SpringMVC学习笔记（五）：参数传递

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方式一：直接设置方法的参数名
方式二：通过HttpServletRequest获取
方式三：通过对象,表单的name属性的值value必须与对象的属性一致
controller

package com.lin.controller;import java.text.SimpleDateFormat;import java.util.Date;import javax.servlet.http.HttpServletRequest;import org.springframework.beans.propertyeditors.CustomDateEditor;import org.springframework.stereotype.Controller;import org.springframework.web.bind.ServletRequestDataBinder;import org.springframework.web.bind.annotation.InitBinder;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.servlet.ModelAndView;import com.lin.user.UserInfo;@Controller@RequestMapping("/user")public class UserServlet {    //参数获取方式一：直接设置方法的参数名，参数名与传来的参数name一样    @RequestMapping("/list1.do")    public ModelAndView list1(String userName, Integer password){        System.out.println(userName+password);        ModelAndView mav = new ModelAndView("index");        mav.addObject("userName", userName);        mav.addObject("password", password);        return mav;    }    //参数获取方式二：通过HttpServletRequest获取    @RequestMapping(value="/list2.do")    public ModelAndView list2(HttpServletRequest req){        ModelAndView mav = new ModelAndView("index");        mav.addObject("userName", req.getParameter("userName"));        mav.addObject("password", req.getParameter("password"));        return mav;    }    //参数获取方式三：通过对象,表单的name属性的值value必须与对象的属性一致    @RequestMapping("/list3.do")    public ModelAndView list3(UserInfo user){        System.out.println(user);        ModelAndView mav = new ModelAndView("index");        mav.addObject("user", user);        return mav;    }    //注意参数Date类型导入的包为import java.util.Date;而不是java.sql.Date    @RequestMapping("/date.do")    public ModelAndView date(Date userTime){        System.out.println(userTime);        ModelAndView mav = new ModelAndView("index");        mav.addObject("userTime", userTime);        return mav;    }    /**     * 时间属性编辑器     * @param bin     */    @InitBinder    public void initBinder(ServletRequestDataBinder bin){        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-mm-dd hh:mm:ss");        CustomDateEditor cust = new CustomDateEditor(sdf, true);        bin.registerCustomEditor(Date.class, cust);    }}

UserInfo对象，必须生成set与get方法

package com.lin.user;import java.util.Arrays;import java.util.Date;public class UserInfo {    private Integer userId;    private String userName;    private String userSex;    private String[] userHabit;    private Date userTime;    public Date getUserTime() {        return userTime;    }    public void setUserTime(Date userTime) {        this.userTime = userTime;    }    public String[] getUserHabit() {        return userHabit;    }    public void setUserHabit(String[] userHabit) {        this.userHabit = userHabit;    }    public Integer getUserId() {        return userId;    }    public void setUserId(Integer userId) {        this.userId = userId;    }    public String getUserName() {        return userName;    }    public void setUserName(String userName) {        this.userName = userName;    }    public String getUserSex() {        return userSex;    }    public void setUserSex(String userSex) {        this.userSex = userSex;    }    @Override    public String toString() {        return "UserInfo [userId=" + userId + ", userName=" + userName                + ", userSex=" + userSex + ", userHabit="                + Arrays.toString(userHabit) + ", userTime=" + userTime + "]";    }}

前端index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>  <head>    <base href="<%=basePath%>">    <title>My JSP 'index.jsp' starting page</title>    <meta http-equiv="pragma" content="no-cache">    <meta http-equiv="cache-control" content="no-cache">    <meta http-equiv="expires" content="0">        <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">    <meta http-equiv="description" content="This is my page">    <!--    <link rel="stylesheet" type="text/css" href="styles.css">    -->  </head>  <body>     <form action="user/list1.do" method="POST">        userName:<input type="text" name="userName"/></br>        password:<input type="text" name="password"/></br>        <input type="submit" value="方式1"/>     </form>      <form action="user/list2.do" method="POST">        userName:<input type="text" name="userName"/></br>        password:<input type="text" name="password"/></br>        <input type="submit" value="方式2"/>     </form>     <h1>userName:${userName }&nbsp;password:${password}</h1>     <form action="user/list3.do" method="POST">        userId:<input type="text" name="userId"/><br>        userName:<input type="text" name="userName"/><br>        userSex:<input type="text" name="userSex"/><br>        userTime：<input type="text" name="userTime"><br>        userHabit:<input type="checkbox" name="userHabit" value="eat"/>eat            <input type="checkbox" name="userHabit" value="cook"/>cook            <input type="checkbox" name="userHabit" value="sleep"/>sleep<br>        <input type="submit" value="方式3"/>     </form>       <h2>userId:${user.userId }&nbsp;userName:${user.userName }      &nbsp;userSex:${user.userSex }　&nbsp;userHabit:      <c:forEach items="${user.userHabit}"  var="val">        <b>${val}</b>      </c:forEach>      </h2>      <h1>${user.userTime }</h1>      <form action="user/date.do" method="post">          时间：<input type="text" name="userTime">      <input type="submit" value="date"/>      </form>      <h1>${userTime }</h1>  </body></html>

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