Rumah >Java >javaTutorial >怎么将某个http请求映射到某个方法上?SpringBoot入门:URL 映射
0x000 概述:将某个http请求映射到某个方法上。0x001 @RequestMapping:这个注解可以加在某个Controller或者某个方法上,如果加在Controller上
将某个http
请求映射到某个方法上
@RequestMapping
这个注解可以加在某个Controller
或者某个方法上,如果加在Controller
上,则这个Controller
中的所有路由映射都将会加上这个前缀(下面会有栗子),如果加在方法上,则没有前缀(下面也有栗子)。
@RequestMapping
有以下属性
value
: 请求的URL
的路径
path
: 和value
一样
method
: 请求的方法
consumes
: 允许的媒体类型,也就是Content-Type
produces
: 相应的媒体类型,也就是Accept
params
: 请求参数
headers
: 请求头部
首先编写Controller
,Controller
头部的@RestController
将这个控制器标注为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 { }
添加方法,并添加URL
匹配:
@RequestMapping() public Object hello() { return "hello"; }
说明:上面添加了一个方法,名为
hello
,没有给定任何的属性,则默认匹配所有URL
,方法为GET
,所以我们可以直接使用GET
方式来访问该路由$ curl 127.0.0.1:8080 hello $ curl 127.0.0.1:8080/user hello $ curl 127.0.0.1:8080/user/1 hello
精确匹配
@RequestMapping(value = "/hello2") public Object hello2() { return "hello2"; }
说明:上面将
value
设置为hello2
,所以访问hello2
将会执行hello2
方法$ curl 127.0.0.1:8080/hello2 hello2
字符模糊匹配
@RequestMapping(value = "/hello3/*") public Object hello3() { return "hello3"; }
说明:上面将
value
设置为/hello3/*
,*
为匹配所有字符,也就是访问hello3
下的所有URL
都将匹配该防范$ curl 127.0.0.1:8080/hello3/user hello3 curl 127.0.0.1:8080/hello3/1 hello3
单字符模糊匹配
$ curl 127.0.0.1:8080/hello4/1 hello4
说明:上面将
value
设置为/hello4/?
,?
为匹配单个字符,匹配hello4/1
,但是不会匹配hello4/11
$ 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"}
全路径模糊匹配
@RequestMapping(value = "/hello5/**") public Object hello5() { return "hello5"; }
说明:上面将
value
设置为/hello5/**
,**
为匹配所有路径,所以hello5
下面的所有路由都将匹配这个方法$ curl 127.0.0.1:8080/hello5 hello5 $ curl 127.0.0.1:8080/hello5/user/1 hello5
多个路径匹配
@RequestMapping(value = {"/hello6", "/hello6/1"}) public Object hello6() { return "hello6"; }
$ curl 127.0.0.1:8080/hello6 hello6 $ curl 127.0.0.1:8080/hello6/1 hello6F
读取配置
// resources/application.properties app.name=hello7 // com.lyxxxx.rest.controller.HelloController @RequestMapping(value = "${app.name}") public Object hello7() { return "hello7"; }
$ curl 127.0.0.1:8080/hello7 hello7
匹配请求中的method
,写在RequestMethod
中的枚举值:
GET
HEAD
POST
PUT
PATCH
DELETE
OPTIONS
TRACE
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 ...
除了可以匹配URL
和method
之外,还可以匹配params
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
以上参考数据:《Spring Boot2精髓 从构建小系统到架构分部署大系统》
相关文章:
相关视频:
Atas ialah kandungan terperinci 怎么将某个http请求映射到某个方法上?SpringBoot入门:URL 映射. Untuk maklumat lanjut, sila ikut artikel berkaitan lain di laman web China PHP!