HttpClient4.x模拟上传文件

最新推荐文章于 2022-07-16 07:31:15 发布

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最新推荐文章于 2022-07-16 07:31:15 发布

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文章标签： python java

原文链接：https://my.oschina.net/cshuangxi/blog/262354

本文提供了一个使用Java进行文件上传的示例代码。通过HttpClient发送包含文件和注释的multipart请求到指定的Servlet，展示了如何构造请求实体并执行HTTP Post请求。

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public static void main(String[] args) throws Exception {
        if (args.length != 1)  {
            System.out.println("File path not given");
            System.exit(1);
        }
        CloseableHttpClient httpclient = HttpClients.createDefault();
        try {
            HttpPost httppost = new HttpPost("http://localhost:8080" +
                    "/servlets-examples/servlet/RequestInfoExample");

            FileBody bin = new FileBody(new File(args[0]));
            StringBody comment = new StringBody("A binary file of some kind", ContentType.TEXT_PLAIN);

            HttpEntity reqEntity = MultipartEntityBuilder.create()
                    .addPart("bin", bin)
                    .addPart("comment", comment)
                    .build();


            httppost.setEntity(reqEntity);

            System.out.println("executing request " + httppost.getRequestLine());
            CloseableHttpResponse response = httpclient.execute(httppost);
            try {
                System.out.println("----------------------------------------");
                System.out.println(response.getStatusLine());
                HttpEntity resEntity = response.getEntity();
                if (resEntity != null) {
                    System.out.println("Response content length: " + resEntity.getContentLength());
                }
                EntityUtils.consume(resEntity);
            } finally {
                response.close();
            }
        } finally {
            httpclient.close();
        }
    }

转载于:https://my.oschina.net/cshuangxi/blog/262354