SpringBoot接收参数的8种方式示例详解

    @RequestMapping("/fun1")
    public Book fun1(String name, Long id){
        log.info("{}  {}",id,name);
        Book book=new Book(id, name);
        return book;
    }

    @RequestMapping("/fun2")
    public Book fun2(Book book){
        log.info("book={}",book);
        return book;
    }

    @RequestMapping("/fun3")
    public Book fun3(HttpServletRequest request){
        log.info("{}  {}",request.getParameter("id"),request.getParameter("name"));
        return new Book(Long.parseLong(request.getParameter("id")),request.getParameter("name"));
    }

        //  key-value 类型
        Map<String, String[]> map = request.getParameterMap();
        //  路径参数
        String pathInfo = request.getPathInfo();
        //  body内容
        ServletInputStream inputStream = request.getInputStream();

    @RequestMapping("/fun4/{id}/{name}")
    public Book fun4(@PathVariable long id,@PathVariable String name){
        log.info("{}  {}",id,name);
        Book book=new Book(id, name);
        return book;
    }

    @RequestMapping("/fun6")
    public Book fun6(@RequestParam("name") String name,
                     @RequestParam("id") Long id){
        log.info("{}  {}",id,name);
        Book book=new Book(id, name);
        return book;
}

当请求参数username或者password不存在时会有异常发生,可以通过设置属性required=false解决
@RequestParam(value="username", required=false)

    @RequestMapping("/fun7")
    public Book fun7(@RequestBody Book book){
        log.info("book={}",book);
        return book;
    }

// 方式1：获取单个header属性
@RequestMapping("/geteHeader")
public void getHeader(@RequestHeader("user-id") String userId){
}
//方式2：获取所有header属性
@RequestMapping("/geteHeader")
public void getHeader(@RequestHeader Map<String, String> headers){
}
//方式3 获取header对象
@RequestMapping("/geteHeader")
public void getHeader(@RequestHeader HttpHeaders headers){
}

@GetMapping("park/getCookie")
    public String getCookieValue(@CookieValue("jid") String jId) {
        System.out.println(jId);
        return "success";
    }