## 1. Get 请求 ### 1.1 以方法的形参接收参数 1.这种方式一般适用参数比较少的情况 ```java @RestController @RequestMapping("/user") @Slf4j public class UserController { @GetMapping("/detail") public Result getUserDetail(String name,String phone) { log.info("name:{}",name); log.info("phone:{}",phone); return Result.success(null); } } ``` ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/b38f79d0b86f4246971c805e9221a009~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=2236\&h=304\&s=99665\&e=png\&b=2b2b2b) 2.参数用 @RequestParam 标注，表示这个参数需要必传，否则会报错。 ```java @RestController @RequestMapping("/user") @Slf4j public class UserController { @GetMapping("/detail") public Result getUserDetail(@RequestParam String name,@RequestParam String phone) { log.info("name:{}",name); log.info("phone:{}",phone); return Result.success(null); } } ``` ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/748b58c760c1443988f9f473ff93a70e~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1330\&h=1024\&s=137994\&e=png\&b=fefefe) ### 1.2 以实体类接收参数 ```java @RestController @RequestMapping("/user") @Slf4j public class UserController { @GetMapping("/detail") public Result getUserDetail(User user) { log.info("name:{}",user.getName()); log.info("phone:{}",user.getPhone()); return Result.success(null); } } ``` ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/c2eacb5a47fe4f7dbf4e1b16c9a37826~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1472\&h=596\&s=80697\&e=png\&b=fefefe) ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/9fa8eea5ab3b44d4bd78fa676f842aad~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=2650\&h=362\&s=90297\&e=png\&b=2b2b2b) > 注：Get 请求以实体类接收参数时，不能用 RequestParam 注解进行标注，因为不支持这样的方式获取参数。 ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/57d6267a8aca48e99b167e87854c4472~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=2582\&h=634\&s=176524\&e=png\&b=2c2c2c) ### 1.3 通过 HttpServletRequest 接收参数 ```java @RestController @RequestMapping("/user") @Slf4j public class UserController { @GetMapping("/detail") public Result getUserDetail(HttpServletRequest request) { String name = request.getParameter("name"); String phone = request.getParameter("phone"); log.info("name:{}",name); log.info("phone:{}",phone); return Result.success(null); } } ``` ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/c2eacb5a47fe4f7dbf4e1b16c9a37826~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1472\&h=596\&s=80697\&e=png\&b=fefefe) ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/29dcc63451084281a3090cdbdfcb1369~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=2644\&h=478\&s=137682\&e=png\&b=2c2c2c) ### 1.4 通过 @PathVariable 注解接收参数 ```java @RestController @RequestMapping("/user") @Slf4j public class UserController { @GetMapping("/detail/{name}/{phone}") public Result getUserDetail(@PathVariable String name,@PathVariable String phone) { log.info("name:{}",name); log.info("phone:{}",phone); return Result.success(null); } } ``` ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/9def50e46c9b41248b02e920eaeec4db~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1618\&h=490\&s=75312\&e=png\&b=fefefe) ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/a7bc656385e34f3c98c722ad9bc8d5bd~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=2596\&h=324\&s=106752\&e=png\&b=2b2b2b) ### 1.5 接收数组参数 ```java @RestController @RequestMapping("/user") @Slf4j public class UserController { @GetMapping("/detail") public Result getUserDetail(String[] names) { Arrays.asList(names).forEach(name->{ System.out.println(name); }); return Result.success(null); } } ``` ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/0d394215a0f247f1b1f0f056f04d6f68~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1626\&h=844\&s=104429\&e=png\&b=fefefe) ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/748f26f8df2e4842937e84b0247308d1~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=2154\&h=368\&s=86731\&e=png\&b=2b2b2b) ### 1.6 接收集合参数 > springboot 接收集合参数，需要用 RequestParam 注解绑定参数，否则会报错！！ ```java @RestController @RequestMapping("/user") @Slf4j public class UserController { @GetMapping("/detail") public Result getUserDetail(@RequestParam List names) { names.forEach(name->{ System.out.println(name); }); return Result.success(null); } } ``` ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/0d394215a0f247f1b1f0f056f04d6f68~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1626\&h=844\&s=104429\&e=png\&b=fefefe) ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/748f26f8df2e4842937e84b0247308d1~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=2154\&h=368\&s=86731\&e=png\&b=2b2b2b) ## 2. Post 请求 ### 2.1 以方法的形参接收参数 ```java @RestController @RequestMapping("/user") @Slf4j public class UserController { @PostMapping("/save") public Result getUserDetail(String name,String phone) { log.info("name:{}",name); log.info("phone:{}",phone); return Result.success(null); } } ``` ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/6c74b8d9f8d04b7fb29e15667a3f1330~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1624\&h=732\&s=99488\&e=png\&b=fefefe) ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/d1f3a4f71db541febf6157b9ceff714a~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=2560\&h=398\&s=120857\&e=png\&b=2b2b2b) > 注：和 Get 请求一样，如果方法形参用 RequestParam 注解标注，表示这个参数需要必传。 ### 2.2 通过 param 提交参数，以实体类接收参数 ```java @RestController @RequestMapping("/user") @Slf4j public class UserController { @PostMapping("/save") public Result getUserDetail(User user) { log.info("name:{}",user.getName()); log.info("phone:{}",user.getPhone()); return Result.success(null); } } ``` ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/9d7d9577c8774333a7d6a7c7f89eed26~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1688\&h=726\&s=104139\&e=png\&b=fefefe) ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/de9809cabb714cd09b73a22821b11f10~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=2656\&h=424\&s=126422\&e=png\&b=2b2b2b) > 注：Post 请求以实体类接收参数时，不能用 RequestParam 注解进行标注，因为不支持这样的方式获取参数。 ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/add84097969c4d0eaf62bb537615f34c~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=2448\&h=1186\&s=281915\&e=png\&b=2c2c2c) ### 2.3 通过 HttpServletRequest 接收参数 ```java @RestController @RequestMapping("/user") @Slf4j public class UserController { @PostMapping("/save") public Result getUserDetail(HttpServletRequest httpServletRequest) { log.info("name:{}",httpServletRequest.getParameter("name")); log.info("phone:{}",httpServletRequest.getParameter("phone")); return Result.success(null); } } ``` ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/9d7d9577c8774333a7d6a7c7f89eed26~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1688\&h=726\&s=104139\&e=png\&b=fefefe) ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/de9809cabb714cd09b73a22821b11f10~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=2656\&h=424\&s=126422\&e=png\&b=2b2b2b) ### 2.4 通过 @PathVariable 注解进行接收 ```java @RestController @RequestMapping("/user") @Slf4j public class UserController { @PostMapping("/save/{name}") public Result getUserDetail(@PathVariable String name) { log.info("name:{}",name); return Result.success(null); } } ``` ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/b968790a08e74182b48dbc04f3d9a0d1~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1626\&h=698\&s=87520\&e=png\&b=fefefe) ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/b4f62bec1f59487aa5be1d9b33f091cf~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=2542\&h=286\&s=85074\&e=png\&b=2b2b2b) ### 2.5 请求体以 form-data 提交参数，以实体类接收参数 form-data 是表单提交的一种方式，比如常见的登录请求。 ```java @RestController @RequestMapping("/user") @Slf4j public class UserController { @PostMapping("/save") public Result getUserDetail(User user) { log.info("name:{}",user.getName()); log.info("phone:{}",user.getPhone()); return Result.success(null); } } ``` ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/85bd74ff9e334c2c940746cba2772a18~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1490\&h=760\&s=104885\&e=png\&b=fefefe) ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/b843d859b2524bae86faaa5ccc2336e9~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1340\&h=258\&s=30930\&e=png\&b=2b2b2b) ### 2.6 请求体以 x-www-form-urlencoded 提交参数，以实体类接收参数 x-www-form-urlencoded 也是表单提交的一种方式，只不过提交的参数被进行了编码，并且转换成了键值对。例如你用form-data 提交的参数： name: 知否君 age: 22 用 x-www-form-urlencoded 提交的参数： name=%E5%BC%A0%E4%B8%89&age=22 ```java @RestController @RequestMapping("/user") @Slf4j public class UserController { @PostMapping("/save") public Result getUserDetail(User user) { log.info("name:{}",user.getName()); log.info("phone:{}",user.getPhone()); return Result.success(null); } } ``` ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/3889483cb47a4047bdaa13f508d887d5~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1506\&h=648\&s=93873\&e=png\&b=fefefe) ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/7436940b4ed24f0d870bfa65e2bd99e2~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1340\&h=258\&s=30930\&e=png\&b=2b2b2b) ### 2.7 通过 @RequestBody 注解接收参数 > 注：RequestBody 注解主要用来接收前端传过来的 body 中 json 格式的参数。 #### 2.7.1 接收实体类参数 ```java @RestController @RequestMapping("/user") @Slf4j public class UserController { @PostMapping("/save") public Result getUserDetail(@RequestBody User user) { log.info("name:{}",user.getName()); log.info("phone:{}",user.getPhone()); return Result.success(null); } } ``` ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/bd0220541407440fb3005265cafef37d~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1448\&h=578\&s=87593\&e=png\&b=fefefe) ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/e6fe34d65768493db90872df11898f42~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=2542\&h=426\&s=131655\&e=png\&b=2c2c2c) #### 2.7.2 接收数组和集合接收数组 ```java @RestController @RequestMapping("/user") @Slf4j public class UserController { @PostMapping("/save") public Result getUserDetail(@RequestBody String[] names) { Arrays.asList(names).forEach(name->{ System.out.println(name); }); return Result.success(null); } } ``` 接收集合 ```java @RestController @RequestMapping("/user") @Slf4j public class UserController { @PostMapping("/save") public Result getUserDetail(@RequestBody List names) { names.forEach(name->{ System.out.println(name); }); return Result.success(null); } } ``` ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/db80b4225a6844d286ac58352abc01c3~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1464\&h=588\&s=82123\&e=png\&b=fdfdfd) ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/9de24abf54c04a778af37fa2f8837ffa~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1888\&h=512\&s=96872\&e=png\&b=2b2b2b) ### 2.8 通过 Map 接收参数 1.