file content as post parameter value example (split by backslash for getting multiple request)

post.sh

#!/bin/bash

function post() {
    mkdir -p "$HOME/tmp/"
    local a="$HOME/tmp/Q_$(openssl rand -hex 16).req"
    echo > "$a"
    vi "$a"
    local b=""
    local c=""
    local t=""
    local n=$(printf '\n')
    local e=$(printf '\\')
    local x="\\\\+"
    while read -r r; do
        t=$(echo "$r" | sed 's/^[[:space:]]*//;s/[[:space:]]*$//')
        [ -z "$t" ] && continue
        if [[ "$t" =~ $x && ! -z "$c" ]]; then
            b=$(echo "$c" | perl -MURI::Escape -ne 'chomp;print uri_escape($_),"+"')
            c=""
            wget -q -O- --post-data="data=$b" "http://localhost:8080/post/data"
        elif [ ! -z "$t" ]; then
            c="$c $t$n"
        fi
    done < "$a"
    if [ ! -z "$c" ]; then
        b=$(echo "$c" | perl -MURI::Escape -ne 'chomp;print uri_escape($_),"+"')
        wget -q -O- --post-data="data=$b" "http://localhost:8080/post/data"
    fi
    rm -f "$a"
    return 0
}