本文主要是介绍JOSN文件解析，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
JSON(JavaScript Object Notation, JS 对象简谱) 是一种轻量级的数据交换格式。一般通过网页将数据下发，通过C语言或shell脚本，来实现数据的解析交换等功能!，可以通过JSON在线视图查看器来查看JOSN数据格式，如下是一段JOSN数据：
192.168.0.21 - - [24/Nov/2016:00:28:01 +0800] "GET /auth/ping/index.html?gw_id=default&sys_uptime=17886&sys_memfree=257860&sys_load=0.34&wifidog_uptime=557952 HTTP/1.0" 200 4
192.168.0.21 - - [24/Nov/2016:00:28:10 +0800] "GET /auth/auth/index.html?stage=counters&ip=192.168.0.186&mac=44:6d:57:b3:15:72&token=1100169&incoming=39684267&outgoing=7140946&gw_id=default HTTP/1.0" 200 7
192.168.0.21 - - [24/Nov/2016:00:28:10 +0800] "GET /auth/auth/index.html?stage=counters&ip=192.168.0.240&mac=d0:7e:35:d3:32:cc&token=6662206&incoming=168168594&outgoing=3575532&gw_id=default HTTP/1.0" 200 7#include <stdio.h>
#include <stdlib.h>FILE *in, *out;void read_file()
{char ch;char buf[1024]; int i = 0, size = 0;char msg0[] = " {\"deviceGUID\" : \"C48RNGBQ1GKB4A41\",\"timestamp\" : \"2016-12-30 02:00:00\",\"appData\":[{ \"id\": 0 ";fwrite(msg0,strlen(msg0),1,out);//把字符串内容写入到文件while ((ch = fgetc(in)) != EOF){char msg[] = " \",\"type\": \"AD\",\"appKey\": \"portal\",\"data:\"{ ";fwrite(msg,strlen(msg),1,out);//把字符串内容写入到文件fseek(out,0,SEEK_END);//定位文件指针到文件开始位置while ((ch = fgetc(in)) != '\n'){ buf[i++]=ch; fwrite(&ch, 1, 1, out); size++;}char msg1[] = " }\",";fwrite(msg1,strlen(msg1),1,out);//把字符串内容写入到文件fseek(out,0,SEEK_END);//定位文件指针到文件开始位置char msg2[] = " }\]}";fwrite(msg2,strlen(msg2),1,out);//把字符串内容写入到文件}
}int main()
{ if ((in = fopen("access_log","r")) == NULL) //in.txt 和out.txt 都在当前工作目录下存放{printf("canot find the access_log file!\n");exit(0);}if ((out = fopen("out_txt","w+"))==NULL) // 写入数据的文件{printf("canot find the out_txt file!\n");exit(0);}read_file();fclose(in); // 关闭文件fclose(out);puts("");return 0;
}通过Shell脚本实现：
#!/bin/shif [ -n "$1" ]; then file_name=$1
elsefile_name="/data/device.json"
fiif [ -n "$2" ]; then file_path=$2
elsefile_path="/data/type.txt"
fi#echo "" > $file_name
echo "" > $file_name
echo "{" >> $file_name#----------------------------------------------------------------------------#
echo "\"deviceGUID\":\"C48RNGBQ1GKB4A41\"," >> $file_name#----------------------------------------------------------------------------#
timestamp=`date "+%G-%m-%d %H:%M:%S"`
echo "\"timestamp\":\"$timestamp\"," >> $file_name#----------------------------------------------------------------------------#
sysload=`uptime |awk '{print $10}'`
sysload=`echo ${sysload%%,*}`
echo "\"sysload\":\"$sysload\"," >> $file_name#----------------------------------------------------------------------------#
echo "\"mem\":" >> $file_name
echo "[" >> $file_nametotal=`free|grep "Mem" |awk '{print $2}'`
free=`free|grep "Mem" |awk '{print $4}'`
echo " { \"total\": \"$total\", \"free\": \"$free\"}" >> $file_nameecho "]," >> $file_name
#----------------------------------------------------------------------------#
i=0file="/proc/stat"
echo "\"cpu\":" >> $file_name
echo "[" >> $file_nameif [ ! -d "$file" ]; then
user1=`cat $file|sed -n "1p"|awk '{print $2}'`
nice1=`cat $file|sed -n "1p"|awk '{print $3}'`
system1=`cat $file|sed -n "1p"|awk '{print $4}'`
idle1=`cat $file|sed -n "1p"|awk '{print $5}'`
iowait1=`cat $file|sed -n "1p"|awk '{print $6}'`
irq1=`cat $file|sed -n "1p"|awk '{print $7}'`
