菜鸟 ssm 框架的学习之路

跟着老师学习了两个月的java语言，现在学习到了框架的部分，一直想在博客上写点东西的，只是自己一直没有时间，其实到底也是懒，鲁迅说过:"时间就像海绵里的水，只要愿意去挤还是有的",所以废话不多说，直接上代码。

首先框架一开始学还是比较难，ssm框架，就是Spring ,SpringMVC ,mybstis 的简称，我们是从mybstis 开始学起的，mybatis的作用作为一个连接数据库的框架，可以很好配置连接好数据库，有mybatis,我们对数据库增删改查的操作更为简便了。SSM框架，我们用MAVEN工具对他们进行管理，maven 工具的主要作用就是为我们的工程自动配置好我们所需的架包，是通过POM.xml 文件进行依懒管理的。

ssm02这个工程使用maven工具进行管理和配置的，他的主要作用是实现用户的登陆和注册！以及对学生信息的管理，当然其中包括了增删改查的四个基本的操作，详细的具体的过程直接看后面的代码！

1 首先是POM.xml 文件的配置，他的作用主要是添加依懒的关系。

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">

  <modelVersion>4.0.0</modelVersion>

  <groupId>com.zzty</groupId>

  <artifactId>ssm01</artifactId>

  <packaging>war</packaging>

  <version>0.0.1-SNAPSHOT</version>

  <name>ssm01 Maven Webapp</name>

  <url>http://maven.apache.org</url>

  <properties>

        <!-- spring版本号 -->

        <spring.version>4.0.2.RELEASE</spring.version>

        <!-- mybatis版本号 -->

        <mybatis.version>3.1.1</mybatis.version>

        <!-- log4j日志文件管理包版本 -->

        <slf4j.version>1.7.7</slf4j.version>

        <log4j.version>1.2.17</log4j.version>

    </properties>  

    <dependencies>

        <dependency>

            <groupId>junit</groupId>

            <artifactId>junit</artifactId>

            <version>4.11</version>

            <!-- 表示开发的时候引入，发布的时候不会加载此包 -->

            <scope>test</scope>

        </dependency>

        <!-- spring核心包 -->

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-core</artifactId>

            <version>${spring.version}</version>

        </dependency>  

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-web</artifactId>

            <version>${spring.version}</version>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-oxm</artifactId>

            <version>${spring.version}</version>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-tx</artifactId>

            <version>${spring.version}</version>

        </dependency>  

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-jdbc</artifactId>

            <version>${spring.version}</version>

        </dependency>  

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-webmvc</artifactId>

            <version>${spring.version}</version>

        </dependency>

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-aop</artifactId>

            <version>${spring.version}</version>

        </dependency>  

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-context-support</artifactId>

