HTTP 状态 404 - 未找到 Servlet
HTTP Status 404 - Servlet not found
我在 Eclipse 中有一个项目并试图从 Web 浏览器调用一个 servlet。该图显示了我的项目的结构。尽管我在注释中设置了 url
我仍然找不到资源。
这是我的代码:
package java.enablingKeyWordSearch;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet(asyncSupported = false, name = "HelloServlet", urlPatterns = {"/hello"})
public class TestServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
resp.setContentType("text/html");
PrintWriter out = resp.getWriter();
out.write("<h2>Hello Servlet One </h2>");
out.close();
}
}
我试过使用以下方法调用 servlet:
http://localhost:8080/MultiKeywordSearch/hello
http://localhost:8080/MultiKeywordSearch/src/java/enablingKeyWordSearch/hello
...等等。然而,我收到 HTTP 状态 404 错误。
这是我的 web.xml
文件的内容:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
<display-name>MultiKeywordSearch</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
</web-app>
我正在使用 Apache Tomcat v8.0,如果这有区别的话。
更新:在新的屏幕截图中显示源列表;删除了 java 命名空间
编辑 2.0
web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
<display-name>MultiKeywordSearch</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>HelloServlet</servlet-name>
<servlet-class>enablingKeyWordSearch.TestServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>HelloServlet</servlet-name>
<url-pattern>/multiKeywordSearch</url-pattern>
</servlet-mapping>
</web-app>
enablingKeyWordSearch.TestServlet.java
文件:
package enablingKeyWordSearch;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.MultipartConfig;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
//@WebServlet(asyncSupported = false, name = "HelloServlet", urlPatterns = {"/hello"})
@WebServlet(name = "HelloServlet", urlPatterns = {"/multiKeywordSearch"})
@MultipartConfig
public class TestServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
resp.setContentType("text/html");
PrintWriter out = resp.getWriter();
out.write("<h2>Hello Servlet One </h2>");
out.close();
}
}
遗憾的是仍然收到 404 错误。
@WebServlet("/multiKeywordSearch")
@MultipartConfig
and then try this.
http://localhost:8080/MultiKeyewordSearch/multiKeywordSearch
尝试更新您的 web.xml
<servlet>
<servlet-name>helloServlet</servlet-name>
<servlet-class>java.enablingKeyWordSearch.TestServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>helloServlet</servlet-name>
<url-pattern>/hello</url-pattern>
</servlet-mapping>
我在 Eclipse 中有一个项目并试图从 Web 浏览器调用一个 servlet。该图显示了我的项目的结构。尽管我在注释中设置了 url
我仍然找不到资源。
这是我的代码:
package java.enablingKeyWordSearch;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet(asyncSupported = false, name = "HelloServlet", urlPatterns = {"/hello"})
public class TestServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
resp.setContentType("text/html");
PrintWriter out = resp.getWriter();
out.write("<h2>Hello Servlet One </h2>");
out.close();
}
}
我试过使用以下方法调用 servlet: http://localhost:8080/MultiKeywordSearch/hello http://localhost:8080/MultiKeywordSearch/src/java/enablingKeyWordSearch/hello
...等等。然而,我收到 HTTP 状态 404 错误。
这是我的 web.xml
文件的内容:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
<display-name>MultiKeywordSearch</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
</web-app>
我正在使用 Apache Tomcat v8.0,如果这有区别的话。
更新:在新的屏幕截图中显示源列表;删除了 java 命名空间
编辑 2.0 web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
<display-name>MultiKeywordSearch</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>HelloServlet</servlet-name>
<servlet-class>enablingKeyWordSearch.TestServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>HelloServlet</servlet-name>
<url-pattern>/multiKeywordSearch</url-pattern>
</servlet-mapping>
</web-app>
enablingKeyWordSearch.TestServlet.java
文件:
package enablingKeyWordSearch;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.MultipartConfig;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
//@WebServlet(asyncSupported = false, name = "HelloServlet", urlPatterns = {"/hello"})
@WebServlet(name = "HelloServlet", urlPatterns = {"/multiKeywordSearch"})
@MultipartConfig
public class TestServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
resp.setContentType("text/html");
PrintWriter out = resp.getWriter();
out.write("<h2>Hello Servlet One </h2>");
out.close();
}
}
遗憾的是仍然收到 404 错误。
@WebServlet("/multiKeywordSearch")
@MultipartConfig
and then try this.
http://localhost:8080/MultiKeyewordSearch/multiKeywordSearch
尝试更新您的 web.xml
<servlet>
<servlet-name>helloServlet</servlet-name>
<servlet-class>java.enablingKeyWordSearch.TestServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>helloServlet</servlet-name>
<url-pattern>/hello</url-pattern>
</servlet-mapping>