最近遇到一个前端，请求参数不是按照json来搞的，给我整迷了，而且她还比较倔强。因为后端框架是统一按照json的格式接收和返回数据的（例外的除外），接下来就下一个请求后端的方法，大家可以参考一下：
前端先写一个js，请求客户列表数据的方法：
<template>
<div class="app-container">
<el-form :model="queryParams" ref="queryForm" :inline="true" v-show="showSearch" label-width="68px">
<el-form-item label="客户名称" prop="name">
<el-input
v-model="queryParams.name"
placeholder="请输入客户名称"
clearable
size="small"
@keyup.enter.native="handleQuery"
/>
</el-form-item>
<el-form-item label="客户编号" prop="accountNo">
<el-input
v-model="queryParams.accountNo"
placeholder="请输入客户编号"
clearable
size="small"
@keyup.enter.native="handleQuery"
/>
</el-form-item>
<el-form-item label="证件类型" prop="identitytype">
<el-select v-model="queryParams.identitytype" placeholder="请选择证件类型" clearable size="small">
<el-option
v-for="dict in dict.type.identitytype"
:key="dict.value"
:label="dict.label"
:value="dict.value"
/>
</el-select>
</el-form-item>
<el-form-item label="证件号码" prop="identityno">
<el-input
v-model="queryParams.identityno"
placeholder="请输入证件号码"
clearable
size="small"
@keyup.enter.native="handleQuery"
/>
</el-form-item>
<el-form-item label="客户状态" prop="state">
<el-input
v-model="queryParams.state"
placeholder="请输入客户状态"
clearable
size="small"
@keyup.enter.native="handleQuery"
/>
</el-form-item>
<el-form-item>
<el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
<el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
</el-form-item>
</el-form>
<el-row :gutter="10" class="mb8">
<el-col :span="1.5">
<el-button
type="primary"
plain
icon="el-icon-plus"
size="mini"
@click="handleAdd"
v-hasPermi="['system:account:add']"
>新增</el-button>
</el-col>
<el-col :span="1.5">
<el-button
type="success"
plain
icon="el-icon-edit"
size="mini"
:disabled="single"
@click="handleUpdate"
v-hasPermi="['system:account:edit']"
>修改</el-button>
</el-col>
<el-col :span="1.5">
<el-button
type="danger"
plain
icon="el-icon-delete"
size="mini"
:disabled="multiple"
@click="handleDelete"
v-hasPermi="['system:account:remove']"
>删除</el-button>
</el-col>
<el-col :span="1.5">
<el-button
type="warning"
plain
icon="el-icon-download"
size="mini"
@click="handleExport"
v-hasPermi="['system:account:export']"
>导出</el-button>
</el-col>
<right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
</el-row>
<el-table v-loading="loading" :data="accountList" @selection-change="handleSelectionChange">
<el-table-column type="selection" width="55" align="center" />
<el-table-column label="实体主键" align="center" prop="objid" />
<el-table-column label="负责人" align="center" prop="ownerid" />
<el-table-column label="客户名称" align="center" prop="name" />
<el-table-column label="客户编号" align="center" prop="accountNo" />
<el-table-column label="证件类型" align="center" prop="identitytype">
<template slot-scope="scope">
<dict-tag :options="dict.type.identitytype" :value="scope.row.identitytype"/>
</template>
</el-table-column>
<el-table-column label="证件号码" align="center" prop="identityno" />
<el-table-column label="客户状态" align="center" prop="state" />
<el-table-column label="财汇企业代码" align="center" prop="itcode" />
<el-table-column label="操作" align="center" class-name="small-padding fixed-width">
<template slot-scope="scope">
<el-button
size="mini"
type="text"
icon="el-icon-edit"
@click="handleUpdate(scope.row)"
v-hasPermi="['system:account:edit']"
>修改</el-button>
<el-button
size="mini"
type="text"
icon="el-icon-delete"
@click="handleDelete(scope.row)"
v-hasPermi="['system:account:remove']"
>删除</el-button>
</template>
</el-table-column>
</el-table>
<pagination
v-show="total>0"
:total="total"
:page.sync="queryParams.pageNum"
:limit.sync="queryParams.pageSize"
@pagination="getList"
/>
<!-- 添加或修改客户管理对话框 -->
<el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
<el-form ref="form" :model="form" :rules="rules" label-width="80px">
<el-form-item label="客户名称" prop="name">
<el-input v-model="form.name" placeholder="请输入客户名称" />
