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本文介紹PDF識(shí)別常用語言和常見情況的示例代碼。

說明

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能力介紹

PDF識(shí)別能力介紹及調(diào)用參數(shù)，詳情請(qǐng)參見PDF識(shí)別。

SDK包安裝

常見語言的SDK依賴包信息，詳情請(qǐng)參見SDK總覽。

配置環(huán)境變量

配置環(huán)境變量ALIBABA_CLOUD_ACCESS_KEY_ID和ALIBABA_CLOUD_ACCESS_KEY_SECRET。

重要

阿里云賬號(hào)AccessKey擁有所有API的訪問權(quán)限，建議您使用RAM用戶進(jìn)行API訪問或日常運(yùn)維，具體操作，請(qǐng)參見創(chuàng)建RAM用戶。
請(qǐng)不要將AccessKey ID和AccessKey Secret保存到工程代碼里，否則可能導(dǎo)致AccessKey泄露，威脅您賬號(hào)下所有資源的安全。

Linux和macOS系統(tǒng)配置方法
1. 在IntelliJ IDEA中打開終端Terminal。
2. 執(zhí)行以下命令，配置環(huán)境變量。
  <access_key_id>需替換為您RAM用戶的AccessKey ID，<access_key_secret>替換為您RAM用戶的AccessKey Secret。如果后續(xù)需要進(jìn)行更多權(quán)限相關(guān)的配置，具體操作請(qǐng)參見使用RAM Policy控制訪問權(quán)限。
```
export ALIBABA_CLOUD_ACCESS_KEY_ID=<access_key_id> 
export ALIBABA_CLOUD_ACCESS_KEY_SECRET=<access_key_secret>
```
Windows系統(tǒng)配置方法
新建環(huán)境變量文件，添加環(huán)境變量ALIBABA_CLOUD_ACCESS_KEY_ID和ALIBABA_CLOUD_ACCESS_KEY_SECRET，并寫入已準(zhǔn)備好的AccessKey ID和AccessKey Secret。然后重啟Windows系統(tǒng)。本操作以Windows 10為例進(jìn)行說明。
1. 打開文件資源管理器，在此電腦上右鍵單擊屬性。
2. 在右側(cè)導(dǎo)航欄，單擊高級(jí)系統(tǒng)配置。
3. 在系統(tǒng)屬性對(duì)話框的高級(jí)頁簽下，單擊環(huán)境變量。
4. 在環(huán)境變量對(duì)話框中，單擊新建(W)。
5. 在彈出的新建系統(tǒng)變量對(duì)話框中，添加環(huán)境變量ALIBABA_CLOUD_ACCESS_KEY_ID和ALIBABA_CLOUD_ACCESS_KEY_SECRET，并寫入已準(zhǔn)備好的AccessKey ID和AccessKey Secret。
6. 重啟Windows系統(tǒng)，使配置生效。

示例代碼

文件在上海地域OSS

Java

/*
引入依賴包
<!-- https://mvnrepository.com/artifact/com.aliyun/ocr20191230 -->
<dependency>
  	<groupId>com.aliyun</groupId>
  	<artifactId>ocr20191230</artifactId>
  	<version>${aliyun.ocr.version}</version>
</dependency>
*/

import com.aliyun.ocr20191230.models.RecognizePdfResponse;
import com.aliyun.tea.TeaModel;

public class RecognizePdf {
    public static com.aliyun.ocr20191230.Client createClient(String accessKeyId, String accessKeySecret) throws Exception {
        /*
          初始化配置對(duì)象com.aliyun.teaopenapi.models.Config
          Config對(duì)象存放 AccessKeyId、AccessKeySecret、endpoint等配置
         */
         com.aliyun.teaopenapi.models.Config config = new com.aliyun.teaopenapi.models.Config()
                .setAccessKeyId(accessKeyId)
                .setAccessKeySecret(accessKeySecret);
        // 訪問的域名
        config.endpoint = "ocr.cn-shanghai.aliyuncs.com";
        return new com.aliyun.ocr20191230.Client(config);
    }