            <version>${spring.version}</version>

        </dependency>  

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-test</artifactId>

            <version>${spring.version}</version>

        </dependency>

        <!-- mybatis核心包 -->

        <dependency>

            <groupId>org.mybatis</groupId>

            <artifactId>mybatis</artifactId>

            <version>${mybatis.version}</version>

        </dependency>

        <!-- mybatis/spring包 -->

        <dependency>

            <groupId>org.mybatis</groupId>

            <artifactId>mybatis-spring</artifactId>

            <version>1.1.0</version>

        </dependency>

        <!-- 导入java ee jar 包 -->

        <dependency>

            <groupId>javax</groupId>

            <artifactId>javaee-api</artifactId>

            <version>7.0</version>

        </dependency>

        <!-- 导入Mysql数据库链接jar包 -->

        <dependency>

            <groupId>mysql</groupId>

            <artifactId>mysql-connector-java</artifactId>

            <version>5.1.30</version>

        </dependency>

        <!-- 导入dbcp的jar包，用来在applicationContext.xml中配置数据库 -->

        <dependency>

            <groupId>commons-dbcp</groupId>

            <artifactId>commons-dbcp</artifactId>

            <version>1.2.2</version>

        </dependency>

        <!-- JSTL标签类 -->

        <dependency>

            <groupId>jstl</groupId>

            <artifactId>jstl</artifactId>

            <version>1.2</version>

        </dependency>

        <!-- 日志文件管理包 -->

        <!-- log start -->

        <dependency>

            <groupId>log4j</groupId>

            <artifactId>log4j</artifactId>

            <version>${log4j.version}</version>

        </dependency>  

        <!-- 格式化对象，方便输出日志 -->

        <dependency>

            <groupId>com.alibaba</groupId>

            <artifactId>fastjson</artifactId>

            <version>1.1.41</version>

        </dependency>  

        <dependency>

            <groupId>org.slf4j</groupId>

            <artifactId>slf4j-api</artifactId>

            <version>${slf4j.version}</version>

        </dependency>  

        <dependency>

            <groupId>org.slf4j</groupId>

            <artifactId>slf4j-log4j12</artifactId>

            <version>${slf4j.version}</version>

        </dependency>

        <!-- log end -->

        <!-- 映入JSON -->

        <dependency>

            <groupId>org.codehaus.jackson</groupId>

            <artifactId>jackson-mapper-asl</artifactId>

            <version>1.9.13</version>

        </dependency>

        <!-- 上传组件包 -->

        <dependency>

            <groupId>commons-fileupload</groupId>

            <artifactId>commons-fileupload</artifactId>

            <version>1.3.1</version>

        </dependency>

        <dependency>

            <groupId>commons-io</groupId>

            <artifactId>commons-io</artifactId>

            <version>2.4</version>

        </dependency>

        <dependency>

            <groupId>commons-codec</groupId>

            <artifactId>commons-codec</artifactId>

            <version>1.9</version>

        </dependency>  

    </dependencies>

  <build>

    <finalName>ssm01</finalName>

  </build>

</project>

　　2 就是再配置resources 下面的四个文件

jdbc.properties 连接你的数据库的配置，还有一些作用自己理解。

driver=com.mysql.jdbc.Driver

url=jdbc:mysql://localhost:3306/ssm01

username=root

password=root

#定义初始连接数

initialSize=0

#定义最大连接数

maxActive=20

#定义最大空闲

maxIdle=20

#定义最小空闲

minIdle=1

#定义最长等待时间

maxWait=60000

　　log4.properties 用来记录工程运行调试的记录什么的。

#定义LOG输出级别

log4j.rootLogger=INFO,Console,File

#定义日志输出目的地为控制台

log4j.appender.Console=org.apache.log4j.ConsoleAppender

log4j.appender.Console.Target=System.out

#可以灵活地指定日志输出格式，下面一行是指定具体的格式

log4j.appender.Console.layout = org.apache.log4j.PatternLayout

log4j.appender.Console.layout.ConversionPattern=[%c] - %m%n

#文件大小到达指定尺寸的时候产生一个新的文件

log4j.appender.File = org.apache.log4j.RollingFileAppender

#指定输出目录

log4j.appender.File.File = logs/ssm.log

#定义文件最大大小

log4j.appender.File.MaxFileSize = 10MB

# 输出所以日志，如果换成DEBUG表示输出DEBUG以上级别日志

log4j.appender.File.Threshold = ALL

log4j.appender.File.layout = org.apache.log4j.PatternLayout

log4j.appender.File.layout.ConversionPattern =[%p] [%d{yyyy-MM-dd HH\:mm\:ss}][%c]%m%n

　　3 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:p="http://www.springframework.org/schema/p"

	xmlns:context="http://www.springframework.org/schema/context"

	xmlns:mvc="http://www.springframework.org/schema/mvc"

	xsi:schemaLocation="http://www.springframework.org/schema/beans

                        http://www.springframework.org/schema/beans/spring-beans-3.1.xsd

                        http://www.springframework.org/schema/context

                        http://www.springframework.org/schema/context/spring-context-3.1.xsd

                        http://www.springframework.org/schema/mvc

                        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">

	<!-- 自动扫描该包，使SpringMVC认为包下用了@controller注解的类是控制器 -->

	<context:component-scan base-package="zizai.controller" />

	<!--避免IE执行AJAX时，返回JSON出现下载文件 -->

	<bean id="mappingJacksonHttpMessageConverter"

		class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">

		<property name="supportedMediaTypes">

			<list>

				<value>text/html;charset=UTF-8</value>

			</list>

		</property>

	</bean>

	<!-- 启动SpringMVC的注解功能，完成请求和注解POJO的映射 -->

	<bean

		class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">

		<property name="messageConverters">

			<list>

				<ref bean="mappingJacksonHttpMessageConverter" />	<!-- JSON转换器 -->

			</list>

		</property>

	</bean>

	<!-- 定义跳转的文件的前后缀 ，视图模式配置-这里的配置我的理解是自动给后面action的方法return的字符串加上前缀和后缀，变成一个 可用的url地址-->

