[网络协议]不需要web服务器如何构建一个可以内部跨域的http服务(Vue+Flask)

写在前面

我的需求：

• 一个很老的项目，中游服务,webservice接口，需要测试，没有页面，需要我写一个小工具来测试,我准备用一个web来实现。

我需要解决的问题:

• 这个小工具其实类似测试工具，soup UI或者postman，需要实现以下功能：
  • 满足跨域请求，尽可能的轻量。
  • 满足发送xml和json作为报文请求
  • 可以做简单的自动化压力测试
  • 可以存储所有的的接口报文信息作为发送请求
  • 可以修改设置请求url，选择存在的url路径
  • 可以展示少量的请求报文和响应报文历史数据
  • 做好的工具不需要环境可以在机器上直接运行，类似windows上的*.exe

我是是这样解决的：

• 在技术上，涉及到的技术栈： Vue + Flask，主要是轻量
• 数据没有持久化，因为也没有多少数据，只是简单的使用
• 前后端分离的方式开发，打包方式:前端编译好直接放到后端的指定文件夹下,通过python的PyInstaller打包为exe
• 直接运行exe就会在window发布为一个服务。不需要部署。

需要注意的问题

• 前后端的整合
• 使用PyInstaller的打包问题
• 需要知道一点Vue和python.

人生两苦，想要却不得，拥有却失去。 ----- 烽火戏诸侯《雪中悍刀行》

开发环境准备

这里不多讲,这是我的版本：

前端

PS > npm -v
6.12.1
PS > node -v
v12.13.1
PS > vue  -V
3.7.0

后端

PS > python -V
Python 3.9.0
PS > pip -V       
pip 20.2.3 from d:\python\python310\lib\site-packages\pip (python 3.9)
PS > PyInstaller -v
4.7

前端把需要测试的接口地址，报文通过axios 发送给后端Flask服务，Flask服务通过 requests 模块实现测试

测试工具功能：

–

xml，json 格式的报文发送，支持http，soap协议 的方式

支持请求报文路径自定义及相关配置

支持测试接口历史的查看(少量)

支持简单压力测试，自定义时间间隔,轮询调用接口方式

获取报文

二、编码

后端编码

后端很简单，需要注意的是，设置静态资源的加载路径，以及设置跨域

from flask import Flask, jsonify,request,render_template
from flask_cors import CORS  #跨域问题
import requests
import time


# configuration
DEBUG = True

# instantiate the app
app = Flask(__name__,static_folder = "./dist/static", template_folder = "./dist")
app.config.from_object(__name__)


# enable CORS
CORS(app, resources={r'/*': {'origins': '*'}})

headersXml = {
    "Content-Type": "Content-Type: text/xml;charset=UTF-8",
    "Connection": "keep-alive",
    }
headersJson = {
    "Content-Type": "application/json;charset=UTF-8",
    "Connection": "keep-alive",
    }    
SendData = []


# sanity check route
@app.route('/test', methods=['POST','GET'])
def uag_test():
    response = ""
    if request.method == 'POST':
        post_data = request.get_json()
        data = post_data.get("content")
        url = post_data.get("url")
        id = post_data.get("id")
        nameCose = post_data.get("nameCose")
        type = post_data.get("type")
        date = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime())
        print("============================================",time.strftime("%Y-%m-%d %H:%M:%S", time.localtime()),"================================================")
        print("请求的URL：",url)
        print("请求的报文：",data)
        print("请求的ID：",id)
        print("请求的日期：",date)
        print("请求的报文类型：",type)
        try:
            if type == 1 :
                responseDate=requests.post(url, headers=headersXml, data=data)
                response = responseDate.text
            if type == 2 :
                responseDate=requests.post(url, headers=headersJson, data=data)
                response = responseDate.text
        except:
            return jsonify("服务器异常！")
   
       
        print("============================================",time.strftime("%Y-%m-%d %H:%M:%S", time.localtime()),"================================================")
        
        #response = etree.fromstring(response.encode('utf-8'))
        #htmlelement = etree.XML(etree.tostring(response, pretty_print = True,encoding='utf-8'))
        #print(etree.tostring(htmlelement))
        SendData.insert(0,{
            "id":id,
            "url":url,
            "data":data,
            "response":response ,
            "date":date,
            "nameCose":nameCose
        })
        if len(SendData) > 5 :
            SendData.pop()
    return jsonify(response)


