Java 添加、下载、读取PDF附件信息（基于Spire.Cloud.SDK for Java）

Spire.Cloud.SDK for Java提供了PdfAttachmentsApi接口添加附件addAttachment()、下载附件downloadAttachment()、获取附件信息getAttachmentsInfo()，本文将通过Java代码示例介绍具体实现方法。详细内容参考以下步骤：

一、导入jar文件。（有2种方式）

（推荐）方式1. 创建Maven项目程序，通过maven仓库下载导入。以IDEA为例，新建Maven项目，在pom.xml文件中配置maven仓库路径，并指定spire.cloud.sdk的依赖，如下：

<repositories>
    <repository>
        <id>com.e-iceblue</id>
        <name>cloud</name>
        <url>http://repo.e-iceblue.cn/repository/maven-public/</url>
    </repository>
</repositories>

<dependencies>
        <dependency>
            <groupId> cloud </groupId>
            <artifactId>spire.cloud.sdk</artifactId>
            <version>3.5.0</version>
        </dependency>

        <dependency>
        <groupId> com.google.code.gson</groupId>
        <artifactId>gson</artifactId>
        <version>2.8.1</version>
        </dependency>

        <dependency>
            <groupId> com.squareup.okhttp</groupId>
            <artifactId>logging-interceptor</artifactId>
            <version>2.7.5</version>
        </dependency>

        <dependency>
            <groupId> com.squareup.okhttp </groupId>
            <artifactId>okhttp</artifactId>
            <version>2.7.5</version>
        </dependency>

        <dependency>
            <groupId> com.squareup.okio </groupId>
            <artifactId>okio</artifactId>
            <version>1.6.0</version>
        </dependency>

        <dependency>
            <groupId> io.gsonfire</groupId>
            <artifactId>gson-fire</artifactId>
            <version>1.8.0</version>
        </dependency>

        <dependency>
            <groupId>io.swagger</groupId>
            <artifactId>swagger-annotations</artifactId>
            <version>1.5.18</version>
        </dependency>

        <dependency>
            <groupId> org.threeten </groupId>
            <artifactId>threetenbp</artifactId>
            <version>1.3.5</version>
        </dependency>
</dependencies>

完成配置后，点击“Import Changes” 即可导入所有需要的jar文件。如果使用的是Eclipse，可参考这里的导入方法。

导入结果：

方式2：手动下载jar包，然后解压文件，手动导入jar，同时还需另行手动导入其他几个jar文件。

二、登录冰蓝云账号，创建文件夹，上传文档。

三、创建应用程序，获取App ID及App Key。

四、Java代码示例

【示例1】添加附件

import spire.cloud.pdf.sdk.ApiException;
import spire.cloud.pdf.sdk.Configuration;
import spire.cloud.pdf.sdk.api.PdfAttachmentsApi;

import java.io.File;

public class AddAttachment {
    static String appId = "App ID";
    static String appKey = "App Key";
    static String baseUrl= "https://api.e-iceblue.cn";
    static Configuration configuration = new Configuration(appId, appKey, baseUrl);
    static PdfAttachmentsApi pdfAttachmentsApi = new PdfAttachmentsApi(configuration);

    public static void main(String[] args) throws ApiException {
        String name = "sample.pdf";//用于测试的PDF源文档
        String outPath = "output/AddAttachment.pdf";//结果文档路径（结果文档保存在云端output文件夹下）
        File file = new File("test.docx");//加载附件文档
        String attachmentFileName = "AddAttachment.docx";//设置附件文档名称
        String attachmentDescription = "A Nice File";//附件描述
        String folder = "input";//源文档所在文件夹
        String storage = null;//冰蓝云提供的2G免费云存储空间
        String password = null;//源文档密码

        //调用方法添加附件
        pdfAttachmentsApi.addAttachment(name, outPath, file, attachmentFileName, attachmentDescription, folder, storage, password);
    }
}

附件添加结果：

【示例2】下载附件文档（以上文中生成的PDF文档为例，读取添加的Word附件）

import spire.cloud.pdf.sdk.ApiException;
import spire.cloud.pdf.sdk.Configuration;
import spire.cloud.pdf.sdk.api.PdfAttachmentsApi;

import java.io.File;

public class DownloadAttachment {
    //配置账号信息
    static String appId = "App ID";
    static String appKey = "App Key";
    static String baseUrl= "https://api.e-iceblue.cn";
    static Configuration configuration = new Configuration(appId, appKey, baseUrl);
    static PdfAttachmentsApi pdfAttachmentsApi = new PdfAttachmentsApi(configuration);

    public static void main(String[] args) throws ApiException {
        String name = "AddAttachment.pdf";//包含附件的PDF源文档
        Integer orderNumber = 1;
        String folder = "output";//源文档所在云端文件夹
        String storage = null;//冰蓝云提供的2G免费云存储空间
        String password = null;//源文档密码

        //调用方法下载PDF文档中的附件文档
        File response = pdfAttachmentsApi.downloadAttachment(name, orderNumber, folder, storage, password);
        System.out.println(response);
    }
}

读取结果如下，可在路径中查看下载的附件文档：

【示例3】获取附件信息

import spire.cloud.pdf.sdk.ApiException;
import spire.cloud.pdf.sdk.Configuration;
import spire.cloud.pdf.sdk.api.PdfAttachmentsApi;
import spire.cloud.pdf.sdk.model.Attachments;

public class GetAttachmentInfo {
    //配置账号信息
    static String appId = "App ID";
    static String appKey = "App Key";
    static String baseUrl= "https://api.e-iceblue.cn";
    static Configuration configuration = new Configuration(appId, appKey, baseUrl);
    static PdfAttachmentsApi pdfAttachmentsApi = new PdfAttachmentsApi(configuration);

    public static void main(String[] args) throws ApiException {
        String name = "AddAttachment.pdf";//包含附件的PDF源文档
        String folder = "output";//源文档所在文件夹
        String storage = null;//冰蓝云提供的2G云存储空间
        String password = null;//源文档密码

        //调用方法获取附件信息
        Attachments response = pdfAttachmentsApi.getAttachmentsInfo(name, folder, storage, password);
        System.out.println(response);
    }
}

附件信息读取结果：

（完）