我正在尝试通过节点/角度应用程序在现有Azure MSSQL数据库中创建新行。 GET请求正确触发，并且我用来生成数据的表单根据我所知道的内容正确生成了JSON，但是当POST函数触发时，出现以下错误：
Trace: { RequestError: JSON text is not properly formatted. Unexpected character 'o' is found at position 1.
at RequestError (C:\Users\jlea\Desktop\Code\tnplan-boot\node_modules\tedious\lib\errors.js:34:12)
at Parser.<anonymous> (C:\Users\jlea\Desktop\Code\tnplan-boot\node_modules\tedious\lib\connection.js:614:36)
at Parser.emit (events.js:182:13)
at Parser.<anonymous> (C:\Users\jlea\Desktop\Code\tnplan-boot\node_modules\tedious\lib\token\token-stream-parser.js:54:15)
at Parser.emit (events.js:182:13)
at addChunk (C:\Users\jlea\Desktop\Code\tnplan-boot\node_modules\readable-stream\lib\_stream_readable.js:291:12)
at readableAddChunk (C:\Users\jlea\Desktop\Code\tnplan-boot\node_modules\readable-stream\lib\_stream_readable.js:278:11)
at Parser.Readable.push (C:\Users\jlea\Desktop\Code\tnplan-boot\node_modules\readable-stream\lib\_stream_readable.js:245:10)
at Parser.Transform.push (C:\Users\jlea\Desktop\Code\tnplan-boot\node_modules\readable-stream\lib\_stream_transform.js:148:32)
at doneParsing (C:\Users\jlea\Desktop\Code\tnplan-boot\node_modules\tedious\lib\token\stream-parser.js:110:18)
message:
'JSON text is not properly formatted. Unexpected character \'o\' is found at position 1.',
code: 'EREQUEST',
number: 13609,
state: 4,
class: 16,
serverName: 'xxxxxxx',
procName: 'createReport',
lineNumber: 5 }
at Object.fnOnError (C:\Users\jlea\Desktop\Code\tnplan-boot\node_modules\express4-tedious\index.js:104:25)
at Request.userCallback (C:\Users\jlea\Desktop\Code\tnplan-boot\node_modules\express4-tedious\index.js:59:64)
at Request._this.callback (C:\Users\jlea\Desktop\Code\tnplan-boot\node_modules\tedious\lib\request.js:60:27)
at Connection.endOfMessageMarkerReceived (C:\Users\jlea\Desktop\Code\tnplan-boot\node_modules\tedious\lib\connection.js:1922:20)
at Connection.dispatchEvent (C:\Users\jlea\Desktop\Code\tnplan-boot\node_modules\tedious\lib\connection.js:1004:38)
at Parser.<anonymous> (C:\Users\jlea\Desktop\Code\tnplan-boot\node_modules\tedious\lib\connection.js:805:18)
at Parser.emit (events.js:182:13)
at Parser.<anonymous> (C:\Users\jlea\Desktop\Code\tnplan-boot\node_modules\tedious\lib\token\token-stream-parser.js:54:15)
at Parser.emit (events.js:182:13)
at addChunk (C:\Users\jlea\Desktop\Code\tnplan-boot\node_modules\readable-stream\lib\_stream_readable.js:291:12)
events.js:167
throw er; // Unhandled 'error' event
^
这是我的app.js代码：
const express = require('express');
const config = require('config');
const bodyParser = require('body-parser');
const tediousExpress = require('express4-tedious');
const cors = require('cors');
const path = require('path');
const app = express();
app.use(function (req, res, next) {
req.sql = tediousExpress(config.get('connection'));
next();
});
const corsOptions = {
origin: '*',
optionsSuccessStatus: 200
};
app.use(express.static(__dirname + '/dist/tnplan-boot'));
app.use(bodyParser.json());
app.options('*', cors(corsOptions));
app.use('/monthlyReport', require('./routes/monthlyReport'));
// "index" route, which serves the Angular app
app.get('/', function (req, res) {
res.sendFile(path.join(__dirname, '/dist/tnplan-boot/index.html'));
});
// catch 404 and forward to error handler
app.use(function (req, res, next) {
