Spring MVC：处理时间表中的值-多个对象
问题内容：
我正在开发时间表/ actiontracker应用程序。我正在使用Spring MVC。这是我目前的情况：
我得到了所有任务的表格。在这些任务旁边，有七个文本框（显示接下来七天的小时数）。用户必须能够保存任务（和小时）。我不太确定如何将这些结果发送到控制器。它包含对象列表。比方说…
TaskID - Taskname - D1 - D2 - D3 ...
1 Hello 5 3 2
2 Bai 4 2 1
3 I'm back 3 4 3
它应该发送回任务对象列表，因此我可以插入/更新/删除时间记录。
任何想法如何做到这一点？
问题答案：
这对我有用，希望对您有所帮助！
控制者
@Controller
public class ExampleController {
private Timesheet timesheet;
public ExampleController() {
List<Task> tasks = new ArrayList<Task>();
tasks.add(new Task(1, "Hello", 0, 0, 0, 0, 0, 0, 0));
tasks.add(new Task(2, "Bai", 0, 0, 0, 0, 0, 0, 0));
tasks.add(new Task(3, "I'm back", 0, 0, 0, 0, 0, 0, 0));
this.timesheet = new Timesheet(tasks);
}
@RequestMapping(value = "/timesheet.do", method = RequestMethod.GET)
public ModelAndView displayTimeSheet() {
return new ModelAndView("timesheet", "timesheet", timesheet);
}
@RequestMapping(value = "/timesheet.do", method = RequestMethod.POST)
public ModelAndView updateTimeSheet(@ModelAttribute("timesheet") Timesheet timesheet) {
this.timesheet = timesheet;
return new ModelAndView("timesheet", "timesheet", timesheet);
}
}
JSP页面
<form:form commandName="timesheet">
<table>
<tr>
<th>TaskID</th>
<th>Taskname</th>
<th>D1</th>
<th>D2</th>
<th>D3</th>
<th>D4</th>
<th>D5</th>
<th>D6</th>
<th>D7</th>
</tr>
<c:forEach items="${timesheet.tasks}" var="task" varStatus="tasksRow">
<tr>
<td>
<form:hidden path="tasks[${tasksRow.index}].id"/>
<c:out value="${timesheet.tasks[tasksRow.index].id}"/>
</td>
<td>
<form:hidden path="tasks[${tasksRow.index}].name"/>
<c:out value="${timesheet.tasks[tasksRow.index].name}"/>
</td>
<td>
<form:input path="tasks[${tasksRow.index}].day1hours"/>
</td>
<td>
<form:input path="tasks[${tasksRow.index}].day2hours"/>
</td>
<td>
<form:input path="tasks[${tasksRow.index}].day3hours"/>
</td>
<td>
<form:input path="tasks[${tasksRow.index}].day4hours"/>
</td>
<td>
<form:input path="tasks[${tasksRow.index}].day5hours"/>
</td>
<td>
<form:input path="tasks[${tasksRow.index}].day6hours"/>
</td>
<td>
<form:input path="tasks[${tasksRow.index}].day7hours"/>
</td>
</tr>
</c:forEach>
</table>
<input type="submit"/>
</form:form>
模型类
public class Timesheet {
private List<Task> tasks;
public class Task {
private int id;
private String name;
private int day1hours;
private int day2hours;
private int day3hours;
private int day4hours;
private int day5hours;
private int day6hours;
private int day7hours;
您可以在此处下载整个示例项目：
http://www.bitsandbytecode.com/ftp/spring-mvc-multi-record-
form.zip
