0x000 概述：將某個http請求對應到某個方法上。 0x001 @RequestMapping：這個註解可以加在某個Controller或某個方法上，如果加在Controller上
將某個#http請求對應到某個方法上
@RequestMapping
這個註解可以加在某個Controller或某個方法上，如果加在Controller上，則這個Controller中的所有路由映射都會加上這個前綴（下面會有栗子），如果加在方法上，則沒有前綴（下面也有栗子）。
@RequestMapping有以下屬性
#value: 請求的URL的路徑
path: 和value一樣
method: 請求的方法
consumes: 允許的媒體類型，也就是Content-Type
# #produces: 對應的媒體類型，也就是Accept
#params: 請求參數
0x002 路由匹配
##添加方法，並新增先寫Controller
，Controller頭部的@RestController將這個控制器標註為Rest控制器：package com.lyxxxx.rest.controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RestController public class HelloController { }登入後複製
@RequestMapping()
public Object hello() {
return "hello";
}說明：上面新增了一個方法，名為hello
，沒有給定任何的屬性，則預設符合所有URL，方法為GET，所以我們可以直接使用GET方式來存取該路由$ curl 127.0.0.1:8080 hello $ curl 127.0.0.1:8080/user hello $ curl 127.0.0.1:8080/user/1 hello登入後複製
@RequestMapping(value = "/hello2")
public Object hello2() {
return "hello2";
}字元模糊匹配說明：上面將value
設定為hello2，所以訪問hello2將會執行hello2方法$ curl 127.0.0.1:8080/hello2 hello2登入後複製
@RequestMapping(value = "/hello3/*")
public Object hello3() {
return "hello3";
}：上面將#單字元模糊匹配value設定為/hello3/*
,*為匹配所有字符，也就是存取hello3下的所有URL都會匹配該防範$ curl 127.0.0.1:8080/hello3/user hello3 curl 127.0.0.1:8080/hello3/1 hello3登入後複製
$ curl 127.0.0.1:8080/hello4/1 hello4
##說明
#：上面將value設定為/hello4/?,
?為符合單一字符，符合hello4/1，但不會匹配hello4/11<div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false">$ curl 127.0.0.1:8080/hello4/1 hello4 $ curl 127.0.0.1:8080/hello4/12 {"timestamp":"2018-07-25T05:29:39.105+0000","status":404,"error":"Not Found","message":"No message available","path":"/hello4/12"}</pre><div class="contentsignin">登入後複製</div></div>
@RequestMapping(value = "/hello5/**")
public Object hello5() {
return "hello5";
}說明：上面將
/hello5/**
,**為符合所有路徑，所以
$ curl 127.0.0.1:8080/hello5 hello5 $ curl 127.0.0.1:8080/hello5/user/1 hello5
多個路徑匹配<div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:js;toolbar:false;">@RequestMapping(value = {"/hello6", "/hello6/1"})
public Object hello6() {
return "hello6";
}</pre><div class="contentsignin">登入後複製</div></div>
$ curl 127.0.0.1:8080/hello6 hello6 $ curl 127.0.0.1:8080/hello6/1 hello6F
讀取配置<div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:js;toolbar:false;">// resources/application.properties
app.name=hello7
// com.lyxxxx.rest.controller.HelloController
@RequestMapping(value = "${app.name}")
public Object hello7() {
return "hello7";
}</pre><div class="contentsignin">登入後複製</div></div>
$ curl 127.0.0.1:8080/hello7 hello7
0x003 方法符合符合要求中的
中的列舉值：
#POST
PUT
#PATCH
package com.lyxxxx.rest.controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class MethodController {
@RequestMapping(path = "method/get", method = RequestMethod.GET)
public Object get() {
return "get";
}
@RequestMapping(path = "method/head", method = RequestMethod.HEAD)
public Object head() {
return "head";
}
@RequestMapping(path = "method/post", method = RequestMethod.POST)
public Object post() {
return "post";
}
@RequestMapping(path = "method/put", method = RequestMethod.PUT)
public Object put() {
return "put";
}
@RequestMapping(path = "method/patch", method = RequestMethod.PATCH)
public Object patch() {
return "patch";
}
@RequestMapping(path = "method/delete", method = RequestMethod.DELETE)
public Object delete() {
return "delete";
}
@RequestMapping(path = "method/options", method = RequestMethod.OPTIONS)
public Object options() {
return "options";
}
@RequestMapping(path = "method/trace", method = RequestMethod.TRACE)
public Object trace() {
return "trace";
}
}$ curl -X GET 127.0.0.1:8080/method/get get $ curl -X POST 127.0.0.1:8080/method/post post $ curl -X DELETE 127.0.0.1:8080/method/delete delete $ curl -X PUT 127.0.0.1:8080/method/put put ...
package com.lyxxxx.rest.controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class ParamsController {
@RequestMapping(path = "/params", params = "userId=1")
public Object params() {
return "params";
}
}$ curl 127.0.0.1:8080/params?userId=1 params
以上是怎麼將某個http請求對應到某個方法上？ SpringBoot入門：URL 映射的詳細內容。更多資訊請關注PHP中文網其他相關文章！
