如何在 java servlet 中 link 外部 css？

Question

我有一个 report.jsp 页面，如下所示（注意：我刚刚添加了必要的代码）。

<form name="report" action="../printOrganization" method="post">
<table>
    <tr>
        <td>
            Organization name: <input type="text" name="orgName" />
        </td>
    </tr>
    <tr>
        <td>
            <input type="submit" value="Submit" name="action" /> 
        </td>
    </tr>
</table>

当用户单击 report.jsp 页面的 "Submit" 按钮时。请求被发送到名为 OrganizationServlet 的 servlet。请求由 doPost 方法处理。 OrganizationServlet 中的代码如下所示：

public class OrganizationServlet extends HttpServlet {

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

    String organizatio = request.getParameter("orgName");

    if (organizatio.equals("ABC")) {
        printAllOrganization();

    }
}

public void printAllOrganization()
{
    PrintWriter pw = response.getWriter();
    response.setContentType("text/html");

    pw.println("<!DOCTYPE html public \"-//w3c//dtd html 4.0 " + "transitional//en\">\n");
    pw.println("<html>\n");
    pw.println("<head>\n");
    pw.println("<title> Print Organization </title>\n");
    pw.println("<link rel=\"stylesheet\" type=\"text/css\" HREF=\"../styles/myStyle.css\">\n"); // This style sheet doesn't show effect when program run in browser
    pw.println("</head>\n");

    pw.println("<body>\n");

        //printing all organization code is here!

    pw.println("</body>\n");


    pw.println("</html>\n");
    pw.close();
}

web.xml处理请求的部分如下所示：

<servlet>
  <servlet-name>servletForOrganization</servlet-name>
  <servlet-class>com.project.report.OrganizationServlet</servlet-class>
</servlet>

<servlet-mapping>
  <servlet-name>servletForOrganization</servlet-name>
  <url-pattern>/printOrganization</url-pattern>
</servlet-mapping>

我的 css 文件位于此路径中：

MyProject > resource > styles > myStyle.css

当我在浏览器中运行我的应用程序时，OrganizationServlet servlet 的 printAllOrganization() 方法中的 css 样式没有显示任何效果。有人可以帮我解决这个问题吗？提前谢谢你。

Answer 1

添加到您的主页JSP文件中：

<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>

  <link rel="stylesheet" href="<c:url value="/resource/styles/myStyle.css" />">

在调度器中添加-servlet.xml:

  <mvc:resources mapping="/resource/**" location="/resource/" />

修改你的class：

 public class OrganizationServlet extends HttpServlet {

        protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

            String organizatio = request.getParameter("orgName");

            if (organizatio.equals("ABC")) {
                printAllOrganization(request);

            }
        }

        public void printAllOrganization(HttpServletRequest request) {
            PrintWriter pw = response.getWriter();
            response.setContentType("text/html");

            pw.println("<!DOCTYPE html public \"-//w3c//dtd html 4.0 " + "transitional//en\">\n");
            pw.println("<html>\n");
            pw.println("<head>\n");
            pw.println("<title> Print Organization </title>\n");
            pw.println("<link rel=\"stylesheet\" type=\"text/css\" HREF=\"" + request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + request.getContextPath() + "/resource/styles/myStyle.css\">\n");
            pw.println("</head>\n");

            pw.println("<body>\n");

            //printing all organization code is here!
            pw.println("</body>\n");

            pw.println("</html>\n");
            pw.close();
        }

如何在 java servlet 中 link 外部 css？

How to link external css in java servlet?

css

java

jsp

web.xml

servlets