vue3若依框架前端打包部署到服务器,需要部署到多个服务器上,每次打包会很麻烦,今天教大家一个动态配置请求头api的方法,部署后能动态获取(修改)对应服务器的请求ip
介绍两种方法,如有需要可以直接尝试步骤一,不行再用步骤二
方法一 、
只需要在request中获取地址栏的信息,不用新建文件
获取地址栏的http请求头
var baseUrlDt =
window.location.protocol + "//" + window.location.hostname + ":8010";
let downloadLoadingInstance; // 动态ip打包时使用这条代码
request.js全部代码:
import axios from "axios";
import {
ElNotification,
ElMessageBox,
ElMessage,
ElLoading,
} from "element-plus";
import { getToken } from "@/utils/auth";
import errorCode from "@/utils/errorCode";
import { tansParams, blobValidate } from "@/utils/ruoyi";
import cache from "@/plugins/cache";
import { saveAs } from "file-saver";
import useUserStore from "@/store/modules/user";
var baseUrlDt =
window.location.protocol + "//" + window.location.hostname + ":8010";
let downloadLoadingInstance; // 动态ip打包时使用这条代码
// 是否显示重新登录
export let isRelogin = { show: false };
axios.defaults.headers["Content-Type"] = "application/json;charset=utf-8";
// 创建axios实例
const service = axios.create({
// axios中请求配置有baseURL选项,表示请求URL公共部分
// baseURL: import.meta.env.VITE_APP_BASE_API,
baseURL: baseUrlDt, // 动态ip打包时使用这条代码
// 超时
timeout: 10000,
});
// request拦截器
service.interceptors.request.use(
(config) => {
// 是否需要设置 token
const isToken = (config.headers || {}).isToken === false;
// 是否需要防止数据重复提交
const isRepeatSubmit = (config.headers || {}).repeatSubmit === false;
if (getToken() && !isToken) {
config.headers["Authorization"] = "Bearer " + getToken(); // 让每个请求携带自定义token 请根据实际情况自行修改
}
// get请求映射params参数
if (config.method === "get" && config.params) {
let url = config.url + "?" + tansParams(config.params);
url = url.slice(0, -1);
config.params = {};
config.url = url;
}
if (
!isRepeatSubmit &&
(config.method === "post" || config.method === "put")
) {
const requestObj = {
url: config.url,
data:
typeof config.data === "object"
? JSON.stringify(config.data)
: config.data,
time: new Date().getTime(),
};
const requestSize = Object.keys(JSON.stringify(requestObj)).length; // 请求数据大小
const limitSize = 5 * 1024 * 1024; // 限制存放数据5M
if (requestSize >= limitSize) {
console.warn(
`[${config.url}]: ` +
"请求数据大小超出允许的5M限制,无法进行防重复提交验证。"
);
return config;
}
const sessionObj = cache.session.getJSON("sessionObj");
if (
sessionObj === undefined ||
sessionObj === null ||
sessionObj === ""
) {
cache.session.setJSON("sessionObj", requestObj);
} else {
const s_url = sessionObj.url; // 请求地址
const s_data = sessionObj.data; // 请求数据
const s_time = sessionObj.time; // 请求时间
const interval = 1000; // 间隔时间(ms),小于此时间视为重复提交
if (
s_data === requestObj.data &&
requestObj.time - s_time < interval &&
s_url === requestObj.url
) {
const message = "数据正在处理,请勿重复提交";
console.warn(`[${s_url}]: ` + message);
return Promise.reject(new Error(message));
} else {
cache.session.setJSON("sessionObj", requestObj);
}
}
}
return config;
},
(error) => {
console.log(error);
Promise.reject(error);
}
);
// 响应拦截器
service.interceptors.response.use(
(res) => {
// 未设置状态码则默认成功状态
const code = res.data.code || 200;
// 获取错误信息
const msg = errorCode[code] || res.data.msg || errorCode["default"];
// 二进制数据则直接返回
if (
res.request.responseType === "blob" ||
res.request.responseType === "arraybuffer"
) {
return res.data;
}
if (code === 401) {
if (!isRelogin.show) {
isRelogin.show = true;
ElMessageBox.confirm(
"登录状态已过期,您可以继续留在该页面,或者重新登录",
"系统提示",
{
confirmButtonText: "重新登录",
cancelButtonText: "取消",
type: "warning",
}
)
.then(() => {
isRelogin.show = false;
useUserStore()
.logOut()
.then(() => {
location.href = "/index";
});
})
.catch(() => {
isRelogin.show = false;
});
}
return Promise.reject("无效的会话,或者会话已过期,请重新登录。");
