springboot-openoffice(文件在线预览,超简单)

关于:

文件在线预览,在网上找了不少关于openoffice的资源,但是说的过于繁琐,或者没能解决我的问题,终于在不断地探索下找到了解决方法

思路: 将其他文件格式转换为pdf 文件在前段实现预览

项目依赖:

<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>openoffice-springboot</groupId>
    <artifactId>openoffice-springboot</artifactId>
    <version>0.0.1-SNAPSHOT</version>


    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.3.RELEASE</version>
    </parent>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!--jodconverter 核心包 -->
        <!-- https://mvnrepository.com/artifact/org.jodconverter/jodconverter-core -->
        <dependency>
            <groupId>org.jodconverter</groupId>
            <artifactId>jodconverter-core</artifactId>
            <version>4.2.2</version>
        </dependency>

        <!--springboot支持包，里面包括了自动配置类 -->
        <!-- https://mvnrepository.com/artifact/org.jodconverter/jodconverter-spring-boot-starter -->
<dependency>
    <groupId>org.jodconverter</groupId>
    <artifactId>jodconverter-spring-boot-starter</artifactId>
    <version>4.2.2</version>
</dependency>

        
        <!--jodconverter 本地支持包 -->
        <!-- https://mvnrepository.com/artifact/org.jodconverter/jodconverter-local -->
        <dependency>
            <groupId>org.jodconverter</groupId>
            <artifactId>jodconverter-local</artifactId>
            <version>4.2.2</version>
        </dependency>

    <!-- https://mvnrepository.com/artifact/commons-io/commons-io -->
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>2.6</version>
        </dependency>
        <!-- springboot热部署 -->
         <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <optional>true</optional>
            <scope>true</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

这里标注一下核心依赖:

当然要实现此功能,还需要openoffice服务支持, 下载安装地址:
​​ http://www.openoffice.org/download/index.html​​ 至于安装方法(直接下一步直到安装成功即可)

Controller:

安装成功之后就可以写Controller了:
代码:

package com.lcf.controller;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;

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

import org.apache.commons.io.IOUtils;
import org.jodconverter.DocumentConverter;
import org.jodconverter.office.OfficeException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpRequest;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

/**
 * 
 * @author : lichenfei
 * @date : 2019年5月23日
 * @time : 下午6:10:58
 *
 */
@Controller
public class MyController {

    // 第一步：转换器直接注入
    @Autowired
    private DocumentConverter converter;

    @Autowired
    private HttpServletResponse response;

    @RequestMapping("toPdfFile")
    public String toPdfFile() {
    File file = new File("src/main/java/com/lcf/controller/lala.doc");//需要转换的文件
    try {
        File newFile = new File("D:/obj-pdf");//转换之后文件生成的地址
        if (!newFile.exists()) {
        newFile.mkdirs();
        }
        //文件转化
        converter.convert(file).to(new File("D:/obj-pdf/hello.pdf")).execute();
        //使用response,将pdf文件以流的方式发送的前段
        ServletOutputStream outputStream = response.getOutputStream();
        InputStream in = new FileInputStream(new File("D:/obj-pdf/hello.pdf"));// 读取文件
        // copy文件
        int i = IOUtils.copy(in, outputStream);
        System.out.println(i);
        in.close();
        outputStream.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return "This is to pdf";
    }

}

比较重要的步骤: converter.convert(file).to(new File(“D:/obj-pdf/hello.pdf”)).execute();

application.properties配置文件:

server.port=8765


jodconverter.local.enabled=true
#home:安装地址
#jodconverter.local.office-home=C:/Program Files (x86)/OpenOffice 4
jodconverter.local.max-tasks-per-process=10
jodconverter.local.port-numbers=8100
#热部署生效
spring.devtools.restart.enabled=true

注意:
网上有大部分配置文件为:jodconverter.enabled=true , 去掉了中间的local

所以: 如果你使用的是4.2.2 务必按照我的方式去写效果演示

doc文件

预览效果:

index.html文件内容:

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<meta charset="utf-8" />

</head>
<body>
  <button>预览</button>
</body>
<script type="text/javascript" src="../js/jquery-1.11.3.min.js"></script>
<script type="text/javascript">
  $('button').click(function() {
            window.open("http://localhost:8765/html/web/viewer.html?file=http://localhost:8765/toPdfFile"); 
    });
</script>
</html>