SpringMVC+myBatis简单示例分享

package

com.wg.test;

import

javax.servlet.http.HttpServletRequest;

import

org.springframework.beans.factory.annotation.Autowired;

import

org.springframework.stereotype.Controller;

import

org.springframework.web.bind.annotation.RequestMapping;

import

org.springframework.web.bind.annotation.RequestMethod;

import

org.springframework.web.servlet.ModelAndView;

import

com.wg.bean.User;

import

com.wg.service.UserService;

@Controller

public

class

UserController {

@Autowired

private

UserService userService;

@RequestMapping

(value =

"regist"

, method = RequestMethod.POST)

public

ModelAndView regist(HttpServletRequest request, User user) {

try

{

userService.saveUser(user);

}

catch

(Exception e) {

e.printStackTrace();

}

request.setAttribute(

"username"

, user.getUsername());

request.setAttribute(

"password"

, user.getPassword());

System.out.println(user.toString());

return

new

ModelAndView(

"succ"

);

}

/***

*用户登陆

*<p>

*注解配置，只允许POST提交到该方法

*

*@param username

*@param password

*@return

*/

@RequestMapping

(value =

"login"

, method = RequestMethod.POST)

public

ModelAndView login(String username, String password) {

// 验证传递过来的参数是否正确，否则返回到登陆页面。

if

(

this

.checkParams(

new

String[] { username, password })) {

// 指定要返回的页面为succ.jsp

ModelAndView mav =

new

ModelAndView(

"succ"

);

// 将参数返回给页面

mav.addObject(

"username"

, username);

mav.addObject(

"password"

, password);

System.out

.println(

"username="

+ username +

" password="

+ password);

return

mav;

}

return

new

ModelAndView(

"home"

);

}

/***

*验证参数是否为空

*

*@param params

*@return

*/

private

boolean

checkParams(String[] params) {

for

(String param : params) {

if

(param ==

""

|| param ==

null

|| param.isEmpty()) {

return

false

;

}

}

return

true

;

}

}

<?xml version=

"1.0"

encoding=

"UTF-8"

?>

<web-app version=

"3.0"

xmlns=

"http://java.sun.com/xml/ns/javaee"

xmlns:xsi=

"http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http:

//java.sun.com/xml/ns/javaee

http:

//java.sun.com/xml/ns/javaee/web-app_3_0.xsd">

<!-- 监听spring上下文容器 -->

<listener>

<listener-

class

>

org.springframework.web.context.ContextLoaderListener

</listener-

class

>

</listener>

<!-- 加载spring的xml配置文件到 spring的上下文容器中 -->

<context-param>

<param-name>contextConfigLocation</param-name>

<param-value>classpath:*-context.xml</param-value>

</context-param>

<!-- 配置Spring MVC DispatcherServlet -->

<servlet>

<servlet-name>MVC</servlet-name>

<servlet-

class

>org.springframework.web.servlet.DispatcherServlet</servlet-

class

>

<!-- 初始化参数 -->

<init-param>

<!-- 加载SpringMVC的xml到 spring的上下文容器中 -->

<param-name>contextConfigLocation</param-name>

<param-value>

/WEB-INF/classes/mvc-context.xml

</param-value>

</init-param>

<load-on-startup>

1

</load-on-startup>

</servlet>

<!-- 配置DispatcherServlet所需要拦截的 url -->

<servlet-mapping>

<servlet-name>MVC</servlet-name>

<url-pattern>*.

do

</url-pattern>

</servlet-mapping>

<welcome-file-list>

<welcome-file>index.jsp</welcome-file>

</welcome-file-list>

</web-app>

<?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"

xsi:schemaLocation="http:

//www.springframework.org/schema/beans

http:

//www.springframework.org/schema/beans/spring-beans-3.0.xsd

http:

//www.springframework.org/schema/context

http:

//www.springframework.org/schema/context/spring-context-3.0.xsd">

<context:component-scan base-

package

=

"com.wg.*"

/>

<bean id=

"viewResolver"

class

=

"org.springframework.web.servlet.view.UrlBasedViewResolver"

>

<property name=

"viewClass"

value=

"org.springframework.web.servlet.view.JstlView"

/>

<property name=

"prefix"

value=

"/page/"

/>

<property name=

"suffix"

value=

".jsp"

/>

</bean>

</beans>

<?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.wg.dao.UserDao"

>

<!-- 取得用户列表 -->

<select id=

"getUser"

resultType=

"User"

parameterType=

"User"

>

select

id,

username,

password

From user

<where>

<

if

test=

"username != null and password != null"

>

username =#{username}and password =#{password}

</

if

>

<

if

test=

"id!=null"

>

and id=#{id}

</

if

>

</where>

</select>

<!-- 新增用户 -->

<insert id=

"insertUser"

parameterType=

"User"

>

insert into user(id,username,password) values(#{id},#{username},#{password})

<selectKey keyProperty=

"id"

resultType=

"Long"

>

select last_insert_id() as id

</selectKey>

</insert>

<!-- 修改用户 -->

<update id=

"updateUser"

parameterType=

"User"

>

update user

<set>

<

if

test=

"username != null"

>username=#{username},</

if

>

<

if

test=

"password != null"

>password=#{password},</

if

>

</set>

where id=#{id}

</update>

<!-- 删除用户 -->

<delete id=

"deleteUser"

parameterType=

"Long"

>

delete from user where id=#{id}

</delete>

</mapper>