ปัญหา Java web service ใช้ php เรียกใช้ service จัดการฐานข้อมูล database ไม่ได้

<?
    
$client = new SoapClient('http://localhost:8080/axis2/services/project?wsdl');


$para=array('user_id'=>$User);
$rs = $client->delete_user($para);
if ($client->fault) {
    echo "ไม่สามารถแก้ไขรายการได้";
        echo "<br>";
        echo "<a href=manage.php>กลับไป</a>";
} else {
       print_r($rs);
        echo "แก้ไขรายการสำเร็จ";
        echo "<br>";
        echo "<a href=manage.php>กลับไป</a>";
            }
    
    ?>

package db.access;



import org.apache.axiom.om.*;
import java.sql.*;
public class project {
    
    public project() {
        // TODO Auto-generated constructor stub
    }
    private Connection connectDatabase( )
    {
        Connection con=null;
        try{
            Class.forName ("com.mysql.jdbc.Driver");
            con  = DriverManager.getConnection ("jdbc:mysql://localhost/ehr_db","root", "1234");
            /*DriverManageger request for database connection*/
        }
        catch(ClassNotFoundException e){
            e.printStackTrace();
        }
        catch(SQLException sql){
            sql.printStackTrace();
        }
        return con;
    }
    private OMElement createXML(ResultSet rs) throws Exception
       {
        ResultSetMetaData rsmd = rs.getMetaData();
        OMFactory  fac = OMAbstractFactory.getOMFactory();
        OMNamespace omNs = fac.createOMNamespace("http://axiom.demo/xsd", "ns");
        OMElement  root =  fac.createOMElement ("ehr",omNs);
        
        OMElement element,child;
        while (rs.next())
        {
            element = fac.createOMElement ("data",omNs);
            child = fac.createOMElement (rsmd.getColumnLabel(1),omNs);
            child.addChild(fac.createOMText(rs.getString(1)));
            element.addChild(child);
            for (int i = 2; i <= rsmd.getColumnCount(); i++)
            {
                child =fac.createOMElement (rsmd.getColumnLabel(i),omNs);
                child.addChild(fac.createOMText(rs.getString(i)));
                element.addChild(child);
            }
            root.addChild(element);
        }
       return root;
     }
    public OMElement manage( String name ) 
    {
     Connection con=null;
     Statement stmt=null;
     OMElement doc =null;
      try
      {
                con= connectDatabase();
                stmt = con.createStatement();
                ResultSet rs = stmt.executeQuery("SELECT * FROM User_account join Officer on User_account.user_id=Officer.user_id where Fname like '%"+name+"%'");
                doc = createXML(rs);
       }
      catch (Exception e)
      {
              e.printStackTrace( );
      }
      finally
      {
             try
              {
                  con.close();
                  stmt.close();
              }
              catch(SQLException e)
              {
                e.printStackTrace( );
              }
      }
     return doc;   
    } 

    public OMElement update_user( String sex,int posit,String fname,String lname,int salary, String address,String email,String tel,String special,String enddate,String skill,String research,String train,String edu,String code ) 
    {
     Connection con=null;
     Statement stmt=null;
     OMElement doc =null;
      try
      {
                con= connectDatabase();
                stmt = con.createStatement();
                ResultSet rs = stmt.executeQuery("update Officer set Sex='"+sex+"', Position_id='"+posit+"',Fname='"+fname+"',Lname='"+lname+"', Salary='"+salary+"',Address='"+address+"',Email='"+email+"',Tel='"+tel+"', Special_ability='"+special+"',End_date='"+enddate+"',Skill='"+skill+"', Research='"+research+"',Training='"+train+"',Education='"+edu+"' where User_id='"+code+"'");
                doc = createXML(rs);
       }
      catch (Exception e)
      {
              e.printStackTrace( );
      }
      finally
      {
             try
              {
                  con.close();
                  stmt.close();
              }
              catch(SQLException e)
              {
                e.printStackTrace( );
              }
      }
     return doc;   
    } 
       
    public OMElement delete_user( String user_id ) 
    {
     Connection con=null;
     Statement stmt=null;
     OMElement doc =null;
      try
      {
                con= connectDatabase();
                stmt = con.createStatement();
                ResultSet rs = stmt.executeQuery("delete from User_account where User_id='"+user_id+"'");
                doc = createXML(rs);
       }
      catch (Exception e)
      {
              e.printStackTrace( );
      }
      finally
      {
             try
              {
                  con.close();
                  stmt.close();
              }
              catch(SQLException e)
              {
                e.printStackTrace( );
              }
      }
     return doc;   
    } 
   


}