	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">

		<property name="prefix" value="/WEB-INF/jsp/" />

		<property name="suffix" value=".jsp" />

	</bean>

	<!-- 配置文件上传，如果没有使用文件上传可以不用配置，当然如果不配，那么配置文件中也不必引入上传组件包 -->

	<bean id="multipartResolver"

        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">

        <!-- 默认编码 -->

        <property name="defaultEncoding" value="utf-8" />

        <!-- 文件大小最大值 -->

        <property name="maxUploadSize" value="10485760000" />

        <!-- 内存中的最大值 -->

        <property name="maxInMemorySize" value="40960" />

    </bean> 

</beans>

　　4 spring mybatis.xml 他的作用就是就Spring 和Mybatis 整合起来。

<?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:mvc="http://www.springframework.org/schema/mvc"

	xsi:schemaLocation="http://www.springframework.org/schema/beans

                        http://www.springframework.org/schema/beans/spring-beans-3.1.xsd

                        http://www.springframework.org/schema/context

                        http://www.springframework.org/schema/context/spring-context-3.1.xsd

                        http://www.springframework.org/schema/mvc

                        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">

	<!-- 自动扫描 -->

	<context:component-scan base-package="zizai.*" />

	<!-- 引入配置文件 -->

	<bean id="propertyConfigurer"

		class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">

		<property name="location" value="classpath:jdbc.properties" />

	</bean>

	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"

		destroy-method="close">

		<property name="driverClassName" value="${driver}" />

		<property name="url" value="${url}" />

		<property name="username" value="${username}" />

		<property name="password" value="${password}" />

		<!-- 初始化连接大小 -->

		<property name="initialSize" value="${initialSize}"></property>

		<!-- 连接池最大数量 -->

		<property name="maxActive" value="${maxActive}"></property>

		<!-- 连接池最大空闲 -->

		<property name="maxIdle" value="${maxIdle}"></property>

		<!-- 连接池最小空闲 -->

		<property name="minIdle" value="${minIdle}"></property>

		<!-- 获取连接最大等待时间 -->

		<property name="maxWait" value="${maxWait}"></property>

	</bean>

	<!-- spring和MyBatis完美整合，不需要mybatis的配置映射文件 -->

	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

		<property name="dataSource" ref="dataSource" />

		<!-- 自动扫描mapping.xml文件 -->

		<property name="mapperLocations" value="classpath:zizai/mapping/*.xml"></property>

	</bean>

	<!-- DAO接口所在包名，Spring会自动查找其下的类 -->

	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

		<property name="basePackage" value="zizai.dao" />

		<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>

	</bean>

	<!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->

	<bean id="transactionManager"

		class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

		<property name="dataSource" ref="dataSource" />

	</bean>

</beans>

　　5.还有webapp 下面的WEB-INF下面的web.xml 的配置

<?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"

	version="3.0">

	<display-name>Archetype Created Web Application</display-name>

	<!-- Spring和mybatis的配置文件 -->

	<context-param>

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

		<param-value>classpath:spring-mybatis.xml</param-value>

	</context-param>

	<!-- 编码过滤器 -->

	<filter>

		<filter-name>encodingFilter</filter-name>

		<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

		<async-supported>true</async-supported>

		<init-param>

			<param-name>encoding</param-name>

			<param-value>UTF-8</param-value>

		</init-param>

	</filter>

	<filter-mapping>

		<filter-name>encodingFilter</filter-name>

		<url-pattern>/*</url-pattern>

	</filter-mapping>

	<!-- Spring监听器 -->

	<listener>

		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

	</listener>

	<!-- 防止Spring内存溢出监听器 -->

	<listener>

		<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>

	</listener>

	 <servlet-mapping>

        <servlet-name>default</servlet-name>

        <url-pattern>/resources/*</url-pattern>

    </servlet-mapping>

	<!-- Spring MVC servlet -->

	<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:spring-mvc.xml</param-value>

