Skip to content

Latest commit

 

History

History
106 lines (63 loc) · 2.93 KB

接收参数.md

File metadata and controls

106 lines (63 loc) · 2.93 KB

springboot接收前端参数

表单格式：form-data、x-www-form-urlencoded

非表单格式：json、xml、html、text等等

1.HttpServletRequest

post（表单格式数据）和get请求都可以用，不可以接收post除表单之外的格式数据

public AjaxResult sendSms(HttpServletRequest req) throws Exception {
    System.out.println(req.getParameter("phoneValue"));
    return  AjaxResult.success();
}

2.方法中写上形参

适用于get、post（表单格式数据）都可以。不可以接收post除表单之外的格式数据

直接在方法中写上参数的名字，参数名字和请求中参数名字必须一样

public AjaxResult sendSms(String phoneValue) throws Exception {
    System.out.println(phoneValue);
    return  AjaxResult.success();
}

springboot的@RequestParam不好使，需要设置它required = false,defaultValue = "1".推荐上面的方法

@GetMapping("/sendsms")
public AjaxResult sendSms(@RequestParam(value = "s",required = false,defaultValue = "1") String s,@RequestParam(value = "n") String n) throws Exception {
    System.out.println(s1+n);
    return  AjaxResult.success();
}

3.直接用bean来接收

post（表单格式）和get都可以来接收

  1. 用bean接收get请求的参数
@GetMapping("/sendsms")
public AjaxResult sendSms(User user) throws Exception {
    System.out.println(user.toString());
 
    return  AjaxResult.success();
}

//打印
User{id=null, name='132213', age=123, identity='null', height=187.0, weight=null, sex='null', attribute='null', starttime=null, currentprovince='null', currentcity='null', currentcounty='null', purpose='null', account='null', picture='null'}
  1. 用bean接收post请求参数
@PostMapping("/sendsms")
public AjaxResult sendSms(User user) throws Exception {
    System.out.println(user.toString());
    return  AjaxResult.success();
}

//打印
//User{id=null, name='132213', age=123, identity='null', height=187.0, weight=null, sex='null', attribute='null', starttime=null, currentprovince='null', currentcity='null', currentcounty='null', purpose='null', account='null', picture='null'}

4.@RequestBody

适合post请求，如果没有RequestBody会报错。只关系请求体中有没有数据数据，没有就会报错。

处理除表单之外的其他格式的post数据，例如json、xml等等

用@RequestBody接收Json格式的数据，并用bean来接收

@PostMapping("/sendsms")
public String sendSms(@RequestBody User user) throws Exception {
    System.out.println(user);
    return user.toString();
}


//打印效果
//User{id=null, name='2', age=1, identity='null', height=null, weight=null, sex='null', attribute='null', starttime=null, currentprovince='null', currentcity='null', currentcounty='null', purpose='null', account='null', picture='null'}