基于SpringMVC注解的学生信息的查询
实验内容：
- 创建com.itheima.po.Student类,包含两个属性，stuName(String)，password(String)
- 创建StudentController，并存储Student对象student，设置stuName=”小雪”,password=”123”
- 采用注解的形式
实验步骤：
- 首先创建com.itheima.po.Student类,包含两个属性，stuName(String)，password(String)，并且自动生成相关的Setter/Getter方法和toString方法，同时利用@Component("student")注解生成一个Student的实例。
- 创建StudentController，并利用@Resource(name="student")获取Student实例，并存储到Student对象student，然后利用Setter方法设置stuName=”小雪”,password=”123”。
- 利用@RequestMapping(value="/selectStudent")进行映射，实现StudentController跳转到/web-inf/jsp/seccess.jsp,并且显示用户名和密码。
代码展示：
//Student.java
package com.xzk.po;
import org.springframework.stereotype.Component;
@Component("student")
public class Student {
private String stuName;
private String password;
public String getStuName() {
return stuName;
}
public void setStuName(String stuName) {
this.stuName = stuName;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
@Override
public String toString() {
return "Student [stuName=" + stuName + ", password=" + password + "]";
}
}
//StudentController.java
package com.xzk.controller;
import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import com.xzk.po.Student;
@Controller
public class StudentController {
@Resource(name="student")
private Student student;
@RequestMapping(value="/selectStudent")
public String handelRequest(HttpServletRequest request,
HttpServletResponse response,Model model) throws Exception {
student.setStuName("徐振凯");
student.setPassword("1730090225");
model.addAttribute("stuName",student.getStuName());
model.addAttribute("password", student.getPassword());
return "success";
}
}
//springmvc-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.3.xsd">
<!-- 定义组件扫描器，指定需要扫描的包 -->
<context:component-scan base-package="com.xzk.controller" />
<context:component-scan base-package="com.xzk.po" />
<!-- 定义视图解析器 -->
<bean id="viewResolver" class=
"org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- 设置前缀 -->
<property name="prefix" value="/WEB-INF/jsp/" />
<!-- 设置后缀 -->
<property name="suffix" value=".jsp" />
</bean>
</beans>
//web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id="WebApp_ID" version="3.0">
<!-- 配置前端控制器 -->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc-config.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- 配置编码过滤器 -->
<filter>
<filter-name>CharacterEncodingFilter</filter-name>
<filter-class>
org.springframework.web.filter.CharacterEncodingFilter
</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
//success.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>结果页面</title>
</head>
<body>
${stuName}
${password}
</body>
</html> 本文参与 腾讯云自媒体同步曝光计划，分享自作者个人站点/博客。
原始发表：2020/06/04 ，如有侵权请联系 cloudcommunity@tencent.com 删除
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