测试文件下载接口代码记录

来源：互联网发布：httppost json参数编辑：程序博客网时间：2024/06/07 22:21

//将初始url转化为URL对象↓↓URL url =new URL("http://localhost:8080/vtm1/clientInterface.do?type=downFile");//打开url连接HttpURLConnection conn =(HttpURLConnection)url.openConnection();连接设置conn.setDoOutput(true);conn.setRequestMethod("POST");conn.setREquestProperty("content-type","application/json;chartset=utf-8");//conn.connect();←在conn.getOutputStream()会隐含的进行connect,所以不调用这个也可以OutputStream os=conn.getOutputStream();os.write(message.getBytes());//向输出流写出数据message为要写出的数据,数据将存到内存缓冲区os.flush();//刷新流os.close();/关闭流InputStream is =conn.getInputStream();//将缓存区中封装好的完整的HTTP请求电文发送到服务端//↑↑↑上面的为实际发送请求的代码段//将服务器返回的数据流写入指定的文件final int BUF_LEN = 8192;byte[] buffer = new byte[BUF_LEN];OutputStream os = new FileOutputStream("D:/templ/tmp.data");int nRead = 0;while (-1 != (nRead = is.read(buffer,0,BUF_LEN))) {os.write(buffer, 0, nRead);}

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