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Spring boot 获取post提交参数的几种方法

前提：

客户端提交header，设置Content-Type类型为：application/json，这一项设置可有可无，但是为了避免出现其他不可预料的问题，事先说明，建议添加这一项请求头header设置。

一、使用@RequestParam

    @RequestMapping(value = "/login", method = RequestMethod.POST)
    public Map<String, Object> login(@RequestParam("username") String username, @RequestParam("password") String password) {
        Map<String, Object> map = new HashMap<>();
        log.info("正在登录，账号 = {}，密码 = {}", username, password);
        return map;
    }

二、使用Map

    @RequestMapping(value = "/login", method = RequestMethod.POST)
    public Map<String, Object> login(@RequestParam Map<String,Object> params) {
        Map<String, Object> map = new HashMap<>();
        log.info("正在登录，账号 = {}，密码 = {}", params.get("username"), params.get("password"));
        return map;
    }

三、使用数组

    @RequestMapping(value = "/login", method = RequestMethod.POST)
    public void login(@RequestParam("name") String[] names) {
        for(String name: names) {
            System.out.println(name);
        }
    }

四、使用自定义对象，建议使用这种方式

@PostMapping("/test")
public R test(@Validated @RequestBody Request vo) {
      ProjectVO projectVO = iProjectService.test(vo);
      return new R().success(projectVO);
  }

import org.springframework.http.HttpStatus;
 
import java.io.Serializable;
 
public class R<T> implements Serializable {
    private Integer status;
    private String msg;
    private T data;
 
    public R success() {
        this.status = HttpStatus.OK.value();
        this.msg = "OK";
        return this;
    }
 
    public R success(Integer status, String message) {
        this.status = status;
        this.msg = message;
        return this;
    }
 
    public R<T> success(T response) {
        this.status = HttpStatus.OK.value();
        this.msg = "OK";
        this.data = response;
        return this;
    }
 
    public R<T> success(Integer status, String message, T response) {
        this.status = status;
        this.msg = message;
        this.data = response;
        return this;
    }
 
    public R error(String message) {
        this.status = HttpStatus.INTERNAL_SERVER_ERROR.value();
        this.msg = message;
        return this;
    }
 
    public R error(Integer status, String message) {
        this.status = status;
        this.msg = message;
        return this;
    }
 
    public Integer getStatus() {
        return status;
    }
 
    public void setStatus(Integer status) {
        this.status = status;
    }
 
    public String getMsg() {
        return msg;
    }
 
    public void setMsg(String message) {
        this.msg = message;
    }
 
    public T getData() {
        return data;
    }
 
    public void setData(T response) {
        this.data = response;
    }
}