const err = new Error('Not Found: ' + req.method + ":" + req.originalUrl);
err.status = 404;
next(err);
});
app.set('port', process.env.PORT || 8080);
const server = app.listen(app.get('port'), function () {
console.log('Express server listening on port ' + server.address().port);
});
module.exports = app;
和我的sql路由代码：
const router = require('express').Router();
const TYPES = require('tedious').TYPES;
/* GET reports. */
router.get('/', function (req, res) {
req.sql("select * from jacksonwaste for json path")
.into(res, '[]');
});
/* GET single report. */
router.get('/:id', function (req, res) {
req.sql("select * from jacksonwaste where id = @id for json path, without_array_wrapper")
.param('id', req.params.id, TYPES.Int)
.into(res, '{}');
});
/* POST create report. */
router.post('/', function (req, res) {
req.sql("exec createReport @report")
.param('report', req.body, TYPES.NvarChar)
.exec(res)
console.log(req.body);
});
/* PUT update report. */
router.put('/:id', function (req, res) {
req.sql("exec updateReport @id, @report")
.param('id', req.params.id, TYPES.Int)
.param('report', req.body, TYPES.NvarChar)
.exec(res);
});
/* DELETE single report. */
router.delete('/:id', function (req, res) {
req.sql("delete from jacksonwaste where id = @id")
.param('id', req.params.id, TYPES.Int)
.exec(res);
});
module.exports = router;
最后，我的mssql存储过程代码：
/****** Object: StoredProcedure [dbo].[createReport] Script Date: 8/15/2018 9:13:31 AM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER procedure [dbo].[createReport](@report nvarchar(max))
as begin
SET NOCOUNT ON
insert into jacksonwaste (reportuser, reportdate, percentcomp, err, errdate, acquisition, acqdate, pns, pnsdate, bidtabs, bidtabsdate, constructionstart, constartdate, constructionend, conenddate, monitored, monitorready,
contractoractivity, lastcafsubmission, mostrecentinvoice, phases, phaseupdate, hasoccured, willoccur, issues, tnecdhelp)
select *
from OPENJSON(@report)
WITH (
reportuser nvarchar(128),
reportdate date,
percentcomp int,
err bit,
errdate date,
acquisition bit,
acqdate date,
pns bit,
pnsdate date,
bidtabs bit,
bidtabsdate date,
constructionstart bit,
constartdate date,
constructionend bit,
conenddate date,
monitored bit,
monitorready bit,
contractoractivity bit,
lastcafsubmission date,
mostrecentinvoice date,
phases bit,
phaseupdate nvarchar(1000),
hasoccured nvarchar(1000),
willoccur nvarchar(1000),
issues nvarchar(1000),
tnecdhelp nvarchar(1000)
)
end
编辑：添加了传递到sql请求的JSON对象，以显示没有可见的意外字符：
{ reportuser: 'john',
reportdate: '2018-08-11',
percentcomp: '4',
err: true,
pns: true,
pnsdate: '2018-08-04',
errdate: '2018-08-16',
constructionstart: true,
constartdate: '2018-08-29',
lastcafsubmission: '2018-08-23',
mostrecentinvoice: '2018-08-24',
phaseupdate: 'test',
hasoccured: 'test',
willoccur: 'test',
issues: 'test',
tnecdhelp: 'test' }
我要去哪里错了？
答案 0 :(得分：0)
记录下来，希望这对以后的人有所帮助：
我最近遇到了一个非常相似的问题（完全相同的RequestError），发现我将JSON作为对象传递，而express4乏味的则期望一个字符串。 JSON.stringify(req.body)达到了目的。
换句话说，更改您的等价物
req.sql("exec updateReport @id, @report")
.param('id', req.params.id, TYPES.Int)
.param('report', req.body, TYPES.NvarChar)
.exec(res);
到
req.sql("exec updateReport @id, @report")
.param('id', req.params.id, TYPES.Int)
.param('report', JSON.stringify(req.body), TYPES.NvarChar)
.exec(res);
解决了我的问题。