用于调用Servlet的Image Src [英] Image Src for calling a Servlet

问题描述

我想从img src调用一个Servlet。我已经定义了一个名为ImageProducerServlet的Servlet类，并在web.xml中注册了它：

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>

在这个servlet的doGet中我刚写了一个 System.out 。现在从JSF页面我将servlet称为：

In this servlet's doGet I just wrote a System.out. Now From the JSF page I am calling that servlet as:

<img src="/imageProducerServlet" id="id"/>

我原以为它会打印System.out！但它没有。

I was expecting that it would print the System.out! But it doesn't.

添加img的页面的URL是：

The URL for the page where the img is added is:

http：// localhost：7101 / mycompany / faces / home

如果我在地址栏中写下以下网址：

If I write in the address bar the follwoing URL:

http：// localhost：7101 / mycompany / imageproducerservlet

然后按回车键，然后servlet的doGet正在执行。

and press enter then the servlet's doGet is executing.

我无法找到它的解决方案。

I am unable to find it's solution.

如果我得到您的建议，将会非常有帮助。

It will be very helpful if I get your suggestions.

谢谢和问候。

推荐答案

如果这样做：

http://localhost:7101/mycompany/imageproducerservlet

然后你需要你的img标签看起来像这样：

then you need your img tag to look like that:

<img src="/mycompany/imageProducerServlet" id="id"/>

这篇关于用于调用Servlet的Image Src的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！