Spring MVC+MyBatis+MySql 具体实践
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本文演示常见的用户登录和数据库增删查改操作
SpringMVC 框架
- @Controller // 用来标注当前类是springmvc的控制层的类
- @RequestMapping("/test") // RequestMapping表示 该控制器的唯一标识或者命名空间
- public class TestController {
- /**
- * 方法的返回值是ModelAndView中的
- */
- @RequestMapping("/hello.do") // 用来访问控制层的方法的注解
- public String hello() {
- System.out.println("springmvc annotation... ");
- return "jsp1/index";
- }
- //*****
- }
在本例中,项目部署名为mvc,tomcat url为 http://localhost,所以实际为:http://localhos/mvc
在本例中,因为有命名空间 /test,所以请求hello方法地址为:http://localhost/mvc/test/hello.do
输出:springmvc annotation...
注解形式的参数接收
1可以直接定义在参数的列表,通过该请求可以传递参数
url:http://localhost/mvc/test/toPerson.do?name=zhangsan
- /**
- * HttpServletRequest可以直接定义在参数的列表,
- *
- */
- @RequestMapping("/toPerson.do")
- public String toPerson(HttpServletRequest request) {
- String result = request.getParameter("name");
- System.out.println(result);
- return "jsp1/index";
- }
可以从HttpServletRequest 取出“name”属性,然后进行操作!如上,可以取出 “name=zhangsan”
输出:zhangsan
2. 在参数列表上直接定义要接收的参数名称,只要参数名称能匹配的上就能接收所传过来的数据, 可以自动转换成参数列表里面的类型,注意的是值与类型之间是可以转换的
2.1传递多种不同类型的参数:
url:http://localhost/mvc/test/toPerson1.do?name=zhangsan&age=14&address=china&birthday=2000-2-11
- /**
- * 传递的参数的名字必须要与实体类的属性set方法后面的字符串匹配的上才能接收到参数,首字符的大小写不区分
- * 请求中传的参数只要是能和参数列表里面的变量名或者实体里面的set后面的字符串匹配的上就能接收到 a
- *
- */
- @RequestMapping("/toPerson1.do")
- public String toPerson1(String name, Integer age, String address,
- Date birthday) {
- System.out.println(name + " " + age + " " + address + " " + birthday);
- return "jsp1/index";
- }
- /**
- * 注册时间类型的属性编辑器,将String转化为Date
- */
- @InitBinder
- public void initBinder(ServletRequestDataBinder binder) {
- binder.registerCustomEditor(Date.class, new CustomDateEditor(
- new SimpleDateFormat("yyyy-MM-dd"), true));
- }
输出:zhangsan 14 china Fri Feb 11 00:00:00 CST 2000
2.2传递数组:
url:http://localhost/mvc/test/toPerson2.do?name=tom&name=jack
- /**
- * 对数组的接收,定义为同名即可
- */
- @RequestMapping("/toPerson2.do")
- public String toPerson2(String[] name) {
- for (String result : name) {
- System.out.println(result);
- }
- return "jsp1/index";
- }
输出:tom jack
2.3传递自定义对象(可多个):
url:http://localhost/mvc/test/toPerson3.do?name=zhangsan&age=14&address=china&birthday=2000-2-11
User 定义的属性有:name,age,并且有各自属性的对应的set方法以及toString方法
Person定义的属性有:name,age.address,birthday,并且有各自属性的对应的set方法以及toString方法
- /**
- *
- * 传递的参数的名字必须要与实体类的属性set方法后面的字符串匹配的上才能接收到参数,首字符的大小写不区分
- * 请求中传的参数只要是能和参数列表里面的变量名或者实体里面的set后面的字符串匹配的上就能接收到
- *
- */
- @RequestMapping("/toPerson3.do")
- public String toPerson3(Person person, User user) {
- System.out.println(person);
- System.out.println(user);
- return "jsp1/index";
- }
输出:
Person [name=zhangsan, age=14, address=china, birthday=Fri Feb 11 00:00:00 CST 2000]
User [name=zhangsan, age=14]
自动封装了对象,并且被分别注入进来!
