struts2.1.8 +jquery easy ui，datagird的不到数据

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struts2.1.8 +jquery easy ui，datagird的不到数据5

环境struts2.1.8，用自带的那个struts2-json-plugin-2.1.8.1.jar,jso页面调试时发现可以得到action里的json对象，但就是jquery easy ui的datagird 里通过url访问都没执行action,直接跳到input 对应的页面，设了s:fielderror查看了下，说返回的rows没值，验证错误，怎么回事，jsp里没有输入啊
action代码



@Controller
// 声明此类为控制层的类,且为prototype模式调用
@Scope("prototype")
@ParentPackage("json-default")
@Results( {

		@Result(name = "success",type = "json"),
	 	 @Result(name = "input",location = "/product/productUnitManage.jsp") })
public class ProdUnitAction extends ActionSupport {

	private static final long serialVersionUID = -6595716080263610502L;
 
	private ScmProdUnit scmProdUnit ;
	private List<ScmProdUnit> rows =new ArrayList<ScmProdUnit>();;
	private int page;
	private int total;

	@Resource
	private ProdUnitService prodUnitService;

	public String save() throws Exception {
		this.prodUnitService.save(this.scmProdUnit);
		return "save";
	}

	public String update() throws Exception {
		this.prodUnitService.update(this.scmProdUnit);
		return "update";
	}

	public String delete() throws Exception {
		this.prodUnitService.delete(scmProdUnit);
		return "delete";
	}

	public String querybyID() throws Exception {
		scmProdUnit = prodUnitService.findById(ScmProdUnit.class, scmProdUnit
				.getId());
		return "item";
	}

	//@Action(value="querybyBuilde",results={@Result(type="json",name="success")})  
	public String querybyBuilde() throws Exception {	
		System.err.println("111111");
		StringBuffer sql = new StringBuffer();

		sql.append("from ScmProdUnit where 1=1 ");
	
		this.setRows(prodUnitService.findByConsion(sql.toString()));
//		this.setTotal(rows.size());
		System.err.println("2222222");

        return SUCCESS;


	}
	@JSON(serialize = false) 
	public ScmProdUnit getScmProdUnit() {
		return scmProdUnit;
	}

	public void setScmProdUnit(ScmProdUnit scmProdUnit) {
		this.scmProdUnit = scmProdUnit;
	}


	public List<ScmProdUnit> getRows() {
		return rows;
	}

	public void setRows(List<ScmProdUnit> rows) {
		this.rows = rows;
	}

	public int getTotal() {
		return total;
	}

	public void setTotal(int total) {
		this.total = total;
	}

	public int getPage() {
		return page;
	}

	public void setPage(int page) {
		this.page = page;
	}

}

jsp页面代码

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
	<head>

		<title>test</title>
		<meta http-equiv="pragma" content="no-cache">
		<meta http-equiv="cache-control" content="no-cache">
		<meta http-equiv="expires" content="0">

		<!--  	<link rel="stylesheet" type="text/css" href="../_main.css" />-->
		<link rel="stylesheet" type="text/css" href="../js/themes/default/easyui.css">
		<link rel="stylesheet" type="text/css" href="../js/themes/icon.css">
		<script type="text/javascript" src="../js/jquery-1.4.2.min.js"></script>
		<script type="text/javascript" src="../js/jquery.easyui.min.js"></script>
		<script type="text/javascript" src="../js/locale/easyui-lang-zh_CN.js"></script>	
	<script>
  	 
	 $(function(){
	$('#datalist').datagrid({
		title:'单位列表',   
	    iconCls:'icon-ok', 
	    nowrap: false,  //是否只显示一行，即文本过多是否省略部分。
	    striped: true,  //隔行变色
	    singleSelect:true,  
	    url:'prod-unit!querybyBuilde.action',  
	    pagination:true,  
	    rownumbers: true,
	    loadMsg:'数据加载中请稍后……',
	    columns:[[   
	        {field:'itemid',checkbox:true},   
	        {field:'code',title:'单位编码',width:$(this).width()*0.4,align:'center'},   
	        {field:'name',title:'单位名称',width:$(this).width()*0.6,align:'center'}	    
     ]], 	    
	    toolbar: [{
            text: '添加',
            iconCls: 'icon-add',
            handler: function() {
            alert('添加数据')
            }
        }, '-', {
            text: '保存',
            iconCls: 'icon-save',
            handler: function() {
            alert('保存数据')
            }
        }]		
		});	
	});
	 

	function getjsontest()
	{
		$.post("prod-unit!querybyBuilde.action",
			{			
			},function(returnData,status)
			{
			if("success" == status)
				{
				alert("11111");
				//var dataa= eval('('+returnData+')'); 
				//alert(returnData.length);
			alert(returnData);
								}
			},"json"
		);
	} 
		 
	
</script>
</head>
	<body>
		 <form id="myForm" method="post">
		 
			<fieldset>
				<legend>
					test
				</legend>
				<table width="100%" border="0" cellpadding="1" cellspacing="4"
					class="tableStyle">
					
					<tr align="center">
						<td >
							<input name="btnQuery" type="button" onClick="getjsontest()"
								class="button" value="查 询">							
						</td>
					</tr>
				</table>
			</fieldset>


			<table id="datalist"></table>

<div id="result"></div>


<div style="color:red">
    <s:fielderror />
</div>

	</form>
		 

	</body>
</html>

jsp页面执行查询按钮，firebug里可以看到action返回数据
{"code":null,"name":null,"page":0,"rows":[{"code":"xiang","id":1,"name":"箱","remark":null},{"code":"ping","id":2,"name":"瓶","remark":null},{"code":"he","id":3,"name":"盒","remark":null}],"total":0}
但刚载入页面的时候，
$(function(){
$('#datalist').datagrid({.....里这一段，url里设定的地址根本就没执行到action里面的方法，

<div style="color:red">
<s:fielderror />
</div>
调试时说 Invalid field value for field rows，action方法没执行当然为空了，它直接转到result里的input了。现在纳闷就是为什么会转，我jsp里只是显示一个datagrid,别的什么也没有啊，本来以为js有问题，瞅半天也没发现啊，什么原因啊？？？？？？？

又试了试，发现action继承了actionSuppoet后有上面问题，去掉actionSuppoet就可以了，估计是actionSuppoet里校验出了问题，easyui的datagrid传给action的rows是int类型，但action定义了成了list,所以报类型转换错误，可这个grid插件得到返回的rows数据类型是json对象里的list,一种解决办法去掉变量rows,直接jsonObject里吧list给"rows"这个key,但我不想这样做，那应该怎么改啊？

Java综合