1. 首先需要对应的JAR包 导入 httpmime-4.1.1.jar。
package url;
import io.IoStreamUtil;
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.client.ClientProtocolException;
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.entity.mime.content.StringBody;
import org.apache.http.impl.client.DefaultHttpClient;
/**
* httpclient上传文件
* @author linwei
*
*/
public class MultipartEntityUtil {
public static String postFile(File file,String url) throws ClientProtocolException, IOException {
FileBody bin = null;
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url);
if(file != null) {
bin = new FileBody(file);
}
StringBody username = new StringBody("13696900475");
StringBody password = new StringBody("13696900475");
//请记住，这边传递汉字会出现乱码，解决方法如下,设置好编码格式就好
//new StringBody("汉字",Charset.forName("UTF-8")));
MultipartEntity reqEntity = new MultipartEntity();
reqEntity.addPart("username", username);
reqEntity.addPart("password", password);
reqEntity.addPart("data", bin);
httppost.setEntity(reqEntity);
System.out.println("执行: " + httppost.getRequestLine());
HttpResponse response = httpclient.execute(httppost);
System.out.println("statusCode is " + response.getStatusLine().getStatusCode());
HttpEntity resEntity = response.getEntity();
System.out.println("----------------------------------------");
System.out.println(response.getStatusLine());
if (resEntity != null) {
System.out.println("返回长度: " + resEntity.getContentLength());
System.out.println("返回类型: " + resEntity.getContentType());
InputStream in = resEntity.getContent();
System.out.println("in is " + in);
System.out.println(IoStreamUtil.getStringFromInputStream(in));
}
if (resEntity != null) {
resEntity.consumeContent();
}
return null;
}
public static void main(String[] args) throws ClientProtocolException, IOException {
File file = new File("d:/rss.xml");
String url = "http://localhost:8080/webtest/servlet/URLTest";
postFile(file,url);
}
}
2. 服务端的接收解析代码(同样的，服务端也需要导入上面提到的JAR包) (特别注释：在servlet中直接获取的request是可以正常解析的，但是，在ACTION中获取的request则是通过ACTION内部的类进行了封装，因此，在ACTION中执行以下代码，upload.parseRequest(request)方法执行返回的是空的，暂没找到解决办法。)
//commons-fileupload.jar commons-io
request.setCharacterEncoding("UTF-8");
boolean isMultipart = ServletFileUpload.isMultipartContent(request);
FileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
try {
List items = upload.parseRequest(request);
Iterator iter = items.iterator();
while (iter.hasNext()) {
FileItem item = (FileItem) iter.next();
if (item.isFormField()) {
//普通文本信息处理
String paramName = item.getFieldName();
String paramValue = item.getString();
System.out.println(paramName + ":" + paramValue);
} else {
//上传文件信息处理
String fileName = item.getName();
byte[] data = item.get();
String filePath = "d:/ssssss.txt";
FileOutputStream fos = new FileOutputStream(filePath);
fos.write(data);
fos.close();
}
}
} catch (FileUploadException e) {
e.printStackTrace();
}
}
