servlets

问题 I'm trying to get all the files / folders from a parent folder. I managed to get the ID of the parent folder. When I try to get the file information, I can, if I Use the ID as indicated on this page live example : https://developers.google.com/drive/v2/reference/files/get However, when I try to get any file data with the page code sample : try { File file = service.files().get(fileId).execute(); System.out.println("Title: " + file.getTitle()); System.out.println("Description: " + file

问题 I have all the Struts jar included in WEB-INF/lib and imported to project. I am trying to migrate from simple servlets based project to Struts2. I added filter tag in web.xml and constant tag in struts.xml as per the tutorial , yet I get 404 on servlet invocation. web.xml : <?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi

问题 protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html;charset=UTF-8"); PrintWriter out = response.getWriter(); String action = request.getParameter("action"); try { // System.out.println("in mail servlet"); if (action.equals("show")) { List<EmailSetup> emailSetup_List = emailSetup_lf.findAll(); JSONObject returnJSON = new JSONObject(); JSONArray emailSetup_Array = ListToJSONArray

问题 In my java web application, trying to connect SAP Server. This error is generated. I have placed the sapjco3.dll and sapjco3.jar in WEB-INF/lib/ and also configured in the Java Build Path. I have also set the Path in servlet as System.setProperty("java.library.path", "/WEB-INF/lib"); But also error existing. 回答1: There are several issues in your approach It is not recommended to change java.library.path programmatically, since the property is cached at the JVM start. See Setting "java.library

问题 I am having trouble in returning compressed response (GZip) from my Java Servlet, to a JSP. Flow : Request comes to java servlet Process the request, and create a JSON object, with the response Convert the JSON object to string Compress the response string with GZip The compressed response string is set as attribute in the request object and control passed to JSP In the JSP, the response string (compressed) is printed on screen Precautions : Request object has "Accepting-Encoding" set with

问题 This question already has answers here : java.lang.IllegalArgumentException: The servlets named [X] and [Y] are both mapped to the url-pattern [/url] which is not permitted (6 answers) Closed 4 years ago . I am migrating an existing project from Tomcat 6 to 7. Upon startup I am encountering this logged error message: Jul 02, 2013 2:38:39 PM org.apache.catalina.startup.ContextConfig parseWebXml SEVERE: Parse error in application web.xml file at jndi:/localhost/padd/WEB-INF/web.xml org.xml.sax

问题 I am showing report on some event.I want controller to show popup for save and open . I already set file in response , after setting response i am returning view. Now my question is, I am getting error " java.lang.IllegalStateException: getOutputStream() has already been called for this response" In my controller class i have written following code : ......some Code....... InputStream is = new FileInputStream(new File("c:/reports/test_jasper.pdf")); response.setHeader("Content-Disposition",

问题 We have a issue with an application running under Websphere 6.1.0.31 with the HTTPOnlyCookies setting enabled. The issue is with an Applet that makes a connection via HttpURLConnection to a Servlet. The Applet is passed the JSESSION ID from the JSP page by parameters. In the HttpURLConnect call we set the Cookie header and include the JSESSION ID. The Servlet does not use the cookie passed and will create a new session and cause an error. With HTTPOnlyCookies disabled, this works without any

问题 I made a /header folder in the web pages directory in Netbeans and added an image named header.png . Now I want to access this image file in a servlet using the following code: BufferedImage image = ImageIO.read(getClass().getResource(" /header/header.png")); But this is not happening, it gives the following error: java.lang.IllegalArgumentException: input == null! Below is my project's directory structure: How is this error caused and how can I solve it? 回答1: The Class#getResource() returns

问题 I have the following Spring MVC 3.2 code (it uses the DeferredResult class): @RequestMapping(value = "getMessages", method = RequestMethod.GET, produces = "application/json") @ResponseBody public DeferredResult<List<Message>> getMessages(@RequestParam final Long senderId) { final Long recipientId = memberService.retrieveCurrentMember().getId(); final String messageRequestKey = new StringBuilder().append(senderId).append(":").append(recipientId).toString(); final DeferredResult<List<Message>>