以 param 方式传参， RequestParam 注解接收参数 ```java @RestController @RequestMapping("/user") @Slf4j public class UserController { @PostMapping("/save") public Result getUserDetail(@RequestParam Map map) { System.out.println(map); System.out.println(map.get("name")); return Result.success(null); } } ``` ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/3c4eda3b5d2e4ba0b252c71a75bf61ac~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1508\&h=614\&s=85430\&e=png\&b=fefefe) ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/fd373d4f147343c8952ec9a8930bf78f~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1570\&h=204\&s=30714\&e=png\&b=2c2c2c) 2.以 body json 格式传参，RequestBody 注解接收参数 ```java @RestController @RequestMapping("/user") @Slf4j public class UserController { @PostMapping("/save") public Result getUserDetail(@RequestBody Map map) { System.out.println(map); System.out.println(map.get("name")); return Result.success(null); } } ``` ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/a471b508875c4e7a96c8bb64fbdabea5~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1454\&h=474\&s=70892\&e=png\&b=fdfdfd) ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/2b2816c3a1f24251bce34e342df4e5f3~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=2046\&h=372\&s=100290\&e=png\&b=2b2b2b) ### 2.9 RequestBody 接收一个参数 ```java @RestController @RequestMapping("/user") @Slf4j public class UserController { @PostMapping("/save") public Result getUserDetail(@RequestBody String name) { System.out.println(name); return Result.success(null); } } ``` ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/d754dc59450745e580f9fc36eec96f06~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1454\&h=500\&s=68542\&e=png\&b=fdfdfd) ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/888edf1bfaaa4fbf9fa27f214b3e51b2~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1322\&h=250\&s=32807\&e=png\&b=2c2c2c) ## 3. Delete 请求 ### 3.1 以 param 方式传参，以方法形参接收参数 ```java @RestController @RequestMapping("/user") @Slf4j public class UserController { @DeleteMapping("/delete") public Result getUserDetail(@RequestParam String name) { System.out.println(name); return Result.success(null); } } ``` ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/137da98e82314eb89d49afd030c7a70e~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1586\&h=570\&s=75603\&e=png\&b=fefefe) ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/54aaa0ce83ed4bbf960748ad1101c27c~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1380\&h=264\&s=32782\&e=png\&b=2c2c2c) ### 3.2 以 body json 方式传参，以实体类接收参数 > 注：需要用 RequestBody 注解，否则接收的参数为 null ```java @RestController @RequestMapping("/user") @Slf4j public class UserController { @DeleteMapping("/delete") public Result getUserDetail(@RequestBody User user) { System.out.println(user); return Result.success(null); } } ``` ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/8dce440613f3485ea5b24598b7e94902~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1464\&h=518\&s=73645\&e=png\&b=fdfdfd) ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/3e1aa9363fc54ca286a6dd4850a788e0~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=2018\&h=410\&s=111469\&e=png\&b=2c2c2c) ### 3.3 以 body json 方式传参，以 map 接收参数 > 注：需要用 RequestBody 注解，否则接收的参数为 null ```java @RestController @RequestMapping("/user") @Slf4j public class UserController { @DeleteMapping("/delete") public Result getUserDetail(@RequestBody Map map) { System.out.println(map); return Result.success(null); } } ``` ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/8dce440613f3485ea5b24598b7e94902~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1464\&h=518\&s=73645\&e=png\&b=fdfdfd) ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/6887b84e47d648ee9d98b22866d4c545~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=2016\&h=402\&s=121039\&e=png\&b=2b2b2b) ### 3.4 PathVariable 接收参数 ```java @RestController @RequestMapping("/user") @Slf4j public class UserController { @DeleteMapping("/delete/{name}") public Result getUserDetail(@PathVariable String name) { System.out.println(name); return Result.success(null); } } ``` ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/3c92c670facd46c0a02cb73dc5faf538~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1468\&h=392\&s=57895\&e=png\&b=fefefe) ![](https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/cbccc83c977b407daeab99bca6925410~tplv-k3u1fbpfcp-jj-mark:0:0:0:0:q75.image#?w=1624\&h=382\&s=98198\&e=png\&b=2b2b2b)