跟着老師學習了兩個月的java語言，現在學習到了框架的部分，一直想在博客上寫點東西的，只是自己一直沒有時間，其實到底也是懶，魯迅說過:"時間就像海綿里的水，只要願意去擠還是有的",所以廢話不多說，直接上代碼。
首先框架一開始學還是比較難，ssm框架，就是Spring ,SpringMVC ,mybstis 的簡稱，我們是從mybstis 開始學起的，mybatis的作用作為一個連接數據庫的框架，可以很好配置連接好數據庫， 有mybatis,我們對數據庫增刪改查的操作更為簡便了。SSM框架，我們用MAVEN工具對他們進行管理，maven 工具的主要作用就是為我們的工程自動配置好我們所需的架包，是通過POM.xml 文件進行依懶管理的。
ssm02這個工程使用maven工具進行管理和配置的，他的主要作用是實現用戶的登陸和注冊！以及對學生信息的管理，當然其中包括了增刪改查的四個基本的操作，詳細的具體的過程直接看后面的代碼！
1 首先是POM.xml 文件的配置，他的作用主要是添加依懶的關系。
<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版本號 -->
<spring.version>4.0.2.RELEASE</spring.version>
<!-- mybatis版本號 -->
<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>
<!-- 表示開發的時候引入，發布的時候不會加載此包 -->
<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>
<!-- 導入java ee jar 包 -->
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>7.0</version>
</dependency>
<!-- 導入Mysql數據庫鏈接jar包 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.30</version>
</dependency>
<!-- 導入dbcp的jar包，用來在applicationContext.xml中配置數據庫 -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.2.2</version>
</dependency>
<!-- JSTL標簽類 -->
<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>${log4j.version}</version>
</dependency>
<!-- 格式化對象，方便輸出日志 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.1.41</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${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>
<!-- 上傳組件包 -->
<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 下面的四個文件
jdbc.properties 連接你的數據庫的配置，還有一些作用自己理解。
driver=com.mysql.jdbc.Driver url=jdbc:mysql://localhost:3306/ssm01 username=root password=root #定義初始連接數 initialSize=0 #定義最大連接數 maxActive=20 #定義最大空閑 maxIdle=20 #定義最小空閑 minIdle=1 #定義最長等待時間 maxWait=60000
log4.properties 用來記錄工程運行調試的記錄什么的。
#定義LOG輸出級別
log4j.rootLogger=INFO,Console,File
#定義日志輸出目的地為控制台
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.Target=System.out
#可以靈活地指定日志輸出格式，下面一行是指定具體的格式
log4j.appender.Console.layout = org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=[%c] - %m%n
#文件大小到達指定尺寸的時候產生一個新的文件
log4j.appender.File = org.apache.log4j.RollingFileAppender
#指定輸出目錄
log4j.appender.File.File = logs/ssm.log
#定義文件最大大小
log4j.appender.File.MaxFileSize = 10MB
# 輸出所以日志，如果換成DEBUG表示輸出DEBUG以上級別日志
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">
<!-- 自動掃描該包，使SpringMVC認為包下用了@controller注解的類是控制器 -->
<context:component-scan base-package="zizai.controller" />
<!--避免IE執行AJAX時，返回JSON出現下載文件 -->
<bean id="mappingJacksonHttpMessageConverter"
class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
<property name="supportedMediaTypes">
<list>
<value>text/html;charset=UTF-8</value>
</list>
</property>
</bean>
<!-- 啟動SpringMVC的注解功能，完成請求和注解POJO的映射 -->
<bean
class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
<property name="messageConverters">
<list>
<ref bean="mappingJacksonHttpMessageConverter" /> <!-- JSON轉換器 -->
</list>
</property>
</bean>
<!-- 定義跳轉的文件的前后綴 ，視圖模式配置-這里的配置我的理解是自動給后面action的方法return的字符串加上前綴和后綴，變成一個 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>
<!-- 配置文件上傳，如果沒有使用文件上傳可以不用配置，當然如果不配，那么配置文件中也不必引入上傳組件包 -->
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!-- 默認編碼 -->
<property name="defaultEncoding" value="utf-8" />
<!-- 文件大小最大值 -->
<property name="maxUploadSize" value="10485760000" />
<!-- 內存中的最大值 -->
<property name="maxInMemorySize" value="40960" />
</bean>
</beans>
