网站备案的幕布,网站建设程序制作,网页设计基础课程介绍,企业做网站维护价格转自#xff1a;http://blog.csdn.net/kobejayandy/article/details/12690041 简介#xff1a;RequestMappingRequestMapping是一个用来处理请求地址映射的注解#xff0c;可用于类或方法上。用于类上#xff0c;表示类中的所有响应请求的方法都是以该地址作为父路径。Requ… 转自http://blog.csdn.net/kobejayandy/article/details/12690041 简介RequestMappingRequestMapping是一个用来处理请求地址映射的注解可用于类或方法上。用于类上表示类中的所有响应请求的方法都是以该地址作为父路径。RequestMapping注解有六个属性下面我们把她分成三类进行说明。1、 value methodvalue 指定请求的实际地址指定的地址可以是URI Template 模式后面将会说明method 指定请求的method类型 GET、POST、PUT、DELETE等2、 consumesproducesconsumes 指定处理请求的提交内容类型Content-Type例如application/json, text/html;produces: 指定返回的内容类型仅当request请求头中的(Accept)类型中包含该指定类型才返回3、 paramsheadersparams 指定request中必须包含某些参数值是才让该方法处理。headers 指定request中必须包含某些指定的header值才能让该方法处理请求。示例1、value / method 示例默认RequestMapping(....str...)即为value的值[java] view plaincopyController RequestMapping(/appointments) public class AppointmentsController { private final AppointmentBook appointmentBook; Autowired public AppointmentsController(AppointmentBook appointmentBook) { this.appointmentBook appointmentBook; } RequestMapping(method RequestMethod.GET) public MapString, Appointment get() { return appointmentBook.getAppointmentsForToday(); } RequestMapping(value/{day}, method RequestMethod.GET) public MapString, Appointment getForDay(PathVariable DateTimeFormat(isoISO.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)[java] view plaincopyRequestMapping(value/owners/{ownerId}, methodRequestMethod.GET) public String findOwner(PathVariable String ownerId, Model model) { Owner owner ownerService.findOwner(ownerId); model.addAttribute(owner, owner); return displayOwner; } example C)[java] view plaincopyRequestMapping(/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[java] view plaincopyController RequestMapping(value /pets, method RequestMethod.POST, consumesapplication/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[java] view plaincopyController RequestMapping(value /pets/{petId}, method RequestMethod.GET, producesapplication/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[java] view plaincopyController RequestMapping(/owners/{ownerId}) public class RelativePathUriTemplateController { RequestMapping(value /pets/{petId}, method RequestMethod.GET, paramsmyParammyValue) public void findPet(PathVariable String ownerId, PathVariable String petId, Model model) { // implementation omitted } } 仅处理请求中包含了名为“myParam”值为“myValue”的请求headers的样例[java] view plaincopyController RequestMapping(/owners/{ownerId}) public class RelativePathUriTemplateController { RequestMapping(value /pets, method RequestMethod.GET, headersRefererhttp://www.ifeng.com/) public void findPet(PathVariable String ownerId, PathVariable String petId, Model model) { // implementation omitted } } 仅处理request的header中包含了指定“Refer”请求头和对应值为“http://www.ifeng.com/”的请求 转载于:https://blog.51cto.com/yt0116/1737139
