easyui 数据库修改部分（基于数据添加逻辑功能修改）

{iconCls:'icon-edit',text:'修改',
                     handler:function(){
                         type="edit";
                         
                         //判断是否选中一条数据
                         var data = $('#dg').datagrid('getSelected');
                         if(data)
                             {
                             //alert(data);
                             //设置主键字段只读
                             $("#sno").textbox({readonly:true});
                             
                             $('#form1').form("reset");
                             
                             $('#form1').form('load',{sno:data.sno,sname:data.sname,ssex:data.ssex,sbirthday:getDate(data.sbirthday),sclass:data.sclass});
                            //没有datebox
                        //     $('#form').form('load',data);
                        
                             $("#saveStu").dialog({title:'修改学生'}).dialog('open');
                             
                             }
                         else
                             {
                             $.messager.show({
                                title:'提示',
                                msg:'请选中一条记录'
                             });
                             }

                    }     
                 },

<div  class="easyui-dialog"   id="saveStu"   style="400px;height:200px;"  title="添加学生"

data-options="{closed:true,modal:true,

buttons:[{text:'保存',iconCls:'icon-save',handler:function(){
$('#form1').form('submit',{
url:'SaveStudentServlet?type='+type,
onSubmit:function(){
var isValid = $(this).form('validate');                
                    if (!isValid){
                        $.messager.show({
                            title:'消息',
                            msg:'数据验证未通过'                        
                        });    
                    }
                return isValid;    
},

success:function(data){
var msg = eval('('+data+')');                    
                    if(!msg.success)
                        {
                        alert(msg.message);
                        }
                        else
                        {
                        $('#dg').datagrid('reload');
                        $.messager.show({title:'提示',msg:msg.message});
                        $('#saveStu').dialog('close');
                        }
                        },
});
}},
{text:'取消',iconCls:'icon-cancel',handler:function(){
$('#saveStu').dialog('close');
}},
]
}"
>

servlet

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        
        request.setCharacterEncoding("UTF-8");
        
        response.setCharacterEncoding("UTF-8");
        response.setContentType("text/html");
        
        String spage = request.getParameter("page");
        String srows = request.getParameter("rows");        
        
        String sort = request.getParameter("sort");
        String order = request.getParameter("order");    
        
        String sname_s = request.getParameter("sname_s");
        if(sname_s!=null){
        sname_s=new String(sname_s.getBytes("ISO-8859-1"),"UTF-8");
        }
        
        String sclass_s = request.getParameter("sclass_s");    
        if(sclass_s!=null){
        sclass_s=new String(sclass_s.getBytes("ISO-8859-1"),"UTF-8");
        }
        System.out.println(sname_s+" "+sclass_s);
        
           
        if(spage!=null&&srows!=null)
        {
        int page =Integer.parseInt(spage);
        int rows =Integer.parseInt(srows);
        //对条件进行打包
        Map<String,String> where = new HashMap<String,String>();
        
        where.put("sname_s", sname_s);
        where.put("sclass_s", sclass_s);
        
        //组合排序语句
        String ls="";
        
        if(sort!=null)
        {
            ls = sort+" "+order;
        }
    
        String json = new StudentService().getPageJSON(page, rows, ls,where);
        
        response.getWriter().println(json);
        }
        else
        {
            response.getWriter().println("{'total':0,'row':[]}" );
        }
                
    }

底层逻辑部分

    //修改数据
    public void update(Student stu)
    {
        init();
        
        se.update(stu);
        
        destroy();
    }

//修改
    public void updateStudent(Student stu)
    {
        new StudentDAO().update(stu);
    }