spring MVC一个简单的demo

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spring MVC一个简单的demo

以下是本人对spring MVC的学习，如果有不正确的地方，请各位多多指教。

不多啰嗦了，直接来代码示例。

环境： tomcat 7.0, jdk 1.6.0_25, spring 3.2.0

首先，我一般会先创建一个tomcat工程，这个是根据个人喜好来做。

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" 
			xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
			xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
			version="3.0" metadata-complete="true">
			
	<welcome-file-list>
		<welcome-file>index.htm</welcome-file>
	</welcome-file-list>
	
</web-app>

创建index.htm

<!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>Insert title here</title>
</head>
<body>
	<h1>test!!!!</h1>
</body>
</html>

配置tomcat的server.xml

<Context path="/springMVC" docBase="你自己的工程路径" debug="0" reloadable="true">
</Context>

测试打开ie，输入http://localhost:8080/springMVC/ ，出现下面画面，证明请求成功。

编辑web.xml,加入servlet

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" 
			xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
			xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
			version="3.0" metadata-complete="true">
			
	<servlet>
		<servlet-name>springMVC</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<load-on-startup>1</load-on-startup>
	</servlet>
	
	<servlet-mapping>
		<servlet-name>springMVC</servlet-name>
		<url-pattern>*.html</url-pattern>
	</servlet-mapping>
	
	<welcome-file-list>
		<welcome-file>index.htm</welcome-file>
	</welcome-file-list>
	
</web-app>

配置结束后，这里面有个契约，上面的servlet的名字是springMVC，这样会默认在工程的WEB-INF文件夹下面找springMVC-servlet.xml文件，所以我们要创建springMVC-servlet.xml。当然也自己指定的文件，网上有很清晰的说明，这里就不再说了，如果有不清楚地，也可以留言给我。

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
		xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
		xmlns:context="http://www.springframework.org/schema/context"
		xmlns:util="http://www.springframework.org/schema/util"
		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 
							http://www.springframework.org/schema/util
							http://www.springframework.org/schema/util/spring-util-2.0.xsd ">
							
	<!-- annotation class's package -->
	<context:component-scan base-package="app"/>
	
	<!-- complete request and annotation mapping -->
	<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"/>
	
	<!-- analyze view path -->
	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/WEB-INF/jsp/"/>
		<property name="suffix" value=".jsp"/>
		<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"></property>
	</bean>

</beans>

以上配置基本就结束了。现在我们开始创建action和form，来测试下。

package app.login.action;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import app.login.form.LoginForm;

@Controller
public class LoginAction {

	@RequestMapping("/index")
	public String index() {
		return "login/login";
	}

	@RequestMapping("/login")
	public ModelAndView login(LoginForm form) {
		ModelAndView mav = new ModelAndView();
		mav.addObject("form", form);
		mav.setViewName("login/login_success_test");
		return mav;
	}
}

package app.login.form;

public class LoginForm {

	private String loginID;

	private String password;

	public String getLoginID() {
		return loginID;
	}

	public void setLoginID(String loginID) {
		this.loginID = loginID;
	}

	public String getPassword() {
		return password;
	}

	public void setPassword(String password) {
		this.password = password;
	}
}

创建结束后，我们修改index.htm

<!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">
<meta http-equiv="refresh" content="0;url=index.html">
<title>Insert title here</title>
</head>
</html>

创建login.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>Insert title here</title>
<script type="text/javascript">
	function doSubmit() {
		document.getElementById("form").action = "login.html";
		document.getElementById("form").submit();
	}
</script>
</head>
<body>
<form id="form" method="post">
	loginID:<input type="text" name="loginID" id="loginID" size="10"><BR>
	password:<input type="password" name="password" id="password" size="10"><BR>
	<input type="button" value="login" onclick="doSubmit();">
</form>
</body>
</html>

创建login_success_test.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>Insert title here</title>
</head>
<body>
<form>
	<h1>Hello, ${form.loginID}, welcome to spring MVC.</h1>
</form>
</body>
</html>