前言:如果使用chrome浏览器的话,可以安装一个插件 PDF Viewer 也是一样的效果

服务端输出PDF

这里用Spring-Boot项目来示范

@SpringBootApplication
@Controller
public class PdfjsDemoApplication {

  @GetMapping(value = "/viewPdf", produces = "application/pdf")
  @ResponseBody
  public FileSystemResource viewPdf() {
    return new FileSystemResource("/Users/h/Desktop/pdfjs-demo/ThreeBody.pdf");
  }

  public static void main(String[] args) {
    SpringApplication.run(PdfjsDemoApplication.class, args);
  }
}

请自行将程序里的pdf地址换成你自己的pdf,最好带目录的pdf,后台好测试

浏览器访问 http://localhost:8080/viewPdf 就可以看到ThreeBody.pdf的内容了

大致长这样

编译pdf.js

下载地址:https://github.com/mozilla/pdf.js

下载下来后,进入到pad.js目录里运行

# 安装编译工具
npm install -g gulp-cli
# 安装依赖
npm install # 如果这一步比较慢,可以换成 yarn install
# 编译
gulp generic

编译好了之后,将目录下的 build/generic 文件夹拷贝到项目的 static 目录下,其实就是把这个文件夹通过web程序映射成静态资源文件

配置Spring-Boot

spring-boot2.0以后,放在 resources/static 下的文件还要在程序里配置一下,否则运行会报404

@SpringBootApplication
@Controller
public class PdfjsDemoApplication extends WebMvcConfigurationSupport {

  @GetMapping(value = "/viewPdf", produces = "application/pdf")
  @ResponseBody
  public FileSystemResource viewPdf() {
    return new FileSystemResource("/Users/h/Desktop/pdfjs-demo/ThreeBody.pdf");
  }

  @Override
  protected void addResourceHandlers(ResourceHandlerRegistry registry) {
    super.addResourceHandlers(registry);
    registry.addResourceHandler("/static/**").addResourceLocations("classpath:/static/");
  }

  public static void main(String[] args) {
    SpringApplication.run(PdfjsDemoApplication.class, args);
  }
}

现在可以访问一下 http://localhost:8080/static/generic/pdf.js/viewer.html 可以打开页面说明配置没问题了

然后添加上一个首页,给两个链接一个是普通打开pdf,一个是通过pdf.js打开

@GetMapping("/")
public String index() {
  return "index";
}

java类完整代码

@SpringBootApplication
@Controller
public class PdfjsDemoApplication extends WebMvcConfigurationSupport {

  @GetMapping("/")
  public String index() {
    return "index";
  }

  @GetMapping(value = "/viewPdf", produces = "application/pdf")
  @ResponseBody
  public FileSystemResource viewPdf() {
    return new FileSystemResource("/Users/h/Desktop/pdfjs-demo/ThreeBody.pdf");
  }

  @Override
  protected void addResourceHandlers(ResourceHandlerRegistry registry) {
    super.addResourceHandlers(registry);
    registry.addResourceHandler("/static/**").addResourceLocations("classpath:/static/");
  }

  public static void main(String[] args) {
    SpringApplication.run(PdfjsDemoApplication.class, args);
  }
}

index.html

<!doctype html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport"
        content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
</head>
<body>
<ul>
  <li><a href="/viewPdf" target="_blank">查看pdf</a></li>
  <li>
    <a href="javascript:window.open('/static/generic/pdf.js/viewer.html?file=' + encodeURIComponent('/viewPdf'), '_blank')">使用pdf.js查看pdf</a>
  </li>
</ul>
</body>
</html>

访问 http://localhost:8080/

点点链接试试看有什么区别吧,具体效果图如下

原文链接: https://tomoya92.github.io/2018/08/30/pdf.js/