jsp留言板源代码四:给jsp初学者._MySQL

来源：微智科技网

作者: precom (皮蛋)
其中的opDb.java
============================================
package ymbean;

import java.sql.*;
import java.util.*;
import java.text.*;
import com.chinazjj.sql.dsql;
import com.chinazjj.util.dutil;

//其他的包dsql,dutil中的内容我就不再贴了,在本文件中用到的两个函数都很简

单
public class opDb {

private String inquire_value="",inquire_item="",disptype="",inqtyp

e="";
private String inquire_num="",inquire_addr="",inquire_name="";

private dutil ldutil=new dutil();
public opDb() {

}

public void setinquire_item(String name) { inquire_item= name

;}
public void setinquire_value( String name ) { inquire_value = ldut

il.chineseToUnicode(name);}
public void setdisptype(String name) { disptype=name;}
public void setinqtype(String name) { inqtype=name;}

public void setinquire_num( String name ) { inquire_num = ldutil.c

hineseToUnicode(name);}
public void setinquire_addr( String name ) { inquire_addr = ldutil

.chineseToUnicode(name);}
public void setinquire_name( String name ) { inquire_name = ldutil

.chineseToUnicode(name);}

public String getinquire_dndata()
{
return "";
}

public ResultSet executeQuery(String sql)
{
ResultSet rs = null;
Statement lstmt = null;
try {
lstmt = connectdb();
rs = lstmt.executeQuery(sql);
System.out.println("executeQuery: "+sql);
} catch(SQLException ex) { System.err.println("executeQuery: " +

ex.getMessage());}
return rs;
}

public Statement getStmt()
{
Statement lstmt = null;
lstmt = connectdb();
return lstmt;
}

public String executeUpdate(String sql)
{
ResultSet rs = null;
Statement lstmt = null;
try {
lstmt = connectdb();