gin解析json格式的数据出错的处理方案

c.BindJSON(&req)

func hello(name string) (str string, err error) {
if name == "" {
err = errors.New("name 不能为空")
return
}
str = fmt.Sprintf("hello: %s", name)
return
}

var name = ""
str, err := hello(name)
if err != nil {
fmt.Println(err.Error())
return
}

alarm.WeChat("错误信息")
return

package main
import (
"errors"
"fmt"
)
func hello(name string) (str string, err error) {
if name == "" {
err = errors.New("name 不能为空")
return
}
str = fmt.Sprintf("hello: %s", name)
return
}
func main() {
var name = ""
fmt.Println("param:", name)
str, err := hello(name)
if err != nil {
fmt.Println(err.Error())
return
}
fmt.Println(str)
}

// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package errors implements functions to manipulate errors.
package errors
// New returns an error that formats as the given text.
func New(text string) error {
return &errorString{text}
}
// errorString is a trivial implementation of error.
type errorString struct {
s string
}
func (e *errorString) Error() string {
return e.s
}

package alarm
import (
"encoding/json"
"fmt"
"ginDemo/common/function"
"path/filepath"
"runtime"
"strings"
)
type errorString struct {
s string
}
type errorInfo struct {
Time string `json:"time"`
Alarm string `json:"alarm"`
Message string `json:"message"`
Filename string `json:"filename"`
Line int `json:"line"`
Funcname string `json:"funcname"`
}
func (e *errorString) Error() string {
return e.s
}
func New (text string) error {
alarm("INFO", text)
return &errorString{text}
}
// 发邮件
func Email (text string) error {
alarm("EMAIL", text)
return &errorString{text}
}
// 发短信
func Sms (text string) error {
alarm("SMS", text)
return &errorString{text}
}
// 发微信
func WeChat (text string) error {
alarm("WX", text)
return &errorString{text}
}
// 告警方法
func alarm(level string, str string) {
// 当前时间
currentTime := function.GetTimeStr()
// 定义 文件名、行号、方法名
fileName, line, functionName := "?", 0 , "?"
pc, fileName, line, ok := runtime.Caller(2)
if ok {
functionName = runtime.FuncForPC(pc).Name()
functionName = filepath.Ext(functionName)
functionName = strings.TrimPrefix(functionName, ".")
}
var msg = errorInfo {
Time : currentTime,
Alarm : level,
Message : str,
Filename : fileName,
Line : line,
Funcname : functionName,
}
jsons, errs := json.Marshal(msg)
if errs != nil {
fmt.Println("json marshal error:", errs)
}
errorJsonInfo := string(jsons)
fmt.Println(errorJsonInfo)
if level == "EMAIL" {
// 执行发邮件
} else if level == "SMS" {
// 执行发短信
} else if level == "WX" {
// 执行发微信
} else if level == "INFO" {
// 执行记日志
}
}

package v1
import (
"fmt"
"ginDemo/common/alarm"
"ginDemo/entity"
"github.com/gin-gonic/gin"
"net/http"
)
func AddProduct(c *gin.Context) {
// 获取 Get 参数
name := c.Query("name")
var res = entity.Result{}
str, err := hello(name)
if err != nil {
res.SetCode(entity.CODE_ERROR)
res.SetMessage(err.Error())
c.JSON(http.StatusOK, res)
c.Abort()
return
}
res.SetCode(entity.CODE_SUCCESS)
res.SetMessage(str)
c.JSON(http.StatusOK, res)
}
func hello(name string) (str string, err error) {
if name == "" {
err = alarm.WeChat("name 不能为空")
return
}
str = fmt.Sprintf("hello: %s", name)
return
}

{
"code": 1,
"msg": "hello: a",
"data": null
}

{
"code": -1,
"msg": "name 不能为空",
"data": null
}

package main
import (
"fmt"
)
func main() {
fmt.Println("-- 1 --")
defer func() {
if r := recover(); r != nil {
fmt.Printf("panic: %s\n", r)
}
fmt.Println("-- 2 --")
}()
panic("i am panic")
}

package main
import (
"fmt"
)
func main() {
fmt.Println("-- 1 --")
defer func() {
if r := recover(); r != nil {
fmt.Printf("panic: %s\n", r)
}
fmt.Println("-- 2 --")
}()
var slice = [] int {1, 2, 3, 4, 5}
slice[6] = 6
}

// Panic 异常
func Panic (text string) error {
alarm("PANIC", text)
return &errorString{text}
}

package recover
import (
"fmt"
"ginDemo/common/alarm"
"github.com/gin-gonic/gin"
)
func Recover() gin.HandlerFunc {
return func(c *gin.Context) {
defer func() {
if r := recover(); r != nil {
alarm.Panic(fmt.Sprintf("%s", r))
}
}()
c.Next()
}
}

r.Use(logger.LoggerToFile(), recover.Recover())
//Use 可以传递多个中间件。

package v1
import (
"fmt"
"ginDemo/entity"
"github.com/gin-gonic/gin"
"net/http"
)
func AddProduct(c *gin.Context) {
// 获取 Get 参数
name := c.Query("name")
var res = entity.Result{}
str, err := hello(name)
if err != nil {
res.SetCode(entity.CODE_ERROR)
res.SetMessage(err.Error())
c.JSON(http.StatusOK, res)
c.Abort()
return
}
res.SetCode(entity.CODE_SUCCESS)
res.SetMessage(str)
c.JSON(http.StatusOK, res)
}
func hello(name string) (str string, err error) {
if name == "" {
// 有意抛出 panic
panic("i am panic")
return
}
str = fmt.Sprintf("hello: %s", name)
return
}

// 上面代码不变
func hello(name string) (str string, err error) {
if name == "" {
// 无意抛出 panic
var slice = [] int {1, 2, 3, 4, 5}
slice[6] = 6
return
}
str = fmt.Sprintf("hello: %s", name)
return
}

// 发微信
func WeChat (text string) error {
alarm("WX", text, 2)
return &errorString{text}
}
// Panic 异常
func Panic (text string) error {
alarm("PANIC", text, 5)
return &errorString{text}
}