RequestMapping
轉自:http://blog.csdn.net/kobejayandy/article/details/12690041
簡介:
@RequestMapping
RequestMapping是一個用來處理請求地址映射的注解,可用于類或方法上。用于類上,表示類中的所有響應請求的方法都是以該地址作為父路徑。
RequestMapping注解有六個屬性,下面我們把她分成三類進行說明。
1、 value, method;
value:???? 指定請求的實際地址,指定的地址可以是URI Template 模式(后面將會說明);
method:? 指定請求的method類型, GET、POST、PUT、DELETE等;
2、 consumes,produces;
consumes: 指定處理請求的提交內容類型(Content-Type),例如application/json, text/html;
produces:??? 指定返回的內容類型,僅當request請求頭中的(Accept)類型中包含該指定類型才返回;
3、 params,headers;
params: 指定request中必須包含某些參數值是,才讓該方法處理。
headers: 指定request中必須包含某些指定的header值,才能讓該方法處理請求。
示例:
1、value? / method 示例
默認RequestMapping("....str...")即為value的值;
[java]?view plaincopy
@Controller??
@RequestMapping("/appointments")??
public?class?AppointmentsController?{??
??
????private?final?AppointmentBook?appointmentBook;??
??????
????@Autowired??
????public?AppointmentsController(AppointmentBook?appointmentBook)?{??
????????this.appointmentBook?=?appointmentBook;??
????}??
??
????@RequestMapping(method?=?RequestMethod.GET)??
????public?Map<String,?Appointment>?get()?{??
????????return?appointmentBook.getAppointmentsForToday();??
????}??
??
????@RequestMapping(value="/{day}",?method?=?RequestMethod.GET)??
????public?Map<String,?Appointment>?getForDay(@PathVariable?@DateTimeFormat(iso=ISO.DATE)?Date?day,?Model?model)?{??
????????return?appointmentBook.getAppointmentsForDay(day);??
????}??
??
????@RequestMapping(value="/new",?method?=?RequestMethod.GET)??
????public?AppointmentForm?getNewForm()?{??
????????return?new?AppointmentForm();??
????}??
??
????@RequestMapping(method?=?RequestMethod.POST)??
????public?String?add(@Valid?AppointmentForm?appointment,?BindingResult?result)?{??
????????if?(result.hasErrors())?{??
????????????return?"appointments/new";??
????????}??
????????appointmentBook.addAppointment(appointment);??
????????return?"redirect:/appointments";??
????}??
}??
value的uri值為以下三類:
A) 可以指定為普通的具體值;
B)? 可以指定為含有某變量的一類值(URI Template Patterns with Path Variables);
C) 可以指定為含正則表達式的一類值( URI Template Patterns with Regular Expressions);
example B)
[java]?view plaincopy
@RequestMapping(value="/owners/{ownerId}",?method=RequestMethod.GET)??
public?String?findOwner(@PathVariable?String?ownerId,?Model?model)?{??
??Owner?owner?=?ownerService.findOwner(ownerId);????
??model.addAttribute("owner",?owner);????
??return?"displayOwner";???
}??
example C)
[java]?view plaincopy
@RequestMapping("/spring-web/{symbolicName:[a-z-]+}-{version:\d\.\d\.\d}.{extension:\.[a-z]}")??
??public?void?handle(@PathVariable?String?version,?@PathVariable?String?extension)?{??????
????//?...??
??}??
}??
2 consumes、produces 示例
cousumes的樣例:
[java]?view plaincopy
@Controller??
@RequestMapping(value?=?"/pets",?method?=?RequestMethod.POST,?consumes="application/json")??
public?void?addPet(@RequestBody?Pet?pet,?Model?model)?{??????
????//?implementation?omitted??
}??
方法僅處理request Content-Type為“application/json”類型的請求。
produces的樣例:
[java]?view plaincopy
@Controller??
@RequestMapping(value?=?"/pets/{petId}",?method?=?RequestMethod.GET,?produces="application/json")??
@ResponseBody??
public?Pet?getPet(@PathVariable?String?petId,?Model?model)?{??????
????//?implementation?omitted??
}??
方法僅處理request請求中Accept頭中包含了"application/json"的請求,同時暗示了返回的內容類型為application/json;
3 params、headers 示例
params的樣例:
[java]?view plaincopy
@Controller??
@RequestMapping("/owners/{ownerId}")??
public?class?RelativePathUriTemplateController?{??
??
??@RequestMapping(value?=?"/pets/{petId}",?method?=?RequestMethod.GET,?params="myParam=myValue")??
??public?void?findPet(@PathVariable?String?ownerId,?@PathVariable?String?petId,?Model?model)?{??????
????//?implementation?omitted??
??}??
}??
?僅處理請求中包含了名為“myParam”,值為“myValue”的請求;
headers的樣例:
[java]?view plaincopy
@Controller??
@RequestMapping("/owners/{ownerId}")??
public?class?RelativePathUriTemplateController?{??
??
@RequestMapping(value?=?"/pets",?method?=?RequestMethod.GET,?headers="Referer=http://www.ifeng.com/")??
??public?void?findPet(@PathVariable?String?ownerId,?@PathVariable?String?petId,?Model?model)?{??????
????//?implementation?omitted??
??}??
}??
?僅處理request的header中包含了指定“Refer”請求頭和對應值為“http://www.ifeng.com/”的請求;
轉載于:https://blog.51cto.com/yt0116/1737139
總結
以上是生活随笔為你收集整理的RequestMapping的全部內容,希望文章能夠幫你解決所遇到的問題。
- 上一篇: 字符串_月隐学python第7课
- 下一篇: 字典与集合_月隐学python第8课