} else if (code === 500) {
ElMessage({ message: msg, type: "error" });
return Promise.reject(new Error(msg));
} else if (code === 601) {
ElMessage({ message: msg, type: "warning" });
return Promise.reject(new Error(msg));
} else if (code !== 200) {
ElNotification.error({ title: msg });
return Promise.reject("error");
} else {
return Promise.resolve(res.data);
}
},
(error) => {
console.log("err" + error);
let { message } = error;
if (message == "Network Error") {
message = "后端接口连接异常";
} else if (message.includes("timeout")) {
message = "系统接口请求超时";
} else if (message.includes("Request failed with status code")) {
message = "系统接口" + message.substr(message.length - 3) + "异常";
}
ElMessage({ message: message, type: "error", duration: 5 * 1000 });
return Promise.reject(error);
}
);
// 通用下载方法
export function download(url, params, filename, config) {
downloadLoadingInstance = ElLoading.service({
text: "正在下载数据,请稍候",
background: "rgba(0, 0, 0, 0.7)",
});
return service
.post(url, params, {
transformRequest: [
(params) => {
return tansParams(params);
},
],
headers: { "Content-Type": "application/x-www-form-urlencoded" },
responseType: "blob",
...config,
})
.then(async (data) => {
const isBlob = blobValidate(data);
if (isBlob) {
const blob = new Blob([data]);
saveAs(blob, filename);
} else {
const resText = await data.text();
const rspObj = JSON.parse(resText);
const errMsg =
errorCode[rspObj.code] || rspObj.msg || errorCode["default"];
ElMessage.error(errMsg);
}
downloadLoadingInstance.close();
})
.catch((r) => {
console.error(r);
ElMessage.error("下载文件出现错误,请联系管理员!");
downloadLoadingInstance.close();
});
}
export default service;
方法二、
原理:打包的时候将动态的ip排除在打包外,不参与打包,类似于public文件夹下的index.html
步骤一、
在public文件夹下新建config.js文件,有的项目是static文件夹下
var ipConfig = {
AXIOS_TIMEOUT: 10000,
baseUrl: "http://xxx",//配置服务器IP及端口
}
步骤二、
在根目录的index.html引入新增config.js,在项目中就可以使用了
<!-- 动态ip打包时使用这条代码 -->
<script type="text/javascript" src="/public/config.js"></script>
步骤三、
找到request.js文件,在拦截器中直接调用对象
const baseURL = window.ipConfig.baseUrl; // 动态ip打包时使用这条代码
request.js全部代码:
import axios from "axios";
import {
ElNotification,
ElMessageBox,
ElMessage,
ElLoading,
} from "element-plus";
import { getToken } from "@/utils/auth";
import errorCode from "@/utils/errorCode";
import { tansParams, blobValidate } from "@/utils/ruoyi";
import cache from "@/plugins/cache";
import { saveAs } from "file-saver";
import useUserStore from "@/store/modules/user";
// axios.defaults.baseURL = window.ipConfig.BASE_URL//'http://192.168.1.177:8083/'
// // 开启认证
// axios.defaults.withCredentials = true
const baseURL = window.ipConfig.baseUrl; // 动态ip打包时使用这条代码
let downloadLoadingInstance;
// 是否显示重新登录
export let isRelogin = { show: false };
axios.defaults.headers["Content-Type"] = "application/json;charset=utf-8";
// 创建axios实例
const service = axios.create({
// axios中请求配置有baseURL选项,表示请求URL公共部分
// baseURL: import.meta.env.VITE_APP_BASE_API,
baseURL: baseURL, // 动态ip打包时使用这条代码
// 超时
timeout: 10000,
});
// request拦截器
service.interceptors.request.use(
(config) => {
// 是否需要设置 token
const isToken = (config.headers || {}).isToken === false;
// 是否需要防止数据重复提交
const isRepeatSubmit = (config.headers || {}).repeatSubmit === false;
if (getToken() && !isToken) {
config.headers["Authorization"] = "Bearer " + getToken(); // 让每个请求携带自定义token 请根据实际情况自行修改
}
// get请求映射params参数
if (config.method === "get" && config.params) {
let url = config.url + "?" + tansParams(config.params);
url = url.slice(0, -1);
config.params = {};
config.url = url;
}
if (
!isRepeatSubmit &&