4 spring mybatis.xml 他的作用就是就Spring 和Mybatis 整合起來。
<?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">
<!-- 自動掃描 -->
<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="${password}" />
<!-- 初始化連接大小 -->
<property name="initialSize" value="${initialSize}"></property>
<!-- 連接池最大數量 -->
<property name="maxActive" value="${maxActive}"></property>
<!-- 連接池最大空閑 -->
<property name="maxIdle" value="${maxIdle}"></property>
<!-- 連接池最小空閑 -->
<property name="minIdle" value="${minIdle}"></property>
<!-- 獲取連接最大等待時間 -->
<property name="maxWait" value="${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" />
<!-- 自動掃描mapping.xml文件 -->
<property name="mapperLocations" value="classpath:zizai/mapping/*.xml"></property>
</bean>
<!-- DAO接口所在包名，Spring會自動查找其下的類 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="zizai.dao" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
</bean>
<!-- (事務管理)transaction manager, use JtaTransactionManager for global tx -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
</beans>
5.還有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>
<!-- 編碼過濾器 -->
<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監聽器 -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 防止Spring內存溢出監聽器 -->
<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>
<!-- 此處可以可以配置成*.do，對應struts的后綴習慣 -->
<url-pattern>/</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>/index.jsp</welcome-file>
</welcome-file-list>
<!-- 配置SESSION超時，單位是分鍾 -->
<session-config>
<session-timeout>15</session-timeout>
</session-config>
</web-app>
二. 現在基本把SSM框架搭建起來，接下來就是上代碼的時間到，其實真的寫代碼好像也不多
如上圖，在zizai的文件夾有5個包，其中3個包使用工具generator生成的，這三個包是dao層，model層，mapping層，下面我也詳細講generator這個的用法。
1首先看我的generator文件夾
可以看到有四個文件，其中src是自己新建的，generator.xml 自帶的，需要根據你自己數據庫的來進行配值，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> <!-- 數據庫驅動包位置 --> <!-- <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> <!-- 數據庫鏈接URL、用戶名、密碼 --> <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 打開cmd ,執行txt 文件的那個生成語句
4 可以看到執行成功，這個時候src文件夾就會自動生成model ,mapping ,dao 三個層！
三。我們現在要寫的就是Controller層，Service接口層，ServiceImp接口的實現層！就一個列子為例來說明的吧！這個UserController層，主要是實現用戶的登陸和注冊以及修改用戶的密碼
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>0){ 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 接口層
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 目錄下的jsp文件夾下面的jsp 文件，這里主要帶上用戶登陸和注冊的jsp 文件的吧，其他的我粘上去給你們。
login.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>登錄</title>
</head>
<h3> 歡迎來到自在天原的登陸頁面</h3>
<body style="text-align:center">
<div >
<form action="/ssm02/user/login2">
用戶名:
<input type="text" name="name"><br><br>
    密碼: <input type="password" name="pwd"><br><br>
<button type="submit">登陸</button>
<a href="/ssm02/user/register"><button>注冊</button>
</div>
</body>
</html>
register.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>注冊</title> </head> <body> <div > <form action="/ssm02/user/register"> 用戶名：<input name = "name"><br> 密碼：<input name = "pwd" type = "password"><br> <input type = "submit" value = "注冊"> </form> </div> </body> </html>
就是這些東西了！ 第一次上傳有干貨的東西到博客園，其中難免會有許多的紕漏之處懇請各位園友兄弟一起指出，大家一起學習進步，本人也是剛開始學習java 語言，希望進步，提高自己的能力和水平，我寫這些東西為了自己的理解和學習，以便日后工作可以很快可以回憶和使用，最后給我的碼雲的鏈接，里面有ssm02工程的完整代碼以及自己平常學習的一些代碼和大家一起分享。
http://git.oschina.net/nn839155963/Zizaitianyuan-luojunyuan/tree/master
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