SpringBoot在线预览PDF文件

本项目Demo使用了PDF.js插件实现PDF在线阅读功能PDF.js插件下载地址

1、创建SpringBoot项目,目录结构如下：

2、进行项目配置：

pom.xml：

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>com.han</groupId>
	<artifactId>online-read-pdf</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>1.5.10.RELEASE</version>
		<relativePath />
	</parent>
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-thymeleaf</artifactId>
		</dependency>
	</dependencies>

</project>

application.yml

spring.thymeleaf.cache = false
spring.thymeleaf.content-type = text/html
spring.thymeleaf.encoding = UTF-8
spring.thymeleaf.mode = HTML5
spring.thymeleaf.prefix = classpath:/templates/
spring.thymeleaf.suffix = .html	

PDFApplication.java

package com.han;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

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

IndexController.java

package com.han.controller;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

@Controller
public class IndexController {
	@RequestMapping("/index")
	public String index() {
		return "index";
	}
	@RequestMapping(value = "/preview", method = RequestMethod.GET)
	public void pdfStreamHandler(HttpServletRequest request, HttpServletResponse response) {
        //PDF文件地址
		File file = new File("E:\\pdf\\pdf\\GJB 8748-2015(GJB 6482-2008k).pdf");
		if (file.exists()) {
			byte[] data = null;
			FileInputStream input=null;
			try {
				input= new FileInputStream(file);
				data = new byte[input.available()];
				input.read(data);
				response.getOutputStream().write(data);
			} catch (Exception e) {
				System.out.println("pdf文件处理异常：" + e);
			}finally{
				try {
					if(input!=null){
						input.close();
					}
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		}
	}
}

index.html

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>在线阅读PDF文件</title>
</head>
<script>
	function onLineReadPDF() {
		window.open("/js/web/viewer.html?file=/preview");
	}
</script>
<body>
	<h1 onclick="onLineReadPDF()">在线阅读PDF文件</h1>
</body>
</html>

运行结果效果图：

项目源码下载地址：https://download.youkuaiyun.com/download/semial/11142874