oracle数据库java接口类,
/**************2004-04-21**************from wj*/
/*****oracle数据库接口***********/
package CMCC;
import java.sql.*;
import java.util.*;
import java.text.*;
import java.io.*;
import oracle.jdbc.driver.*;
public class jdbc_oracle_test
{
/*
public static void main( String args[] ){
jdbc_oracle db = new jdbc_oracle();
String Str;
int id;
ResultSet re = null;
re = db.query("select * from test");
try{
int i=0;
while(re.next() && i<10){
Str = re.getString("id");
System.out.println(Str);
i++;
}
}
catch(Exception e){
System.out.println("error!");
}
db.closestmt();
db.closeconn();
}
//*/
//String conn_str="jdbc:microsoft:sqlserver://127.0.0.1;DatabaseName=test";//---------数据库
String conn_str="jdbc:oracle:thin:@127.0.0.1:1521:test";
String username="test";//---------------数据库用户名
String password="test";//-------------数据库密码
private Connection conn=null;
private Statement stmt=null;
ResultSet rs=null;
//----------------------数据库链接----------------
public jdbc_oracle_test()
{
try
{
Class.forName("oracle.jdbc.driver.OracleDriver");
}
catch(java.lang.ClassNotFoundException e) {System.err.println("dbclass():"+e.getMessage());}
try
{
conn=DriverManager.getConnection(conn_str,username,password);
}
catch(SQLException ex)
{
System.err.println("dbclass():"+ex.getMessage());}
}
//---------------------取得数据库连接-------------
public Connection getConn()
{
return conn;
}
//---------------------数据库查询-----------------
public ResultSet query(String sql)
{
try
{
stmt=conn.createStatement();
rs=stmt.executeQuery(sql);}
catch(SQLException ex) {System.err.println("query():"+ex.getMessage());}
return rs;
}
//－－－－－－－－－－－数据库修改－－－－－－－－－
public void update(String sql)
{
try
{
stmt=conn.createStatement();
stmt.executeUpdate(sql);}
catch(SQLException ex) {System.err.println("update():"+ex.getMessage());}
}
//－－－－－－－－－－关闭数据源－－－－－－－
public void closestmt()
{
try{stmt.close();}
catch(SQLException ex) {System.err.println("closestmt():"+ex.getMessage());}
}
//－－－－－－－－－－关闭链接－－－－－－－－－
public void closeconn()
{
try{conn.close();}
catch(SQLException ex) {System.err.println("closeconn()"+ex.getMessage());}
}
//---------------------转换中文
public String toChinese(String s)
{
if(s==null)
return null;
try
{
String convert=new String(s.getBytes("ISO8859-1"),"gb2312");
return convert;
}
catch(Exception e){}
return null;
}
//--------------------分页
public String page1(int num,int line,int page_line,int start,int page,String search,String filename)
{
int pagetotal=line*page_line;//所要显示的总条数
int pagestart;//
int pagenum;//
int total=(num-start+line-1)/line;//取得总页数
int total_start=(num+pagetotal-1)/pagetotal;//取得总偏移数
String returnstr="";
if(start!=0)
{
int old_start=start-pagetotal;
returnstr+=" <a href="+filename+"?page=0&start="+old_start+search+"><<</a>";
}
pagestart=start/pagetotal*page_line;//取得当前页数
for(int i=0;i<total&&i<page_line;i++)
{
pagenum=pagestart+i+1;
returnstr+=" <a href="+filename+"?page="+i+"&start="+start+search+">"+pagenum+"</a>";
}
if(total_start!=(start/pagetotal+1)&&num!=0)
{
int new_start=start+pagetotal;
returnstr+=" <a href="+filename+"?page=0&start="+new_start+search+">>></a>";
}
return returnstr;
}
//-------------------------------取得时间
public String GetPath()
{
String dateString="123";
try
{
java.text.SimpleDateFormat formatter=new java.text.SimpleDateFormat("yyyy-MM");
java.util.Date currentTime_1=new java.util.Date();
dateString=formatter.format(currentTime_1);
}
catch(Exception e)
{
}
return dateString;
}
//-------------------------------取得时间
public String strNowtime()
{
String dateString="123";
try
{
java.text.SimpleDateFormat formatter=new java.text.SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
java.util.Date currentTime_1=new java.util.Date();
dateString=formatter.format(currentTime_1);
}
catch(Exception e)
{
}
return dateString;
}
//--------------------------去掉html---------------------------
public String HTMLEncode(String Str)
{
Str=ebbReplace(Str,"<","<");
Str=ebbReplace(Str,">",">");
Str=ebbReplace(Str,"\n","<BR>");
return Str;
}
//--------------------------替换变量---------------------------
public String ebbReplace(String Str,String oldStr,String newStr)
{
String ReturnStr="";
int i,j,t,m,n;
n=0;
j=oldStr.length();
if (Str.indexOf(oldStr)>-1)
{
while(Str.indexOf(oldStr,n)>-1)
{
i=Str.length();
if (Str.indexOf(oldStr)==0)
Str=newStr+Str.substring(j,i);
else
{
t=Str.indexOf(oldStr);
m=(t+j);
Str=Str.substring(0,t)+newStr+Str.substring(m,i);
n=t+newStr.length()-j+1;
}
}
}
ReturnStr=Str;
return ReturnStr;
}
//----------------------------ubb替换--------------------------
public String LCReplace(String Str,String BStr,String EStr,String ReStr)
{
String ReturnStr="",Str1="",Str2="";
int i,j,n;
n=0;
if ((Str.indexOf(BStr)>-1)&&((Str.indexOf(EStr)>-1)))
{
while(Str.indexOf(BStr,n)>-1)
{
i=Str.indexOf(BStr);
j=Str.indexOf(EStr);
Str1=Str.substring((i+BStr.length()),j);
Str2=ebbReplace(ReStr,"$lichao$",Str1);
Str1=BStr+Str1+EStr;
Str=ebbReplace(Str,Str1,Str2);
n=i+Str2.length()-Str1.length();
}
}
ReturnStr=Str;
return ReturnStr;
}
}
