JSP servlet HTTP状态404请求的资源不可用

InsuranceINFO.jsp：

<div class="content">
<h3>Insurance policies</h3><br><br>
<form action="/Project/src/servlet/PolicyServlet" method="POST">
<jsp:useBean id="pBean" class="servlet.Policy"/>
<jsp:setProperty name="pBean" property="policyNo" value="P1"/>
<h2>P1</h2>
<input type="hidden" name="P1value" value="P1">
<input type="submit">
</div>
</form>

试试

您应该具有如下所示的web.xml

<servlet>
    <servlet-name>PolicyServlet</servlet-name>
    <servlet-class>servlet.PolicyServlet</servlet-class>
</servlet>

<servlet-mapping>
    <servlet-name>PolicyServlet</servlet-name>
    <url-pattern>/servlet/PolicyServlet</url-pattern>
</servlet-mapping>

PolicyServlet
servlet.PolicyServlet
PolicyServlet
/servlet/PolicyServlet

不要将操作直接指向源代码，这需要使用servlet的web.xml映射来完成

Project-
    Java Resources-
        src-
            servlet-
                PolicyServlet.java
WebContent-
    views-
        zyViews-
            InsuranceINFO.jsp

<servlet>
    <servlet-name>PolicyServlet</servlet-name>
    <servlet-class>servlet.PolicyServlet</servlet-class>
</servlet>

<servlet-mapping>
    <servlet-name>PolicyServlet</servlet-name>
    <url-pattern>/servlet/PolicyServlet</url-pattern>
</servlet-mapping>