菜鸟学习Spring——SpringMVC注解版前台向后台传值的两种方式.doc

菜鸟学习SpringSpringMVC注解版前台向后台传值的两种方式 分类： 菜鸟学习SSH2015-01-21 11:3410028人阅读评论(1)收藏举报一、概述。在很多企业的开法中常常用到SpringMVC+Spring+Hibernate（mybatis）这样的架构，SpringMVC相当于Struts是页面到Contorller直接的交互的框架也是界面把信息传输到Contorller层的一种架构，通过这个架构可以让我们把页面和Contorller层解耦，使得开发人员的分工更加明确。二、代码演示。1、首先配置SpringMVC环境。1.1导入jar。值得注意的是红色标记的commons-logging这个jar包一定得引入进去不然会报错。1.2、xml配置文件。web.xmlhtml view plaincopyprint?1. 2. 3. 4. springMVC 5. org.springframework.web.servlet.DispatcherServlet 6. 1 7. 8. 9. springMVC 10. *.spring 11. 12. 13. index.jsp 14. 15. springMVCorg.springframework.web.servlet.DispatcherServlet1springMVC*.springindex.jspspringMVC-servlet.xmlhtml view plaincopyprint?1. 2. 10. 11. 2、前台界面代码。login.jspplain view plaincopyprint?1. 3. 4. 5. 6. 7. Insert title here 8. 9. 10. 11. username: 12. 13. password: 14. 15. 16. 17. 18. Insert title hereusername:password:No.jsphtml view plaincopyprint?1. 3. 4. 5. 6. 7. Insert title here 8. 9. 10. No! 11. 12. Insert title hereNo!Ok.jsphtml view plaincopyprint?1. 3. 4. 5. 6. 7. Insert title here 8. 9. 10. OK！ welcome:$username 11. 12. Insert title here OK！ welcome:$username3、Contorller层接收前台的两种方式。方式一：利用RequestParam这个注解java view plaincopyprint?1. package com.gaowei.controller; 2.3. import org.springframework.stereotype.Controller; 4. import org.springframework.ui.Model; 5. import org.springframework.web.bind.annotation.RequestMapping; 6. import org.springframework.web.bind.annotation.RequestParam; 7.8. Controller 9. public class Login 10.11. /方式一 12. RequestMapping(/login) 13. public String login(RequestParam(username) String username, 14. RequestParam(password) String password,Model model) 15. if (username.equals(password) 16. 17. model.addAttribute(username, username); 18. return ok.jsp; 19. else 20. return no.jsp; 21. 22. 23. package com.gaowei.controller;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestParam;Controllerpublic class Login /方式一RequestMapping(/login)public String login(RequestParam(username) String username,RequestParam(password) String password,Model model)if (username.equals(password) model.addAttribute(username, username);return ok.jsp; else return no.jsp;方式二：java view plaincopyprint?1. package com.gaowei.controller; 2.3. import org.springframework.stereotype.Controller; 4. import org.springframework.ui.Model; 5. import org.springframework.web.bind.annotation.RequestMapping; 6. import org.springframework.web.bind.annotation.RequestParam; 7.8. Controller 9. public class Login 10. RequestMapping(/login) 11. public String login(String username,String password,Model model) 12. if (username.equals(password) 13. 14. model.addAttribute(username, username); 15. return ok.jsp; 16. else 17. return no.jsp; 18. 19. 20.21. package com.gaowei.controller;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestParam;Controllerpublic class Login RequestMapping(/login)public String login(String username,String password,Model model)if (username.equals(password) model.a