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PDF Oxide

Python / Rust / Node.js / Go / C# 填写 PDF 表单

在每个受支持的绑定中，读取并以代码填写表单字段：

Python

from pdf_oxide import PdfDocument

doc = PdfDocument("application.pdf")

# 读取现有字段
for field in doc.page(0).form_fields():
    print(f"{field.name}: {field.value}")

# 填写字段并保存
doc.set_form_field("full_name", "Jane Doe")
doc.set_form_field("email", "jane@example.com")
doc.set_form_field("agree_terms", True)
doc.save("filled-application.pdf")

WASM

import { WasmPdfDocument } from "pdf-oxide-wasm";

const doc = new WasmPdfDocument(bytes);

// 读取现有字段
const fields = doc.getFormFields();
for (const field of fields) {
    console.log(`${field.name}: ${field.value}`);
}

// 以 XFDF 导出表单数据
const xfdf = doc.exportFormData("xfdf");
console.log(xfdf);
doc.free();

Rust

use pdf_oxide::editor::{DocumentEditor, EditableDocument, FormFieldValue};

let mut editor = DocumentEditor::open("application.pdf")?;

// 读取现有字段
let fields = editor.get_form_fields()?;
for field in &fields {
    println!("{}: {:?}", field.name(), field.value());
}

// 填写字段并保存
editor.set_form_field_value("full_name", FormFieldValue::Text("Jane Doe".into()))?;
editor.set_form_field_value("email", FormFieldValue::Text("jane@example.com".into()))?;
editor.set_form_field_value("agree_terms", FormFieldValue::Boolean(true))?;
editor.save("filled-application.pdf")?;

Go

package main

import (
    "fmt"
    "log"
    pdfoxide "github.com/yfedoseev/pdf_oxide/go"
)

func main() {
    doc, err := pdfoxide.Open("application.pdf")
    if err != nil { log.Fatal(err) }
    defer doc.Close()

    // 读取现有字段
    fields, _ := doc.FormFields()
    for _, f := range fields {
        fmt.Printf("%s: %s\n", f.Name, f.Value)
    }

    // 通过编辑器填写字段并保存
    editor, err := pdfoxide.OpenEditor("application.pdf")
    if err != nil { log.Fatal(err) }
    defer editor.Close()

    _ = editor.SetFormFieldValue("full_name", "Jane Doe")
    _ = editor.SetFormFieldValue("email", "jane@example.com")
    _ = editor.SetFormFieldValue("agree_terms", "Yes")
    _ = editor.Save("filled-application.pdf")
}

C#

using PdfOxide;

using (var doc = PdfDocument.Open("application.pdf"))
{
    foreach (var f in doc.GetFormFields())
        Console.WriteLine($"{f.Name}: {f.Value}");
}

using var editor = DocumentEditor.Open("application.pdf");
editor.SetFormFieldValue("full_name", "Jane Doe");
editor.SetFormFieldValue("email", "jane@example.com");
editor.SetFormFieldValue("agree_terms", "Yes");
editor.Save("filled-application.pdf");

PDF Oxide 支持 AcroForm 字段（文本、复选框、单选按钮、下拉列表）以及 XFA 表单分析。采用 MIT 许可证，不受 AGPL 限制。

安装

pip install pdf_oxide

读取表单字段

列出全部字段

Python

from pdf_oxide import PdfDocument

doc = PdfDocument("form.pdf")
for field in doc.page(0).form_fields():
    print(f"名称: {field.name}")
    print(f"  类型: {field.field_type}")
    print(f"  值: {field.value}")
    print(f"  区域: {field.bounds}")
    print()

WASM

const doc = new WasmPdfDocument(bytes);
const fields = doc.getFormFields();
for (const field of fields) {
    console.log(`名称: ${field.name}`);
    console.log(`  类型: ${field.fieldType}`);
    console.log(`  值: ${field.value}`);
}
doc.free();

Rust

let mut editor = DocumentEditor::open("form.pdf")?;
let fields = editor.get_form_fields()?;
for field in &fields {
    println!("名称: {}", field.name());
    println!("  类型: {:?}", field.field_type());
    println!("  值: {:?}", field.value());
}

Go

doc, _ := pdfoxide.Open("form.pdf")
defer doc.Close()

fields, _ := doc.FormFields()
for _, f := range fields {
    fmt.Printf("名称: %s\n  类型: %s\n  值: %s\n", f.Name, f.Type, f.Value)
}

C#

using var doc = PdfDocument.Open("form.pdf");
foreach (var f in doc.GetFormFields())
{
    Console.WriteLine($"名称: {f.Name}");
    Console.WriteLine($"  类型: {f.Type}");
    Console.WriteLine($"  值: {f.Value}");
}

