java连接oracle,取io文件内容,子串替换

王朝oracle·作者佚名  2008-05-19
宽屏版  字体: |||超大  

package common;

import java.sql.*;

import java.io.*;

import javax.naming.*;

import javax.sql.*;

import java.util.*;

public class DbAction{

public Connection conn = null;

public PreparedStatement stmt=null;

public Properties getProperties(String str){

Properties properties = new Properties();

try{

InputStream is =getClass().getResourceAsStream("/"+str);

properties.load(is);

if(is != null)

is.close();

}

catch(IOException ioexception){

System.out.println("Open config file failure.");

}

catch(NullPointerException e){

System.out.println("is is null");

}

return properties;

}

public synchronized void DbConnect(){

String strCon=null;

Properties properties = getProperties("datasource.properties");

String username = properties.getProperty("username");

String password = properties.getProperty("password");

String hostname = properties.getProperty("hostname");

String hostip = properties.getProperty("hostip");

String hostport = properties.getProperty("hostport");

try

{

Class.forName("oracle.jdbc.driver.OracleDriver");

}

catch(ClassNotFoundException classnotfoundexception)

{

System.out.println("Could not load the driver.");

classnotfoundexception.printStackTrace();

}

strCon = "jdbc:oracle:thin:@"+hostip+":"+hostport+":"+hostname;

try

{

conn = DriverManager.getConnection(strCon,username,password);

}

catch(SQLException sqlexception)

{

System.out.println("Creat connection error.");

sqlexception.printStackTrace();

}

//

try{

//

Context initContext = new InitialContext();

//连接池用

//

Context envContext = (Context) initContext.lookup("java:/comp/env");

//

DataSource ds = (DataSource) envContext.lookup("jdbc/oracle");

//

conn = ds.getConnection();

//

}

//

catch(NamingException ne){

//

ne.printStackTrace();

//

}

//

catch(SQLException se){

//

se.printStackTrace();

//

}

}

public String sqlSearch(String str){

String sql=null;

Properties properties = getProperties("sql.properties");

sql = properties.getProperty(str);

return sql;

}

public ResultSet dbSelect(String sql){

ResultSet rs=null;

try{

this.stmt = conn.prepareStatement(sql.trim());

rs = this.stmt.executeQuery();

}

catch(SQLException e){

e.printStackTrace();

}

return rs;

}

public ResultSet dbSelect(String sql,String str1){

ResultSet rs=null;

try{

this.stmt = conn.prepareStatement(sql.trim());

this.stmt.setString(1,str1);

rs = this.stmt.executeQuery();

}

catch(SQLException e){

e.printStackTrace();

}

return rs;

}

public ResultSet dbSelect(String sql,String str1,String str2){

ResultSet rs=null;

try{

this.stmt = conn.prepareStatement(sql.trim());

this.stmt.setString(1,str1);

this.stmt.setString(2,str2);

rs = this.stmt.executeQuery();

}

catch(SQLException e){

e.printStackTrace();

}

return rs;

}

public int dbUpd(String sql){

int rtncd=0;

try{

stmt = conn.prepareStatement(sql);

rtncd = stmt.executeUpdate();

if(rtncd != 0)rtncd = 1;

}

catch(Exception e){

e.printStackTrace();

}

return rtncd;

}

public int dbDel(String sql){

int rtncd=0;

try{

stmt = conn.prepareStatement(sql);

rtncd = stmt.executeUpdate();

if(rtncd != 0)rtncd = 1;

}

catch(Exception e){

e.printStackTrace();

}

return rtncd;

}

public int dbAdd(String sql){

int rtncd=0;

try{

stmt = conn.prepareStatement(sql);

rtncd = stmt.executeUpdate();

if(rtncd != 0)rtncd = 1;

}

catch(Exception e){

e.printStackTrace();

}

return rtncd;

}

public void close(){

try{

if(stmt!=null)stmt.close();

if(conn!=null)conn.close();

}

catch(SQLException e){

e.printStackTrace();

}

}

public String replaSbstr(String strSource,String strFrom,String strTo){

if (strSource == null) {

return null;

}

int i = 0;

if ((i = strSource.indexOf(strFrom, i)) = 0) {

char[] cSrc = strSource.toCharArray();

char[] cTo = strTo.toCharArray();

int len = strFrom.length();

StringBuffer buf = new StringBuffer(cSrc.length);

buf.append(cSrc,0,i);

buf.append(cTo);

//buf.append(cSrc, 0, i).append(cTo);

i += len;

int j = i;

while ((i = strSource.indexOf(strFrom, i)) 0) {

buf.append(cSrc,j,i-j);

buf.append(cTo);

//buf.append(cSrc, j, i - j).append(cTo);

i += len;

j = i;

}

buf.append(cSrc, j, cSrc.length - j);

return buf.toString();

}

return strSource;

}

// public static void main(String[] args) throws Exception{

//

DbAction d = new DbAction();

//

if (d.conn!=null)System.out.println("success");

//

String sql = d.sqlSearch("codesqlsle");

//

System.out.println(sql);

//

//ResultSet rs = d.dbSelect(sql);

//

//if (rs!=null)System.out.println("success");

////

try{

////

Statement stmt=conn.createStatement();

////

String strSQL = "SELECT CODEID FROM JS_CODE_TBL";

////

ResultSet rs = stmt.executeQuery(strSQL);

////

if(rs==null)System.out.println("creat rs error");

////

while(rs.next()){

////

String e=rs.getString("CODEID");

////

System.out.println(e);

////

}

////

rs.close();

////

stmt.close();

////

}

////

catch(SQLException e){

////

System.out.println("error");

////

}

//

String i = "-123456789012.311111111111111111111";

//

String j = moneychk(i);

//

System.out.println(j);

// }

}

 
 
 
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