# sanity check route
@app.route("/init",methods=['GET','POST'])
def uag_init():
    print("获取全部数据")
    return jsonify(SendData)

@app.route('/', defaults={'path': ''})
@app.route('/<path:path>')
def catch_all(path):
    return render_template("index.html")


if __name__ == '__main__':
    app.run(host='127.0.0.1', port=8085,debug=DEBUG)

前端代码

vie.config.js 代码

  
let proxyObj = {};

proxyObj['/'] = {
    target: 'http://localhost:8086',
    changeOrigin: true,
    pathRewrite: {
        '^/': ''
    }
}
module.exports = {
    devServer: {
        host: '127.0.0.1',
        proxy: proxyObj,
    },
    lintOnSave:false,//关闭eslintre语法检查
    assetsDir: 'static/',


}

main.js

import Vue from 'vue'
import App from './App.vue'

import ElementUI from 'element-ui';
import 'element-ui/lib/theme-chalk/index.css';
import axios from 'axios'
import VueAxios from 'vue-axios'





Vue.config.productionTip = false

Vue.use(ElementUI);
Vue.use(VueAxios, axios)

new Vue({
  render: h => h(App),
}).$mount('#app')

router.js

import Vue from 'vue';
import Router from 'vue-router';
import Ping from './components/Ping.vue';
import App from './App.vue';

Vue.use(Router);

export default new Router({
  mode: 'history',
  base: process.env.BASE_URL,
  routes: [
    {
      path: '/ping',
      name: 'Ping',
      component: Ping,
    },
    {
      path: '/',
      name: 'App',
      component: App,
    }
  ],
});

vue的相关页面代码在最后

三、前后端整合

前后端目录对应

PyInstaller打包，运行测试

这里打包是通过PyInstaller来完成的，如果为windows系统打包，则为一个单独的app.exe文件，windows上运行直接双击。linux的话，是一个可以在机器上直接运行的二进制文件，linux上运行通过./app来运行。

当然，PyInstaller可以直接通过命令行的方式来运行，也可以通过py文件的方式，下面是一个打包的脚本。

from PyInstaller.__main__ import run
#### 打包文件直接执行
if __name__ == '__main__':
    opts = ['app.py',  # 主程序文件
            '-F',  # 打包单文件
            '--icon=favicon.ico',  # 可执行程序图标
            '--add-data=dist;dist',  # 打包包含的html页面
            '--add-data=dist\\static;dist\\static',  # 打包包含的静态资
            ]

    run(opts)

直接运行就可以打包了。

python package.py

这里要说明一下文件对应的目录位置

对应的打包文件
直接发布一个服务服务
整个文件目录

app.vue 代码

<template>
  <div id="app">
    <el-container>
      <el-header><h1>接口测试小工具</h1></el-header>
      <el-main class="main-class">
        <div class="main-up-class">
          <div class="search-class">
            <!-- 搜索框 -->
            <div class="search-class-up">
              <div>
                <el-select
                  v-model="ipValue"
                  placeholder="IP"
                  style="width: 300px"
                >
                  <el-option
                    v-for="item in optionsIp"
                    :key="item"
                    :label="item"
                    :value="item"
                  >
                  </el-option>
                </el-select>
              </div>
              <div>
                <el-select
                  v-model="hostValue"
                  placeholder="端口"
                  style="width: 200px"
                >
                  <el-option
                    v-for="item in optionsHost "
                    :key="item"
                    :label="item"
                    :value="item"
                  >
                  </el-option>
                </el-select>
              </div>
              <div>
                <el-select
                  v-model="pathValue"
                  placeholder="请求路径"
                  style="width: 480px"
                >
                  <el-option
                    v-for="item in optionsPath"
                    :key="item"
                    :label="item"
                    :value="item"
                  >
                  </el-option>
                </el-select>
              </div>
            </div>
            <div class="search-class-next">
              <el-input placeholder="输入完整路径" clearable v-model="urlValue">
                <el-button slot="append" @click = "testNet">测试网络</el-button>
              </el-input>
            </div>
          </div>
          <div class="active-class">
            <el-collapse v-model="activeNames" @change="handleChange">
              <el-collapse-item title="请求响应报文" name="1">
                <div class="context-class">
                  <el-card
                    v-loading="loading"
                    shadow="never"
                    class="context-card-class"
                  >
                    <div slot="header" class="clearfix">
                      <span>请求报文</span>
                      <el-button
                        style="float: right; padding: 3px 0px 2px"
                        type="text"
                        @click="getPost"
                      >
                        请求
                      </el-button>
                      <el-button
                        style="float: right; padding: 3px "
                        type="text"
                        @click="cleartextareaRequest"
                      >
                        清空
                      </el-button>
                      <el-button
                        style="float: right; padding: 3px 0"
                        type="text"
                        @click="RequestTxt"
                      >
                        获取报文
                      </el-button>
                      <el-radio-group v-model="radio" style="float: right; padding: 3px 0">
                        <el-radio :label="1">text/xml</el-radio>
                        <el-radio :label="2">application/json</el-radio>
                      </el-radio-group>
                    </div>

