之前項目中mvc架構一直用struts2，是以我也就按照struts2 的思維來思考
頁面logininput.jsp：
<?xml version="1.0" encoding="utf-8" ?>
<%@ page language="java" contenttype="text/html; charset=utf-8"
pageencoding="utf-8"%>
<%
string path = request.getcontextpath();
string basepath = request.getscheme() + "://"
+ request.getservername() + ":" + request.getserverport()
+ path + "/";
%>
<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>insert title here</title>
</head>
<body>
<center>
<font color="red" >${message }</font>
<form action="<%=path %>/user/loginverify">
<table>
<tr>
<td>身份證:</td>
<td> <input type="text" name="user.identity" /> </td>
</tr>
<td>使用者編号:</td>
<td><input type="text" name="userstudentid" /> </td>
<td colspan="2">
<input type="submit" value="login"/>
</td>
</table>
</form>
</center>
</body>
</html>
控制器logincontroller 中登入的方法：
/***
* 校驗登入使用者
*
* @param session
* @param user
* @return
* @throws unsupportedencodingexception
* @throws exception
*/
@requestmapping(value = "/loginverify")
public string login(user user, httpsession session,
map<string, object> map,model model) throws unsupportedencodingexception,
exception {
user user2 = null;
if (user.getidentity() == null) {
map.put("message", "請輸入身份證");
return "logininput";
}
map.put("identity", user.getidentity());
model.addattribute("identity", user.getidentity());
system.out.println("identity:"+session.getattribute("identity"));
user2 = this.userdao.getbyidentityandstudentid(new user(user.getidentity(),
user.getstudentid()));
system.out.println("user2:" + user2);
if (user2 != null) {
return "welcome";
} else {
map.put("message", "身份證和使用者編号有誤，請重新登入");
}
我認為頁面表單中name為user.identity 和user.studentid的元素會自動注入到上述方法的變量user user 中，結果沒有！！！？
實體類user：
package com.springmvc.entity;
import javax.persistence.entity;
import javax.persistence.generatedvalue;
import javax.persistence.id;
* father class
* @author huangwei
*
*/
@entity
public class user {
private int id;
/**
* 身份證
private string identity;
/***
* 使用者編号
private string studentid;
private string username;
public user() {
super();
public user(string identity, string studentid) {
this.identity = identity;
this.studentid = studentid;
@id
@generatedvalue
public int getid() {
return id;
public void setid(int id) {
this.id = id;
public string getidentity() {
return identity;
public void setidentity(string identity) {
public string getstudentid() {
return studentid;
public void setstudentid(string studentid) {
public string getusername() {
return username;
public void setusername(string username) {
this.username = username;
}
原來，spring mvc 跟struts2的注入方式不一樣！！
後來我把頁面中的name屬性改為identity 和studentid 就好了：
<tr>
<td>身份證:</td>
<td> <input type="text" name="identity" /> </td>
</tr>
<td>使用者編号:</td>
<td><input type="text" name="studentid" /> </td>
這就是spring mvc與struts2 ioc不同的地方！
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