(config.method === "post" || config.method === "put")
) {
const requestObj = {
url: config.url,
data:
typeof config.data === "object"
? JSON.stringify(config.data)
: config.data,
time: new Date().getTime(),
};
const requestSize = Object.keys(JSON.stringify(requestObj)).length; // 请求数据大小
const limitSize = 5 * 1024 * 1024; // 限制存放数据5M
if (requestSize >= limitSize) {
console.warn(
`[${config.url}]: ` +
"请求数据大小超出允许的5M限制,无法进行防重复提交验证。"
);
return config;
}
const sessionObj = cache.session.getJSON("sessionObj");
if (
sessionObj === undefined ||
sessionObj === null ||
sessionObj === ""
) {
cache.session.setJSON("sessionObj", requestObj);
} else {
const s_url = sessionObj.url; // 请求地址
const s_data = sessionObj.data; // 请求数据
const s_time = sessionObj.time; // 请求时间
const interval = 1000; // 间隔时间(ms),小于此时间视为重复提交
if (
s_data === requestObj.data &&
requestObj.time - s_time < interval &&
s_url === requestObj.url
) {
const message = "数据正在处理,请勿重复提交";
console.warn(`[${s_url}]: ` + message);
return Promise.reject(new Error(message));
} else {
cache.session.setJSON("sessionObj", requestObj);
}
}
}
return config;
},
(error) => {
console.log(error);
Promise.reject(error);
}
);
// 响应拦截器
service.interceptors.response.use(
(res) => {
// 未设置状态码则默认成功状态
const code = res.data.code || 200;
// 获取错误信息
const msg = errorCode[code] || res.data.msg || errorCode["default"];
// 二进制数据则直接返回
if (
res.request.responseType === "blob" ||
res.request.responseType === "arraybuffer"
) {
return res.data;
}
if (code === 401) {
if (!isRelogin.show) {
isRelogin.show = true;
ElMessageBox.confirm(
"登录状态已过期,您可以继续留在该页面,或者重新登录",
"系统提示",
{
confirmButtonText: "重新登录",
cancelButtonText: "取消",
type: "warning",
}
)
.then(() => {
isRelogin.show = false;
useUserStore()
.logOut()
.then(() => {
location.href = "/index";
});
})
.catch(() => {
isRelogin.show = false;
});
}
return Promise.reject("无效的会话,或者会话已过期,请重新登录。");
} else if (code === 500) {
ElMessage({ message: msg, type: "error" });
return Promise.reject(new Error(msg));
} else if (code === 601) {
ElMessage({ message: msg, type: "warning" });
return Promise.reject(new Error(msg));
} else if (code !== 200) {
ElNotification.error({ title: msg });
return Promise.reject("error");
} else {
return Promise.resolve(res.data);
}
},
(error) => {
console.log("err" + error);
let { message } = error;
if (message == "Network Error") {
message = "后端接口连接异常";
} else if (message.includes("timeout")) {
message = "系统接口请求超时";
} else if (message.includes("Request failed with status code")) {
message = "系统接口" + message.substr(message.length - 3) + "异常";
}
ElMessage({ message: message, type: "error", duration: 5 * 1000 });
return Promise.reject(error);
}
);
// 通用下载方法
export function download(url, params, filename, config) {
downloadLoadingInstance = ElLoading.service({
text: "正在下载数据,请稍候",
background: "rgba(0, 0, 0, 0.7)",
});
return service
.post(url, params, {
transformRequest: [
(params) => {
return tansParams(params);
},
],
headers: { "Content-Type": "application/x-www-form-urlencoded" },
responseType: "blob",
...config,
})
.then(async (data) => {
const isBlob = blobValidate(data);
if (isBlob) {
const blob = new Blob([data]);
saveAs(blob, filename);
} else {
const resText = await data.text();
const rspObj = JSON.parse(resText);
const errMsg =
errorCode[rspObj.code] || rspObj.msg || errorCode["default"];
ElMessage.error(errMsg);
}
downloadLoadingInstance.close();
})
.catch((r) => {
console.error(r);
ElMessage.error("下载文件出现错误,请联系管理员!");
downloadLoadingInstance.close();
});
}
export default service;
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