                    <el-input
                      type="textarea"
                      :autosize="{ minRows: 17, maxRows: 17 }"
                      placeholder="请输入请求"
                      v-model="textareaRequest"
                      show-word-limit
                      autofocus="true"
                    >
                    </el-input>
                  </el-card>
                  <el-card shadow="never" class="context-card-class">
                    <div slot="header" class="clearfix">
                      <span>响应报文</span>
                      <el-button
                        style="float: right; padding: 3px 0"
                        type="text"
                        @click="clearTextareaResponse"
                        >清空</el-button
                      >
                    </div>
                    <el-input
                      type="textarea"
                      :autosize="{ minRows: 17, maxRows: 17 }"
                      placeholder=""
                      v-model="textareaResponse"
                      show-word-limit
                      autofocus="true"
                    >
                    </el-input>
                  </el-card>
                </div>
              </el-collapse-item>
              <el-collapse-item title="测试接口历史" name="2">
                <div class="list-class">
                  <template>
                    <el-table :data="sendDate" border style="width: 100%" >
                      <el-table-column fixed prop="nameCose" label="接口编码" width="200">
                      </el-table-column>
                      <el-table-column prop="url" label="url路径">
                      </el-table-column>
                      <el-table-column prop="date" label="日期" width="150">
                      </el-table-column>
                      <el-table-column fixed="right" label="操作" width="150">
                        <template slot-scope="scope">
                          <el-button
                            @click="handleClickRequest(scope.row)"
                            type="text"
                            size="small"
                            >请求报文</el-button
                          >
                          <el-button
                            @click="handleClickResponse(scope.row)"
                            type="text"
                            size="small"
                            >响应报文</el-button
                          >
                        </template>
                      </el-table-column>
                    </el-table>
                  </template>
                </div>
              </el-collapse-item>
              <el-collapse-item title="测试接口配置" name="3">
                <div class="input-with-select-add">
                  <el-input placeholder="IP添加" v-model="tepmIp" @keyup.enter.native="addIp" >
                  </el-input>
                  <el-input placeholder="端口添加" v-model="tempHost" @keyup.enter.native="addHost">
                  </el-input>
                  <el-input placeholder="路径添加" v-model="tepmValurl" @keyup.enter.native="addValurl">
                  </el-input>
            
                </div>
              </el-collapse-item>
              <el-collapse-item title="压力测试" name="4">
                <div class="input-with-select-add">
                  
                  <el-input-number label="调用间隔时间(s)" v-model="num"  @change="handleChange" :min="1" :max="10"></el-input-number>
                  <el-button @click="testing()" type="primary">{{testmsg}} {{testmsg !="开始测试"?"秒":""}}</el-button>
                  <el-button @click="testingon()" type="primary">结束测试</el-button>
                </div>
              </el-collapse-item>
            </el-collapse>
          </div>
        </div>
      </el-main>
    </el-container>
    <el-dialog title="报文" :visible.sync="dialogTableVisible">
      <code>{{ msg }}</code>
    </el-dialog>
    <el-dialog title="请求报文列表" :visible.sync="dialogTableVisible_req">
      <el-tag v-for="item in interData" 
    
    :key="item.key" style="margin: 5px;width: 250px;"
    effect="plain"  @click="clickInterData(item)">
    {{ item.key }}
  </el-tag>
    </el-dialog>
  </div>
</template>

