标签:fnr vfp hwm 新建 引入 hal oca ksh esx
一.SpringMVC概述
package com.po; import java.io.Serializable; public class Users implements Serializable { private String uname;// 用户名 private String passwd;// 密码 public String getUname() { return uname; } public void setUname(String uname) { this.uname = uname; } public String getPasswd() { return passwd; } public void setPasswd(String passwd) { this.passwd = passwd; } }
然后在com.biz包中新建IUsersBiz接口和实现类,代码如下:
package com.biz; import com.po.Users; public interface IUsersBiz { /** * 检查用户 * @param us * @return */ public boolean check(Users us); }
package com.biz; import org.springframework.stereotype.Service; import com.po.Users; @Service("UsersBiz") public class UsersBiz implements IUsersBiz { /** * 检查用户名和密码是否合法,合法返回true,否则返回false。 */ @Override public boolean check(Users us) { if (us != null) { if (us.getUname() != null || us.getUname().trim().equals("") && us.getPasswd() != null || us.getPasswd().trim().equals("")) { return true; } } return false; } }
再然后在com.action中新建UsersAction类,代码如下:
package com.action; import javax.annotation.Resource; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView; import com.biz.IUsersBiz; import com.po.Users; @Controller public class UsersAction { @Resource(name="UsersBiz") private IUsersBiz iuBiz; public IUsersBiz getIuBiz() { return iuBiz; } public void setIuBiz(IUsersBiz iuBiz) { this.iuBiz = iuBiz; } /******SpringMvc的执行方法*******/ @RequestMapping(value="check_Users.do") public ModelAndView check(HttpServletRequest request, HttpServletResponse response, Users us) { ModelAndView mv = new ModelAndView(); boolean flag = iuBiz.check(us); if(flag) { //将us放入request作用域中 request.setAttribute("us", us); //跳转页面 mv.setViewName("loginok.jsp"); } else { mv.setViewName("fail.jsp"); } return mv; } }
代码中加黑的:@RequestMapping作说明:
@RequestMapping
RequestMapping是一个用来处理请求地址映射的注解,可用于类或方法上。用于类上,表示类中的所有响应请求的方法都是以该地址作为父路径。
RequestMapping注解有六个属性,下面我们把她分成三类进行说明。
value: 指定请求的实际地址,指定的地址可以是URI Template 模式(后面将会说明);
method: 指定请求的method类型, GET、POST、PUT、DELETE等;
consumes: 指定处理请求的提交内容类型(Content-Type),例如application/json, text/html;
produces: 指定返回的内容类型,仅当request请求头中的(Accept)类型中包含该指定类型才返回;
params: 指定request中必须包含某些参数值是,才让该方法处理。
headers: 指定request中必须包含某些指定的header值,才能让该方法处理请求。
ModelAndView表示:
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-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/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd " default-autowire="byName" > <!-- 织入注解通知配置 --> <context:annotation-config></context:annotation-config> <!-- 注入要扫描的组件包 --> <context:component-scan base-package="com.biz"></context:component-scan> <context:component-scan base-package="com.action"></context:component-scan> </beans>
第五步web.xml配置:
关键配置DispatcherServlet、CharacterEncodingFilter
<?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" id="WebApp_ID" version="2.5"> <display-name>prjSpringMVC</display-name> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> <!-- Spring的启动配置 --> <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> <filter> <filter-name>GBK</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>GBK</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>springmvc</param-name> <param-value>/WEB-INF/springmvc-servlet.xml</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping> </web-app>
第六步:login.jsp\loginok.jsp\fail.jsp
1.login.jsp
<body> 用户登录<br> <form action="check_Users.do" method="post"> 账号:<input type="text" name="uname"/><br> 密码:<input type="password" name="passwd"/><br> <input type="submit" value="确定"/> </form> </body>
2.loginok.jsp
<body> 用户名:${us.uname }<br/> 密码:${us.passwd } </body>
3.fail.jsp
<body> 登录失败 <br> </body>
好啦看看效果:
最后说明一下,这个例子虽然很简单,但是其中的springmvc配置很重要!!!!
标签:fnr vfp hwm 新建 引入 hal oca ksh esx
原文地址:http://www.cnblogs.com/julinhuitianxia/p/6828207.html