注解形式的结果返回
1. 数据写到页面,方法的返回值采用ModelAndView, new ModelAndView("index", map);,相当于把结果数据放到response里面
url:http://localhost/mvc/test/toPerson41.do
url:http://localhost/mvc/test/toPerson42.do
url:http://localhost/mvc/test/toPerson43.do
url:http://localhost/mvc/test/toPerson44.do
- /**
- * HttpServletRequest可以直接定义在参数的列表,并且带回返回结果
- *
- */
- @RequestMapping("/toPerson41.do")
- public String toPerson41(HttpServletRequest request) throws Exception {
- request.setAttribute("p", newPesion());
- return "index";
- }
- /**
- *
- * 方法的返回值采用ModelAndView, new ModelAndView("index", map);
- * ,相当于把结果数据放到Request里面,不建议使用
- *
- */
- @RequestMapping("/toPerson42.do")
- public ModelAndView toPerson42() throws Exception {
- Map<String, Object> map = new HashMap<String, Object>();
- map.put("p", newPesion());
- return new ModelAndView("index", map);
- }
- /**
- *
- * 直接在方法的参数列表中来定义Map,这个Map即使ModelAndView里面的Map,
- * 由视图解析器统一处理,统一走ModelAndView的接口,也不建议使用
- */
- @RequestMapping("/toPerson43.do")
- public String toPerson43(Map<String, Object> map) throws Exception {
- map.put("p", newPesion());
- return "index";
- }
- /**
- *
- * 在参数列表中直接定义Model,model.addAttribute("p", person);
- * 把参数值放到request类里面去,建议使用
- *
- */
- @RequestMapping("/toPerson44.do")
- public String toPerson44(Model model) throws Exception {
- // 把参数值放到request类里面去
- model.addAttribute("p", newPesion());
- return "index";
- }
- /**
- * 为了测试,创建一个Persion对象
- *
- */
- public Person newPesion(){
- Person person = new Person();
- person.setName("james");
- person.setAge(29);
- person.setAddress("maami");
- SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
- Date date = format.parse("1984-12-28");
- person.setBirthday(date);
- return person;
- }
以上四种方式均能达到相同的效果,但在参数列表中直接定义Model,model.addAttribute("p", person);把参数值放到request类里面去,建议使用
2. Ajax调用springmvc的方法:直接在参数的列表上定义PrintWriter,out.write(result);把结果写到页面,建议使用的
url:http://localhost/mvc/test/toAjax.do
- /**
- *
- * ajax的请求返回值类型应该是void,参数列表里直接定义HttpServletResponse,
- * 获得PrintWriter的类,最后可把结果写到页面 不建议使用
- */
- @RequestMapping("/ajax1.do")
- public void ajax1(String name, HttpServletResponse response) {
- String result = "hello " + name;
- try {
- response.getWriter().write(result);
- } catch (IOException e) {
- e.printStackTrace();
- }
- }
- /**
- *
- * 直接在参数的列表上定义PrintWriter,out.write(result);
- * 把结果写到页面,建议使用的
- *
- */
- @RequestMapping("/ajax2.do")
- public void ajax2(String name, PrintWriter out) {
- String result = "hello " + name;
- out.write(result);
- }
- /**
- * 转向ajax.jsp页面
- */
- @RequestMapping("/toAjax.do")
- public String toAjax() {
- return "ajax";
- }
ajax页面代码如下:
- <script type="text/javascript" src="js/jquery-1.6.2.js"></script>
- <script type="text/javascript">
- $(function(){
- $("#mybutton").click(function(){
- $.ajax({
- url:"test/ajax1.do",
- type:"post",
- dataType:"text",
- data:{
- name:"zhangsan"
- },
- success:function(responseText){
- alert(responseText);
- },
- error:function(){
- alert("system error");
- }
- });
- });
- });
- </script>
- </head>
- <body>
- <input id="mybutton" type="button" value="click">
- </body>
表单提交和重定向
表单提交:
请求方式的指定:@RequestMapping( method=RequestMethod.POST )可以指定请求方式,前台页面就必须要以它制定好的方式来访问,否则出现405错误
表单jsp页面:- <html>
- <head>
- <base href="<%=basePath%>">
- <title>SpringMVC Form</title>
- </head>
- <body>
- <form action="test/toPerson5.do" method="post">
- name:<input name="name" type="text"><br>
- age:<input name="age" type="text"><br>
- address:<input name="address" type="text"><br>
- birthday:<input name="birthday" type="text"><br>
- <input type="submit" value="submit"><br>
- </form>
- </body>
- </html>
- /**
- * 转向form.jsp页面
- * @return
- */
- @RequestMapping("/toform.do")
- public String toForm() {
- return "form";
- }
- /**
- *
- * @RequestMapping( method=RequestMethod.POST)
- * 可以指定请求方式,前台页面就必须要以它制定好的方式来访问,否则出现405错误 a
- *
- */
- @RequestMapping(value = "/toPerson5.do", method = RequestMethod.POST)
- public String toPerson5(Person person) {
- System.out.println(person);