		</init-param>

		<load-on-startup>1</load-on-startup>

		<async-supported>true</async-supported>

	</servlet>

	<servlet-mapping>

		<servlet-name>SpringMVC</servlet-name>

		<!-- 此处可以可以配置成*.do，对应struts的后缀习惯 -->

		<url-pattern>/</url-pattern>

	</servlet-mapping>

	<welcome-file-list>

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

	</welcome-file-list>

	<!-- 配置SESSION超时，单位是分钟 -->

	<session-config>

		<session-timeout>15</session-timeout>

	</session-config>

</web-app>

二. 现在基本把SSM框架搭建起来，接下来就是上代码的时间到，其实真的写代码好像也不多

如上图，在zizai的文件夹有5个包，其中3个包使用工具generator生成的，这三个包是dao层，model层，mapping层，下面我也详细讲generator这个的用法。

1首先看我的generator文件夹

可以看到有四个文件，其中src是自己新建的，generator.xml 自带的，需要根据你自己数据库的来进行配值，先配置好我自己的generator.xml的文件

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN" "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">

<generatorConfiguration>

    <!-- 数据库驱动包位置 -->

    <!-- <classPathEntry location="D:\software\lib\mysql-connector-java-5.1.21.jar" /> -->

    <classPathEntry location="C:\Users\Administrator.WIN-2L7BJUF4P9K\.m2\repository\mysql\mysql-connector-java\5.1.30\mysql-connector-java-5.1.30.jar" />

    <context id="DB2Tables" targetRuntime="MyBatis3">

        <commentGenerator>

            <property name="suppressAllComments" value="true" />

        </commentGenerator>

        <!-- 数据库链接URL、用户名、密码 -->

         <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3306/test" userId="root" password="root">

        <!--<jdbcConnection driverClass="oracle.jdbc.driver.OracleDriver" connectionURL="jdbc:oracle:thin:@localhost:1521:orcl" userId="msa" password="msa">-->

        </jdbcConnection>

        <javaTypeResolver>

            <property name="forceBigDecimals" value="false" />

        </javaTypeResolver>

        <!-- 生成模型的包名和位置 -->

        <javaModelGenerator targetPackage="zz.model" targetProject="D:\zz\workspace\mybatis\src">

            <property name="enableSubPackages" value="true" />

            <property name="trimStrings" value="true" />

        </javaModelGenerator>

        <!-- 生成的映射文件包名和位置 -->

        <sqlMapGenerator targetPackage="zz.mapping" targetProject="D:\zz\workspace\mybatis\src">

            <property name="enableSubPackages" value="true" />

        </sqlMapGenerator>

        <!-- 生成DAO的包名和位置 -->

        <javaClientGenerator type="XMLMAPPER" targetPackage="zz.dao" targetProject="D:\zz\workspace\mybatis\src">

            <property name="enableSubPackages" value="true" />

        </javaClientGenerator>

        <!-- 要生成那些表(更改tableName和domainObjectName就可以) -->

        <table tableName="user_t" domainObjectName="User" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false" />

    </context>

</generatorConfiguration>

3 打开cmd ,执行txt 文件的那个生成语句

4 可以看到执行成功，这个时候src文件夹就会自动生成model ,mapping ,dao 三个层！

三。我们现在要写的就是Controller层，Service接口层，ServiceImp接口的实现层！就一个列子为例来说明的吧！这个UserController层，主要是实现用户的登陆和注册以及修改用户的密码

package zizai.controller;

import javax.annotation.Resource;

import javax.servlet.http.HttpServletRequest;

import org.springframework.stereotype.Controller;

import org.springframework.ui.Model;

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

import org.springframework.web.servlet.ModelAndView;

import zizai.model.User;

import zizai.service.StudentService;

import zizai.service.UserService;

@Controller

@RequestMapping("/user")

public class UserController {

    @Resource

    private UserService userService;

    @Resource

    private StudentService studentService;

     @RequestMapping("/showUser")

        public String showUser(HttpServletRequest request,Model model){

            int userId = Integer.parseInt(request.getParameter("id"));

            User user = this.userService.getUserById(userId);

            model.addAttribute("user", user);

            return "showUser";

