获取POST数据的值.docVIP

获取POST数据的值 文章分类:Java编程 ???? 当method为POST，Content-Type为multipart/form-data时，一般应用场景是上传文件，当在该form下还有其它的input时，用request.getParameter(name)则获取不到它的值，需要换一种方式来获取input的值。 例子如下： 1、下面这个类是模拟请求的类，发送一个文件，以及其它的一些参数 Java代码 ? package?com.demo; ?? ?? import?java.io.DataOutputStream; ?? import?java.io.FileInputStream; ?? import?java.io.InputStream; ?? import?java.io.InputStreamReader; ?? import?.HttpURLConnection; ?? import?.URL; ?? ?? ?? public?class?RequestPostTest?{ ?? ?? ????public?static?void?main(String[]?args)?throws?Exception{ ?? ????????//发起post请求 ?? ????????String?urlString=http://localhost:8080/login; ?? ????????String?filePath=D:\\company\\voice\\十渡.wav; ?? ????????URL?connectURL?=?new?URL(urlString); ?? ????????HttpURLConnection?conn?=?(HttpURLConnection)?connectURL.openConnection(); ?? ????????conn.setReadTimeout(100000); ?? ????????conn.setConnectTimeout(100000); ?? ????????conn.setDoInput(true); ?? ????????conn.setDoOutput(true); ?? ????????conn.setUseCaches(false); ?? ????????conn.setRequestMethod(POST); ?? ????????conn.setRequestProperty(Connection,?Keep-Alive); ?? ?? ????????conn.setRequestProperty(Content-Type,?multipart/form-data;); ?? ????????DataOutputStream?dos?=?new?DataOutputStream(?conn.getOutputStream()?); ?? ????????StringBuffer?sb=new?StringBuffer(Content-Disposition:?form-data;); ?? ????????sb.append(loginName=testpwd=test1); ?? ????????dos.writeBytes(sb.toString()); ?? ?? ????????FileInputStream?fileInputStream=new?FileInputStream(filePath); ?? ????????int?bytesAvailable?=?fileInputStream.available(); ?? ????????int?maxBufferSize?=?1024; ?? ????????int?bufferSize?=?Math.min(bytesAvailable,?maxBufferSize); ?? ????????byte[]?buffer?=?new?byte[bufferSize]; ?? ?? //read?file?and?write?it?into?form... ?? ????????int?bytesRead?=?fileInputStream.read(buffer,?0,?bufferSize); ?? ?? ????????while?(bytesRead??0) ?? ????????{ ?? ????????????dos.write(buffer,?0,?bufferSize); ?? ????????????bytesAvailable?=?fileInputStream.available(); ?? ????????????bufferSize?=