servlets

问题 I don't understand why this is so hard and everybody has it's own implementation... So in my server, I generate a .zip file which I want the user to be able to download upon click. So I set up the request, which the server successfully receives and now, i'm struggling with writing the byte array to the output. Here's my code for the response: protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub

问题 I have a Java servlet that sits behind a hardware load balancer. The load balancer only allows https requests. The problem is when I get the request in the servlet, I can only see http, it seems it has been decrypted by the time it gets to the servlet, which makes sense because the servlet should not worry about security. When I want to send a redirect in servlet, however, the request will be blocked by the load balancer because it will be a http request. I read about some solutions and they

问题 I have a Java servlet that sits behind a hardware load balancer. The load balancer only allows https requests. The problem is when I get the request in the servlet, I can only see http, it seems it has been decrypted by the time it gets to the servlet, which makes sense because the servlet should not worry about security. When I want to send a redirect in servlet, however, the request will be blocked by the load balancer because it will be a http request. I read about some solutions and they

问题 Spring MVC uses a DispatcherServlet to route control to an appropriate Controller. But where do filters fit into the flow? If I specify a filter to perform session management or authentication, will the filters always be called before DispatcherServlet? My confusion comes from the fact that they both specify a URL pattern. What happens if they both provide the same url pattern? 回答1: This is not really specific to Spring and Spring MVC. In general fitlers are always called before servlets.

问题 I am performing validation of inputted data such as email, password, name, etc. But I am already stuck on the first stage of validation which is to check if User entered nothing. I already added enctype="multipart/form-data" as mentioned here but now it is always recognizing email as null and I can't forward to the login page in case of success (when email is not null). Code signup.jsp <form method="POST" action="signup" enctype="multipart/form-data"> <input type="email" name="email"

问题 I am performing validation of inputted data such as email, password, name, etc. But I am already stuck on the first stage of validation which is to check if User entered nothing. I already added enctype="multipart/form-data" as mentioned here but now it is always recognizing email as null and I can't forward to the login page in case of success (when email is not null). Code signup.jsp <form method="POST" action="signup" enctype="multipart/form-data"> <input type="email" name="email"

问题 I am performing validation of inputted data such as email, password, name, etc. But I am already stuck on the first stage of validation which is to check if User entered nothing. I already added enctype="multipart/form-data" as mentioned here but now it is always recognizing email as null and I can't forward to the login page in case of success (when email is not null). Code signup.jsp <form method="POST" action="signup" enctype="multipart/form-data"> <input type="email" name="email"

问题 I can't seem to understand how to integrate Swagger to generate API documentation. url: ####:8080/MyService/rest/users/getall I have added Annotations to code and dependency. I try to visit: ####:8080/MyService/rest/ but says its not found. //web.xml <servlet> <servlet-name>mycompany-users-serlvet</servlet-name> <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class> <init-param> <param-name>com.sun.jersey.config.property.packages</param-name> <param-value>com

问题 How to get the data from ajax request in servlet page. Here I'm calling the servlet by $.ajax . var dataRequestObject= {}; dataRequestObject= {Username:uname,Password:pword,Domain:domain,WindowsUser:windowsuser}; var dataRequestHeader= {}; dataRequestHeader= {Username:uname,Password:pword,Domain:domain,WindowsUser:windowsuser}; $.ajax({ type:'POST', url:'http://localhost:8090/SampleServlet1/serv', //calling servlet cache:false, header:dataRequestHeader, data:dataRequestObject, success

问题 I have created an index.html file for a Java (.war) application that I deployed on tomcat. I already have a Java Servlet file that queries a remote db server for a picture i stored there. The java servlet file is called ImageServlet.java. I need the HTML page to display that image that the ImageServlet.java queries. I just don't know how I'm able to reference to the servlet as it retrieves my picture. Below is the ImageServlet file: package test; import java.io.ByteArrayOutputStream; import