首先導入所需的jar包，項目目錄結構如下：
之後需要配置一下web.xml文件，內容如下：
<?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_2_5.xsd" version="2.5">
<servlet>
<servlet-name>springDispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springDispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
然後配置applicationContext.xml:
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<!-- 配置自動掃描的包 -->
<context:component-scan base-package="com.sprmvc.po"></context:component-scan>
<!-- 配置視圖解析器 將HelloWorldController中的返回值解析為實際的物理視圖 -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- prefix為前綴,suffix為後綴 -->
<property name="prefix" value="/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
</beans>
下面開始建立實體類User.java:
package com.sprmvc.po;
public class User {
private String userName;
private String password;
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
然後是控制層代碼：
package com.sprmvc.po;
import javax.servlet.http.HttpServletRequest;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
@Controller
public class HelloWorldController {
@RequestMapping(value="/hello",method = RequestMethod.GET)
public String printHelloWorld(HttpServletRequest request,User user) {
request.setAttribute("userName", user.getUserName());
request.setAttribute("password", user.getPassword());
return "hello";
}
}
這裡的value即訪問路徑，而return的"hello"通過applicationContext.xml中配置的視圖解析器會返回到hello.jsp中
接下來我們建立兩個.jsp頁面，首先是index.jsp:
<body>
<form method="get" action="hello">
用戶名：<input type="text" name="userName">
密碼：<input type="password" name="password"><br>
<input type="submit" value="提交">
</form>
</body>
這裡的method和action分別與控制層中的method和value的值相對應，即HelloWorldController.java中的第11行。
然後是hello.jsp:
1 <body>
2 <h1>操作成功了</h1>
3 您的用戶名為：${userName}<br>
4 您的密碼為：${password }
5 </body>
這樣只需要將項目加載到tomcat下就可以進行訪問了，趕快試試吧。
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