错误：没有参数$ 1

当我尝试使用node-postgres客户端运行此代码时，出现“错误：没有参数$ 1”：

app.post('/newcause', function (req,res){ console.log(req.body); var g; var r = []; for (g in req.body) { r[g]=req.body[g]; console.log('r[g] is ' + r[g]); } client = pg.connect(connectionString, function(err, client, done){ if(err) console.log(err); client.query('INSERT INTO causes (cause_name, goal, organization, sponsor, submitter) VALUES ($1,$2,$3,$4,$5)', r, function(err){ console.log('This is r' + r) if (err) console.log(err); }); }); }); 

有什么build议？

PS，这是完整的错误陈述：

 { [error: there is no parameter $1] name: 'error', length: 87, severity: 'ERROR', code: '42P02', detail: undefined, hint: undefined, position: '81', internalPosition: undefined, internalQuery: undefined, where: undefined, file: 'parse_expr.c', line: '812', routine: 'transformParamRef' } 

Answer 1

执行查询的错误意味着r没有正确填充。 值得明确的是用户input，所以你的系统不会在下游（在查询中）而不是在问题根上引发错误：

 app.post('/newcause', function (req,res){ console.log(req.body); var g; var r = []; r.push(req.body.causename, req.body.Goal, req.body.Organization, req.body.sponsor, req.body.submitterEmail); client = pg.connect(connectionString, function(err, client, done){ if(err) console.log(err); client.query('INSERT INTO causes (cause_name, goal, organization, sponsor, submitter) VALUES ($1,$2,$3,$4,$5)', r, function(err){ console.log('This is r' + r.toString()) if (err) console.log(err); }); }); }); 

另外值得一提的是，在提交文章中标准化你的variables名称大小可能是个好主意。