HttpClient 上传文件、下载文件-白红宇

HttpClient 上传文件、下载文件

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发布时间：2019-06-22

本文共 3738 字，大约阅读时间需要 12 分钟。

/** * FileName: PDFToDOCXUtil * Author:   xiangjunzhong * Date:     2018/3/6 14:17 * Description: PDF转DOCX工具类 */package com.gibbons.commonserver.util;import org.apache.http.HttpEntity;import org.apache.http.ParseException;import org.apache.http.client.methods.CloseableHttpResponse;import org.apache.http.client.methods.HttpPost;import org.apache.http.entity.mime.HttpMultipartMode;import org.apache.http.entity.mime.MultipartEntityBuilder;import org.apache.http.entity.mime.content.FileBody;import org.apache.http.impl.client.CloseableHttpClient;import org.apache.http.impl.client.HttpClients;import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;import org.apache.http.util.CharsetUtils;import org.apache.http.util.EntityUtils;import java.io.*;/** * 〈一句话功能简述〉
 * 〈PDF转DOCX工具类〉 * * @author xiangjunzhong * @create 2018/3/6 14:17 * @since 1.0.0 */public class PDFToDOCXUtil {    private static CloseableHttpClient httpClient;    private static final String URL = "XXXXXXXXXXXXXXXXXXXXXXXXXXX";    static {        PoolingHttpClientConnectionManager cm = new PoolingHttpClientConnectionManager();        cm.setMaxTotal(100);        cm.setDefaultMaxPerRoute(20);        cm.setDefaultMaxPerRoute(50);        httpClient = HttpClients.custom().setConnectionManager(cm).build();    }    /**     * PDF TO DOCX     *     * @throws ParseException     * @throws IOException     */    public static void postFile(String path) throws ParseException, IOException {        try {            String filePath = new String(path);            HttpPost httpPost = new HttpPost(URL);            File file = new File(filePath);            FileBody bin = new FileBody(file);            HttpEntity reqEntity = MultipartEntityBuilder.create().setMode(HttpMultipartMode.BROWSER_COMPATIBLE)                    .addPart("data", bin)                    .setCharset(CharsetUtils.get("UTF-8")).build();            httpPost.setEntity(reqEntity);            // 发起请求 并返回请求的响应            CloseableHttpResponse response = httpClient.execute(httpPost);            try {                // 打印响应状态                System.out.println("----------------------------------------:" + response.getStatusLine());                // 获取响应对象                HttpEntity resEntity = response.getEntity();                if (resEntity != null) {                    // 打印响应长度                    System.out.println("Response content length: " + resEntity.getContentLength());                    inputStreamToFile(resEntity.getContent(), new File(filePath.substring(0, filePath.lastIndexOf(".")) + ".docx"));                }                // 销毁                EntityUtils.consume(resEntity);            } finally {                response.close();            }        } finally {            httpClient.close();        }    }    public static void inputStreamToFile(InputStream ins, File file) throws IOException {        OutputStream os = new FileOutputStream(file);        int bytesRead = 0;        byte[] buffer = new byte[8192];        while ((bytesRead = ins.read(buffer, 0, 8192)) != -1) {            os.write(buffer, 0, bytesRead);        }        os.close();        ins.close();    }    public static void main(String[] args) {        try {            postFile("C:\\Users\\Administrator\\Desktop\\合同111.pdf");        } catch (IOException e) {            e.printStackTrace();        }    }}

Maven 依赖：


        
     
      org.apache.httpcomponents
         
     
      httpclient
         
     
      4.5.5
     
    
        
     
      org.apache.httpcomponents
         
     
      httpcore
         
     
      4.4.9
     
    
        
     
      org.apache.httpcomponents
         
     
      httpmime
         
     
      4.5.5