    public static void main(String[] args_) throws Exception {
        // 創(chuàng)建AccessKey ID和AccessKey Secret，請(qǐng)參考http://bestwisewords.com/document_detail/175144.html
        // 如果您使用的是RAM用戶的AccessKey，還需要為子賬號(hào)授予權(quán)限AliyunVIAPIFullAccess，請(qǐng)參考http://bestwisewords.com/document_detail/145025.html
        // 從環(huán)境變量讀取配置的AccessKey ID和AccessKey Secret。運(yùn)行代碼示例前必須先配置環(huán)境變量。
        String accessKeyId = System.getenv("ALIBABA_CLOUD_ACCESS_KEY_ID");
        String accessKeySecret = System.getenv("ALIBABA_CLOUD_ACCESS_KEY_SECRET"); 
        com.aliyun.ocr20191230.Client client = RecognizePdf.createClient(accessKeyId, accessKeySecret);
        com.aliyun.ocr20191230.models.RecognizePdfRequest recognizePdfRequest = new com.aliyun.ocr20191230.models.RecognizePdfRequest()
                .setFileURL("https://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/ocr/RecognizePdf/RecognizePdf1.pdf");
        com.aliyun.teautil.models.RuntimeOptions runtime = new com.aliyun.teautil.models.RuntimeOptions();
        try {
            RecognizePdfResponse recognizePdfResponse = client.recognizePdfWithOptions(recognizePdfRequest, runtime);
            // 獲取整體結(jié)果
            System.out.println(com.aliyun.teautil.Common.toJSONString(TeaModel.buildMap(recognizePdfResponse)));
            // 獲取單個(gè)字段
            System.out.println(recognizePdfResponse.getBody());
        } catch (com.aliyun.tea.TeaException teaException) {
            // 獲取整體報(bào)錯(cuò)信息
            System.out.println(com.aliyun.teautil.Common.toJSONString(teaException));
            // 獲取單個(gè)字段
            System.out.println(teaException.getCode());
        }
    }
}

Python

# -*- coding: utf-8 -*-
# 引入依賴包
# pip install alibabacloud_ocr20191230

import os
from alibabacloud_ocr20191230.client import Client
from alibabacloud_ocr20191230.models import RecognizePdfRequest
from alibabacloud_tea_openapi.models import Config
from alibabacloud_tea_util.models import RuntimeOptions

config = Config(
    # 創(chuàng)建AccessKey ID和AccessKey Secret，請(qǐng)參考http://bestwisewords.com/document_detail/175144.html。
    # 如果您用的是RAM用戶的AccessKey，還需要為RAM用戶授予權(quán)限AliyunVIAPIFullAccess，請(qǐng)參考http://bestwisewords.com/document_detail/145025.html。
    # 從環(huán)境變量讀取配置的AccessKey ID和AccessKey Secret。運(yùn)行代碼示例前必須先配置環(huán)境變量。
    access_key_id=os.environ.get('ALIBABA_CLOUD_ACCESS_KEY_ID'),
    access_key_secret=os.environ.get('ALIBABA_CLOUD_ACCESS_KEY_SECRET'),
    # 訪問的域名
    endpoint='ocr.cn-shanghai.aliyuncs.com',
    # 訪問的域名對(duì)應(yīng)的region
    region_id='cn-shanghai'
)
recognize_pdf_request = RecognizePdfRequest(
    file_url='https://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/ocr/RecognizePdf/RecognizePdf1.pdf'
)
runtime = RuntimeOptions()
try:
  # 初始化Client
  client = Client(config)
  response = client.recognize_pdf_with_options(recognize_pdf_request, runtime)
  # 獲取整體結(jié)果
  print(response.body)
except Exception as error:
  # 獲取整體報(bào)錯(cuò)信息
  print(error)
  # 獲取單個(gè)字段
  print(error.code)
  # tips: 可通過error.__dict__查看屬性名稱

PHP

<?php

//安裝依賴包
//composer require alibabacloud/ocr-20191230

use AlibabaCloud\SDK\Ocr\V20191230\Ocr;
use \Exception;
use AlibabaCloud\Tea\Utils\Utils;
use Darabonba\OpenApi\Models\Config;
use AlibabaCloud\SDK\Ocr\V20191230\Models\RecognizePdfRequest;
use AlibabaCloud\Tea\Utils\Utils\RuntimeOptions;

class RecognizePdf {

    /**
     * 使用AK&SK初始化賬號(hào)Client
     * @param string $accessKeyId
     * @param string $accessKeySecret
     * @return Ocr Client
     */
    public static function createClient($accessKeyId, $accessKeySecret){
        //初始化配置對(duì)象Darabonba\OpenApi\Models\Config。
        //Config對(duì)象存放accessKeyId、accessKeySecret、endpoint等配置
        $config = new Config([
            "accessKeyId" => $accessKeyId,
            "accessKeySecret" => $accessKeySecret
        ]);
        // 訪問的域名
        $config->endpoint = "ocr.cn-shanghai.aliyuncs.com";
        return new Ocr($config);
    }

