springmvc @RequestMapping注解的入门配置教程

直接代码喽。

@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";
     }
 }

DispatcherServle

<servlet>
         <servlet-name>dispatcher</servlet-name>
         <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
         <load-on-startup>1</load-on-startup>
     </servlet>
     <servlet-mapping>
         <servlet-name>dispatcher</servlet-name>
         <url-pattern>*.do</url-pattern>
     </servlet-mapping>

/appointments/new.do
映射方法是getNewForm()
/appointments.do 
GET请求映射方法是 get()
POST请求映射方法是add(@Valid AppointmentForm appointment, BindingResult result)
通过参数条件缩小路径映射

@RequestMapping(value = "/path", params="myParam=myValue")
public void add(){...}

http://localhost:8080/DynamicWebProject/hao/hello.do?myParam=myValue
URL中只有存在myParam=myValue参数时才被允许访问路径映射的方法
 

@RequestMapping(value = "/path", method = RequestMethod.POST, headers="content-type=text/*")
public void add(){...}

只有在URL的头信息中包含有content-type=text/*(content-type=text/xml)的POST请求才能访问add()方法

配合@RequestMapping使用的方法或注解
org.springframework.web.context.request.WebRequest或org.springframework.web.context.request.NativeWebRequest。通用请求参数允许访问 request/session属性，到本机的Servlet / Portlet API的。

java.util.Locale 当前请求的区域设置，由解析器提供最具体的语言环境。

java.io.InputStream /java.io.Reader访问请求的内容。这个值是原始的InputStream /Reader ,由Servlet API公开。

java.io.OutputStream /java.io.Writer生成响应的内容。这个值是原始的OutputStream /Writer，由Servlet API公开。

@ PathVariable注明获取URI模板变量的参数。

@ RequestParam注明为获取特定的servlet请求参数的参数。

@ RequestHeader 访问特定的servlet请求的HTTP头的参数。参数值转换为声明的方法的参数类型。

@ RequestBody 访问HTTP请求体参数。参数值转换为所声明的方法的参数类型使用HttpMessageConverters。

HttpEntity <？>访问servlet请求的HTTP头和内容。请求流将被转换为实体采用HttpMessageConverters。

java.util.Map/ org.springframework.ui.Model /org.springframework.ui.ModelMap为丰富的隐含模型，暴露在Web视图

org.springframework.validation.Errors / org.springframework.validation.BindingResult

org.springframework.web.bind.support.SessionStatus

原文地址：http://www.blogjava.net/wmcoo/articles/333428.html

由最代码官方编辑于2016-9-20 10:03:52