spring mvc +freemarker不错的mvc搭配-优快云博客

spring mvc现在如火如荼，闲来无事也摆弄一番。

总体来说，spring mvc还是挺不错的，注解方式的配置，RESTful的风格，让人眼睛一亮，还有不错的性能。

废话不说，直接写上我的配置吧！

要用spring mvc 需要下载spring的包，还有freemarker。

web.xml配置

<servlet>
		<servlet-name>springmvc</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<load-on-startup>2</load-on-startup>
	</servlet>
	<servlet-mapping>
		<servlet-name>springmvc</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>

spring mvc 主要通过DispatcherServlet做分发。

上面的servlet名字叫springmvc 所以在WEB-INF下面新建一个springmvc-servlet.xml文件

springmvc-servlet.xml配置

<?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:aop="http://www.springframework.org/schema/aop" xmlns:p="http://www.springframework.org/schema/p"
	xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jdbc="http://www.springframework.org/schema/jdbc"

	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/tx  
            http://www.springframework.org/schema/tx/spring-tx-3.0.xsd  
            http://www.springframework.org/schema/jdbc  
            http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd">

	<!--注解说明 -->
	<context:annotation-config />
	<!-- 把标记了@Controller注解的类转换为bean -->
	<context:component-scan base-package="com.lantii.action" />
	<!-- 启动Spring MVC的注解功能，完成请求和注解POJO的映射 请求映射 -->
	<bean
		class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />

	<!-- freemarker的配置 -->
	<bean id="freemarkerConfigurer"
		class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer">
		<property name="templateLoaderPath" value="/WEB-INF/view/" />
		<property name="defaultEncoding" value="GBK" />
		<property name="freemarkerSettings">
			<props>
				<prop key="template_update_delay">10</prop>
				<prop key="locale">zh_CN</prop>
				<prop key="datetime_format">yyyy-MM-dd HH:mm:ss</prop>
				<prop key="date_format">yyyy-MM-dd</prop>
				<prop key="number_format">#.##</prop>
			</props>
		</property>
	</bean>
	<!-- FreeMarker视图解析 如返回userinfo。。在这里配置后缀名ftl和视图解析器。。 -->
	<bean id="viewResolver"
		class="org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver">
		<property name="viewClass"
			value="org.springframework.web.servlet.view.freemarker.FreeMarkerView" />
		<property name="suffix" value=".ftl" />
		<property name="contentType" value="text/html;charset=GBK" />
		<property name="exposeRequestAttributes" value="true" />
		<property name="exposeSessionAttributes" value="true" />
		<property name="exposeSpringMacroHelpers" value="true" />
	</bean>

	<bean id="messageSource"
		class="org.springframework.context.support.ResourceBundleMessageSource"
		p:basename="i18n/messages" />
</beans>

配置完成，我们来写控制层代码：

MessageController.java

package com.lantii.action;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

@Controller
@RequestMapping("/message")
// url映射的名称
public class MessageController {

	@RequestMapping(value = "/{msg}", method = RequestMethod.GET)
	public String showMessage(@PathVariable String msg,
			HttpServletRequest request, HttpServletResponse response) {
		// TODO 处理请求
		request.setAttribute("message", msg); // 设置返回消息
		return "message"; // 设置返回页面，这里对应 /WEB-INF/view 目录下的 message.ftl 文件
	}

	@RequestMapping(value = "/add")
	public String addMessage(HttpServletRequest request, HttpServletResponse response) {
		request.setAttribute("message", "message is added");
		return "message";

	}
}

UserController

package com.lantii.action;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import com.lantii.business.user.User;

@Controller
@RequestMapping("/user")
public class UserController {
	@RequestMapping(value = "/login")
	public String test(HttpServletRequest request,
			HttpServletResponse response, User userinfo) { // 非常方便可以直接在方法里面放入对象
		if (userinfo.getUsername().equals("lantii")
				&& userinfo.getPassword().equals("ok")) {
			request.setAttribute("userinfo", userinfo);
			return "users/loginok"; // 判断，将跳转不同的页面
		} else {
			return "users/loginerr"; // 判断，将跳转不同的页面
		}
	}
}

User.java

package com.lantii.business.user;

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;
	}
	
}

返回页message.ftl

<html>
<body>
	<p>This is my message:<br> ${message}</p>
</body>
</html>

users下loginok.ftl

<html>
<body>
	hi, <b>${userinfo.username}</b>

</body>
</html>

接下来写一个前台调用的测试jsp

<%@ page language="java" contentType="text/html; charset=GBK"
	pageEncoding="GBK"%>
<!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=GBK">
<title>主页</title>
</head>
<body>
	<form METHOD=POST ACTION="user/login">
		用户名：<input TYPE="text" NAME="username" value="lantii"><br>
		密 码：<input TYPE="text" NAME="password" value="ok"><br> <input
			TYPE="submit">
	</form>
	<br>
	<a href="message/add" target="_blank">add</a>
	<br>
	<a href="message/哈哈哈" target="_blank">see：哈哈哈</a>
</body>
</html>

接下来就可用了。