spring学习之requestmapping详解
来源:互联网 发布:网络男生悲伤情歌 编辑:程序博客网 时间:2024/05/21 14:50
@RequestMapping
RequestMapping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。
- value,method:
value: 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;
示例:
默认RequestMapping(“….str…”)即为value的值;
@Controller @RequestMapping("/appointments") public class AppointmentsController { private 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);
example B)
@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"; }
C) 可以指定为含正则表达式的一类值( URI Template Patterns with Regular Expressions);
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;
consumes: 指定处理请求的提交内容类型(Content-Type),例如application/json, text/html;
示例(处理方法只处理 request Content-Type 为“application/json”的亲求):
@Controller @RequestMapping(value = "/pets", method = RequestMethod.POST, consumes="application/json") public void addPet(@RequestBody Pet pet, Model model) { // implementation omitted }
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;
示例(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):
@Controller @RequestMapping(value = "/pets/{petId}", method = RequestMethod.GET, produces="application/json") @ResponseBody public Pet getPet(@PathVariable String petId, Model model) { // implementation omitted }
3、 params,headers;
params: 指定request中必须包含某些参数值是,才让该方法处理。
示例( 仅处理请求中包含了名为“myParam”,值为“myValue”的请求):
@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 } }
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( 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):
@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 } }
- spring学习之requestmapping详解
- Spring MVC之@RequestMapping 详解
- Spring MVC之@RequestMapping 详解
- Spring MVC之@RequestMapping 详解
- Spring MVC之@RequestMapping 详解
- Spring MVC之@RequestMapping 详解
- Spring MVC之@RequestMapping 详解
- Spring MVC之@RequestMapping 详解
- Spring MVC之@RequestMapping 详解
- Spring MVC之@RequestMapping 详解
- Spring MVC之@RequestMapping 详解
- Spring MVC之@RequestMapping 详解
- Spring MVC之@RequestMapping 详解
- Spring MVC之@RequestMapping 详解
- Spring MVC之@RequestMapping 详解
- Spring MVC之@RequestMapping 详解
- Spring MVC之@RequestMapping 详解
- Spring MVC之@RequestMapping 详解
- iOS和Android的app界面设计规范
- 关于TabLayout跟ViewPager的使用
- 使用MultipleTheme设置夜间模式跳转时报InflateException: Binary XML file line #1: Binary XML file line #1
- 李洋疯狂C语言之用递归解决李白喝酒问题(二)
- js-三种创建对象方法
- spring学习之requestmapping详解
- 用redis分布式缓存实现
- 图床
- cd命令
- CMake使用教程
- UVA1599-字典序+BFS
- 更改文件夹及子文件的 用户和组别
- SSH框架--登录
- appium服务关键字