spring与servlet整合实例
时间: 2023-06-25 21:06:06 浏览: 49
以下是一个简单的Spring与Servlet整合的实例:
1. 首先,我们需要创建一个Servlet类,比如说HelloServlet:
```java
@WebServlet("/hello")
public class HelloServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String message = "Hello, World!";
request.setAttribute("message", message);
request.getRequestDispatcher("/WEB-INF/views/hello.jsp").forward(request, response);
}
}
```
2. 接下来,我们需要创建一个Spring配置文件,比如说spring-config.xml,定义一个bean,该bean会在Servlet初始化时加载:
```xml
<bean id="message" class="java.lang.String">
<constructor-arg value="Hello, Spring!"/>
</bean>
```
3. 接着,我们需要在web.xml中注册Servlet和Spring监听器:
```xml
<servlet>
<servlet-name>HelloServlet</servlet-name>
<servlet-class>com.example.HelloServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>HelloServlet</servlet-name>
<url-pattern>/hello</url-pattern>
</servlet-mapping>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring-config.xml</param-value>
</context-param>
```
4. 最后,我们需要在JSP视图中获取Spring bean的值:
```html
<html>
<head><title>Hello, World!</title></head>
<body>
<h1>${message}</h1>
</body>
</html>
```
这样,当我们访问/hello时,Servlet会将消息传递给JSP,并在JSP中显示Spring bean的值。