- return "jsp1/index";
- }
- /**
- *
- * controller内部重定向
- * redirect:加上同一个controller中的requestMapping的值
- *
- */
- @RequestMapping("/redirectToForm.do")
- public String redirectToForm() {
- return "redirect:toform.do";
- }
- /**
- *
- * controller之间的重定向:必须要指定好controller的命名空间再指定requestMapping的值,
- * redirect:后必须要加/,是从根目录开始
- */
- @RequestMapping("/redirectToForm1.do")
- public String redirectToForm1() {
- //test1表示另一个Controller的命名空间
- return "redirect:/test1/toForm.do";
- }
一. 准备工作
CREATE
DATABASE
wolf;
create
table
user
(
id
int
AUTO_INCREMENT
primary
key
,
name
varchar
(255)
not
null
,
niceName
varchar
(255)
not
null
,
pwd varchar(255) not null,
age int
)
insert
into
user
(
name,nickname,pwd,age
)
values
(
"wangxin"
,
"wang"
,"123",16
);
insert
into
user
(
name,nickname,pwd,age) valuse
(
"liming","li","123",18
);
二. Spring MVC 配置文件
WebContent/WEB-INF/Web.xml:
<pre name="code" class="html"><pre name="code" class="html"><?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 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"> <!-- spring提供转码 --> <display-name>ADong</display-name> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:config/applicationContext.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- spring提供转码 --> <filter> <filter-name>characterEncoding</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>characterEncoding</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <servlet> <servlet-name>spring-mvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>woder</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> </web-app>
src/config/applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context"xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-3.2.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-3.2.xsdhttp://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx-3.2.xsd"><!-- 1. 数据源 : DriverManagerDataSource --><bean id="datasource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"><property name="driverClassName" value="com.mysql.jdbc.Driver"/><property name="url" value="jdbc:mysql://localhost:3307/wolf"/><property name="username" value="root"/><property name="password" value="root"/></bean><!-- 2. mybatis的SqlSession的工厂: SqlSessionFactoryBean dataSource / typeAliasesPackage--><bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"><property name="dataSource" ref="datasource"/><property name="typeAliasesPackage" value="com.adong.model"/><property name="configLocation" value="classpath:config/mybatis-config.xml" /></bean><!-- 3. mybatis自动扫描加载Sql映射文件 : MapperScannerConfigurer sqlSessionFactory / basePackage--><bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"><property name="basePackage" value="com.adong.mapper"/><property name="sqlSessionFactory" ref="sqlSessionFactory"/></bean><!-- 4. 事务管理 : DataSourceTransactionManager --><bean id="manager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><property name="dataSource" ref="datasource"/></bean><!-- 5. 使用声明式事务 --><tx:annotation-driven transaction-manager="manager" /></beans>
WebContent/WEB-INF/spring-mvc.xml
<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:cxt="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd "><!-- 启动包扫描功能,以便注册带有@Controller、@Service、@repository、@Component等注解的类成为spring的bean --><cxt:component-scan base-package="com.adong.controller"><!-- <cxt:exclude-filter type="annotation" expression="org.springframework.stereotype.Service"/> --></cxt:component-scan><!-- 主要作用于@Controller,激活该模式,下面是一种简写形式,完全可以手动配置替代这种简写形式,它会自动注册DefaultAnnotationHandlerMapping与AnnotationMethodHandlerAdapter,是spring MVC为@Controllers分发请求所必须的 --><mvc:annotation-driven/><!-- 对模型视图名称的解析,在请求时模型视图名称添加前后缀 --><bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"><!-- <property name="cache" value="true"/> --><!-- viewClass属性可以用来指定前台在解析数据时,所允许采用的手段。实际上其默认值就是JstlView --> <!-- 将来有需要的话,就可以在这里把JstlView改成其它的,如FreeMarkerView,VelocityView,TilesView --> <!-- <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/> --><property name="prefix" value="/WEB-INF"/><property name="suffix" value=".jsp"/><property name="contentType" value="text/html;charset=UTF-8"/></bean></beans>
