安装

go get -u github.com/SebastiaanKlippert/go-wkhtmltopdf

go version go1.9.2 linux/amd64

代码

import (

"fmt"

"strings"

wkhtml "github.com/SebastiaanKlippert/go-wkhtmltopdf"

)

func main(){

pdfg, err :=  wkhtml.NewPDFGenerator()

if err != nil{

return

}

htmlStr := `

This is an html

from pdf to test color

`

pdfg.AddPage(wkhtml.NewPageReader(strings.NewReader(htmlStr)))

// Create PDF document in internal buffer

err = pdfg.Create()

if err != nil {

log.Fatal(err)

}

//Your Pdf Name

err = pdfg.WriteFile("./Your_pdfname.pdf")

if err != nil {

log.Fatal(err)

}

fmt.Println("Done")

}

上面的代码适用于使用适当的背景图片和嵌入式CSS样式标签在golang中将html转换为pdf

最近收到网友的提问后端怎么把html转成pdf文件，于是我就把我以前做的例子发出来给大家参考一下，如果对你有帮助的话请点个赞

1.首先选择适合自己的系统下载wkhtmltopdf工具

mac下载后安装成功会自动添加到环境变量 直接执行 wkhtmltopdf -V 测试是否安装成功

hfy@566-Mac-mini ~ % wkhtmltopdf -V

wkhtmltopdf 0.12.5 (with patched qt)

linux环境安装需要下载好，添加执行权限并手动加到环境变量下面,如果不想加入到环境变量在代码里写死路径也行

2.直接使用下面demo修改下就可以使用了

package main

import (

"context"

"errors"

"fmt"

"io/ioutil"

"os/exec"

"path/filepath"

)

var (

argsError = errors.New("no input file or out path")

fileTypeError = errors.New("the file must be in pdf format")

)

type HtmlToPdf struct {

Commond string

in string

out string

argsMap map[string]string

prams []string

}

func NewPdf() *HtmlToPdf {

args := map[string]string{

"--load-error-handling": "ignore",

"--footer-center": "第[page]页/共[topage]页",

"--footer-font-size": "8",

"-B": "31",

"-T": "32",

}

return &HtmlToPdf{

Commond: "wkhtmltopdf",

argsMap: args,

}

}

func (this *HtmlToPdf) OutFile(input string, outPath string) (string, error) {

var pdfPath string

// 输入 输出 参数不能为空

if input == "" || outPath == "" {

return pdfPath, argsError

}

//判断是否是生成pdf 文件

ext := filepath.Ext(outPath)

if ext != ".pdf" {

return pdfPath, fileTypeError

}

this.in = input

this.out = outPath

//构建参数

this.buildPrams()

//执行命令

if _, err := this.doExce();err != nil {

return pdfPath, err

}

return pdfPath, nil

}

func (this *HtmlToPdf) doExce() ([]byte, error) {

ctx, cancel := context.WithCancel(context.Background())

defer cancel()

cmd := exec.CommandContext(ctx, this.Commond, this.prams...)

stdout, err := cmd.StderrPipe()

if err != nil {

return nil, err

}

defer stdout.Close()

//运行命令

err = cmd.Start()

if err != nil {

return nil, err

}

bytes, err := ioutil.ReadAll(stdout)

if err != nil {

return nil, err

}

cmd.Wait()

return bytes, err

}

func (this *HtmlToPdf) buildPrams() {

for key, val := range this.argsMap {

this.prams = append(this.prams, key, val)

}

//添加 输入 输出 参数

this.prams = append(this.prams, this.in, this.out)

}

func main() {

pdfOpt:= NewPdf()

htmlDemoPath := "xxxxx/src/demo/test.html"

PdfDemoPath := "xxxxx/src/demo/test.pdf"

str,err := pdfOpt.OutFile(htmlDemoPath,PdfDemoPath)

if err != nil {

fmt.Println("Error ",err)

return

}

fmt.Println(str)

}

效果:

image.png

Golang HTML to PDF Converter

For reading any document, one prefers PDF format over any other formats as it is considered as a standard format for any document in our day to day life. We often come across converting any form details or previews on the website in the form of HTML to PDF. For GoLang, understanding such usability, Developers at Mindinventory made an effort for making one HTML to PDF Converter which can be used for converting HTML content to PDF.

What it is?

It is a repository, integrating which one can offer HTML to PDF Conversion to their customers.

Prerequisite

Install wkhtmltopdf using below command

sudo apt install wkhtmltopdf - for Ubuntu

brew install Caskroom/cask/wkhtmltopdf - For Mac

Steps to Follow

Create a sample HTML file inside of your project.

Get go package using the below command for parsing the HTMl template.

go get github.com/SebastiaanKlippert/go-wkhtmltopdf

Get another go package for converting this html parse data to pdf using the below command.

go get html/template

Run below command

go run main.go

After finish above steps, You can generate pdf file from html.

NOTES: Don't forget to mention your html and pdf path details inside your code. If you want to generate pdf for static data then it is not mandatory to generate another html for clone data. Use that same sample html inside the code.

LICENSE!

Golang HTML to PDF Converter is MIT-licensed

Let us know!

We’d be really happy if you sent us links to your projects where you use our component. Just send an email to sales@mindinventory.com And do let us know if you have any questions or suggestion regarding our work.