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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<script src="https://cdn.bootcss.com/axios/0.18.0/axios.js"></script>
<script src="./SCRIPTS/protobuf.js"></script>
<script src="./node_modules/protobufjs/dist/light/protobuf.js"></script>
<script src="./SCRIPTS/proto/proto.js"></script>
</head>
<body>
<button>start</button>
<script>
const BASEURL = 'http://localhost:8081';
//axios配置
const httpService = axios.create({
timeout:45000,
method:'post',
headers:{
'X-Requested-Width':'XMLHttpRequest',
'Content-Type':'application/octet-stream'
},
//responseType:'arraybuffer',//此处不能用arraybuffer 否则会将返回的数据转化为arraybuffer
responseType:'json',
withCredentials:false
});
//request start
var protoRoot = $root;//生产的proto.js 对象
//请求体message
const PBMessageRequest = protoRoot.lookup('framework.PBMessageRequest');
//响应体message
const PBMessageResponse = protoRoot.lookup('framework.PBMessageResponse');
const apiVersion = '1.0.0';
const token = 'my_token';
function getMessageTypeValue(msgType){
const PBMessageType = protoRoot.lookup('framework.PBMessageType');
const ret = PBMessageType.values[msgType];
return ret;
}
/**
*
* @param {*} msgType 接口名称
* @param {*} requestBody 请求体参数
* @param {*} responseType 返回值
*
*/
function request(msgType,requestBody,responseType){
//得到api的枚举值
const _msgType = getMessageTypeValue(msgType);
//请求需要的数据
const reqData = {
timestamp:new Date().getTime(),
type:_msgType,
version:apiVersion,
messageData:requestBody,
token:token
}
//将对象序列化成请求体实例
const req = PBMessageRequest.create(reqData);
console.log(req);
console.log(transformRequest(req));
//调用axios发起请求
//这里用到axios的配置项,transformRequest和transformResponse
//transformRequest 发起请求时,调用transformRequest方法,目的是将req转换成二进制
//transformResponse 对返回的数据进行处理,目的是将二进制转换成真正的json
return httpService.post(BASEURL+'/api',req,{
transformRequest,
transformResponse:transformResponseFactory(responseType)
}).then(({data,status})=>{
//对请求做处理
if(status!==200){
const err = new Error('服务器异常');
throw err;
}
console.log(data,'myData');
return data;
},(err)=>{
throw err;
});
}
//将数据encode成二进制,encode是protobuf.js自带的方法
function transformRequest(data){
return PBMessageRequest.encode(data).finish();
}
function isArrayBuffer(obj){
console.log(obj);
console.log(Object.prototype.toString.call((obj)));
return Object.prototype.toString.call(obj) === "[object Array]";
// return Object.prototype.toString.call(obj) === "[object ArrayBuffer]";
}
function transformResponseFactory(responseType){
return function transformResponse(rawResponse){
rawResponse = rawResponse.data;
//判断response是否是arraybuffer
if(rawResponse==null||!isArrayBuffer(rawResponse)){
return rawResponse;
}
try {
// const model = protoRoot.lookup(responseType);
// console.log(model,'model');
// let rrr = model.decode(rawResponse);
// console.log(rrr)
// return;
// debugger;
const buf = protobuf.util.newBuffer(rawResponse);
//decode响应体
const decodedResponse = PBMessageResponse.decode(buf);
// console.log(buf);
// console.log(decodedResponse);
if(decodedResponse.messageData&&responseType){
const model = protoRoot.lookup(responseType);
console.log(model,'model');
decodedResponse.messageData = model.decode(decodedResponse.messageData);
}
return decodedResponse;
}catch(err){
return err;
}
}
}
request.create = function(protoName,obj){
const pbConstruct = protoRoot.lookup(protoName);
return pbConstruct.encode(obj).finish();
}
//request start
//params 是obj类型的请求参数
//school.PBStudentListReq 是定义好的请求体model
//school.PBStudentListRsp 是定义好的响应model
//getStudentList是接口名称
function getStudentList(params){
const req = request.create('school.PBStudentListReq',params);
console.log(req);
return request('getStudentList',req,'school.PBStudent')
}
//后面如果再添加接口直接以此类推
// function getStudentById(id){
// const req = ...
// return request(...)
// }
//调用方法
function _getStudentList(){
const req = {
limit:20,
offset:0,
}
console.log(getStudentList(req));
getStudentList(req).then((res)=>{
console.log(res);
}).catch((err)=>{
console.error(err);
});
}
_getStudentList();
</script>
</body>
</html>