jsp and java bean为什么查不出结果？？

[fanhoucheng780617]

救命！！！！！！！！！！！！

*******jsp*********
String[] param = {"男","汉","作业员"};
sqlbean.setConnection("com.microsoft.jdbc.sqlserver.SQLServerDriver","jdbc:microsoft:sqlserver://127.0.0.1:1433;DatabaseName=wrerp" ,"sa","");
sqlbean.setQuerystatement("Select * from 人事档案 where 性别 = ? and 民族 =? and 职务=?");
sqlbean.setParam(param);
rs=sqlbean.getResult();
******javabean************
public void setQuerystatement(String query_statement)
{
this.query_statement=query_statement;
}
public void setConnection(String driverName,String jdbcURL,String username,String passwd) throws Exception
{
Connection conn1;
Class.forName(driverName);
conn1=DriverManager.getConnection(jdbcURL,username,passwd);
conn1.setAutoCommit(false);
this.conn = conn1;
}
/*获取查询结果*/
public ResultSet getResult()
{
try
{
PreparedStatement select_stm=conn.prepareStatement(query_statement,java.sql.ResultSet.TYPE_SCROLL_INSENSITIVE,java.sql.ResultSet.CONCUR_READ_ONLY);
if (param!=null)
for(int i=0;i<param.length;i++)
select_stm.setString(i+1,param[i]);
result=select_stm.executeQuery();
}
catch(Exception e)
{
System.out.println(e);
}
return result;
}


为什么查不道结果