实例如下所示：
コントローラー：@RequestMapping（value = "/{loanid}/{atmttype}"）public void doget（@pathvariable（ "loanid"）string loanid、@pathvariable（ "atmttype"）string atmttype、httpservletrequest req、httpservletresporspenseponse response） hashmap <string、string>（）; map.put（ "loanid"、loanid）; map <string、string> urlbyloanid = new hashmap <string、string>（）; // map <string、string> urlbyloanid = zcmqueryinfoservice.queryurlbyloanid（map）; try {if（urlbyloanid！= null）{string wjurl = "http://10.0.15.11:8080/gateway//10/11/compact_seal_17101119371231615_7.pdf"; // string wjurl = urlbyloanid.get（ "url"）; int i = wjurl.lastindexof（ "/"）;文字列filename = wjurl.substring（i+1）; url url = new url（wjurl）; httpurlconnection conn =（httpurlconnection）url.openconnection（）; //设置超时间为3秒conn.setConnectTimeout（3*1000）; //防止屏蔽程序抓取而返回403错误conn.setRequestProperty（ "user-agent"、 "mozilla/4.0（互換; msie 5.0; windows nt; digext）"）; // // byte [] bs = readinputStream（inputstream）; Response.setContentType（ "Application/Octet-Stream; charset = ISO8859-1"）; BufferedOutputStream出力= null; bufferedinputStream input = null; try {output = new BufferedOutputStream（respons.getOutputStream（））; //中文文件名必须转码为ISO8859-1、否则为乱码文字列filenAmedOwn = new String（filename.getBytes（）、 "ISO8859-1"）; // response.setheader（ "content-disposition"、 "attachment; filename =" + filenamedown）; output.write（bs）; Response.flushbuffer（）; } catch（例外e）{log.error（ "logファイルエラーをダウンロード"、e）; } //用户可能取消了下载最後に{if（input！= null）try {input.close（）; } catch（ioexception e）{e.printstacktrace（）; } if（output！= null）try {output.close（）; } catch（ioexception e）{e.printstacktrace（）; }}}} catch（Exception e）{e.printstacktrace（）; }}/ ** *从输入流中获取字节数组 * @param inputstream * @return * @throws ioexception */ public static byte [] readinputStream（inputstream inputstream）throws ioexception {byte [] buffer = new byte [1024]; int len = 0; bytearrayoutputStream bos = new bytearrayoutputStream（）; while（（len = inputstream.read（buffer））！= -1）{bos.write（buffer、0、len）; } bos.close（）; bos.tobytearray（）; }以上这篇Java