1、Get请求1.1 方法形参接收参数这种方式一般适用参数比较少的情况并且前后端参数名称必须保持一致RestControllerRequestMapping(“/user”)Slf4jpublic class DemoController {GetMapping(/query) public void getStudent(String name,String age) { log.info(name:{},name); log.info(age:{},age); }}参数用 RequestParam 标注使用value属性指定参数名required属性表示这个参数是否必传RestControllerRequestMapping(“/user”)Slf4jpublic class DemoController {GetMapping(/query) public void getStudent(RequestParam(value name, required false) String name, RequestParam(value age, required false) String age) { log.info(name:{},name); log.info(age:{},age); }}1.2 实体类接收参数注意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。RestController RequestMapping(/demo) Slf4j public class DemoController { GetMapping(/query) public void getStudent(Student student) { log.info(name:{},student.getName()); log.info(age:{},student.getAge()); } } Data class Student{ private String name; private Integer age; }1.3 通过HttpServletRequest接收参数RestController RequestMapping(/demo) Slf4j public class DemoController { GetMapping(/query) public void getStudent(HttpServletRequest request) { String name request.getParameter(name); String phone request.getParameter(age); log.info(name:{},name); log.info(age:{},age); } }1.4 通过PathVariable接收参数RestController RequestMapping(/demo) Slf4j public class DemoController { GetMapping(/query/{name}/{age}) public void getStudent(PathVariable String name, PathVariable String age) { log.info(name:{},name); log.info(age:{},age); } }1.5 接收数组参数RestController RequestMapping(/demo) Slf4j public class DemoController { GetMapping(/query) public void getStudent(String[] names) { Arrays.stream(names).forEach(System.out::println); } }1.6 接受集合参数注意SpringBoot 接收集合参数必须用 RequestParam 注解声明RestController RequestMapping(/demo) Slf4j public class DemoController { GetMapping(/query) public void getStudent(RequestParam ListString names) { names.forEach(System.out::println); } }2、POST请求2.1 方法形参接收参数前后端参数名称必须保持一致RestControllerRequestMapping(“/user”)Slf4jpublic class DemoController {PostMapping(/save) public void saveStudent(String name,String age) { log.info(name:{},name); log.info(age:{},age); }}参数用 RequestParam 标注使用value属性指定参数名required属性表示这个参数是否必传RestControllerRequestMapping(“/user”)Slf4jpublic class DemoController {PostMapping(/save) public void saveStudent(RequestParam(value name, required false) String name, RequestParam(value age, required false) String age) { log.info(name:{},name); log.info(age:{},age); }}2.2 通过HttpServletRequest接收参数RestController RequestMapping(/demo) Slf4j public class DemoController { PostMapping(/save) public void saveStudent(HttpServletRequest request) { String name request.getParameter(name); String phone request.getParameter(age); log.info(name:{},name); log.info(age:{},age); } }2.3 通过PathVariable接收参数RestController RequestMapping(/demo) Slf4j public class DemoController { PostMapping(/save/{name}/{age}) public void saveStudent(PathVariable String name, PathVariable String age) { log.info(name:{},name); log.info(age:{},age); } }2.4 通过param方式提交参数以实体类接收参数直接以实体类可以接收param、form-data、 x-www-form-urlencoded 提交的参数RestController RequestMapping(/demo) Slf4j public class DemoController { PostMapping(/save) public void saveStudent(Student student) { log.info(name:{},student.getName()); log.info(age:{},student.getAge()); } } Data class Student{ private String name; private Integer age; }2.5 请求体以JSON格式提交参数通过 RequestBody 注解接收参数接受实体类JSON参数RestControllerRequestMapping(“/demo”)Slf4jpublic class DemoController {PostMapping(/save) public void saveStudent(RequestBody Student student) { log.info(name:{},student.getName()); log.info(age:{},student.getAge()); }}Dataclass Student{private String name;private Integer age;}接收数组或者集合类JSON参数RestControllerRequestMapping(“/demo”)Slf4jpublic class DemoController {PostMapping(/save) public void saveStudent(RequestBody String[] names) { Arrays.stream(names).forEach(System.out::println); } PostMapping(/save) public void saveStudent(RequestBody ListString names) { names.forEach(System.out::println); }}2.6 通过 Map 接收参数RestController RequestMapping(/demo) Slf4j public class DemoController { PostMapping(/save) public void saveStudent(RequestParam MapString,Object map) { log.info(name:{},map.get(name)); log.info(age:{},map.get(age)); } }2.7 通过RequestBody 接收一个参数RestController RequestMapping(/demo) Slf4j public class DemoController { PostMapping(/save) public void saveStudent(RequestBody String name) { log.info(name:{},name); } }