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)。在網上尋找之後,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,後來發現時因爲當使用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:
- 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;
- /**
- *
- * @author <a href="mailto:[email protected]"> Geray</a>
- * @version 1.0,2012-6-12
- */
- public class HttpPostArgumentTest2 {
- //file1與file2在同一個文件夾下 filepath是該文件夾指定的路徑
- 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);//file1爲請求後臺的File upload;屬性
- reqEntity.addPart("file2", bin2);//file2爲請求後臺的File upload;屬性
- reqEntity.addPart("filename1", comment);//filename1爲請求後臺的普通參數;屬性
- 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));//httpclient自帶的工具類讀取返回數據
- System.out.println(resEntity.getContent());
- EntityUtils.consume(resEntity);
- }
- } catch (ParseException e) {
- // TODO Auto-generated catch block
- e.printStackTrace();
- } catch (IOException e) {
- // TODO Auto-generated catch block
- e.printStackTrace();
- } finally {
- try {
- httpclient.getConnectionManager().shutdown();
- } catch (Exception ignore) {
- }
- }
- }
- /**
- * @param args
- */
- public static void main(String[] args) {
- // TODO Auto-generated method stub
- 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:
- 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);
- // 得到所有的文件
- Iterator<FileItem> it = items.iterator();
- while (it.hasNext()) {
- FileItem fItem = (FileItem) it.next();
- String fName = "";
- Object fValue = null;
- if (fItem.isFormField()) { // 普通文本框的值
- fName = fItem.getFieldName();
- // fValue = fItem.getString();
- fValue = fItem.getString("UTF-8");
- map.put(fName, fValue);
- } else { // 獲取上傳文件的值
- 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 stamp = StringUtils.getFormattedCurrDateNumberString();
- 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!");
- // e.printStackTrace();
- logger.error("讀取http請求屬性值出錯");
- }
- // 數據處理
- try {
- out = response.getWriter();
- out.print("{success:true, msg:'接收成功'}");
- out.close();
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
傳送過程中涉及中文亂碼問題暫時沒有解決留到後續完成