我即将编写一个Spring MVC Controller来提供/接收HTML表单和JSON。最好的方法似乎是使用RESTful控制器,但作为我写的第一个我想做的正确!
是否有可能有一个方法返回一个视图,如果它是一个HTML请求,则返回由InternalResourceViewResolver呈现的视图,或者如果它是一个ajax请求,则返回一个呈现为JSON的实体?
同样适用于更新,您是否可以编写单个控制器方法,该方法将接受从传入JSON转换的对象或HTML表单中的@Valid对象,具体取决于内容类型?
在我看来你必须能够,否则为什么使用sf taglib表单元素支持HTML表单中的DELETE和PUT?似乎无法找到解释如何在任何地方做到这一点!
干杯! NFV
答案 0 :(得分:1)
我会放手一搏。
以下是我在Configuration
课程中的内容:
@Bean(name = "viewResolver")
public ContentNegotiatingViewResolver viewResolver() {
final ContentNegotiatingViewResolver contentNegotiatingViewResolver = new ContentNegotiatingViewResolver();
contentNegotiatingViewResolver.setOrder(1);
contentNegotiatingViewResolver.setFavorPathExtension(true);
contentNegotiatingViewResolver.setFavorParameter(true);
contentNegotiatingViewResolver.setIgnoreAcceptHeader(false);
final Map<String, String> mediaTypes = new HashMap<String, String>();
mediaTypes.put("json", "application/x-json");
mediaTypes.put("json", "text/json");
mediaTypes.put("json", "text/x-json");
mediaTypes.put("json", "application/json");
mediaTypes.put("xml", "text/xml");
mediaTypes.put("xml", "application/xml");
contentNegotiatingViewResolver.setMediaTypes(mediaTypes);
final List<View> defaultViews = new ArrayList<View>();
defaultViews.add(jsonView());
defaultViews.add(xmlView());
contentNegotiatingViewResolver.setDefaultViews(defaultViews);
return contentNegotiatingViewResolver;
}
@Bean(name = "xStreamMarshaller")
public XStreamMarshaller xStreamMarshaller() {
return new XStreamMarshaller();
}
@Bean(name = "xmlView")
public MarshallingView xmlView() {
final MarshallingView marshallingView = new MarshallingView(xStreamMarshaller());
marshallingView.setContentType("application/xml");
return marshallingView;
}
@Bean(name = "jsonView")
public MappingJacksonJsonView jsonView() {
return new MappingJacksonJsonView();
}
以下是Controller
中的内容。
@RequestMapping(value = { "/pets" }, method = RequestMethod.GET)
public String list(Model model) {
model.addAttribute("pets", petRepository.findAll());
return "pets/list";
}
@RequestMapping(value = { "/pets" }, method = RequestMethod.POST)
public String create(@Valid @RequestBody Pet pet, Model model) {
petRepository.save(pet);
return "redirect:pets/read/" + pet.getId();
}
@RequestMapping(value = { "/pets/{petId}" }, method = RequestMethod.GET)
public String read(@PathVariable Integer petId, Model model) {
model.addAttribute("pet", petRepository.findOne(petId));
return "pets/read";
}
@RequestMapping(value = { "/pets" }, method = RequestMethod.PUT)
public String update(@Valid @RequestBody Pet pet, Model model) {
petRepository.save(pet);
return "redirect:pets/read/" + pet.getId();
}
@RequestMapping(value = { "/pets/{orderId}" }, method = RequestMethod.DELETE)
public void delete(@PathVariable Integer petId, Model model) {
petRepository.delete(petId);
}
根据我的经验,您可以将HTML表单或JSON对象作为@RequestBody
提交。试一试。
答案 1 :(得分:0)
这肯定是可能的,但我不明白为什么那会有用。
在我的操作中,应该为您需要的每个动作创建一个控制器方法,使控制器处理2种不同类型的输入将使该控制器方法随着时间的推移而变得复杂。
这样做的方法是使用像这样的@RequestMapping注释中的消耗,然后你编写2个方法,每个方法都会监视它的输入。
@RequestMapping(value = "/pets", method = RequestMethod.POST, consumes="application/json");