servlets

问题 I got a HttpServletRequest request in my Spring Servlet which I would like to forward AS-IS (i.e. GET or POST content) to a different server. What would be the best way to do it using Spring Framework? Do I need to grab all the information and build a new HTTPUrlConnection ? Or there is an easier way? 回答1: Unfortunately there is no easy way to do this. Basically you'll have to reconstruct the request, including: correct HTTP method request parameters requests headers ( HTTPUrlConnection doesn

问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 6 years ago . Most of the places on the internet say it stands for WEB INF ormation. I rather doubt it. The folder contains executables. Information is not a suitable name for it. 回答1: As far as I know, "INF" stands for "Information", as you said. It probably was named WEB-INF for

问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 6 years ago . Most of the places on the internet say it stands for WEB INF ormation. I rather doubt it. The folder contains executables. Information is not a suitable name for it. 回答1: As far as I know, "INF" stands for "Information", as you said. It probably was named WEB-INF for

问题 How does a single servlet handle multiple client requests coming in the form of user requests ? Based on the singleton design pattern I know we get a single instance of servlet created , but how does a single servlet handle millions of requests . Confused about the threading involved in it also. Also does any browser specifications or settings come handy out here for sending the requests across or generating the threads sent out for the requests. Is it the same for all frameworks or it

问题 I want to call a Servlet from img src. I have defined a Servlet class with name ImageProducerServlet and registered it in web.xml: <servlet> <servlet-name>ImageProducerServlet</servlet-name> <servlet-class>com.company.servlet.ImageProducerServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>ImageProducerServlet</servlet-name> <url-pattern>/imageproducerservlet</url-pattern> </servlet-mapping> In this servlet's doGet I just wrote a System.out . Now From the JSF page I am calling

问题 I want to call a Servlet from img src. I have defined a Servlet class with name ImageProducerServlet and registered it in web.xml: <servlet> <servlet-name>ImageProducerServlet</servlet-name> <servlet-class>com.company.servlet.ImageProducerServlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>ImageProducerServlet</servlet-name> <url-pattern>/imageproducerservlet</url-pattern> </servlet-mapping> In this servlet's doGet I just wrote a System.out . Now From the JSF page I am calling

问题 This question already has answers here : Accessing post variables using Java Servlets (5 answers) Closed 4 years ago . I want to pass a javascript variable to a java servlet. I am developing a web application. This is my html code: <p id="test">Some text</p> And this is what i write in the javascript file: var myVar = document.getElementById('test').innerText; $.ajax({ url: 'Test', data: { myPostVar: myVar }, type: 'POST' }); And then this in the servlet (in the doGet): String result =

问题 My server moved to a new location and I need to redirect requests to the new location. If I use HttpServletResponse.sendRedirect(new_server_location), I am losing all the POST data coming along with the original request. Is it possible to redirect to the new location without losing any of the POST data? The POST data can contain sensitive information like passwords. So making a GET request on the new server location is NOT an option. Thanks in advance for the responses. 回答1: The sendRedirect(

问题 My server moved to a new location and I need to redirect requests to the new location. If I use HttpServletResponse.sendRedirect(new_server_location), I am losing all the POST data coming along with the original request. Is it possible to redirect to the new location without losing any of the POST data? The POST data can contain sensitive information like passwords. So making a GET request on the new server location is NOT an option. Thanks in advance for the responses. 回答1: The sendRedirect(

问题 This question already has answers here : How to retrieve <servlet><init-param> value from web.xml in Servlet? (3 answers) Closed 2 years ago . In web.xml I have two initial parameters name Premier and Regular. To show you the code this is it. <servlet> <servlet-name>StockServelt</servlet-name> <servlet-class>test.StockServelt</servlet-class> <init-param> <param-name>Premier</param-name> <param-value>/Premier</param-value> </init-param> <init-param> <param-name>Regular</param-name> <param