springmvc的基本使用

爱被打了一巴掌 2022-08-24 11:10 122阅读 0赞

目前市面上基本就是SSH和SSI的天下好像离开了这些东西开发项目就会觉得不踏实，这几年陆续爆出了struts2的一些漏洞，这些漏洞还挺严重的。如果对struts感到厌倦我建议试试springmvc, 因为它足够让我们惊叹，下面分享下我学习它的心得。

1.下载springmvc的开发包

现在要下载spring貌似比较困难了，那个下载速度简直叫人受不了，这里我推荐使用maven来得到依赖，springmvc所需要的依赖如下

<dependency>  
                <groupId>org.springframework</groupId>  
                <artifactId>spring-core</artifactId>  
                <version>3.0.5.RELEASE</version>  
            </dependency>  
            <dependency>  
                <groupId>org.springframework</groupId>  
                <artifactId>spring-context</artifactId>  
                <version>3.0.5.RELEASE</version>  
            </dependency>  
            <dependency>  
                <groupId>org.springframework</groupId>  
                <artifactId>spring-context-support</artifactId>  
                <version>3.0.5.RELEASE</version>  
            </dependency>  
            <dependency>  
                <groupId>org.springframework</groupId>  
                <artifactId>spring-aop</artifactId>  
                <version>3.0.5.RELEASE</version>  
            </dependency>  
            <dependency>  
                <groupId>org.springframework</groupId>  
                <artifactId>spring-tx</artifactId>  
                <version>3.0.5.RELEASE</version>  
            </dependency>  
            <dependency>  
                <groupId>org.springframework</groupId>  
                <artifactId>spring-asm</artifactId>  
                <version>3.0.5.RELEASE</version>  
            </dependency>  
      
            <dependency>  
                <groupId>org.springframework</groupId>  
                <artifactId>spring-beans</artifactId>  
                <version>3.0.5.RELEASE</version>  
            </dependency>  
              
              
            <dependency>  
                <groupId>org.springframework</groupId>  
                <artifactId>spring-web</artifactId>  
                <version>3.0.5.RELEASE</version>  
            </dependency>  
            <dependency>  
                <groupId>org.springframework</groupId>  
                <artifactId>spring-webmvc</artifactId>  
                <version>3.0.5.RELEASE</version>  
            </dependency>

这个版本也许有点古老，我建议下载版本稍微高一点的

2 配置web.xml

<listener>
    		<listener-class>
    			org.springframework.web.context.ContextLoaderListener
    		</listener-class>
    	</listener>
            <context-param>
    		<param-name>contextConfigLocation</param-name>
    		<param-value>
    			classpath:applicationContext.xml
    		</param-value>
    	</context-param>
    	
    	<servlet>
    		<servlet-name>dispatcherServlet</servlet-name>
    		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    		<init-param>
    			<param-name>contextConfigLocation</param-name>
    			<param-value>classpath*:/spring-servlet.xml</param-value>
    		</init-param>
    	</servlet>
    	<servlet-mapping>
    		<servlet-name>dispatcherServlet</servlet-name>
    		<url-pattern>*.action</url-pattern>
    	</servlet-mapping>

dispatcherservlet的配置算是springmvc的核心

3  spring-servlet.xml文件的相关配置

<?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:p="http://www.springframework.org/schema/p"
    	xmlns:context="http://www.springframework.org/schema/context"
    	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">
    	<bean id="localeResolver"
    		class="org.springframework.web.servlet.i18n.AcceptHeaderLocaleResolver" />
    	<bean id="viewResolver"
    		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    		
    		
    		<property name="prefix" value="/WEB-INF/jsp/" />
    		
    		<property name="suffix" value=".jsp" />
    		
    	</bean>
    	
    	<bean id="urlMapping"
    		class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
    		
    		<property name="interceptors">
    			<list>
    				<bean class="org.lxh.inteceptor.MyInteceptor"></bean>
    			</list>
    		</property>
    		<property name="mappings">
    			<props>
    				<prop key="user*.action">userAction</prop>
    			</props>
    		</property>
    	</bean>
    </beans>

4  action的配置以及action的写法

这一块是springmvc比较重要的部分，这部分类似于servlet，是界面和DAO交互的桥梁。来看下这个action要怎么写

package org.lxh.action;
    
    import org.lxh.info.UserInfo;
    import org.springframework.web.bind.annotation.ModelAttribute;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestParam;
    import org.springframework.web.servlet.ModelAndView;
    
    public class UserController {
    
    	private String regist;
    	private UserInfo userInfo;
    	//success和action里面配置的属性名称应该一致
    	private String success;
    
    	@RequestMapping("/userRegist.action")  //配置action的名称
    	public ModelAndView toRegist() throws Exception {
    		return new ModelAndView(regist, "title", "用户注册");
    	}
    
    	@RequestMapping("/userAdd.action") 
    	public String addUser(@ModelAttribute("userInfo") UserInfo userInfo,@RequestParam("username") String username) throws Exception {
    		//通过@ModelAttribute取得表单参数
    		System.out.println(userInfo.getUsername()+","+userInfo.getPassword());
    		//crud相关操作
    		//重定向
    		return "redirect:/userAddSuccess.action";
    		
    	}
    	@RequestMapping("/userAddSuccess.action") 
    	public ModelAndView toTipPage() {  
    	  
    	    return new ModelAndView(success, "flag", "用户注册成功");
    	    
    	}
    	public String getSuccess() {
    		return success;
    	}
    
    	public void setSuccess(String success) {
    		this.success = success;
    	}
    
    	public UserInfo getUserInfo() {
    		return userInfo;
    	}
    
    	public void setUserInfo(UserInfo userInfo) {
    		this.userInfo = userInfo;
    	}
    
    	public String getRegist() {
    		return regist;
    	}
    
    	public void setRegist(String regist) {
    		this.regist = regist;
    	}
    
    }

看起来是不是挺简单的呢，要注意的就是怎么取得表单的信息以及重定向

action.xml的配置如下所示：

5  先来通过访问action转到注册界面

![SouthEast][]

填写相应信息点击确定之后的界面如下

![SouthEast 1][]

springmvc是不是挺强大的呢！

代码我没有全部贴出来有需要的话点这个链接下载源码

[http://download.csdn.net/detail/smartcodekm/7589165][http_download.csdn.net_detail_smartcodekm_7589165]

[SouthEast]: /images/20220823/b6beebf7ddaa4db98bf6d555ca4dcd67.png
[SouthEast 1]: /images/20220823/67787ef59e8f4ac78e5363c5d286d642.png
[http_download.csdn.net_detail_smartcodekm_7589165]: http://download.csdn.net/detail/smartcodekm/7589165