriverManager.getConnection(URL, "sa", "scce");
} catch (Exception e) {
e.printStackTrace();
}
return con;
}

/**************************************************** 执行SQL语句 *********************************************************/
// 运行有结果集，无参数的sql语句
public static Result runSelectSql(String sql) {
Connection con = null;
PreparedStatement ps = null;
ResultSet res = null;
Result result = null;
try {
con = getConnection();
ps = con.prepareStatement(sql);
res = ps.executeQuery();
result = ResultSupport.toResult(res);
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
res.close();
ps.close();
con.close();
} catch (Exception e) {
e.printStackTrace();
}
}
return result;
}

// 运行有结果集，有参数的sql语句
public static Result runSelectSql(String sql, Object[] params) {
Connection con = null;
PreparedStatement ps = null;
ResultSet res = null;
Result result = null;
try {
con = getConnection();
ps = con.prepareStatement(sql);
for (int i = 0; i < params.length; i++) {
ps.setObject(i + 1, params[i]);
}
res = ps.executeQuery();
result = ResultSupport.toResult(res);
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
res.close();
ps.close();
con.close();
} catch (Exception e) {
e.printStackTrace();
}
}
return result;
}

// 运行无结果集，无参数的sql语句
public static boolean runUpdateSql(String sql) {
Connection con = null;
PreparedStatement ps = null;
try {
con = getConnection();
ps = con.prepareStatement(sql);
ps.executeUpdate();
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
} finally {
try {
ps.close();
con.close();
} catch (Exception e) {
e.printStackTrace();
}
}

}

// 运行无结果集，有参数的sql语句
public static boolean runUpdateSql(String sql, Object[] params) {
Connection con = null;
PreparedStatement ps = null;
try {
con = getConnection();
ps = con.prepareStatement(sql);
for (int i = 0; i < params.length; i++) {
ps.setObject(i + 1, params[i]);
}
ps.executeUpdate();
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
} finally {
try {
ps.close();
con.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}

/**************************************************** 执行存储过程语句 *********************************************************/
// 无结果集，无参数的存储过程
public static boolean runUpdateByProc(String procName) {
Connection con = null;
CallableStatement cs = null;
try {
con = getConnection();
String proc = String.format("{call %s()}", procName);
cs = con.prepareCall(proc);
return cs.executeUpdate() > 0;
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
cs.close();
con.close();
} catch (Exception e) {
e.printStackTrace();
}
}
return false;
}

// 无结果集，有参数的存储过程
public static boolean runProcUpdate(String procName, Object[] params) {
Connection con = null;
CallableStatement cs = null;
try {
con = getConnection();
String proc = "{call " + procName + "(";
for (int i = 0; i < params.length; i++) {
proc += "?,";
}
proc = proc.substring(0, proc.length() - 1) + ")}";
cs = con.prepareCall(proc);
for (int i = 0; i < params.length; i++) {
// 说明是输入参数
if (params[i] != null) {
cs.setObject(i + 1, params[i]);
}
// 否则输出参数，就要注册
else {
// 第一个为位置，第二个为类型
cs.registerOutParameter(i + 1, java.sql.Types.VARCHAR);
}
}
cs.executeUpdate();// 只是执行了存储过程，但是还没有把执行赋给输出参数
for (int i = 0; i < params.length; i++) {
if (params[i] == null) { // 说明是输出参数
params[i] = cs.getObject(i + 1);
}
}
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
} finally {
try {
cs.close();
con.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}

// 有结果集，无参数的存储过程
public static Result runSelectByProc(String procName) {
Connection con = null;
ResultSet res = null;
Result result = null;
CallableStatement cs = null;
try {
con = getConnection();
String proc = String.format("{call %s}", procName);
cs = con.prepareCall(proc);
res = cs.executeQuery();
result = ResultSupport.toResult(res);
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
res.close();
cs.close();
con.close();
} catch (Exception e) {
e.printStackTrace();
}
}
return result;
}

// 有结果集，有参数的存储过程
public static Result runSelectByProc(String procName, Object[] params) {
Connection con = null;
PreparedStatement ps = null;
ResultSet res = null;
Result result = null;
CallableStatement cs = null;
try {
con = getConnection();
String proc = "{call " + procName + "(";
for (int i = 0; i < params.length; i++) {
proc += "?,";
}
proc = proc.substring(0, proc.length() - 1) + ")}";
cs = con.prepareCall(proc);
for (int i = 0; i < params.length; i++) {
if (params[i] != null)
{
cs.setObject(i + 1, params[i]);
} else
{

cs.registerOutParameter(i + 1, java.sql.Types.VARCHAR);
}
}
res = cs.executeQuery();
result = ResultSupport.toResult(res);
for (int i = 0; i < params.length; i++) {
if (params[i] == null)
{
params[i] = cs.getObject(i + 1);
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
cs.close();
con.close();
} catch (Exception e) {
e.printStackTrace();
}
}
return result;
}

}