# 获取json字符串的值
# $1 json字符串
# $2 key
function get_json_value()
{
    local json=$1
    local key=$2
    
    local value=$(echo "${json}" | awk -F "[{,:}]" ‘{for(i=1;i<=NF;i++){if($i~"‘${key}‘"){print $(i+1)}}}‘ | sed ‘s/\"//g‘)
    
    echo ${value}
}

accessToken=`get_json_value "${body}" "accessToken"`

echo $accessToken