上传二进制文件
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小牛编辑
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2023-12-01
下面是一个上传二进制文件的例子,WebService类的代码如下:
package service; import java.io.InputStream; import java.io.OutputStream; import java.io.FileOutputStream; import javax.activation.DataHandler; public class FileService{ // 使用byte[]类型参数上传二进制文件 public boolean uploadWithByte(byte[] file, String filename){ FileOutputStream fos = null; try{ fos = new FileOutputStream(filename); fos.write(file); fos.close(); }catch (Exception e){ return false; } finally{ if (fos != null){ try{ fos.close(); }catch (Exception e){ } } } return true; } private void writeInputStreamToFile(InputStream is, OutputStream os) throws Exception{ int n = 0; byte[] buffer = new byte[8192]; while((n = is.read(buffer)) > 0){ os.write(buffer, 0, n); } } // 使用DataHandler类型参数上传文件 public boolean uploadWithDataHandler(DataHandler file, String filename){ FileOutputStream fos = null; try{ fos = new FileOutputStream(filename); // 可通过DataHandler类的getInputStream方法读取上传数据 writeInputStreamToFile(file.getInputStream(), fos); fos.close(); }catch (Exception e){ return false; } finally{ if (fos != null){ try{ fos.close(); }catch (Exception e){ } } } return true; } }
上面代码在services.xml文件的配置代码如下:
<service name="fileService"> <description> 文件服务 </description> <parameter name="ServiceClass"> service.FileService </parameter> <messageReceivers> <messageReceiver mep="http://www.w3.org/2004/08/wsdl/in-out" class="org.apache.axis2.rpc.receivers.RPCMessageReceiver" /> </messageReceivers> </service>
如果使用wsdl2java命令生成调用Java客户端代码,则需要创建DataHandler类的对象实例,代码如下:
DataHandler dh = new DataHandler(new FileDataSource(imagePath));
wsdl2java命令会为每一个方法生成一个封装方法参数的类,类名为方法名(第一个字符大写),如uploadWithByte方法生成的类名为UploadWithByte。如果要设置file参数的值,可以使用UploadWithByte类的setFile方法,代码如下:
UploadWithByte uwb = new UPloadWithByte(); uwb.setFile(dh);
最后是调用uploadWithByte方法,代码如下(FileServiceStub为wsdl2java生成的stub类名):
FileServiceStub fss = new FileServiceStub(); fss.uploadWithByte(uwb);
如果使用C#调用FileService,则file参数类型均为byte[],代码如下:
MemoryStream ms = new MemoryStream(); Bitmap bitmap = new Bitmap(picUpdateImage.Image); bitmap.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg); service.fileService fs = new WSC.service.fileService(); fs.uploadWithDataHandler(ms.ToArray()); fs.uploadWithByte(ms.ToArray());