Javaweb 框架Spring+SpringMVc+Mybatis 简单环境搭建

一、需求

用 SSM实现简单的用户登录

二、开发环境准备

1、所需jar包截图

2、所需配置文件

2.1、 web.xml

<?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"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    id="WebApp_ID" version="3.0">
    <display-name>SpringMVCMybatisDemo</display-name>
    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
        <welcome-file>index.htm</welcome-file>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>default.html</welcome-file>
        <welcome-file>default.htm</welcome-file>
        <welcome-file>default.jsp</welcome-file>
    </welcome-file-list>
    <context-param>
        <param-name>contextConfigLocation</param-name>

//初始化加载applicationContext.xml 配置文件



        <param-value>classpath*:config/spring/applicationContext.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!-- 解决post乱码 -->
    <filter>
        <filter-name>CharacterEncodingFilter</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>CharacterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    
    <servlet>
        <servlet-name>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>


            <param-value>classpath:config/spring/springmvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>*.action</url-pattern>
    </servlet-mapping>

</web-app>

2.2、Springmvc.xml

<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:context="http://www.springframework.org/schema/context"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
        http://www.springframework.org/schema/beans/spring-beans-3.2.xsd 
        http://www.springframework.org/schema/mvc 
        http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd 
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context-3.2.xsd 
        http://www.springframework.org/schema/aop 
        http://www.springframework.org/schema/aop/spring-aop-3.2.xsd 
        http://www.springframework.org/schema/tx 
        http://www.springframework.org/schema/tx/spring-tx-3.2.xsd ">

    <!-- 可以扫描controller、service、...
    这里让扫描controller，指定controller的包
     -->
    <context:component-scan base-package="com.wwx.*"></context:component-scan>
    
        
    <!--注解映射器 -->
    <!-- <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/> -->
    <!--注解适配器 -->
    <!-- <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/> -->
    
    <!-- 使用 mvc:annotation-driven代替上边注解映射器和注解适配器配置
    mvc:annotation-driven默认加载很多的参数绑定方法，
    比如json转换解析器就默认加载了，如果使用mvc:annotation-driven不用配置上边的RequestMappingHandlerMapping和RequestMappingHandlerAdapter
    实际开发时使用mvc:annotation-driven
     -->
    <mvc:annotation-driven>
    <!-- 消息转换器 -->
        <!-- 解决@ResponseBody中文乱码 -->
        <mvc:message-converters register-defaults="true">
            <bean class="org.springframework.http.converter.StringHttpMessageConverter">
                <property name="supportedMediaTypes" value="text/html;charset=UTF-8" />
            </bean>
        </mvc:message-converters>
</mvc:annotation-driven>
    <!-- 视图解析器
    解析jsp解析，默认使用jstl标签，classpath下的得有jstl的包
     -->
    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!-- 配置jsp路径的前缀 -->
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <!-- 配置jsp路径的后缀 -->
        <property name="suffix" value=".jsp"/>
    </bean>
</beans>

2.3、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/beans
        http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-4.0.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx-4.0.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:3306/mybatis?characterEncoding=utf-8" />
        <property name="username" value="root" />
        <property name="password" value="wwx123123" />
    </bean>

    <!-- 2. mybatis的SqlSession的工厂: SqlSessionFactoryBean dataSource:引用数据源 MyBatis定义数据源,同意加载配置 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!-- 3. mybatis自动扫描加载Sql映射文件/接口 : MapperScannerConfigurer sqlSessionFactory 
        basePackage:指定sql映射文件/接口所在的包（自动扫描） -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.wwx.mapper"/>
        <property name="sqlSessionFactory" ref="sqlSessionFactory"/>
    </bean>

    <!-- 4. 事务管理 : DataSourceTransactionManager dataSource:引用上面定义的数据源 -->
    <bean id="txManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!-- 5. 使用声明式事务 transaction-manager：引用上面定义的事务管理器 -->
    <tx:annotation-driven transaction-manager="txManager" />
</beans>

2.4、log4j.properties

log4j.rootLogger=debug, stdout
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

log4j.logger.java.sql.ResultSet=INFO
log4j.logger.org.apache=INFO
log4j.logger.java.sql.Connection=DEBUG
log4j.logger.java.sql.Statement=DEBUG
log4j.logger.java.sql.PreparedStatement=DEBUG

log4j.appender.A2.File=./javalog.log //\u6587\u4EF6\u8F93\u51FA ,\u8868\u793A\u5728\u9879\u76EE\u7684\u6839\u4E0B\u5EFA\u7ACB\u65E5\u5FD7\u6587\u4EF6
log4j.appender.A2.MaxFileSize = 1KB
log4j.appender.A2.MaxBackupIndex = 3   //\u5907\u4EFD3\u4E2A\u6587\u4EF6
log4j.appender.A2.layout=org.apache.log4j.PatternLayout
log4j.appender.A2.layout.ConversionPattern=%d{yyyy-MM-dd hh:mm:ss}:%p %t %c - %m%n