softirq1=`cat $file|sed -n "1p"|awk '{print $8}'`
stealstolen1=`cat $file|sed -n "1p"|awk '{print $9}'`
guest1=`cat $file|sed -n "1p"|awk '{print $10}'`total1=`expr $user1 + $nice1 + $system1 + $idle1 + $iowait1 + $irq1 + $softirq1 + $stealstolen1 + $guest1`user2=`cat $file|sed -n "1p"|awk '{print $2}'`
nice2=`cat $file|sed -n "1p"|awk '{print $3}'`
system2=`cat $file|sed -n "1p"|awk '{print $4}'`
idle2=`cat $file|sed -n "1p"|awk '{print $5}'`
iowait2=`cat $file|sed -n "1p"|awk '{print $6}'`
irq2=`cat $file|sed -n "1p"|awk '{print $7}'`
softirq2=`cat $file|sed -n "1p"|awk '{print $8}'`
stealstolen2=`cat $file|sed -n "1p"|awk '{print $9}'`
guest2=`cat $file|sed -n "1p"|awk '{print $10}'`total2=`expr $user2 + $nice2 + $system2 + $idle2 + $iowait2 + $irq2 + $softirq2 + $stealstolen2 + $guest2`total=`expr $total2 - $total1`
idle=`expr $idle2 - $idle1`use=`expr $total - $idle`
total=`expr $use \* 100`load=$(echo $use $total | awk '{ printf "%0.1f\n" ,$1/$2}')#load=`top -n 1 |grep Cpu | cut -d "," -f 1 | cut -d ":" -f 2|awk '{print $2}'`
#load=`top -n 1 |grep Cpu | cut -d "," -f 1 | cut -d ":" -f 2 | cut -d "," -f 1| cut -d " " -f 3`
#load=`top -n 1 |grep CPU |awk '{print $2}'|sed -n "1p"`
#load=`top -n 1 | awk '/CPU/{print $2}'|sed -n "1p"`
#load=`echo ${load%\,*}`echo " { \"id\": \"$i\", \"load\":\"$load%\"}" >> $file_name
fi
echo "]," >> $file_name
#----------------------------------------------------------------------------#
file="/data/type.txt"if [ ! -d "$file" ]; then
type=`cat /data/type.txt|sed -n "1p"`total_M=`df -m| grep mntWRT|awk '{print $1}'`
used_M=`df -m| grep mntWRT|awk '{print $2}'`
free_M=`df -m| grep mntWRT|awk '{print $3}'`a=1024
total=$(echo $total_M $a | awk '{ printf "%0.1f\n" ,$1/$2}')
used=$(echo $used_M $a | awk '{ printf "%0.1f\n" ,$1/$2}')
free=$(echo $free_M $a | awk '{ printf "%0.1f\n" ,$1/$2}')echo "\"storage\":" >> $file_name
echo "[" >> $file_name
echo " { \"id\": \"$type\", \"total\":\"$total G\", \"used\":\"$used G\", \"free\":\"$free G\"}" >> $file_name
echo "]," >> $file_name
fi
echo "" >> $file_name
#----------------------------------------------------------------------------#
i=`cat /proc/net/dev | grep ":" | awk '{print $1}'|wc -l`
j=2
echo "\"nic\":" >> $file_name
echo "[" >> $file_name
#while [[ $j -ge $i ]];do
#for((j=1;j<=$i;j++));do
while [[ $j -le $i ]];doecho $j;
eth_name=`cat /proc/net/dev | grep ":" | awk '{print $1}'|cut -d ":" -f 1|sed -n ""$j"p"`if [ $eth_name != "lo" ];then
ip=`ifconfig $eth_name| grep 'inet addr:'|sed 's/.*inet addr://g'| cut -d " " -f 1`
#echo "ip:$ip" >> $file_name
#echo "ip:$ip"band=`ethtool $eth_name| grep Speed | awk '{print $2}'|cut -d "b" -f 1`
#echo "band: $band" >> $file_namesend_o=`ifconfig $eth_name | grep bytes | awk '{print $6}' | awk -F : '{print $2}'`
recv_o=`ifconfig $eth_name | grep bytes | awk '{print $2}' | awk -F : '{print $2}'`
sleep 1
send_n=`ifconfig $eth_name | grep bytes | awk '{print $6}' | awk -F : '{print $2}'`
recv_n=`ifconfig $eth_name | grep bytes | awk '{print $2}' | awk -F : '{print $2}'`send_r=`expr $send_n - $send_o`
recv_r=`expr $recv_n - $recv_o`
total_r=`expr $send_r + $recv_r`echo "Send rate: $send_o Bytes/sec Recv rate: $recv_o Bytes/sec Total rate: $total_r Bytes/sec"a=1024#total=`echo "sclae=2;$total_r/1024" | bc`
total=$(echo $total_r $a | awk '{ printf "%0.1f\n" ,$1/$2}')if [ `expr $i - $j` != 0 ]
