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Servlet que faz upload de arquivos no diretório configurado no init-param "diretorio", utilizando a biblioteca commons-fileupload.
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| <html> | |
| <body> | |
| <form action="upload" method="post" enctype="multipart/form-data"> | |
| <input type="text" name="texto"> | |
| <input type="file" name="arquivo"> | |
| <input type="submit" value="Upload"> | |
| </form> | |
| </body> | |
| </html> |
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| Baixar os seguintes arquivos e colocar em WEB-INF\lib\ | |
| http://repo1.maven.org/maven2/commons-fileupload/commons-fileupload/1.3/commons-fileupload-1.3.jar | |
| http://repo1.maven.org/maven2/commons-io/commons-io/2.2/commons-io-2.2.jar |
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| package upload; | |
| import java.io.File; | |
| import java.io.IOException; | |
| import java.io.PrintWriter; | |
| import java.util.Iterator; | |
| import java.util.List; | |
| import javax.servlet.ServletConfig; | |
| import javax.servlet.ServletException; | |
| import javax.servlet.http.HttpServlet; | |
| import javax.servlet.http.HttpServletRequest; | |
| import javax.servlet.http.HttpServletResponse; | |
| import org.apache.commons.fileupload.FileItem; | |
| import org.apache.commons.fileupload.disk.DiskFileItemFactory; | |
| import org.apache.commons.fileupload.servlet.ServletFileUpload; | |
| public class UploadArquivoServlet extends HttpServlet { | |
| private File diretorio; | |
| @Override | |
| public void init(ServletConfig config) throws ServletException { | |
| super.init(config); | |
| String path = config.getInitParameter("diretorio"); | |
| diretorio = new File(path); | |
| diretorio.mkdirs(); | |
| } | |
| @Override | |
| protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { | |
| PrintWriter out = response.getWriter(); | |
| boolean isMultipart = ServletFileUpload.isMultipartContent(request); | |
| if (!isMultipart) { | |
| out.println("<h1>Voce não enviou um arquivo!</h1>"); | |
| return; | |
| } | |
| for (String elemento : request.getParameterMap().keySet()) { | |
| System.out.println(elemento); | |
| } | |
| DiskFileItemFactory factory = new DiskFileItemFactory(); | |
| factory.setRepository(diretorio); | |
| ServletFileUpload upload = new ServletFileUpload(factory); | |
| try { | |
| List<FileItem> items = upload.parseRequest(request); | |
| for (FileItem item : items ) { | |
| if (!item.isFormField()) { | |
| processUploadedFile(item); | |
| } else { | |
| //para inputs que nao sao 'file', isFormField() é verdadeiro | |
| String nomeDoCampo = item.getFieldName(); | |
| String valorDoCampo = item.getString(); | |
| System.out.println(nomeDoCampo + ": " + valorDoCampo); | |
| } | |
| } | |
| out.println("<h1>Arquivo gravado!</h1>"); | |
| } catch (Exception e) { | |
| out.println("<h1>Erro ao escrever no arquivo!</h1>"); | |
| return; | |
| } | |
| } | |
| private void processUploadedFile(FileItem item) throws Exception { | |
| String fileName = item.getName(); | |
| File uploadedFile = new File(diretorio, fileName); | |
| item.write(uploadedFile); | |
| } | |
| } |
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| <?xml version="1.0" encoding="UTF-8"?> | |
| <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0"> | |
| <servlet> | |
| <servlet-name>upload</servlet-name> | |
| <servlet-class>upload.UploadArquivoServlet</servlet-class> | |
| <init-param> | |
| <param-name>diretorio</param-name> | |
| <param-value>D:/Alexandre_Silva/uploads</param-value> | |
| </init-param> | |
| </servlet> | |
| <servlet-mapping> | |
| <servlet-name>upload</servlet-name> | |
| <url-pattern>/upload</url-pattern> | |
| </servlet-mapping> | |
| </web-app> |
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