开启log4j的好处之一就是控制台能打印当前操作的sql语句和参数信息以及异常

开启日志记录还需在web.xml 中加入

<!--设置log4j的配置文件位置-->
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>classpath:config/log4j.properties</param-value>
</context-param>
<!--使用监听加载log4j的配置文件-->
<listener>
<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>

<param-value>classpath:config/log4j.properties</param-value> 是加载 log4j.properties 配置文件，要写全该配置文件所在路径

项目运行后看到截图所示，则开启成功

三、建立数据库，建表

create database mybatis;
use mybatis;
create table users(
    id int primary key auto_increment,
    username varchar(20),
    password varchar(20),
    birthday date
)

四、编码

1、bean

User.java

package com.wwx.bean;

import java.util.Date;




public class User {
    private int id;
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    public String getSex() {
        return sex;
    }
    public void setSex(String sex) {
        this.sex = sex;
    }
    public Date getBirthday() {
        return birthday;
    }
    public void setBirthday(Date birthday) {
        this.birthday = birthday;
    }
    private String username;
    private String password;
    private String sex;
    private Date birthday;
    @Override
    public String toString() {
        return "User [id=" + id + ", username=" + username + ", password="
                + password + ", sex=" + sex + ", birthday=" + birthday + "]";
    }

}

2、mapper

2.1 UserMapper.java只写接口，不写具体方法实现，实现由mybatis完成，但是有两个条件

1、UserMApper.xml中的namespace要和UserMapper.java的路径相同，两个文件还需在同一目录下

2、UserMapeer.java 中的方法名要与 UseerMapper.xml中的select标签的ID相同，参数类型、数量也必须相同

UserMapper.java

package com.wwx.mapper;

import com.wwx.bean.User;

public interface UserMapper {
    public User queryUserByLoginUser(User user);
}

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">
<!-- 这个文件中编写sql语句 -->
<!-- xml 可以作为配置文件。 -->
<mapper namespace="com.wwx.mapper.UserMapper">
    <!-- 要在mapper标签内部编写sql -->
    <!-- 在select 标签内部 编写sql语句 -->
    <!-- resultType 表示将结果集封装成什么对象。写类的全路径 -->
    <select id="queryUserByLoginUser" parameterType="com.wwx.bean.User"
        resultType="com.wwx.bean.User">
        select * from users where
        username=#{username} and
        password=#{password}
    </select>
</mapper>

3、service

IUserService.java

package com.wwx.service;

import com.wwx.bean.User;

public interface IUserService {

    public User queryUserByLoginUser(User user);
}

UserServicesImpl.java

package com.wwx.service;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.wwx.bean.User;
import com.wwx.mapper.UserMapper;
/**
 * 
 * @author ������
 *
 */
@Service
@Transactional
public class UserServiceImpl implements IUserService {
    @Resource
    private UserMapper userMapper;
    @Override
    public User queryUserByLoginUser(User user) {
        return userMapper.queryUserByLoginUser(user);
    }

}

4、controller

UserController.java

package com.wwx.controller;

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.servlet.ModelAndView;

import com.wwx.bean.User;
import com.wwx.service.IUserService;

@Controller
@RequestMapping("/user")
public class UserController {
    @Autowired
    private IUserService iUserService;
    User users = new User();
    @RequestMapping("/userLogin")
    public ModelAndView UserLogin(HttpServletRequest httpServletRequest,User user){
        users=iUserService.queryUserByLoginUser(user);
        ModelAndView modelAndView = new ModelAndView();
        if (users==null) {
            modelAndView.setViewName("loginfail");
            String url = "index.jsp";
            modelAndView.addObject("url", url);
            System.out.println("登录失败");
            return modelAndView;
        }
        else {
            modelAndView.addObject("users",users);
            System.out.println(users);
            modelAndView.setViewName("loginsuccess");
            System.out.println("登录成功");
            return modelAndView;
        }
        
    }
    
}

5、jsp

index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
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>登录页</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 style="text-align: center;">
  <h1>欢迎来到大表锅测试主页</h1>
  <form action="${pageContext.request.contextPath }/user/userLogin.action" method="get">
    <h1>
        用户名：<input name="username" type="text">
    </h1>
    <h1>
        密     码：<input name="password" type="password">
    </h1>
    
    <button type="reset"><h3>清空</h3></button>
    <button type="submit"  style="margin-left: 100"><h3>登录</h3></button>
    
    </form>
  </body>
</html>

loginfail.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
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>登录失败</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>
    <h1>用户名或者密码错误，登录失败!</h1>
    ${url }
    <h4><a href="${url }">点击跳转到登录页</a></h4>
  </body>
</html>

loinsuccess.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
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>登录成功</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 style="text-align: center; ">
    <h1>${user.username}登录成功，恭喜你代码没有Bug</h1>
  </body>
</html>

五、项目部署在Tomcat

六、运行成功截图

GitHub 项目源代码下载：https://github.com/Wuwenxin1024/SSM-.git

posted @ 2017-09-24 12:13 吴文鑫阅读(325) 评论(0) 收藏举报

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