src/config/mybatis-config.xml
<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"><configuration><!-- 设置外部配置文件 --><!-- 设置类别名 --><typeAliases><typeAlias type="com.adong.bean.User" alias="User" /></typeAliases><!-- 设置数据库连接环境 --><!-- 映射文件 --><mappers><mapper resource="com/adong/mapper/userMapper.xml" /></mappers></configuration>
src/com/adong/mapper/userMapper.xml
<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"><mapper namespace="com.adong.mapper.UserMapper"><select id="login" resultMap="User">select * fromuserwherename=#{name}and pwd=#{password}</select><select id="list" resultMap="User">select * from user</select><insert id="add" parameterType="User">insert into user(name,nickname,pwd,age) values(#(name),#(nickname),#(pwd),#(age))</insert><select id="load" resultMap="User">select * from user where id = #{id}</select><delete id="delete" >delete from user where id = #{id}</delete><update id="update" >update user set name=#(name),nickname=#(nickname),pwd=#(pwd),age=#(age) where id = #{id}</update></mapper>
三.代码实践
以下为demo实例内容
model中user.java代码如下
package com.aodong.model;public class User { private long id; private String name; private String niceName; private int age; private String pwd; public long getId() {return id;}public void setId(long id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getNiceName() {return niceName;}public void setNiceName(String niceName) {this.niceName = niceName;} public String getNiceName() {return niceName;}public void setNiceName(String niceName) {this.niceName = niceName;}public int getAge() {return age;}public void setAge(int age) {this.age = age;} }
UserMapper.java代码如下
package com.aodong.mapper;import java.util.List;import com.aodong.model.User;public interface UserMapper { public void add(User user);public void update(User user);public void delete(long id);public User load(long id);public List<user> list();}
UserController.java代码如下:
com.aodong.controller;import java.util.List;import javax.annotation.Resource;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.ui.ModelMap;import org.springframework.web.bind.annotation.ModelAttribute;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.bind.annotation.ResponseBody;import org.springframework.web.servlet.ModelAndView;import com.aodong.model.User;import com.aodong.mapper.UserMapper;@Controller @RequestMapping("/user") public class UserController { @Resource private UserMapper userMapper; @RequestMapping(value="/list.do",method=RequestMethod.GET) public ModelAndView getUserlist(Model model){ ModelAndView mv = new ModelAndView(); List<Student> userList = userMapper.list(); System.out.println("log======table 'user' all records:"+userList.size()); mv.addObject("userList", userList); mv.setViewName("list"); return mv; } @RequestMapping(value="/add.do",method=RequestMethod.GET) public ModelAndView getAdd(){ ModelAndView mv = new ModelAndView(); mv.setViewName("add"); return mv; } @RequestMapping(value="/add.do",method=RequestMethod.POST) public String add(@ModelAttribute("user") User user){ userMapper.add(user); return "redirect:/user/list.do"; } @RequestMapping(value="/{userid}/show.do",method=RequestMethod.GET) public String show(@PathVariable Long userid,Model model){ User user = userMapper.load(userid); model.addAttribute("user", user); return "detail"; } @RequestMapping(value="/{userid}/del.do",method=RequestMethod.GET) public String del(@PathVariable Long userid){ userMapper.delete(userid); List<User> user=userMapper.list(); System.out.println(user.size()); return "redirect:/user/list.do"; } @RequestMapping(value="/{userid}/edit.do",method=RequestMethod.GET) public ModelAndView getEdit(@PathVariable Long userid,Model model){ User user = userMapper.load(userid); model.addAttribute("userAttribute", user); ModelAndView mv = new