@RequestMapping 详解，隔壁都馋哭了

示例：

1、value / method 示例

默认 RequestMapping(“….str…”)即为 value 的值；

@Controller

@RequestMapping("/appointments")

public class AppointmentsController {

private AppointmentBook appointmentBook;

@Autowired

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ic 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 值为以下三类：

A） 可以指定为普通的具体值；

B) 可以指定为含有某变量的一类值(URI Template Patterns with Path Variables)；

C) 可以指定为含正则表达式的一类值( URI Template Patterns with Regular Expressions);

example B)

@RequestMapping(value="/owners/{ownerId}", method=RequestMethod.POST)

public String findOwner(@PathVariable String ownerId, Model model) {

Owner owner = ownerService.findOwner(ownerId);

model.addAttribute("owner", owner);

return "displayOwner";

}

example C)

@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 的样例：

@Controller

@RequestMapping(value = "/pets", method = RequestMethod.POST, consumes="application/json")

public void addPet(@RequestBody Pet pet, Model model) {

// implementation omitted

}

方法仅处理 request Content-Type 为“application/json”类型的请求。

produces 的样例：

@Controller

@RequestMapping(value = "/pets/{petId}", method = RequestMethod.GET, produces="application/json")

@ResponseBody

public Pet getPet(@PathVariable String petId, Model model) {

// implementation omitted

}

方法仅处理 request 请求中 Accept 头中包含了”application/json”的请求，同时暗示了返回的内容类型为 application/json;

3 params、headers 示例

params 的样例：

@Controller

@RequestMapping("/owners/{ownerId}")

public class RelativePathUriTemplateController {