修改了main.go，重新编译可执行文件，发现falcon自带的监控项告警发送报错，但是redismon的告警可以通过微信发出来

[phantoo0809]

echo: http: panic serving 127.0.0.1:36538: runtime error: index out of range goroutine 157 [running]: net/http.(conn).serve.func1(0xc420180640) /usr/lib/golang/src/net/http/server.go:1721 +0xd0 panic(0x7023e0, 0x8da480) /usr/lib/golang/src/runtime/panic.go:489 +0x2cf main.SendMsg(0x8be260, 0xc420176150, 0xc420034b58, 0x4c5212) /home/work/open-falcon/chat/main.go:101 +0xdec github.com/labstack/echo.(Echo).Add.func1(0x8be260, 0xc420176150, 0x8e4c20, 0x7fec42475000) /usr/lib/golang/src/github.com/labstack/echo/echo.go:479 +0x90 github.com/labstack/echo/middleware.LoggerWithConfig.func2.1(0x8be260, 0xc420176150, 0x0, 0x0) /usr/lib/golang/src/github.com/labstack/echo/middleware/logger.go:116 +0x12b github.com/labstack/echo.(Echo).ServeHTTP.func1(0x8be260, 0xc420176150, 0xc42007b238, 0x75cea0) /usr/lib/golang/src/github.com/labstack/echo/echo.go:576 +0x10e github.com/labstack/echo.(Echo).ServeHTTP(0xc42007b1e0, 0x8b7960, 0xc4201aa540, 0xc42015e100) /usr/lib/golang/src/github.com/labstack/echo/echo.go:585 +0x2a9 net/http.serverHandler.ServeHTTP(0xc4200a4420, 0x8b7960, 0xc4201aa540, 0xc42015e100) /usr/lib/golang/src/net/http/server.go:2568 +0x92 net/http.(conn).serve(0xc420180640, 0x8b7fa0, 0xc420326240) /usr/lib/golang/src/net/http/server.go:1825 +0x612 created by net/http.(Server).Serve /usr/lib/golang/src/net/http/server.go:2668 +0x2ce

上面是报错，请问这是什么原因呢？

[yanjunhui]

echo: http: panic serving 127.0.0.1:36538: runtime error: index out of range /home/work/open-falcon/chat/main.go:101 +0xdec
看错误提示 大概是 数组超界了 但是101行代码并没有数组取值啊 你是修改源码了吗

[phantoo0809]

是的，我就是在main.go中把告警内容重新组合了，添加了如下部分： //告警内容格式修整

    level:="告警级别: "+strings.FieldsFunc(text.Content, split)[0]
    status:="采集项状态: "+strings.FieldsFunc(text.Content, split)[1]
    macinfo:="服务器信息: "+strings.FieldsFunc(text.Content, split)[2]
    warn:=strings.FieldsFunc(text.Content, split)[3]
    warn=strings.Replace(warn, " ", "\n", -1)
    caijixiang:="采集项: "+strings.FieldsFunc(warn, split)[2]+" "+strings.FieldsFunc(warn, split)[3]
    value:="采集值: "+strings.FieldsFunc(warn, split)[4]+" "+strings.FieldsFunc(warn, split)[1]
    warninfo:="采集项问题信息: "+strings.FieldsFunc(warn, split)[0]
    time:="时间："+strings.FieldsFunc(text.Content, split)[4]
    info:=status+"\n"+macinfo+"\n"+caijixiang+"\n"+value+"\n"+warninfo+"\n"+level+"\n"+time

    var co Content
    co.Content=info

    msg := MsgPost{
            ToUser:  toUser,
            MsgType: "text",
            AgentID: StringToInt(agentId),
            Text:    co,
    }

[yanjunhui]

数组取值之前 先判断数组元素数量 比如你要取warn[3]的值 首先就要判断 warn是否大于或者等于4 这样才能避免 数组超界导致的panic

[phantoo0809]

是需要先判断warn的长度么？

[yanjunhui]

这就是golang基础语法的问题了 我们就不继续沟通了 可以再多看下基础

[phantoo0809]

好的，谢谢