<script>
import axios from "axios";
import { v4 as uuidv4 } from "uuid";



export default {
  name: "App",
  data() {
    return {
      radio:1,
      testmsg:"开始测试",
      olddate:'',
      setInterval_:'',
      num:1,
      tepmIp:'',
      tempHost:'',
      tepmValurl:'',
      dialogTableVisible_req:false,
      dialogTableVisible: false,
      msg: "",
      nameCose:'',
      hostValue: "",
      ipValue: "",
      pathValue: "",
      activeNames: ["4"],
      select: "",
      urlValue: "",
      sessionStorage:"",
      optionsHost: ["30066"],
      textareaRequest: "",
      textareaResponse: "",
      optionsIp: ["10.218.7.201"],
      sendDate: [],
      interData:new Array(),
      optionsPath: [
        "/app/baseurl/CrmService?wsdl",
        "/app/baseurl/UaService?wsdl",
        "/app/baseurl/AccountSynchro?wsdl",
        "/app/baseurl/AccountStatusIf?wsdl",
        "/app/baseurl/BindingSynchro?wsdl",
        "/app/baseurl/BusinessAccountQuery?wsdl"
      ],
      loading: false,
    };
  },
  created() {
    //这是存放报文  
    this.sessionStorage = window.sessionStorage;
    this.sessionStorage.setItem("CAP04003新增产品", '<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ua="http://www.mbossuac.com.cn/ua">\n。。。。。。</soapenv:Envelope>');
},
  mounted() {
    let len = this.sessionStorage.length;  
    console.log("接口条数"+len) 
    var gridData_ = new Array(); 
    for(let i = 0; i < len; i++) {
        let getKey = this.sessionStorage.key(i);
        var getVal = this.sessionStorage.getItem(getKey);
        gridData_[i] = {
            'key': getKey,
            'val': getVal,
        }
    }
    
    this.interData = gridData_;
    console.log(gridData_); 
  
  },
  methods: {
    handleChangetest(){
      
    },
    testingon(){
      clearInterval(this.setInterval_);
      this.testmsg ="开始测试";
    },
    testing(){
      this.activeNames=["4"];
      this.testmsg = 0;
      this.setInterval_ =   setInterval(_ => {this.getPost();this.testmsg=this.testmsg+this.num},this.num * 1000);   
      
    },
    addValurl(){
      if(this.tepmValurl){
        this.optionsPath.push(this.tepmValurl);
        this.tepmValurl ='';
        this.$notify({
          title: "添加成功",
        });
      }else{ 
        this.$notify({
          title: "数据为空",
          type: "warning",
        });
      }
    },
    addHost(){
      if(this.tempHost){
        this.optionsHost.push(this.tempHost);
        this.$notify({
          title: "添加成功",
        });
        this.tempHost='';
      }else{ 
        this.$notify({
          title: "数据为空",
          type: "warning",
        });
      }
    },
    addIp(){
      console.log("fsdf")
      if(this.tepmIp){
      this.optionsIp.push(this.tepmIp);
      this.tepmIp='';
      this.$notify({
          title: "添加成功",
        });
      }else{ 
        this.$notify({
          title: "数据为空",
          type: "warning",
        });
      }
    },
    testNet(){
      window.open(this.urlValue);
    },
    clickInterData(val){
        console.log(val);
        this.textareaRequest = val.val;
        this.nameCose = val.key;
        this.dialogTableVisible_req=false; 
    },
    RequestTxt(){
      this.dialogTableVisible_req=true;
    },
    handleClickRequest(row) {
      this.msg = row.data;
      this.dialogTableVisible = true;
      console.log(row);
    },
    handleClickResponse(row) {
      this.msg = row.response;
      this.dialogTableVisible = true;
      console.log(row);
    },
    clearTextareaResponse() {
      console.log("清空数据");
      this.textareaResponse = "";
    },
    cleartextareaRequest() {
      console.log("清空数据");
      this.textareaRequest = "";
    },
    getinit() {
      axios({
        url: "/init",
        method: "get",
      })
        .then((res) => {
          this.sendDate = res.data;
          console.log(this.sendDate);
        })
        .catch((error) => {
          // eslint-disable-next-line
          console.error(error);
        });
    },
    getPost() {
      if (!this.urlValue) {
        this.$notify({
          title: "测试路径为空",
          type: "warning",
        });
        return;
      }
      let path =   this.urlValue;
      console.log("开始调用接口："+path)
      this.loading = true;
      axios({
        url: "/test",
        method: "post",
        data: {
          content: this.textareaRequest,
          url: path,
          id: uuidv4().toString(),
          nameCose:this.nameCose,
          type:this.radio,
        },
      }).then((res) => {
          console.log(uuidv4());
          console.log(res)

          this.textareaResponse = res.data;
          
