写了一个JDBC的sqlHelper拿来让大家改正下包含了一般和存储...

本帖最后由王贺于 2013-11-23 16:50 编辑

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<P style="MARGIN: 10px auto; TEXT-INDENT: 0px; WORD-WRAP: break-word">package sqlHelper;</P>
<P style="MARGIN: 10px auto; TEXT-INDENT: 0px; WORD-WRAP: break-word">import java.sql.*;
import java.util.ArrayList;</P>
<P style="MARGIN: 10px auto; TEXT-INDENT: 0px; WORD-WRAP: break-word">public class JdbcSqlHelper {
</P>
<P style="MARGIN: 10px auto; TEXT-INDENT: 0px; WORD-WRAP: break-word">private String odbcStr;//Odbc字符串
//定义odbcStr写入输出
public String getOdbcStr() {
return odbcStr;
}</P>
<P style="MARGIN: 10px auto; TEXT-INDENT: 0px; WORD-WRAP: break-word">public void setOdbcStr(String odbcStr) {
this.odbcStr = odbcStr;
}
private Connection conn=null;//定义连接变量
private Statement stat=null;//定义Statement 变量
//定义函数用于连接数据库
void connSql()
{
try {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
try {
conn=DriverManager.getConnection("jdbc:odbc:"+odbcStr);
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/// <summary>
/// 关闭数据库连接
/// </summary>
void closeSqlconnAndStatement()
{
try {
if(conn.isClosed()==false)
conn.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
stat.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
//一般数据操作方法
/// <summary>
/// 一般查询函数，返回值ResultSet类型
/// </summary>
/// <param name="sqlStr">执行字符串</param>
public ResultSet selectData(String sqlStr)//查询数据，反回数据表数据
{
connSql();
ResultSet rs = null;
try {
if(conn.isClosed()==false){
stat=conn.createStatement();
rs=stat.executeQuery(sqlStr);
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return rs;
}
/// <summary>
/// 一般插入函数，返回值为影响的行数，调用update_insert_delete_Function函数
/// </summary>
/// <param name="sqlStr">执行字符串</param>
public int insertData(String sqlStr)// 插入数据操作，返回插入行数
{
return update_insert_delete_Function(sqlStr);
}
/// <summary>
/// 一般更新函数，返回值为影响的行数，调用update_insert_delete_Function函数
/// </summary>
/// <param name="sqlStr">执行字符串</param>
public int updateDate(String sqlStr)//更新数据操作，返回更新行数
{
return update_insert_delete_Function(sqlStr);
}
/// <summary>
/// 一般删除函数，返回值为影响的行数，调用update_insert_delete_Function函数
/// </summary>
/// <param name="sqlStr">执行字符串</param>
public int deleteDate(String sqlStr)//删除数据操作，返回删除行数
{
return update_insert_delete_Function(sqlStr);
}
/// <summary>
/// 为一般增删改提供公用方法
/// </summary>
/// <param name="sqlStr">执行字符串</param>
int update_insert_delete_Function(String sqlStr)//更新、插入、删除公用方法
{
connSql();
int i=0;
try {
stat=conn.createStatement();
i=stat.executeUpdate(sqlStr);
closeSqlconnAndStatement();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return i;
}</P>
<P style="MARGIN: 10px auto; TEXT-INDENT: 0px; WORD-WRAP: break-word">//.....................................................................................................
//......................................................................................................
//........................................................................................................
//存储过程对数据操作
CallableStatement cs=null;//定义存储过程的执行字符串连接
/// <summary>
/// 关闭数据库连接和执行字符串连接，
/// 在执行完selectStoreData函数，
/// 然后调用此函数以断开连接；
/// </summary>
public void closeConnAndCallableStatement()
{
try {
cs.close();
conn.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/// <summary>
/// 存储查询函数
/// </summary>
/// <param name="storeSqlStr">存储过程字符串</param>
/// <param name="al">存储过程的参数集合</param></P>
<P style="MARGIN: 10px auto; TEXT-INDENT: 0px; WORD-WRAP: break-word">public ResultSet selectStoreData(String storeSqlStr,ArrayList<Object> al) throws SQLException
{
connSql();
cs=conn.prepareCall(storeSqlStr);
checkType(al);
ResultSet rs=cs.executeQuery();
return rs;
}
/// <summary>
/// 判断参数集合的数据类型
/// </summary>
/// <param name="al">存储过程的参数集合</param>
void checkType(ArrayList<Object> al) throws NumberFormatException, SQLException
{<SPAN class=Apple-converted-space> </SPAN>
for(int i=0;i<al.size();i++)
{
if(al.get(i) instanceof Integer){
cs.setInt(i+1, Integer.parseInt((String) al.get(i)));
}
else if(al.get(i) instanceof String){
cs.setString(i+1,(String) al.get(i));
}
else if(al.get(i) instanceof Float){
cs.setFloat(i+1, Float.parseFloat((String)al.get(i)));
}
else if(al.get(i) instanceof Double){
cs.setDouble(i+1, Double.parseDouble((String)al.get(i)));
}
else if(al.get(i) instanceof Long){
cs.setLong(i+1, Long.parseLong((String)al.get(i)));
}
else if(al.get(i) instanceof Date){
cs.setDate(i+1, Date.valueOf((String)al.get(i)));
}
else if(al.get(i) instanceof Time){
cs.setTime(i+1, Time.valueOf((String)al.get(i)));
}
else if(al.get(i) instanceof Timestamp)
{
cs.setTimestamp(i+1, Timestamp.valueOf((String)al.get(i)));
}
else
{
cs.setObject(i+1, al.get(i));
}
}
}
/// <summary>
/// 存储插入函数
/// </summary>
/// <param name="storeSqlStr">存储过程字符串</param>
/// <param name="al">存储过程的参数集合</param>
public int insertStoreData(String storeSqlStr,ArrayList<Object> al) throws SQLException
{
return update_insert_delete_Store_Function(storeSqlStr, al);
}
/// <summary>
/// 存储更新函数
/// </summary>
/// <param name="storeSqlStr">存储过程字符串</param>
/// <param name="al">存储过程的参数集合</param>
public int updateStoreData(String storeSqlStr,ArrayList<Object> al) throws SQLException
{
return update_insert_delete_Store_Function(storeSqlStr, al);
}
/// <summary>
/// 存储删除函数
/// </summary>
/// <param name="storeSqlStr">存储过程字符串</param>
/// <param name="al">存储过程的参数集合</param>
public int deleteStoreData(String storeSqlStr,ArrayList<Object> al) throws SQLException
{
return update_insert_delete_Store_Function(storeSqlStr, al);
}
/// <summary>
/// 更新、插入、删除公用方法
/// </summary>
/// <param name="storeSqlStr">存储过程字符串</param>
/// <param name="al">存储过程的参数集合</param>
int update_insert_delete_Store_Function(String storeSqlStr,ArrayList<Object> al)
{
connSql();
try {
cs=conn.prepareCall(storeSqlStr);
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
checkType(al);//调用判断参数类型
} catch (NumberFormatException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
int i = 0;
try {
i = cs.executeUpdate();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
closeConnAndCallableStatement();//关闭数据库连接
return i;
}
</P>
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}</P></DIV>
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写了一个JDBC的sqlHelper拿来让大家改正下包含了一般和存储...

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