2024-08-31 02:31PM
1. 查看报错日志
2. 查看源代码
3. 打印报错日志
4. 拆分打印某个报错的参数。
可以看下面这个列子：
在动态排放项目中，新建计算方案的时候同时计算：消防-HFC、房间空调-HFC410A的时候，就报错说：
2024/08/31 14:15:13 [Recovery] 2024/08/31 - 14:15:13 panic recovered:
POST /api/v1/calculation_plans?token=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJsb2dpbiI6ImFkbWluIiwicGFzc3dvcmQiOiJhZG1pbiIsImV4cCI6MTcyNTA5NTY5MywiaXNzIjoiZ2luLWRvbmd0YWlwYWlmYW5nIn0.fPFD5V-xxNbzpjdBDcU9yP7VdrqXIy3XKCwZJMMUqtA HTTP/1.1
Host: localhost:8000
Accept: application/json, text/plain, */*
Accept-Encoding: gzip, deflate, br, zstd
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Connection: keep-alive
Content-Length: 7492
Content-Type: application/json
Origin: http://localhost:3000
Postman-Token: a236a059-e658-472a-89e7-2e3abecd469c
Priority: u=0
Referer: http://localhost:3000/
Sec-Fetch-Dest: empty
Sec-Fetch-Mode: cors
Sec-Fetch-Site: same-site
User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:129.0) Gecko/20100101 Firefox/129.0
runtime error: index out of range [0] with length 0
/home/meiyi/Downloads/go/src/runtime/panic.go:113 (0x4357be)
goPanicIndex: panic(boundsError{x: int64(x), signed: true, y: y, code: boundsIndex})
/home/meiyi/workspace/dongtaipaifang_2_backend/routers/api/v1/calculation_plan.go:561 (0xab8a24)
getParameterForFireControlHFC: ef, _ := strconv.ParseFloat(row[otherTableMapping[0]], 64)
/home/meiyi/workspace/dongtaipaifang_2_backend/routers/api/v1/calculation_plan.go:217 (0xab3cc4)
AddCalculationPlan: returnResult = calculator.CalculateForHfc(getParameterForFireControlHFC(req, myData, materialName, algorithm))
源代码代码内容如下：
// 消防-HFC
539 func getParameterForFireControlHFC(req AddCalculationPlanRequest, myData [][]string, materialName string, algorithm models.CalculationTemplates) [](map[string]interface{}) {
540 parameterForFireControlHFC := make([](map[string]interface{}), 0)
541 otherTableMapping := req.AlgorithmAndParameterColumnMappingForTable2["消防-HFC"][materialName]
542
543 for year := req.StartYear; year <= req.EndYear; year++ {
544 currentYear := year - req.StartYear + 1 // 将年份改为连续数字
545 oneYearParameterForFireControlHFC := make(map[string]interface{}, 0)
546 oneYearParameterForFireControlHFC["year"] = year
547
548 for _, row := range myData {
549 tempYear, _ := strconv.Atoi(row[0])
550 if tempYear == year {
551 consumption, _ := strconv.Atoi(row[1])
552 oneYearParameterForFireControlHFC["consumption"] = consumption
553 }
554 }
555 oneYearParameterForFireControlHFC["life"] = algorithm.Life
556
557 otherTable2 := req.OtherTables["消防-HFC"]["table2"]
558 for _, row := range otherTable2 {
559 tempYear, _ := strconv.Atoi(row[0])
560 if tempYear == currentYear {
561 ef, _ := strconv.ParseFloat(row[otherTableMapping[0]], 64)
562 oneYearParameterForFireControlHFC["ef"] = ef
563 }
564 }
565 parameterForFireControlHFC = append(parameterForFireControlHFC, oneYearParameterForFireControlHFC)
566 }
567 fmt.Println(" === parameterForFireControlHFC:", parameterForFireControlHFC)
568 return parameterForFireControlHFC
569 }
在编译日志中可以看到报错是因为561行 index out of range[0] with length 0
打印561行的代码：
569 if tempYear == currentYear {
570 fmt.Println("=========tempYear22222222:", tempYear)
571 fmt.Println("====otherTableMapping222222:", otherTableMapping)
572 ef, _ := strconv.ParseFloat(row[otherTableMapping[0]], 64)
发现otherTableMapping为[]
=========tempYear22222222: 1
====otherTableMapping222222: []
然后打印otherTableMapping，还有查看otherTableMapping是如何定义的
541 otherTableMapping := req.AlgorithmAndParameterColumnMappingForTable2["消防-HFC"][materialName]
542 fmt.Println("========req.AlgorithmAndParameterColumnMappingForTable2", req.AlgorithmAndParameterColumnMappingForTable2["消防-HFC"][materialName])
打印的结果发现
========req.AlgorithmAndParameterColumnMappingForTable2 []
然后拆分打印 req.AlgorithmAndParameterColumnMappingForTable2["消防-HFC"][materialName]，看看是哪个参数有问题。
542 fmt.Println("========req.AlgorithmAndParameterColumnMappingForTable2", req.AlgorithmAndParameterColumnMappingForTable2["消防-HFC"][materialName])
543 fmt.Println("========2222222222req.AlgorithmAndParameterColumnMappingForTable2", req.AlgorithmAndParameterColumnMappingForTable2)
544 fmt.Println("========333333req.AlgorithmAndParameterColumnMappingForTable2", req.AlgorithmAndParameterColumnMappingForTable2["消防-HFC"])
545 fmt.Println("========materialName", materialName)
打印结果就发现是 materialName 有问题，消防的没有包含HFC-125，所以导致req.AlogrithmAndParameterCoulmnMappingForTable2为[]
========req.AlgorithmAndParameterColumnMappingForTable2 []
========2222222222req.AlgorithmAndParameterColumnMappingForTable2 map[房间空调-HFC410A:map[HFC-125:[1 2 3 4 5]] 消防-HFC:map[HFC-227ea:[1] HFC-236fa:[2]]]
========333333req.AlgorithmAndParameterColumnMappingForTable2 map[HFC-227ea:[1] HFC-236fa:[2]]
========materialName HFC-125
所以就找到了报错的原因。
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