#后台请求json 格式 / FormData 格式
import fetch from 'dva/fetch';
import fetchJsonp from 'fetch-jsonp';
import { notification } from 'antd';
import { routerRedux } from 'dva/router';
import store from '../index';
const codeMessage = {
200: '服务器成功返回请求的数据。',
201: '新建或修改数据成功。',
202: '一个请求已经进入后台排队(异步任务)。',
204: '删除数据成功。',
400: '发出的请求有错误,服务器没有进行新建或修改数据的操作。',
401: '用户没有权限(令牌、用户名、密码错误)。',
403: '用户得到授权,但是访问是被禁止的。',
404: '发出的请求针对的是不存在的记录,服务器没有进行操作。',
406: '请求的格式不可得。',
410: '请求的资源被永久删除,且不会再得到的。',
422: '当创建一个对象时,发生一个验证错误。',
500: '服务器发生错误,请检查服务器。',
502: '网关错误。',
503: '服务不可用,服务器暂时过载或维护。',
504: '网关超时。',
};
function checkStatus(response) {
if (response.status >= 200 && response.status < 300) {
return response;
}
const errortext = codeMessage[response.status] || response.statusText;
notification.error({
message: `请求错误 ${response.status}: ${response.url}`,
description: errortext,
});
const error = new Error(errortext);
error.name = response.status;
error.response = response;
throw error;
}
/**
* Requests a URL, returning a promise.
*
* @param {string} url The URL we want to request
* @param {object} [options] The options we want to pass to "fetch"
* @return {object} An object containing either "data" or "err"
*/
export default function request(url, options) {
const defaultOptions = {
credentials: 'include',
};
const newOptions = { ...defaultOptions, ...options };
if (newOptions.method === 'POST' || newOptions.method === 'PUT') {
if (!(newOptions.body instanceof FormData)) {
newOptions.headers = {
Accept: 'application/json',
'Content-Type': 'application/json; charset=utf-8',
...newOptions.headers,
};
newOptions.body = JSON.stringify(newOptions.body);
} else {
// newOptions.body is FormData
// newOptions.headers = {
// "Content-Type": "multipart/form-data",
// // ...newOptions.headers,
// };
//newOptions = {...options}
//newOptions.headers = {"Content-Type": "multipart/form-data"}
return requestcore(url,options);
}
}
return fetch(url, newOptions)
.then(checkStatus)
.then(response => {
if (newOptions.method === 'DELETE' || response.status === 204) {
return response.text();
}
return response.json();
})
.catch(e => {
const { dispatch } = store;
const status = e.name;
if (status === 401) {
dispatch({
type: 'login/logout',
});
return;
}
if (status === 403) {
dispatch(routerRedux.push('/exception/403'));
return;
}
if (status <= 504 && status >= 500) {
dispatch(routerRedux.push('/exception/500'));
return;
}
if (status >= 404 && status < 422) {
dispatch(routerRedux.push('/exception/404'));
}
});
}
function requestcore(url, options) {
const newOptions = { ...options };
if (newOptions.method === 'POST' || newOptions.method === 'PUT') {
// newOptions.body is FormData
// newOptions.headers = {
// "Content-Type": "multipart/form-data",
// // ...newOptions.headers,
// };
// newOptions.headers = {"Content-Type": "multipart/form-data"}
}
return fetch(url, newOptions)
.then(checkStatus)
.then(response => {
if (newOptions.method === 'DELETE' || response.status === 204) {
return response.text();
}
return response.json();
})
.catch(e => {
const { dispatch } = store;
const status = e.name;
if (status === 401) {
dispatch({
type: 'login/logout',
});
return;
}
if (status === 403) {
dispatch(routerRedux.push('/exception/403'));
return;
}
if (status <= 504 && status >= 500) {
dispatch(routerRedux.push('/exception/500'));
return;
}
if (status >= 404 && status < 422) {
dispatch(routerRedux.push('/exception/404'));
}
});
}
request 处理所有请求
#后端
public ServiceResponse login(@RequestBody UserInfo info)
#附件采用FormData 包装参数,调用requestcore
const formData = new FormData()
formData.append('file', values.template.file, values.template.file.name);
formData.append('billTypeId',values.billType);
formData.append('name',values.name);
formData.append('number',values.number);
formData.append('remark',values.remark);
dispatch({
type: 'billTable/add',
payload: formData,
callback: (res) => {
if(res.meta.status !== '000000' ) {
message.error("添加业务用表失败,请稍后再试!"+res.data.alert_msg)
}else{
//
message.success('添加成功');
form.resetFields();
handleModalVisible(false);
dispatch({
type: 'billTable/fetch',
payload: {
page: 1,
pageSize: 10,
}
});
}
},
});
不用增加headers 参数,不然后台会报错
#后端
public ServiceResponse addBillTable(BillTableInfo paramObj, HttpServletRequest req, MultipartFile file)
不用增加@RequestBody 注解
转载于:https://my.oschina.net/u/3277181/blog/3059652