我有一些参数，我想POST表单编码到我的服务器:
{
'userName': 'test@gmail.com',
'password': 'Password!',
'grant_type': 'password'
}
我像这样发送我的请求(目前没有参数)
var obj = {
method: 'POST',
headers: {
'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
},
};
fetch('https://example.com/login', obj)
.then(function(res) {
// Do stuff with result
});
如何在请求中包含表单编码的参数?
当前回答
更简单:
fetch('https://example.com/login', {
method: 'POST',
headers:{
'Content-Type': 'application/x-www-form-urlencoded'
},
body: new URLSearchParams({
'userName': 'test@gmail.com',
'password': 'Password!',
'grant_type': 'password'
})
});
文档:https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/fetch
其他回答
您可以使用react-native-easy-app，更容易发送http请求和制定拦截请求。
import { XHttp } from 'react-native-easy-app';
* Synchronous request
const params = {name:'rufeng',age:20}
const response = await XHttp().url(url).param(params).formEncoded().execute('GET');
const {success, json, message, status} = response;
* Asynchronous requests
XHttp().url(url).param(params).formEncoded().get((success, json, message, status)=>{
if (success){
this.setState({content: JSON.stringify(json)});
} else {
showToast(msg);
}
});
更简单:
fetch('https://example.com/login', {
method: 'POST',
headers:{
'Content-Type': 'application/x-www-form-urlencoded'
},
body: new URLSearchParams({
'userName': 'test@gmail.com',
'password': 'Password!',
'grant_type': 'password'
})
});
文档:https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/fetch
*/ import this statement */
import qs from 'querystring'
fetch("*your url*", {
method: 'POST',
headers: {'Content-Type': 'application/x-www-form-urlencoded;charset=UTF-8'},
body: qs.stringify({
username: "akshita",
password: "123456",
})
}).then((response) => response.json())
.then((responseData) => {
alert(JSON.stringify(responseData))
})
在使用npm i querystring后，保存它的工作很好。
对于上传表单编码的POST请求，我建议使用FormData对象。
示例代码:
var params = {
userName: 'test@gmail.com',
password: 'Password!',
grant_type: 'password'
};
var formData = new FormData();
for (var k in params) {
formData.append(k, params[k]);
}
var request = {
method: 'POST',
headers: headers,
body: formData
};
fetch(url, request);
根据规范，使用encodeURIComponent不会给你一个符合要求的查询字符串。州:
Control names and values are escaped. Space characters are replaced by +, and then reserved characters are escaped as described in [RFC1738], section 2.2: Non-alphanumeric characters are replaced by %HH, a percent sign and two hexadecimal digits representing the ASCII code of the character. Line breaks are represented as "CR LF" pairs (i.e., %0D%0A). The control names/values are listed in the order they appear in the document. The name is separated from the value by = and name/value pairs are separated from each other by &.
问题是，encodeURIComponent将空格编码为%20，而不是+。
表单主体应该使用其他答案中显示的encodeURIComponent方法的变体进行编码。
const formUrlEncode = str => {
return str.replace(/[^\d\w]/g, char => {
return char === " "
? "+"
: encodeURIComponent(char);
})
}
const data = {foo: "bar߃©˙∑ baz", boom: "pow"};
const dataPairs = Object.keys(data).map( key => {
const val = data[key];
return (formUrlEncode(key) + "=" + formUrlEncode(val));
}).join("&");
// dataPairs is "foo=bar%C3%9F%C6%92%C2%A9%CB%99%E2%88%91++baz&boom=pow"