字段类型

类型 描述 示例值
Text 单行或多行文本 "Jane Doe"
Button 复选框或单选按钮 True / False
Choice 下拉列表或列表框 "Option A"
Signature 数字签名 （签名数据）

填写表单字段

文本字段

doc = PdfDocument("form.pdf")
doc.set_form_field("first_name", "Jane")
doc.set_form_field("last_name", "Doe")
doc.set_form_field("address", "123 Main St\nApt 4B\nNew York, NY 10001")
doc.save("filled.pdf")

复选框

doc = PdfDocument("form.pdf")
doc.set_form_field("agree_terms", True)
doc.set_form_field("opt_in_newsletter", False)
doc.save("filled.pdf")

下拉 / 选择字段

doc = PdfDocument("form.pdf")
doc.set_form_field("country", "United States")
doc.set_form_field("department", "Engineering")
doc.save("filled.pdf")

批量填写

来自 CSV 文件

为 CSV 的每一行填写同一份模板：

import csv
from pdf_oxide import PdfDocument

with open("applicants.csv") as f:
    reader = csv.DictReader(f)
    for i, row in enumerate(reader):
        doc = PdfDocument("template.pdf")
        for field_name, value in row.items():
            doc.set_form_field(field_name, value)
        doc.save(f"filled_{i + 1}.pdf")

来自字典

from pdf_oxide import PdfDocument

data = {
    "full_name": "Jane Doe",
    "email": "jane@example.com",
    "phone": "555-0123",
    "department": "Engineering",
    "start_date": "2025-03-01",
}

doc = PdfDocument("onboarding.pdf")
for name, value in data.items():
    doc.set_form_field(name, value)
doc.save("onboarding-filled.pdf")

导出表单数据

导出为 FDF

Python

from pdf_oxide import PdfDocument

doc = PdfDocument("filled-form.pdf")
fdf_data = doc.export_fdf()
with open("form-data.fdf", "wb") as f:
    f.write(fdf_data)

WASM

const doc = new WasmPdfDocument(bytes);
const fdfData = doc.exportFormData("fdf");
// fdfData 按格式返回字符串或字节
doc.free();

Rust

use pdf_oxide::extractors::FormExtractor;

let mut doc = PdfDocument::open("filled-form.pdf")?;
let fields = FormExtractor::extract_fields(&mut doc)?;
let fdf_bytes = FormExtractor::export_fdf(&mut doc, fields)?;
std::fs::write("form-data.fdf", &fdf_bytes)?;

导出为 XFDF（XML）

Python

from pdf_oxide import PdfDocument

doc = PdfDocument("filled-form.pdf")
xfdf_data = doc.export_xfdf()
with open("form-data.xfdf", "w") as f:
    f.write(xfdf_data)

WASM

const doc = new WasmPdfDocument(bytes);
const xfdfData = doc.exportFormData("xfdf");
console.log(xfdfData);
doc.free();

Rust

let mut doc = PdfDocument::open("filled-form.pdf")?;
let fields = FormExtractor::extract_fields(&mut doc)?;
let xfdf = FormExtractor::export_xfdf(&mut doc, fields)?;
std::fs::write("form-data.xfdf", &xfdf)?;

XFA 表单

部分政府和企业表单使用 XFA（XML Forms Architecture），而不是标准的 AcroForm。PDF Oxide 能检测并分析 XFA 表单：

from pdf_oxide import PdfDocument

doc = PdfDocument("government-form.pdf")
xfa = doc.has_xfa()
if xfa:
    print(f"检测到 XFA 表单：{len(xfa.fields)} 个字段")
    for field in xfa.fields:
        print(f"  {field.name} ({field.field_type})")

关于 XFA 的完整处理方式，请参见 XFA 表单指南。

加密表单

为密码保护的 PDF 填写表单：

Python

from pdf_oxide import PdfDocument

doc = PdfDocument("protected-form.pdf", password="secret")
doc.set_form_field("signature_date", "2025-01-15")
doc.save("signed.pdf")

WASM

const doc = new WasmPdfDocument(bytes);
doc.authenticate("secret");
const fields = doc.getFormFields();
console.log(fields);
doc.free();

Rust

let mut editor = DocumentEditor::open_with_password("protected-form.pdf", "secret")?;
editor.set_form_field_value("signature_date", FormFieldValue::Text("2025-01-15".into()))?;
editor.save("signed.pdf")?;

密码保护 PDF 的编辑。 Go 与 C# 的 DocumentEditor 目前尚未提供在编辑器上直接认证的入口。若要在 Go 或 C# 中填写加密 PDF 的字段，请先通过只读路径 PdfDocument.OpenWithPassword 解密，另存一份未加密副本，再用编辑器打开该副本处理。

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