Jsp页面数据显示不全，数据库中的数据只能显示一部分，请大家看看是为什么。

> 查询数据库
public ArrayList selectByProjectName(String projectname) {
Connection conn = BaseDAO.getConnection();
PreparedStatement stmt = null;
ResultSet rs = null;
ArrayList list = null;//最后存放数据的集合

        if(conn == null){
            
            return null;
            
        }else{
            
              try {
                  //convert 转换
                  String sql ="select * from s_data where projectname like ?  ";
                    stmt=conn.prepareStatement(sql);
                    stmt.setString(1,"%"+projectname+"%");
                    rs = stmt.executeQuery();
               
                    if(rs!=null){
                         list = new ArrayList<TestData>();
                         while(rs.next()){
                             TestData testData = new TestData();
                             testData.setId(rs.getInt("id"));
                             testData.setProjectname(rs.getString("projectname"));
                             testData.setTestnum(rs.getInt("testnum"));
                             testData.setCustomname(rs.getString("customname"));
                             testData.setTestname(rs.getString("testname"));
                             testData.setData1(rs.getString("data1"));
                             testData.setData1(rs.getString("data2"));
                             testData.setData1(rs.getString("data3"));
                             testData.setData1(rs.getString("data4"));
                             testData.setData1(rs.getString("data5"));
                             testData.setData1(rs.getString("data6"));
                             testData.setData1(rs.getString("data7"));
                             testData.setData1(rs.getString("data8"));
                          list.add(testData) ; 
                         }
                    }
                    System.out.println("sql"+sql);
                    
                } catch (SQLException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                    
                    return  null;
                }finally{
                    
                    BaseDAO.close(rs);
                    BaseDAO.close(stmt);
                    BaseDAO.close(conn);
                }
              return list;
        }

查找servlert
response.setContentType("text/html");
request.setCharacterEncoding("utf-8");
HttpSession session = request.getSession();

    TestDataService service = new TestDataService();
    String type =request.getParameter("selects");
    String content =request.getParameter("content");
    if(content.equals("") || content==null) {
        System.out.print("<script>alert('实验数据正在更新');</script>");
        System.out.println("实验数据正在更新！");
//        response.sendRedirect("/manage/showAddSeachBook.jsp");
    } else{
        
        ArrayList <TestData> list = service.getAllDatas(type, content);
        
        System.out.println("模糊查询:"+list);
        System.out.println("content："+content);
        System.out.println("type："+type);
        
        session.setAttribute("alldata", list);
        request.getRequestDispatcher("/manage/showAllData.jsp").forward(request, response);
        
    }

jsp页面
<%
Object o = session.getAttribute("alldata");
%>
<%System.out.println("前台页面"+o);%>

       <%     if(o!=null){
       List <TestData> list = (List<TestData>)o;
      %>
      <% System.out.println("前台页面list："+list);%>
      <% 
       String type = request.getParameter("selects");
       String content = request.getParameter("content");
       TestDataService service = new TestDataService();  
       list = service.getAllDatas(type, content); 
       %>
       <% System.out.println("前台页面list："+list);%>
       <% 
        for(int i = 0;i<list.size();i++){
           TestData testData = list.get(i);
      
    %> 
    
       <tr>
           <td align="center"><%=i+1 %></td>
           <td><%=testData.getProjectname()%></td>
           <td><%=testData.getTestnum() %> </td>
           <td><%=testData.getCustomname() %> </td>
           <td><%=testData.getTestname() %> </td>
           <td><%=testData.getData1() %></td>
           <td><%=testData.getData2()%> </td>
           <td><%=testData.getData3()%> </td>
           <td><%=testData.getData4()%> </td>
           <td><%=testData.getData5()%> </td>
           <td><%=testData.getData6()%> </td>
           <td><%=testData.getData7()%> </td>
           <td><%=testData.getData8()%> </td>
      </tr>  
            
<%} %> 
  </table>

<% } %>