thenecho " { \"id\": \"$eth_name\", \"ip\": \"$ip\", \"band\": \"$band\", \"traffic\": \"$total M\"}," >> $file_name
elseecho " { \"id\": \"$eth_name\", \"ip\": \"$ip\", \"band\": \"$band\", \"traffic\": \"$total M\"}" >> $file_name
fi
#j=$(($j+1))
fi
let "j++"
last_eth_name=$eth_name
done
echo "]," >> $file_name
echo "" >> $file_name#----------------------------------------------------------------------------#
#----------------------------------------------------------------------------#
file="/services/data/tunerinfo.txt"if [ ! -d "$file" ]; then
line=`cat $file|grep ","|wc -l`i=0
j=`expr $line - 1` echo "\"tuner\":" >> $file_name
echo "[" >> $file_name
while [[ $i -le $j ]];dok=`expr $i + 1`freq=`cat $file|cut -d "," -f 1|sed -n ""$k"p"`qam=`cat $file|cut -d "," -f 2|sed -n ""$k"p"`stat=`cat $file|cut -d "," -f 3|sed -n ""$k"p"`ser=`cat $file|cut -d "," -f 4|sed -n ""$k"p"`snr=`cat $file|cut -d "," -f 5|sed -n ""$k"p"`sigint=`cat $file|cut -d "," -f 6|sed -n ""$k"p"`if [ `expr $i - $j` != 0 ]thenecho " { \"id\":\"$i\", \"freq\":\"$freq\", \"qam\":\"$qam\", \"stat\":\"$stat\", \"ser\":\"$ser\", \"snr\":\"$snr\", \"sigint\":\"$sigint\"}," >> $file_nameelseecho " { \"id\":\"$i\", \"freq\":\"$freq\", \"qam\":\"$qam\", \"stat\":\"$stat\", \"ser\":\"$ser\", \"snr\":\"$snr\", \"sigint\":\"$sigint\"}" >> $file_namefilet "i++"
doneecho "]," >> $file_name
fi#----------------------------------------------------------------------------#file="/data/userinfo"if [ ! -d "$file" ]; theni=`cat $file | grep ":" | wc -l`
j=1
echo "\"terminal\":" >> $file_name
echo "[" >> $file_name
while [[ $j -le $i ]];doecho $j;id=`expr $j - 1`
macid=`cat $file | grep ":" | cut -d "," -f 1|sed -n ""$j"p"`ip=`cat $file | grep ":" |cut -d "," -f 2|sed -n ""$j"p"`ctime=`cat $file | grep ":" | cut -d "," -f 5|sed -n ""$j"p"`cpnum=19132312345
platform=`cat $file | grep ":" | cut -d "," -f 3|sed -n ""$j"p"`
model=`cat $file | grep ":" | cut -d "," -f 3|sed -n ""$j"p"`
ch="K"
ch1="M"
if [ -d "/data/traffic.txt" ]; thenupt=`cat /data/traffic.txt|grep $ip|cut -d "," -f 2`dnt=`cat /data/traffic.txt|grep $ip|cut -d "," -f 3`echo "$upt" |grep -q "$ch"if [ $? -eq 0 ]thenupt=`echo "$upt" | cut -d "K" -f 1`upt=`expr $upt \* 1024`fiecho "$upt" |grep -q "$ch1"if [ $? -eq 0 ] then upt=`echo "$upt" | cut -d "M" -f 1` upt=`expr $upt \* 1024 \* 1024` fi echo "$dnt" |grep -q "$ch"if [ $? -eq 0 ]thendnt=`echo "$dnt" | cut -d "K" -f 1`dnt=`expr $dnt \* 1024`fiecho "$dnt" |grep -q "$ch1" if [ $? -eq 0 ] then dnt=`echo "$dnt" | cut -d "M" -f 1` dnt=`expr $dnt \* 1024 \* 1024` fi
elseupt="0.3M"dnt="1.2M"
fiecho " {" >> $file_name
echo " \"id\": \"$id\"," >> $file_name
echo " \"ctime\": \"$ctime\"," >> $file_name
echo " \"macid\": \"$macid\"," >> $file_name
echo " \"ip\": \"$ip\"," >> $file_name
echo " \"cpnum\": \"$cpnum\"," >> $file_name
echo " \"platform\": \"$platform\"," >> $file_name
echo " \"model\": \"$model\"," >> $file_name
echo " \"upt\": \"$upt\"," >> $file_name
echo " \"dnt\": \"$dnt\"" >> $file_nameif [ `expr $i - $j` != 0 ]
thenecho " }," >> $file_name
elseecho " }" >> $file_name
fi
let "j++"
done
echo "]" >> $file_name
fi
#----------------------------------------------------------------------------#echo "}" >> $file_name
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