</el-form-item>
<el-form-item label="客户编号" prop="account_no">
<el-input v-model="form.account_no" placeholder="请输入客户编号" />
</el-form-item>
<el-form-item label="证件类型" prop="identitytype">
<el-select v-model="form.identitytype" placeholder="请选择证件类型">
<el-option
v-for="dict in dict.type.identitytype"
:key="dict.value"
:label="dict.label"
:value="dict.value"
></el-option>
</el-select>
</el-form-item>
<el-form-item label="证件号码" prop="identityno">
<el-input v-model="form.identityno" placeholder="请输入证件号码" />
</el-form-item>
<el-form-item label="客户状态" prop="state">
<el-input v-model="form.state" placeholder="请输入客户状态" />
</el-form-item>
</el-form>
<div slot="footer" class="dialog-footer">
<el-button type="primary" @click="submitForm">确 定</el-button>
<el-button @click="cancel">取 消</el-button>
</div>
</el-dialog>
</div>
</template>
<script>
import { listAccount, getAccount, delAccount, addAccount, updateAccount } from "@/api/system/account";
export default {
name: "Account",
dicts: ['identitytype'],
data() {
return {
// 遮罩层
loading: true,
// 选中数组
ids: [],
// 非单个禁用
single: true,
// 非多个禁用
multiple: true,
// 显示搜索条件
showSearch: true,
// 总条数
total: 0,
// 客户管理表格数据
accountList: [],
// 弹出层标题
title: "",
// 是否显示弹出层
open: false,
// 查询参数
queryParams: {
pageNum: 1,
pageSize: 10,
createtimestamp: null,
updatetimestamp: null,
version: null,
entityname: null,
createdby: null,
updateby: null,
ownerid: null,
name: null,
accountNo: null,
grade: null,
category: null,
categoryA: null,
categoryB: null,
identitytype: null,
identityno: null,
parentid: null,
groupid: null,
accountLevel: null,
state: null,
itcode: null,
ftName: null,
engName: null,
manager: null,
tAccountLevel0: null,
area: null,
area0: null,
area1: null,
area2: null,
area3: null,
area4: null
},
// 表单参数
form: {},
// 表单校验
rules: {
name: [
{ required: true, message: "客户名称不能为空", trigger: "blur" }
],
identitytype: [
{ required: true, message: "证件类型不能为空", trigger: "blur" }
],
identityno: [
{ required: true, message: "证件号码不能为空", trigger: "blur" }
],
state: [
{ required: true, message: "客户状态不能为空", trigger: "blur" }
],
account_no: [
{ required: true, message: "客户编号不能为空", trigger: "blur" }
],
}
};
},
created() {
this.getList();
},
methods: {
/** 查询客户管理列表 */
getList() {
this.loading = true;
listAccount(this.queryParams).then(response => {
this.accountList = response.rows;
this.total = response.total;
this.loading = false;
});
},
// 取消按钮
cancel() {
this.open = false;
this.reset();
},
// 表单重置
reset() {
this.form = {
objid: null,
createtimestamp: null,
updatetimestamp: null,
version: null,
entityname: null,
createdby: null,
updateby: null,
ownerid: null,
name: null,
accountNo: null,
grade: null,
category: null,
categoryA: null,
categoryB: null,
identitytype: null,
identityno: null,
parentid: null,
groupid: null,
accountLevel: null,
state: null,
itcode: null,
ftName: null,
engName: null,
manager: null,
tAccountLevel0: null,
area: null,
area0: null,
area1: null,
area2: null,
area3: null,
area4: null
};
this.resetForm("form");
},
/** 搜索按钮操作 */
handleQuery() {
this.queryParams.pageNum = 1;
this.getList();
},
/** 重置按钮操作 */
resetQuery() {
this.resetForm("queryForm");
this.handleQuery();
},
// 多选框选中数据
handleSelectionChange(selection) {
this.ids = selection.map(item => item.objid)
this.single = selection.length!==1
this.multiple = !selection.length
},
/** 新增按钮操作 */
handleAdd() {
this.reset();
this.open = true;
this.title = "添加客户管理";
},
/** 修改按钮操作 */
handleUpdate(row) {
this.reset();
const objid = row.objid || this.ids
getAccount(objid).then(response => {
this.form = response.data;
this.open = true;
this.title = "修改客户管理";
});
},
/** 提交按钮 */
submitForm() {
this.$refs["form"].validate(valid => {
if (valid) {
if (this.form.objid != null) {
updateAccount(this.form).then(response => {
this.$modal.msgSuccess("修改成功");
this.open = false;
this.getList();
});
} else {
addAccount(this.form).then(response => {
