在jsp頁面中取控制層session的key值到頁面時出現數字碼，各位大俠指點一下，謝謝-有解無憂

jsp 頁面
<%=session.getAttribute("users")%>

取出的結果是：
[table.admin.UserInfo@1f4cdd2, table.admin.UserInfo@f4ca49, table.admin.UserInfo@10c94a7, table.admin.UserInfo@f3770c, table.admin.UserInfo@cbf92, table.admin.UserInfo@f549de, table.admin.UserInfo@1c4a2d3, table.admin.UserInfo@9e0c2d, table.admin.UserInfo@318293, table.admin.UserInfo@739aa3]

邏輯層
public ArrayList getUserList() throws Exception{
  ArrayList userLists = new ArrayList();

      try {
  conn = DatabaseConnection.getConnection();
  String sql = "select * from t_user_info";
  ps = conn.prepareStatement(sql);
  rs = ps.executeQuery();
  while(rs.next()) {
UserInfo users = new UserInfo();
users.setUser_id(rs.getInt("user_id"));
System.out.println("getUserList...."+users.getUser_id());
users.setUser_name(rs.getString("user_name"));
System.out.println("getUserList...."+users.getUser_name());
users.setUser_sex(rs.getInt("user_sex"));
users.setUser_mail(rs.getString("user_mail"));
users.setUser_tel(rs.getString("user_tel"));
users.setUser_address(rs.getString("user_address"));
users.setUser_create_time(rs.getString("user_create_time"));
users.setUser_rank(rs.getString("user_rank_id"));
users.setUser_dept(rs.getString("user_dept_id"));
userLists.add(users);
  }
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
throw e;
}finally{
   if(rs != null){
   rs.close();
   }
   if(ps != null){
   ps.close();
   }
   if(conn != null){
   conn.close();
   }
}

  return userLists;
}

控制層
    public void doGet(HttpServletRequest request,HttpServletResponse response)
    throws ServletException, IOException {
     HttpSession session = request.getSession();
  UserInfo userInfo = new UserInfo();
  searchAllHandle handle = new searchAllHandle();
  try {
  ArrayList users = handle.getUserList();

          session.setAttribute("users", users);
          request.getRequestDispatcher("serchUserList.jsp").forward(request, response);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
    }

uj5u.com熱心網友回復：

可能是因為你的物體類沒有toString()方法

uj5u.com熱心網友回復：

參考 1 樓 LwinnerG 的回復:

可能是因為你的物體類沒有toString()方法

怎么寫物體類toString()方法？麻煩寫一下，謝謝了

uj5u.com熱心網友回復：

參考 2 樓 xiaoyudaxia05 的回復:

Quote: 參考 1 樓 LwinnerG 的回復:
可能是因為你的物體類沒有toString()方法

怎么寫物體類toString()方法？麻煩寫一下，謝謝了



    @Override

    public String toString() {

        return "UserInfo{" +

                "user_id=" + user_id +

                ", user_name='" + user_name + '\'' +

                ", user_sex=" + user_sex +

                ", user_tel='" + user_tel + '\'' +

                ", user_address='" + user_address + '\'' +

                ", user_creae_time='" + user_creae_time + '\'' +

                ", user_rank_id='" + user_rank_id + '\'' +

                ", user_dept_id='" + user_dept_id + '\'' +

                '}';

    }

這是按照你的欄位寫的你復制過去應該是沒問題的

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標籤：Java相關

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