}

     @RequestMapping("/table")

     public ModelAndView showTable(HttpServletRequest request){

     ModelAndView view = new ModelAndView("tables");

        return view; 

}

     @RequestMapping("/index")

        public ModelAndView toIndex(HttpServletRequest request){

         ModelAndView view = new ModelAndView("login");

        return view;

}

     @RequestMapping("/login2")

     public ModelAndView login(HttpServletRequest request,Model model){

         String  username = request.getParameter("name");

         String pwd = request.getParameter("pwd");

         User user = this.userService.getUserByName(username);

         String url="login";

         if(user!=null&&pwd.equals(user.getPwd())){

             url="sucess";

         }else{

             url="fail";

         }

         ModelAndView view = new ModelAndView(url);

         return view;

     }

     @RequestMapping("/register")

     public ModelAndView register(HttpServletRequest request,Model model){

         String  username = request.getParameter("name");

         String pwd = request.getParameter("pwd");

         User user = new User();

         user.setName(username);

         user.setPwd(pwd);

         int i=this.userService.addUser(user);

         String url="register";

         if(username!=null||pwd!=null){

         if(i>){

             url="login";

         }else{

             url="fail";

         }

        }

         ModelAndView view = new ModelAndView(url);

        return view;

     } 

     @RequestMapping("/updateUserPwd")

        public String updateUserPwd(HttpServletRequest request,Model model){

        String name=request.getParameter("name");

        String pwd=request.getParameter("pwd");

        String pwd1=request.getParameter("pwd1");

        if(pwd1.equals(pwd)&&pwd1!=null){

        User user=new User();

        user.setPwd(pwd);

        user.setName(name);

        int i=this.userService.updateUserPwdByName(user);

        return "success";

        }

        else{

            return "fail2";

        }

         }

     @RequestMapping("/getUserByName")

     public ModelAndView selectByName(HttpServletRequest request,Model model){

        String name = request.getParameter("name");

        User user=new User();

        user=this.userService.getUserByName(name);

        String url="getUserByName";

        if(name!=null){

            url="updateUserPwd";

        }

        ModelAndView view = new ModelAndView();

        view.setViewName(url);

        view.addObject("xxx", user);

        return view;

     }

}

2 useService 接口层

package zizai.service;

import zizai.model.User;

public interface UserService {

    public User getUserById(int id);

    public User getUserByName(String name);

    public int addUser(User user);

    public int updateUserPwdByName(User user);

}

3 UserServiceImp

package zizai.serviceImp;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;

import zizai.dao.UserMapper;

import zizai.model.User;

import zizai.service.UserService;

@Service("userService")

public class UserServiceImp implements UserService {

    @Resource

    private UserMapper userMapper;

    public User getUserById(int id) {

        // TODO Auto-generated method stub

        return userMapper.selectByPrimaryKey(id);

    }

    public int addUser(User user) {

        // TODO Auto-generated method stub

        return userMapper.insert(user);

    }

    public User getUserByName(String name) {

        // TODO Auto-generated method stub

        return userMapper.selectByName(name);

    }

    public int updateUserPwdByName(User user) {

        // TODO Auto-generated method stub

        return userMapper.updateUserPwdByName(user);

    }

}

4 model(USer model)

package zizai.model;

public class User {

    private Integer id;

    private String name;

    private String pwd;

    public Integer getId() {

        return id;

    }

    public void setId(Integer id) {

        this.id = id;

    }

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name == null ? null : name.trim();

    }

    public String getPwd() {

        return pwd;

    }

    public void setPwd(String pwd) {

        this.pwd = pwd == null ? null : pwd.trim();

    }

}

　　5 mapping (USer mapping)

<?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="zizai.dao.UserMapper" >

  <resultMap id="BaseResultMap" type="zizai.model.User" >

    <id column="id" property="id" jdbcType="INTEGER" />

    <result column="name" property="name" jdbcType="VARCHAR" />

    <result column="pwd" property="pwd" jdbcType="VARCHAR" />

  </resultMap>

  <sql id="Base_Column_List" >

    id, name, pwd

  </sql>

  <select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.Integer" >

    select

    <include refid="Base_Column_List" />

    from suser

    where id = #{id,jdbcType=INTEGER}

  </select>

  <select id="selectByName" resultMap="BaseResultMap" parameterType="java.lang.String" >

    select

    <include refid="Base_Column_List" />

    from suser

    where name = #{name,jdbcType=VARCHAR}

  </select>

  <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer" >

    delete from suser

    where id = #{id,jdbcType=INTEGER}

  </delete>

  <insert id="insert" parameterType="zizai.model.User" >

    insert into suser (id, name, pwd

      )

    values (#{id,jdbcType=INTEGER}, #{name,jdbcType=VARCHAR}, #{pwd,jdbcType=VARCHAR}