    /**
     * @param string[] $args
     * @return void
     */
    public static function main($args){
        // 創(chuàng)建AccessKey ID和AccessKey Secret，請(qǐng)參考http://bestwisewords.com/document_detail/175144.html。
        // 如果您用的是RAM用戶的AccessKey，還需要為RAM用戶授予權(quán)限AliyunVIAPIFullAccess，請(qǐng)參考http://bestwisewords.com/document_detail/145025.html。
        // 從環(huán)境變量讀取配置的AccessKey ID和AccessKey Secret。運(yùn)行示例前必須先配置環(huán)境變量。    
        $accessKeyId = getenv('ALIBABA_CLOUD_ACCESS_KEY_ID');      
        $accessKeySecret = getenv('ALIBABA_CLOUD_ACCESS_KEY_SECRET');
        $client = self::createClient($accessKeyId, $accessKeySecret);
        $recognizePdfRequest = new RecognizePdfRequest([
            "fileURL" => "https://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/ocr/RecognizePdf/RecognizePdf1.pdf"
        ]);
        $runtime = new RuntimeOptions([]);
        try {
            $resp = $client->recognizePdfWithOptions($recognizePdfRequest, $runtime);
            # 獲取整體結(jié)果
            echo Utils::toJSONString($resp->body);
        } catch (Exception $exception) {
            # 獲取整體報(bào)錯(cuò)信息
            echo Utils::toJSONString($exception);
            # 獲取單個(gè)字段
            echo $exception->getCode();
        }
    }
}
$path = __DIR__ . \DIRECTORY_SEPARATOR . '..' . \DIRECTORY_SEPARATOR . 'vendor' . \DIRECTORY_SEPARATOR . 'autoload.php';
if (file_exists($path)) {
    require_once $path;
}
//$argv是預(yù)留的數(shù)組入?yún)?shù)，無實(shí)際意義，無需進(jìn)行修改
RecognizePdf::main(array_slice($argv, 1));

Node.js

// 安裝依賴包
// npm install @alicloud/ocr20191230
const OcrClient = require('@alicloud/ocr20191230');
const OpenapiClient = require('@alicloud/openapi-client');
const TeaUtil = require('@alicloud/tea-util');

let config = new OpenapiClient.Config({
    // 創(chuàng)建AccessKey ID和AccessKey Secret，請(qǐng)參考http://bestwisewords.com/document_detail/175144.html。
    // 如果您用的是RAM用戶AccessKey，還需要為RAM用戶授予權(quán)限AliyunVIAPIFullAccess，請(qǐng)參考http://bestwisewords.com/document_detail/145025.html。
    // 從環(huán)境變量讀取配置的AccessKey ID和AccessKey Secret。運(yùn)行示例前必須先配置環(huán)境變量。 
    accessKeyId: process.env.ALIBABA_CLOUD_ACCESS_KEY_ID,   
    accessKeySecret: process.env.ALIBABA_CLOUD_ACCESS_KEY_SECRET
});
// 訪問的域名
config.endpoint = `ocr.cn-shanghai.aliyuncs.com`;
const client = new OcrClient.default(config);
let recognizePdfRequest = new OcrClient.RecognizePdfRequest({
  fileURL: "https://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/ocr/RecognizePdf/RecognizePdf1.pdf",
});
let runtime = new TeaUtil.RuntimeOptions({ });
client.recognizePdfWithOptions(recognizePdfRequest, runtime)
  .then(function(recognizePdfResponse) {
    // 獲取整體結(jié)果
    console.log(recognizePdfResponse);
    // 獲取單個(gè)字段
    console.log(recognizePdfResponse.body.data);
  }, function(error) {
    // 獲取整體報(bào)錯(cuò)信息
    console.log(error);
    // 獲取單個(gè)字段
    console.log(error.data.Code);
  })

/**
依賴github.com/alibabacloud-go/ocr-20191230/v3
建議使用go mod tidy安裝依賴
 */

import (
	"fmt"
	openapi "github.com/alibabacloud-go/darabonba-openapi/v2/client"
	ocr20191230 "github.com/alibabacloud-go/ocr-20191230/v3/client"
	util "github.com/alibabacloud-go/tea-utils/v2/service"
	"github.com/alibabacloud-go/tea/tea"
)

