使用HttpClient实现客户端（非浏览器）文件的上传下载

红太狼 2022-05-09 04:42 225阅读 0赞

通过访问/busi/remote/getIcCardsFileByDevid接口，返回得到的是一个文件，我们可以接收还可以修改本地存储地址（localFileName）

public static void main(String[] args) {
            String  remoteFileName="";
            String localFileName="E:\\test.zip";
            HttpClient client = new HttpClient();
            PostMethod get = null;
            FileOutputStream output = null;
            try {
                String url="xxxxxxxxxxxxxxxxx/busi/remote/getIcCardsFileByDevid?sign=xxxxxxxxxxxx&timestamp=xxxxxxxx";
                get = new PostMethod(url);
                get.setRequestHeader("Content-Type","application/json");
                get.addParameter("projectCode", "xxxxx");*/
                String str="{\"devIds\":\"xxxxxxxx0000023\",\"projectCode\":\"xxxx6\"}";
                get.setRequestBody(str);
                int i = client.executeMethod(get);
                if (200 == i) {
                    System.out.println("The response value of token:" + get.getResponseHeader("token"));
                    File storeFile = new File(localFileName);
                    if(!storeFile.exists()){
                        storeFile.createNewFile();
                    }
                    output = new FileOutputStream(storeFile);
                    IOUtils.copy(get.getResponseBodyAsStream(),output);
    
                    // 得到网络资源的字节数组,并写入文件
                   // output.write(get.getResponseBody());
                } else {
                    System.out.println("DownLoad file occurs exception, the error code is :" + i);
                }
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                try {
                    if (output != null) {
                        output.close();
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
                get.releaseConnection();
                client.getHttpConnectionManager().closeIdleConnections(0);
            }

参考代码：[https://www.cnblogs.com/Scott007/p/3817285.html][https_www.cnblogs.com_Scott007_p_3817285.html]

[https_www.cnblogs.com_Scott007_p_3817285.html]: https://www.cnblogs.com/Scott007/p/3817285.html