          this.loading = false;
          this.getinit();
          this.$notify({
          title: this.nameCose +" "+this.getCurrentTime(),
          type: "success",
        });
        })
        .catch((error) => {
          // eslint-disable-next-line
          this.loading = false;
          console.error(error);
          this.$notify({
          title: "请求异常",
          type: "error",
        });
        return;
        });
    },
    getCurrentTime() {
        //获取当前时间并打印
    　　let yy = new Date().getFullYear();
    　　let mm = new Date().getMonth()+1;
    　　let dd = new Date().getDate();
    　　let hh = new Date().getHours();
    　　let mf = new Date().getMinutes()<10 ? '0'+new Date().getMinutes() : new Date().getMinutes();
    　　let ss = new Date().getSeconds()<10 ? '0'+new Date().getSeconds() : new Date().getSeconds();
    　　return  yy+'年'+mm+'月'+dd+'日'+hh+':'+mf+':'+ss;
    },
    handleChange(val) {
      console.log(val);
    },
  },
  watch: {
    hostValue: {
      // eslint-disable-next-line
      handler(newName, oldName) {
        let m = this;
        m.urlValue ="http://"+ m.ipValue + ":" + m.hostValue + m.pathValue;
        // eslint-disable-next-line
        immediate: true;
      },
    },
    ipValue: {
      // eslint-disable-next-line
      handler(newName, oldName) {
        let m = this;
        m.urlValue ="http://"+ m.ipValue + ":" + m.hostValue + m.pathValue;
        // eslint-disable-next-line
        immediate: true;
      },
    },
    pathValue: {
      // eslint-disable-next-line
      handler(newName, oldName) {
        let m = this;
        m.urlValue ="http://"+ m.ipValue + ":" + m.hostValue + m.pathValue;
        // eslint-disable-next-line
        immediate: true;
      },
    },
  },
};
</script>

<style>
#app {
  font-family: Avenir, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-top: 60px;
}
html,
body,
#app,
.el-container {
  /*设置内部填充为0，几个布局元素之间没有间距*/
  padding: 0px;
  /*外部间距也是如此设置*/
  margin: 0px;
  /*统一设置高度为100%*/
  height: 100%;
}

.el-select .el-input {
  width: 100%;
}
.input-with-select .el-input-group__prepend {
  background-color: #fff;
}
.main-up-class {
  width: 1000px;
}
.http-w {
  width: 20px;
}
.search-class {
  width: 1000px;
  height: 90px;
}
.search-class-up {
  margin: 10px;
  display: flex;
  justify-content: space-between;
}
.search-class-next {
  margin: 10px;
}
.active-class {
  margin: 10px;
}
.context-class {
  display: flex;
  justify-content: space-between;
  height: 405px;
}
.context-card-class {
  height: 100%;
  width: 100%;
  margin: 5px;
}
.el-card__header {
  padding: 5px 6px !important;
}
.el-card__body {
  padding: 1px !important;
}
.el-textarea__inner {
  resize: none !important;
}
.main-class {
  display: flex !important;
  justify-content: center !important;
  border-radius: 5px;

}
pre,
code {
  font-size: 0.85em;
  font-family: Consolas, Inconsolata, Courier, monospace;
}

code {
  margin: 0 0.15em;
  padding: 0 0.3em;
  white-space: pre-wrap;
  border: 1px solid #eaeaea;
  background-color: #f8f8f8;
  border-radius: 3px;
  display: inline; /* added to fix Yahoo block display of inline code */
}

pre {
  font-size: 1em;
  line-height: 1em;
}

pre code {
  white-space: pre;
  overflow: auto; /* fixes issue #70: Firefox/Thunderbird: Code blocks with horizontal scroll would have bad background colour */
  border-radius: 3px;
  border: 1px solid #ccc;
  padding: 0.5em 0.7em;
  display: block !important; /* added to counteract the Yahoo-specific `code` rule; without this, code blocks in Blogger are broken */
}

/* In edit mode, Wordpress uses a `* { font: ...;} rule+style that makes highlighted
    code look non-monospace. This rule will override it. */
.markdown-here-wrapper[data-md-url*="wordpress."] code span {
  font: inherit;
}

/* Wordpress adds a grey background to `pre` elements that doesn't go well with
    our syntax highlighting. */
.markdown-here-wrapper[data-md-url*="wordpress."] pre {
  background-color: transparent;
}
.input-with-select-add{
  display: flex !important;
  justify-content: center !important;
  margin: 10px;
}
</style>