ModelAndView(); mv.setViewName("edit"); return mv; } @RequestMapping(value="/{userid}/save.do",method=RequestMethod.POST) public String saveEdit(@ModelAttribute("userAttribute") User user,@PathVariable Long userid){ userMapper.update(user); return "redirect:/user/list.do"; } @RequestMapping(value="/login.do", method=RequestMethod.GET) public String login(){ return "login"; } @RequestMapping(value="/login.do", method=RequestMethod.POST) public String submit(String userName, String passwd, HttpServletRequest request,HttpServletResponse response, ModelMap model){String name = request.getParameter("username");String password = request.getParameter("password");System.out.println("login");User user_login = usermapper.login(name, password);System.out.println(user_login);if (user_login == null) {System.out.println("Error login!"); return "fail"; } else { model.addAttribute("user", user_login);return "success"; } }}
WebContent/index.jsp 粉墨登场,(跳转到登录页面)
<jsp:forward page="/WEB-INF/user/login.jsp"></jsp:forward>
WebContent/WEB-INF/user/login.jsp(登录页面)
<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>login</title></head><body><form action="user/login.do" method="post"><table align="left"><tr><td>用户名:</td><td><input id="userName" type="text" name="username"></td></tr><tr><td>密码:</td><td><input id="password" type="password" name="password"></td></tr><tr><td><button type="submit" name="Submit">登录</button></td></tr></table></form></body></html>
WebContent/WEB-INF/user/sucess.jsp 登录成功
<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Success</title></head><body>Welcome<font color="red">${requestScope.user.name} </font>!<br><br><a href="list.do">用户信息列表</a></body></html>WebContent/WEB-INF/user/fail.jsp 登录失败
<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Fail</title></head><body><h3><font color="red">fail login!</font></h3><h2><a href="${pageContext.request.contextPath}">return the LoginPage!</a></h2></body></html>
WebContent/WEB-INF/student/list.jsp(列出所有记录)
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>User List</title> </head> <body> <a href="add.do">Add</a> <table> <tr> <td>ID</td> <td>Name</td> <td>NiceName</td> <td>Age</td> </tr> <c:forEach var="user" items="${userList }" > <tr> <td>${user.id }</td> <td>${user.name }</td> <td>${user.niceName }</td> <td>${user.age }</td> <td><a href="${user.id }/show.do">详细</a></td> <td><a href="${user.id}/edit.do">编辑</a></td> <td><a href="${user.id}/del.do">删除</a></td> </tr> </c:forEach> </table> </body> </html>
WebContent/WEB-INF/user/add.jsp(增加一条记录)
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Add User</title> </head> <body> <form action="add.do" method="post"> Name:<input id="name" name="name" type="text" /> <br> Nice Name:<input id="niceName" name="niceName" type="text" /> <br> Password:<input id="pwd" name="pwd" type="password" /> <br> Age:<input id="age" name="age" type="text" /> <br> <input type="submit" value="提交"> </form> </body> </html>
WebContent/WEB-INF/user/detail.jsp(显示一条记录)
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Show user</title> </head> <body> <c:out value="${user.id }"></c:out> <br> <c:out value="${user.name }"></c:out> <br> <c:out value="${user.niceName }"></c:out> <br> <c:out value="${user.age }"></c:out> </body> </html>
WebContent/WEB-INF/user/edit.jsp (编辑记录)
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Edit user</title> </head> <body> <c:url var="saveUrl" value="/student/${userAttribute.id}/save.do" /> <form:form modelAttribute="userAttribute" action="${saveUrl }"> <table> <tr> <td>ID:</td> <td><form:input path="id" /></td> </tr> <tr> <td>Name:</td> <td><form:input path="name"/></td> </tr> <tr> <td>Nice name:</td> <td><form:input path="niceName"/></td> </tr> <tr> <td>Password:</td> <td><form:password path="pwd"/></td> </tr> <tr> <td>Age:</td> <td><form:input path="age"/></td> </tr> </table> <input type="submit" value="Save"> </form:form> </body> </html>
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