我正在使用jtable http://jtable.org/在我的项目中。 jTable 是一个 jQuery 插件，用于创建基于 AJAX 的 CRUD 表，无需编写 HTML 或 Javascript。
http://i62.tinypic.com/3461eo3.jpg
上述表单的jtable代码是
HTML 代码:
<div id="StudentTableContainer"></div>
JavaScript 代码:
<script type="text/javascript">
$(document).ready(function () {
$('#StudentTableContainer').jtable({
title: 'Student List',
paging: true,
pageSize: 10,
sorting: true,
defaultSorting: 'Name ASC',
actions: {
listAction: '/Demo/StudentList',
deleteAction: '/Demo/DeleteStudent',
updateAction: '/Demo/UpdateStudent',
createAction: '/Demo/CreateStudent'
},
fields: {
StudentId: {
key: true,
create: false,
edit: false,
list: false
},
Name: {
title: 'Name',
width: '30%'
},
EmailAddress: {
title: 'Email address',
list: false
},
Password: {
title: 'User Password',
type: 'password',
list: false
},
Gender: {
title: 'Gender',
options: { 'M': 'Male', 'F': 'Female' },
list: false
},
ContinentalId: {
title: 'Continental',
options: '/Demo/GetContinentalOptions',
list: false
},
CountryId: {
title: 'Country',
dependsOn: 'ContinentalId', //Countries depends on continentals. Thus, jTable builds cascade dropdowns!
options: function (data) {
if (data.source == 'list') {
//Return url of all countries for optimization.
//This method is called for each row on the table and jTable caches options based on this url.
return '/Demo/GetCountryOptions?continentalId=0';
}
//This code runs when user opens edit/create form or changes continental combobox on an edit/create form.
//data.source == 'edit' || data.source == 'create'
return '/Demo/GetCountryOptions?continentalId=' + data.dependedValues.ContinentalId;
},
list: false
},
CityId: {
title: 'City',
width: '30%',
dependsOn: 'CountryId', //Cities depends on countries. Thus, jTable builds cascade dropdowns!
options: function (data) {
if (data.source == 'list') {
//Return url of all cities for optimization.
//This method is called for each row on the table and jTable caches options based on this url.
return '/Demo/GetCityOptions?countryId=0';
}
//This code runs when user opens edit/create form or changes country combobox on an edit/create form.
//data.source == 'edit' || data.source == 'create'
return '/Demo/GetCityOptions?countryId=' + data.dependedValues.CountryId;
}
},
BirthDate: {
title: 'Birth date',
type: 'date',
displayFormat: 'yy-mm-dd',
list: false
},
Education: {
title: 'Education',
list: false,
type: 'radiobutton',
options: [
{ Value: '1', DisplayText: 'Primary school' },
{ Value: '2', DisplayText: 'High school' },
{ Value: '3', DisplayText: 'University' }
]
},
About: {
title: 'About this person',
type: 'textarea',
list: false
},
IsActive: {
title: 'Status',
width: '15%',
type: 'checkbox',
values: { 'false': 'Passive', 'true': 'Active' },
defaultValue: 'true'
},
RecordDate: {
title: 'Record date',
width: '25%',
type: 'date',
displayFormat: 'yy-mm-dd',
create: false,
edit: false,
sorting: false //This column is not sortable!
}
}
});
//Load student list from server
$('#StudentTableContainer').jtable('load');
});
</script>
我想在我的项目中有一个下拉菜单，它应该通过 struts2 操作类从数据库获取值。
与上面的演示代码一样，可以通过 struts2 操作类从数据库访问大陆列表(使用 URL 模式 /Demo/GetContinentalOptions
由于jtable只能理解json，所以请指导我应该在Struts2 Action类和Struts.xml中写什么
注意:在示例代码中，您甚至可以对下拉值进行硬编码
最佳答案
您可以使用以下操作填充 json 字段。您还需要一个convention plugin使用注释。要使用 json 结果，您需要 json plugin .
@Action(value="GetContinentalOptions", results=@Result(type="json", params = {"root", "map"}))
public class ContinentalOptionsAction extends ActionSupport {
Map<String, String> map=new HashMap<>();
public Map<String, String> getMap() {
return map;
}
@Override
public String execute() throws Exception {
map.put("1", "Asia");
map.put("2", "America");
map.put("3", "Europe");
map.put("4", "Africa");
return SUCCESS;
}
}
在选项函数中
var options = [];
$.ajax({ //get from server
url: '<s:url action="GetContinentalOptions"/>',
dataType: 'json',
success: function (data) {
options = data;
}
});
return options;
编辑:
如果没有约定插件，您应该在 struts.xml 中编写操作配置
<action name="GetContinentalOptions" class="com.action.ContinentalOptionsAction">
<result type="json">
<param name="root" value="map"/>
</result>
</action>
关于javascript - 通过 Struts 2 操作类从数据库填充下拉列表(使用 jtable)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/24506509/