      )

  </insert>

  <insert id="insertSelective" parameterType="zizai.model.User" >

    insert into suser

    <trim prefix="(" suffix=")" suffixOverrides="," >

      <if test="id != null" >

        id,

      </if>

      <if test="name != null" >

        name,

      </if>

      <if test="pwd != null" >

        pwd,

      </if>

    </trim>

    <trim prefix="values (" suffix=")" suffixOverrides="," >

      <if test="id != null" >

        #{id,jdbcType=INTEGER},

      </if>

      <if test="name != null" >

        #{name,jdbcType=VARCHAR},

      </if>

      <if test="pwd != null" >

        #{pwd,jdbcType=VARCHAR},

      </if>

    </trim>

  </insert>

  <update id="updateByPrimaryKeySelective" parameterType="zizai.model.User" >

    update suser

    <set >

      <if test="name != null" >

        name = #{name,jdbcType=VARCHAR},

      </if>

      <if test="pwd != null" >

        pwd = #{pwd,jdbcType=VARCHAR},

      </if>

    </set>

    where id = #{id,jdbcType=INTEGER}

  </update>

  <update id="updateByPrimaryKey" parameterType="zizai.model.User" >

    update suser

    set name = #{name,jdbcType=VARCHAR},

      pwd = #{pwd,jdbcType=VARCHAR}

    where id = #{id,jdbcType=INTEGER}

  </update>

  <update id="updateUserPwdByName" parameterType="zizai.model.User">

  update suser

    set pwd = #{pwd,jdbcType=VARCHAR}

    where name = #{name,jdbcType=VARCHAR}

  </update>

</mapper>

　　6 dao (user Dao)

package zizai.dao;

import zizai.model.User;

public interface UserMapper {

	int deleteByPrimaryKey(Integer id);

	int insert(User record);

	int insertSelective(User record);

	User selectByName(String name);

	User selectByPrimaryKey(Integer id);

	int updateByPrimaryKeySelective(User record);

	int updateByPrimaryKey(User record);

	int updateUserPwdByName(User user);

}

最后就是剩下WEB-INF 目录下的jsp文件夹下面的jsp 文件，这里主要带上用户登陆和注册的jsp 文件的吧，其他的我粘上去给你们。

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

  <head>

    <title>登录</title>

  </head>

   <h3> 欢迎来到自在天原的登陆页面</h3>

  <body style="text-align:center">

  <div >

  <form action="/ssm02/user/login2">

   用户名:

    <input type="text" name="name"><br><br>

    &nbsp&nbsp&nbsp&nbsp密码: <input type="password" name="pwd"><br><br>

    <button type="submit">登陆</button>

    <a href="/ssm02/user/register"><button>注册</button>

</div>

  </body>

</html>

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

  <head>

    <title>注册</title>

  </head>  

  <body>

  <div >

  <form action="/ssm02/user/register">

    &nbsp;&nbsp;

    用户名：<input name = "name"><br>

&nbsp;&nbsp;&nbsp;&nbsp;密码：<input name = "pwd" type = "password"><br>

<input type = "submit" value = "注册">

  </form>

</div>

  </body>

</html>

就是这些东西了！第一次上传有干货的东西到博客园，其中难免会有许多的纰漏之处恳请各位园友兄弟一起指出，大家一起学习进步，本人也是刚开始学习java 语言，希望进步，提高自己的能力和水平，我写这些东西为了自己的理解和学习，以便日后工作可以很快可以回忆和使用，最后给我的码云的链接，里面有ssm02工程的完整代码以及自己平常学习的一些代码和大家一起分享。

http://git.oschina.net/nn839155963/Zizaitianyuan-luojunyuan/tree/master

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