func main() {
     // 創(chuàng)建AccessKey ID和AccessKey Secret，請(qǐng)參考http://bestwisewords.com/document_detail/175144.html。
     // 如果您用的是RAM用戶的AccessKey，還需要為RAM用戶授予權(quán)限AliyunVIAPIFullAccess，請(qǐng)參考http://bestwisewords.com/document_detail/145025.html。
     // 從環(huán)境變量讀取配置的AccessKey ID和AccessKey Secret。運(yùn)行示例前必須先配置環(huán)境變量。  
     accessKeyId := os.Getenv("ALIBABA_CLOUD_ACCESS_KEY_ID")  
     accessKeySecret := os.Getenv("ALIBABA_CLOUD_ACCESS_KEY_SECRET")
     // 初始化配置對(duì)象 &openapi.Config。Config對(duì)象存放AccessKeyId、AccessKeySecret、Endpoint等配置。
	   config := &openapi.Config{
		      AccessKeyId: tea.String(accessKeyId),
		      AccessKeySecret: tea.String(accessKeySecret)
	   }
	// 訪問的域名
	config.Endpoint = tea.String("ocr.cn-shanghai.aliyuncs.com")
	client, err := ocr20191230.NewClient(config)
	if err != nil {
		panic(err)
	}
	recognizePdfRequest := &ocr20191230.RecognizePdfRequest{
		FileURL: tea.String("https://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/ocr/RecognizePdf/RecognizePdf1.pdf"),
	}
	runtime := &util.RuntimeOptions{}
	recognizePdfResponse, err := client.RecognizePdfWithOptions(recognizePdfRequest, runtime)
	if err != nil {
		// 獲取整體報(bào)錯(cuò)信息
		fmt.Println(err.Error())
	} else {
		// 獲取整體結(jié)果
		fmt.Println(recognizePdfResponse)
	}
}

// 安裝依賴包
// dotnet add package AlibabaCloud.SDK.Ocr20191230
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Threading.Tasks;
using AlibabaCloud.SDK.Ocr20191230.Models;
using Tea;
using Tea.Utils;

namespace AlibabaCloud.SDK.Sample
{
    public class Sample
    {
        /**
            * 使用AK&SK初始化賬號(hào)Client
            * @param accessKeyId
            * @param accessKeySecret
            * @return Client
            * @throws Exception
        */
        public static AlibabaCloud.SDK.Ocr20191230.Client CreateClient(string accessKeyId, string accessKeySecret)
        {
            AlibabaCloud.OpenApiClient.Models.Config config = new AlibabaCloud.OpenApiClient.Models.Config
            {
                AccessKeyId = accessKeyId,
                AccessKeySecret = accessKeySecret,
            };
            // 訪問的域名
            config.Endpoint = "ocr.cn-shanghai.aliyuncs.com";
            return new AlibabaCloud.SDK.Ocr20191230.Client(config);
        }
        public static void Main(string[] args)
        {
            // 創(chuàng)建AccessKey ID和AccessKey Secret，請(qǐng)參考http://bestwisewords.com/document_detail/175144.html
            // 如果您使用的是RAM用戶的AccessKey，還需要為子賬號(hào)授予權(quán)限AliyunVIAPIFullAccess，請(qǐng)參考http://bestwisewords.com/document_detail/145025.html
            // 從環(huán)境變量讀取配置的AccessKey ID和AccessKey Secret。運(yùn)行代碼示例前必須先配置環(huán)境變量。
            AlibabaCloud.SDK.Ocr20191230.Client client = CreateClient(System.Environment.GetEnvironmentVariable("ALIBABA_CLOUD_ACCESS_KEY_ID"), System.Environment.GetEnvironmentVariable("ALIBABA_CLOUD_ACCESS_KEY_SECRET"));
            AlibabaCloud.SDK.Ocr20191230.Models.RecognizePdfRequest recognizePdfRequest = new AlibabaCloud.SDK.Ocr20191230.Models.RecognizePdfRequest
            {
                FileURL = "https://viapi-test.oss-cn-shanghai.aliyuncs.com/viapi-3.0domepic/ocr/RecognizePdf/RecognizePdf1.pdf",
            };
            AlibabaCloud.TeaUtil.Models.RuntimeOptions runtime = new AlibabaCloud.TeaUtil.Models.RuntimeOptions();
            try
            {
                AlibabaCloud.SDK.Ocr20191230.Models.RecognizePdfResponse recognizePdfResponse = client.RecognizePdfWithOptions(recognizePdfRequest, runtime);
                // 獲取整體結(jié)果
                Console.WriteLine(AlibabaCloud.TeaUtil.Common.ToJSONString(recognizePdfResponse.Body));
                // 獲取單個(gè)字段
                Console.WriteLine(AlibabaCloud.TeaUtil.Common.ToJSONString(recognizePdfResponse.Body.Data));
            }
            catch (TeaException error)
            {
                // 如有需要，請(qǐng)打印 error
                Console.WriteLine(AlibabaCloud.TeaUtil.Common.AssertAsString(error.Message));
            }
            catch (Exception _error)
            {
                TeaException error = new TeaException(new Dictionary<string, object>
              {
                { "message", _error.Message }
              });
                // 如有需要，請(qǐng)打印 error
                Console.WriteLine(AlibabaCloud.TeaUtil.Common.AssertAsString(error.Message));
            }
        }
    }
}

文件在本地或可訪問的URL