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HttpClient通过Post上传文件（转）
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在之前一段的項目中，使用Java模仿Http Post方式發送參數以及文件，單純的傳遞參數或者文件可以使用URLConnection進行相應的處理。
????????? 但是項目中涉及到既要傳遞普通參數，也要傳遞多個文件（不是單純的傳遞XML文件）。在網上尋找之后，發現是使用HttClient來進行響應的操作，起初嘗試多次依然不能傳遞參數和傳遞文件，后來發現時因為當使用HttpClient時，不能使用request.getParameter()對普通參數進行獲取，而要在服務器端使用Upload來進行操作。
????????? HttpClient4.2 jar下載 ：http://download.csdn.net/detail/just_szl/4370574
???????? 客戶端代碼：
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[java]?view plaincopy
import?java.io.ByteArrayOutputStream;??import?java.io.File;??import?java.io.IOException;??import?java.io.InputStream;??import?org.apache.http.HttpEntity;??import?org.apache.http.HttpResponse;??import?org.apache.http.HttpStatus;??import?org.apache.http.ParseException;??import?org.apache.http.client.HttpClient;??import?org.apache.http.client.methods.HttpPost;??import?org.apache.http.entity.mime.MultipartEntity;??import?org.apache.http.entity.mime.content.FileBody;??import?org.apache.http.impl.client.DefaultHttpClient;??import?org.apache.http.util.EntityUtils;????public?class?HttpPostArgumentTest2?{????????????public?void?SubmitPost(String?url,String?filename1,String?filename2,?String?filepath){????????????????????HttpClient?httpclient?=?new?DefaultHttpClient();????????????????????try?{????????????????????HttpPost?httppost?=?new?HttpPost(url);????????????????????????????FileBody?bin?=?new?FileBody(new?File(filepath?+?File.separator?+?filename1));??????????????????????????????FileBody?bin2?=?new?FileBody(new?File(filepath?+?File.separator?+?filename2));????????????????????????????StringBody?comment?=?new?StringBody(filename1);????????????????MultipartEntity?reqEntity?=?new?MultipartEntity();????????????????????????????reqEntity.addPart("file1",?bin);?????????????reqEntity.addPart("file2",?bin2);?????????????reqEntity.addPart("filename1",?comment);????????????httppost.setEntity(reqEntity);????????????????????????????HttpResponse?response?=?httpclient.execute(httppost);??????????????????????????????????????????????int?statusCode?=?response.getStatusLine().getStatusCode();??????????????????????????????????????????????if(statusCode?==?HttpStatus.SC_OK){????????????????????????????????????????System.out.println("服務器正常響應.....");????????????????????????????????????HttpEntity?resEntity?=?response.getEntity();??????????????????????????????????????????????????????System.out.println(EntityUtils.toString(resEntity));??????????????????????????????????????????????????????????????????????System.out.println(resEntity.getContent());???????????????????????EntityUtils.consume(resEntity);??????????????}????????????????????????????????}?catch?(ParseException?e)?{??????????????????????????????????e.printStackTrace();??????????????}?catch?(IOException?e)?{??????????????????????????????????e.printStackTrace();??????????????}?finally?{??????????????????try?{???????????????????????httpclient.getConnectionManager().shutdown();???????????????????}?catch?(Exception?ignore)?{????????????????????????????????????????}??????????????}??????????}??????????????????????public?static?void?main(String[]?args)?{????????????????????????????HttpPostArgumentTest2?httpPostArgumentTest2?=?new?HttpPostArgumentTest2();????????????????????httpPostArgumentTest2.SubmitPost("http://127.0.0.1:8080/demo/receiveData.do",??????????????????"test.xml","test.zip","D://test");??????}????????}?? 服務端代碼：
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[java]?view plaincopy
public?void?receiveData(HttpServletRequest?request,?HttpServletResponse?response)?throws?AppException{????????????PrintWriter?out?=?null;??????????response.setContentType("text/html;charset=UTF-8");????????????????????Map?map?=?new?HashMap();??????????FileItemFactory?factory?=?new?DiskFileItemFactory();??????????ServletFileUpload?upload?=?new?ServletFileUpload(factory);??????????File?directory?=?null;????????????List<FileItem>?items?=?new?ArrayList();??????????try?{??????????????items?=?upload.parseRequest(request);??????????????????????????Iterator<FileItem>?it?=?items.iterator();??????????????while?(it.hasNext())?{??????????????????FileItem?fItem?=?(FileItem)?it.next();??????????????????String?fName?=?"";??????????????????Object?fValue?=?null;??????????????????if?(fItem.isFormField())?{?????????????????????fName?=?fItem.getFieldName();??????????????????????fValue?=?fItem.getString("UTF-8");??????????????????????map.put(fName,?fValue);??????????????????}?else?{?????????????????????fName?=?fItem.getFieldName();??????????????????????fValue?=?fItem.getInputStream();??????????????????????map.put(fName,?fValue);??????????????????????String?name?=?fItem.getName();??????????????????????if(name?!=?null?&&?!("".equals(name)))?{??????????????????????????name?=?name.substring(name.lastIndexOf(File.separator)?+?1);????????????????????????????????????????????????????String?timestamp_Str?=?TimeUtils.getCurrYearYYYY();??????????????????????????directory?=?new?File("d://test");?????????????????????????????????directory.mkdirs();????????????????????????????????????????????????????String?filePath?=?("d://test")+?timestamp_Str+?File.separator?+?name;??????????????????????????map.put(fName?+?"FilePath",?filePath);????????????????????????????????????????????????????InputStream?is?=?fItem.getInputStream();??????????????????????????FileOutputStream?fos?=?new?FileOutputStream(filePath);??????????????????????????byte[]?buffer?=?new?byte[1024];??????????????????????????while?(is.read(buffer)?>?0)?{??????????????????????????????fos.write(buffer,?0,?buffer.length);??????????????????????????}??????????????????????????fos.flush();??????????????????????????fos.close();??????????????????????????map.put(fName?+?"FileName",?name);??????????????????????}??????????????????}??????????????}??????????}?catch?(Exception?e)?{??????????????System.out.println("讀取http請求屬性值出錯!");??????????????logger.error("讀取http請求屬性值出錯");??????????}????????????????????????????????????????????????????????????????????try?{??????????????out?=?response.getWriter();??????????????out.print("{success:true,?msg:'接收成功'}");??????????????out.close();??????????}?catch?(IOException?e)?{??????????????e.printStackTrace();??????????}??????????}??
http://blog.csdn.net/Just_szl/article/details/7659347
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