本文主要是介绍7.26--SSH学习之SpringMVC控制器注释,希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!
第一类
配置文件:
<!-- 指定自动扫描com.su.controller包下的控制器类 --><context:component-scan base-package="com.su.controller"></context:component-scan><!-- 自动加载注解适配器和映射器 --><mvc:annotation-driven></mvc:annotation-driven><!-- 视图解析器 --><bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"><!-- 配置jsp路径的前缀<property name="prefix" value="/result/" />--><!-- 配置jsp路径的后缀<property name="suffix" value=".jsp" />--></bean>
控制器类:包含三种方法
@Controller //此注释代表本类是控制器
//@RequestMapping(name="stu") //相当于action中的namespace,即访问时加的前缀
public class StudentController {@RequestMapping("addstu.action")public ModelAndView addStudent() throws Exception{System.out.println("in StudentController method addStudent()");ModelAndView mav = new ModelAndView();mav.addObject("stuName", "大海");//转发
// mav.setViewName("stusuccess.jsp");//重定向mav.setViewName("redirect:stusuccess.jsp");return mav; }@RequestMapping("updatestu.action")public String updateStudent() throws Exception{System.out.println("in StudentController method updateStudent()");//转发return "stusuccess.jsp";//重定向
// return "redirect:stusuccess";}@RequestMapping("deletestu.action")public void deleteStudent(HttpServletRequest request,HttpServletResponse response) throws Exception{System.out.println("in StudentController method deleteStudent()");request.getSession().setAttribute("stuName", "小倩");//转发
// request.getRequestDispatcher("stusuccess.jsp").forward(request, response);//重定向response.sendRedirect("stusuccess.jsp");}}
提交表单访问控制器:
<body><form action="addstu.action" method="post">学生名:<input type="text" name="stuName" value="轩辕"><br>密码:<input type="password" name="stuPwd" value="1111"><br><input type="submit" value="新增"></form></body>
第二类
在控制器类获取通过表单提交属性的值,有三种方式:
1. 直接在方法上传参
@RequestMapping("addstu.action")public ModelAndView addStudent(String stuName,String stuPwd,String gender,String city,String personInfo,String[] hobby,Double height) throws Exception{System.out.println("in StudentController method addStudent()");System.out.println(stuName);System.out.println(stuPwd);System.out.println(gender);System.out.println(city);System.out.println(personInfo);for(String s : hobby){System.out.println(s);}System.out.println(height);ModelAndView mav = new ModelAndView();mav.addObject("stuName", stuName);//转发mav.setViewName("stusuccess.jsp");//重定向
// mav.setViewName("redirect:stusuccess.jsp");return mav; }
2. 在方法上传对象
@RequestMapping("updatestu.action")public String updateStudent(Student stu,Classes classes,HttpSession session) throws Exception{System.out.println("in StudentController method updateStudent()");System.out.println(stu.getStuName());System.out.println(stu.getCity());System.out.println(stu.getGender());System.out.println(stu.getPersonInfo());System.out.println(stu.getStuPwd());System.out.println(stu.getHeight());for(String s : stu.getHobby()){System.out.println(s);}System.out.println(classes.getClassesId());System.out.println(classes.getClassesName());session.setAttribute("stu", stu);//转发
// return "stusuccess.jsp";//重定向return "redirect:stusuccess.jsp"; }
3. 在方法上传对象(此对象包含两个子类)
@RequestMapping("deletestu.action")public void deleteStudent(HttpServletRequest request,HttpServletResponse response,GenericClass gc) throws Exception{System.out.println("in StudentController method deleteStudent()");request.getSession().setAttribute("stuName", "小倩");System.out.println(gc.getStudent().getStuName());//获取Classes类的属性System.out.println(gc.getClasses().getClassesId());//获取Student类中Classes类对象的属性System.out.println(gc.getStudent().getClasses().getClassesName());//转发request.getRequestDispatcher("stusuccess.jsp").forward(request, response);//重定向
// response.sendRedirect("stusuccess.jsp");}
4. 前两种方法使用下面的表单,注:属性名上不写对象名
<body><form action="updatestu.action" method="post">学生名:<input type="text" name="stuName" value="轩辕"><br>密码:<input type="password" name="stuPwd" value="1111"><br>性别:<input type="radio" name="gender" value="男">男 <input type="radio" name="gender" value="女">女 <br>所在城市:<select name="city" id="city"><option value="郑州">郑州</option><option value="开封">开封</option><option value="洛阳">洛阳</option></select><br>个人说明:<textarea rows="6" cols="40" name="personInfo" id="personInfo"></textarea><br>爱好:<input type="checkbox" name="hobby" value="电影">电影 <input type="checkbox" name="hobby" value="音乐">音乐 <input type="checkbox" name="hobby" value="吃">吃 <input type="checkbox" name="hobby" value="睡">睡 <input type="checkbox" name="hobby" value="摄影">摄影 <br>身高:<input type="text" name="height" id="height">cm<br>所在班级:<select name="classesId" id="classesId"><option value="1">一班</option><option value="2">二班</option><option value="3">三班</option></select><br>班级名:<input type="text" name="classesName" ><input type="submit" value="新增"></form></body>
5. 第三种方法使用下面的表单,注:属性名上写对象名,另外一个类中包含另一类的对象时,要获取此属性的值时,需要为属性写,第一级类.第二级类.属性名
<body><form action="deletestu.action" method="post">学生名:<input type="text" name="student.stuName" value="轩辕"><br>密码:<input type="password" name="student.stuPwd" value="1111"><br>性别:<input type="radio" name="student.gender" value="男">男 <input type="radio" name="student.gender" value="女">女 <br>所在城市:<select name="student.city" id="city"><option value="郑州">郑州</option><option value="开封">开封</option><option value="洛阳">洛阳</option></select><br>个人说明:<textarea rows="6" cols="40" name="student.personInfo" id="personInfo"></textarea><br>爱好:<input type="checkbox" name="student.hobby" value="电影">电影 <input type="checkbox" name="student.hobby" value="音乐">音乐 <input type="checkbox" name="student.hobby" value="吃">吃 <input type="checkbox" name="student.hobby" value="睡">睡 <input type="checkbox" name="student.hobby" value="摄影">摄影 <br>身高:<input type="text" name="student.height" id="height">cm<br>所在班级:<select name="classes.classesId" id="classesId"><option value="1">一班</option><option value="2">二班</option><option value="3">三班</option></select><br>班级名:<input type="text" name="student.classes.classesName" ><input type="submit" value="新增"></form></body>
Author:su1573
这篇关于7.26--SSH学习之SpringMVC控制器注释的文章就介绍到这儿,希望我们推荐的文章对编程师们有所帮助!