this.$modal.msgSuccess("新增成功");
this.open = false;
this.getList();
});
}
}
});
},
/** 删除按钮操作 */
handleDelete(row) {
const objids = row.objid || this.ids;
this.$modal.confirm('是否确认删除客户管理编号为"' + objids + '"的数据项？').then(function() {
return delAccount(objids);
}).then(() => {
this.getList();
this.$modal.msgSuccess("删除成功");
}).catch(() => {});
},
/** 导出按钮操作 */
handleExport() {
this.download('system/account/export', {
...this.queryParams
}, `account_${new Date().getTime()}.xlsx`)
}
}
};
</script>我把请求客户查询的方法单独摘出来：
/** 查询客户管理列表 */
getList() {
this.loading = true;
listAccount(this.queryParams).then(response => {
this.accountList = response.rows;
this.total = response.total;
this.loading = false;
});
},会发现有一个东西“listAccount”需要引入：
import { listAccount, getAccount, delAccount, addAccount, updateAccount } from "@/api/system/account";然后带大家去看这个路径里面的方法是啥：
往下看了一下代码，哦？原来是针对客户列表数据做“增删改查”操作的js。
import request from '@/utils/request'
// 查询客户管理列表
export function listAccount(query) {
return request({
url: '/system/account/list',
method: 'get',
params: query
})
}
// 查询客户管理详细
export function getAccount(objid) {
return request({
url: '/system/account/' + objid,
method: 'get'
})
}
// 新增客户管理
export function addAccount(data) {
return request({
url: '/system/account',
method: 'post',
data: data
})
}
// 修改客户管理
export function updateAccount(data) {
return request({
url: '/system/account',
method: 'put',
data: data
})
}
// 删除客户管理
export function delAccount(objid) {
return request({
url: '/system/account/' + objid,
method: 'delete'
})
}
// 导出客户管理
export function exportAccount(query) {
return request({
url: '/system/account/export',
method: 'get',
params: query
})
}大家会发现每一个方法里面都有一个“request”:
// 查询客户管理列表
export function listAccount(query) {
return request({
url: ‘/system/account/list’,
method: ‘get’,
params: query
})
}没办法，继续看为啥要因引入这个方法了：
import axios from 'axios'
import { Notification, MessageBox, Message, Loading } from 'element-ui'
import store from '@/store'
import { getToken } from '@/utils/auth'
import errorCode from '@/utils/errorCode'
import { tansParams, blobValidate } from "@/utils/ruoyi";
import { saveAs } from 'file-saver'
let downloadLoadingInstance;
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: process.env.VUE_APP_BASE_API,
// 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
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;
}
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) {
let doms = document.getElementsByClassName('el-message-box')[0]
if(doms === undefined){
MessageBox.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(() => {
store.dispatch('LogOut').then(() => {
location.href = '/index';
})
}).catch(() => {});
}
return Promise.reject('无效的会话，或者会话已过期，请重新登录。')
} else if (code === 500) {
Message({
message: msg,
type: 'error'
})
return Promise.reject(new Error(msg))
} else if (code !== 200) {
Notification.error({
title: msg
})
return Promise.reject('error')
} else {
return 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";
}
Message({
message: message,
type: 'error',
duration: 5 * 1000
})
return Promise.reject(error)
}
)
// 通用下载方法
export function download(url, params, filename) {
downloadLoadingInstance = Loading.service({ text: "正在下载数据，请稍候", spinner: "el-icon-loading", 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'
}).then(async (data) => {
const isLogin = await blobValidate(data);
if (isLogin) {
const blob = new Blob([data])
saveAs(blob, filename)
} else {
Message.error('无效的会话，或者会话已过期，请重新登录。');
}
downloadLoadingInstance.close();
}).catch((r) => {
console.error(r)
Message.error('下载文件出现错误，请联系管理员！')
downloadLoadingInstance.close();
})
}
export default service这个里面的内容就丰富了，其中就引入了这么两个东西：
import axios from ‘axios’
import { Notification, MessageBox, Message, Loading } from ‘element-ui’哈哈，学到了！！！！！！！！！！
经过这么一看，后端接收的可以是json。
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