求大神看看异常怎么解决

Question

 public item itemmessage1(int id ){  Connection conn=null;   PreparedStatement st=null;  ResultSet rs=null;  try {   conn=user.getconnection();   String sql="select * from chongqing where id=?;";   st=(PreparedStatement) conn.prepareStatement(sql);   st.setInt(1, id);   rs=st.executeQuery();   if(rs.next())   {    item it=new item();    it.setId(rs.getInt("id"));    it.setName(rs.getString("name"));    it.setPrice(rs.getDouble("price"));    it.setPicture(rs.getString("picture"));    return it;   }else   {    return null;   }    } catch (Exception e) {      return null;  }finally{   if(rs!=null)   {    try {     rs.close();     rs=null;    } catch (SQLException e) {     // TODO Auto-generated catch block     e.printStackTrace();    }    if(st!=null)    {     try {      st.close();      st=null;     } catch (SQLException e) {      // TODO Auto-generated catch block      e.printStackTrace();     }   }  }    }}item it=read1.itemmessage1(Integer.parseInt(request.getParameter("id")));这句话出现了java.lang.NumberFormatException: null求大神解决

Answer 1

把异常贴出来