使用Spring 3.1。我有一个填充存储在数据库中的POJO的表单。然而,这也POJO中有一个又一个POJO的例子:弹簧窗体未加载用正确的数据选择
class Job {
private id;
private Filter filter;
//getters and setters
}
和过滤器类:
class Filter {
private id;
private name;
//getters and setters
}
使填充工作对象,我试图显示过滤器的形式选择对象中的对象。所有这一部分似乎都能正常工作。当我尝试编辑已有Filter的Job对象时,问题就出现了。选择对象不会自动将其自身设置为与作业关联的相应Filter对象。想知道如果有人能让我知道我搞砸了什么。下面是JSP:
<%@ taglib prefix="sf" uri="http://www.springframework.org/tags/form"%>
<%@ taglib uri="http://www.springframework.org/tags" prefix="s"%>
<div align="center">
<s:url value="/job" var="jobPost_url"/>
<s:url value="/job/provData" var="provData_url"/>
<sf:form method="POST" modelAttribute="job" dojoType="dijit.form.Form" action="${jobPost_url}">
<script type="dojo/method" event="onSubmit">
if (!this.validate()) {
return false;
}
return true;
</script>
<sf:hidden path="id" />
<table>
<tr><td align="right">Customer:</td><td>
<sf:input path="customer" dojoType="dijit.form.ValidationTextBox" trim="true" required="true"/><br/>
<sf:errors path="customer" cssClass="error"/>
</td></tr>
<tr><td align="right">Project:</td><td>
<sf:input path="project" dojoType="dijit.form.ValidationTextBox" trim="true" required="true"/><br/>
<sf:errors path="project" cssClass="error"/>
</td></tr>
<tr><td align="right">Date:</td><td>
<sf:input path="date" dojoType="dijit.form.DateTextBox" required="true"
constraints="{datePattern:'MMM d, y'}" /><br/>
<sf:errors path="date" cssClass="error"/>
</td></tr>
<tr><td align="right">Filter:</td><td><sf:select id="filter" path="filter" items="${filters}" itemValue="id"
itemLabel="programName"/></td>
</tr>
<tr><td colspan="2" align="right">
<button dojoType="dijit.form.Button" type="submit">Submit</button>
<button dojoType="dijit.form.Button" id="testButton">Test</button>
</td></tr>
</table>
</sf:form>
</div>
这里是控制器(或者至少相关部分):
@Controller
public class JobController {
@Autowired
private JobService jobService;
@Autowired
private ProvisionService provisionService;
@InitBinder
protected void initBinder(WebDataBinder binder) {
binder.registerCustomEditor(Date.class, new DatePropertyEditor());
binder.registerCustomEditor(Provision.class, new ProvisionEditor(provisionService));
}
@ModelAttribute("filters")
@RequestMapping(value="/job", method=RequestMethod.GET)
public List<Provision> showJobForm(Model model) {
model.addAttribute(new Job());
return provisionService.getAll();
}
@RequestMapping(value="/job", method=RequestMethod.POST)
public String submitJobForm(@Valid Job job, BindingResult bindingResult) {
if(bindingResult.hasErrors())
return "job";
job.setStatus("Running");
JobManager.AddJob(job);
jobService.save(job);
return "redirect:/";
}
@RequestMapping(value="/job/edit", method=RequestMethod.POST)
public String editJob(@RequestParam("jobHiddenList") String list, Model model) {
log.info("Edit List: " + list);
Job job = jobService.getById(Long.valueOf(list.trim()));
model.addAttribute("job", job);
model.addAttribute("filters", provisionService.getAll());
return "job";
}
}
,需要从选择的ID转换条文规定的ProvisionEditor:
public class ProvisionEditor extends PropertyEditorSupport {
private ProvisionService provisionService;
public ProvisionEditor(ProvisionService provisionService) {
this.provisionService = provisionService;
}
public void setAsText(String value) {
long provisionId = Long.parseLong(value);
Provision p = provisionService.getById(provisionId);
setValue(p);
}
}
所以,正如我所说,创建新的作业时,事情工作正常。条款列表被加载到select中,所有内容都被正确分配并正确存储在数据库中。但是,当用户稍后选择提供并进行编辑时,它会将它们带到相同的表单中,并且所有数据均正确加载,但Provision选择除外。它载入条款列表,但不会选择正确的条目。任何想法如何解决这个问题?谢谢。
虽然这是从列表对象中填充选择框的替代方法,但它实际上并未解决我的问题。基于加载到表单中的对象,选择框不会自动设置为正确的选项。另外,我在jsp中使用的解决方案更加清晰,因此我不确定为什么我会使用解决方案,除非它实际解决了我遇到的问题。不过谢谢。 – cardician