回顾Servlet
1.新建一个Maven工程当作父工程,导入pom依赖!
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.1.9.RELEASE</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.2</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
2.建立一个Model:springmvc-01-servlet,添加Web app支持(在里边添加框架支持)!
3.子项目导入servlet和jsp的jar依赖
<dependencies>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.2</version>
</dependency>
</dependencies>
4.编写一个Servlet类,用来处理用户请求
5.编写test.jsp,在WEB-INF目录下新建一个jsp文件夹,新建test.jsp
6.在web.xml中注册Servlet
7.配置Tomcat,并启动测试
localhost://8080/hello?method=add
localhost://8080/hello?method=delete
MVC框架要做哪些事情?
1.将url映射到java类或java类的方法
2.封装用户提交的数据
3.处理请求,调用相关业务处理,封装响应数据
4.将响应的数据进行渲染