通过配置JsonConfig过滤有可能引起循环的字段,如果不这样，根据hibernate的原则会不断的级联查询.*************************************Action******************************************************1.对象。JsonConfig jsonConfig = new JsonConfig();jsonConfig.setExcludes( new String[]{ "creator","module","testPoints","testProcesses","highLevelRequirements","lowLevelRequirements"} );String result = JSONObject.fromObject( testCase对象,jsonConfig).toString();2.List数组JsonConfig jsonConfig = new JsonConfig();jsonConfig.setExcludes( new String[]{ "creator","lowLevelRequirements"} );JSONArray lineitemArray = JSONArray.fromObject( testCases集合List,jsonConfig);String result = JSONArray.fromObject(lineitemArray).toString();3.Map对象Map map = new HashMap();JsonConfig jsonConfig = new JsonConfig();jsonConfig.setExcludes( new String[]{ "creator",jsonConfig);map.put("testCases",lineitemArray);String result = JSONObject.fromObject( map对象 ).toString();************************************struts.xml*******************************************************<package name="ajax" extends="json-default" namespace="/ajax">.......... <action name="childrenAjax" class="**********.AssociationBaseAction" method="getChildren"> <result name="success" type="json"> <param name="root">result</param> </result> </action>..........</package>***************************************javascript****************************************************1.对象。$.ajax({type: "POST",url: "ajax/oneAjax.html",dataType: "json",data: "targetId=" + val,success: function(result){var json=eval("("+ result + ")");$('#selectedResult').append( "<div id=" + json.id +"><input type='checkBox' name='selected' value='" + json.id + "'>"+ json.id + " : " + json.name +"</div>" );}});2.List数组$.ajax({type: "POST",url: "ajax/childrenAjax.html",data: url,error: function(){alert("<fmt:message key='errors.msg'/>");},success: function(result){var org1=eval("("+ result + ")"); for(var i=0;i<org1.length;i++){ menuTree.add(org1[i].id,ID,org1[i].id + " : " + org1[i].name); } }});3.Map对象$.ajax({type: "POST",url: "ajax/associationAjax.html",data: "associationObjectIds=" + idString (),success: function(result){var json=eval("("+ result + ")");var dataItems = json.dataItems;var testCases = json.testCases;var sysReqs = json.sysReqs;var hlrReqs = json.hlrReqs;var llrReqs = json.llrReqs;var funcInfos = json.funcInfos;.....................................................if (testCases.length != 0){ $('#testCaseDiv').empty(); var url = ""; for(var i =0;i<testCases.length;i++){ url = url + "<div id='testCaseDiv" + i + "' style='height:30px;overflow:hidden;'>"; url = url + "<table width=100% border=1 cellspacing=0 cellpadding=1 bordercolor=ffffff bordercolordark=#ffffff bordercolorlight=B9B9B9>"; url = url + "<tr align=center>"; url = url + "<td width=20% height=28 bgcolor=#EFEFEF><fmt:message key='summary.html.testCase.Id'/></td>"; url = url + "<td width=30% height=28 align=left>"; url = url + testCases[i].id + "&nbsp;"; url = url + "</td>"; url = url + "<td width=20% height=28 bgcolor=#EFEFEF><fmt:message key='summary.html.testCase.creator'/></td>"; url = url + "<td width=30% height=28 align=left >"; url = url + "<span style='float:left' id='testCaseSpan" + i + ".creator'>" + testCases[i].creatorName + "</span>"; url = url + "<span style='float:right' id='testCaseSpan" + i + "' onclick=shoppingcat('testCaseDiv" + i + "','testCaseSpan" + i + "') title=open><img src='./images/down.png'/></span>"; url = url + "&nbsp;"; url = url + "</td>"; url = url + "</tr>"; url = url + "<tr align=center>"; url = url + "<td width=20% height=28 bgcolor=#EFEFEF><fmt:message key='summary.html.testCase.name'/></td>"; url = url + "<td colspan=3 height=28 align=left><span id='testCaseSpan" + i + ".name'>" + testCases[i].name + "</span>&nbsp;</td>"; url = url + "</tr>"; url = url + "</tr>"; url = url + "<tr align=center>"; url = url + "<td width=20% height=60 bgcolor=#EFEFEF><fmt:message key='summary.html.testCase.description'/></td>"; url = url + "<td width=80% height=60 colspan=3 align=left ><span id='testCaseSpan" + i + ".description'>" + testCases[i].description + "</span>"; url = url + "</td>"; url = url + "</tr>"; url = url + "</table>"; url = url + "</div>"; } $('#testCaseDiv').append(url); }...........................................}});