? ? ?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 文件進行依賴管理的。

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和自動下載相關的包。

<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 、配置resource下面的四個文件。

3、首先對resource下的jdbc.properties進行配置 ,作用就是連接你的數據庫的配置

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

4、接著是log4.properties的配置，它的作用是用來記錄運行時產生的信息。

#定義LOG輸出級別
log4j.rootLogger=INFO,Console,File
#定義日志輸出目的地為控制臺
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

5、接著是spring mvc .xml的配置。

<?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 --><beanclass="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>

6、spring mybatis.xml? 他的作用就是整合Spring 和Mybatis。

<?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>

?

7、還有的就是webapp 下面的WEB-INF下面的web.xml 的配置了

<?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，單位是分鐘 --><session-config><session-timeout>15</session-timeout></session-config></web-app>

?8、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 {@Resourceprivate UserService userService;@Resourceprivate 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;}}

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);}

UserServiceImp 實現層

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 {@Resourceprivate UserMapper userMapper;public User getUserById(int id) {// TODO Auto-generated method stubreturn userMapper.selectByPrimaryKey(id);}public int addUser(User user) {// TODO Auto-generated method stubreturn userMapper.insert(user);}public User getUserByName(String name) {// TODO Auto-generated method stubreturn userMapper.selectByName(name);}public int updateUserPwdByName(User user) {// TODO Auto-generated method stubreturn userMapper.updateUserPwdByName(user);}}

model(USer model)層

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();}
}

?

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 suserwhere id = #{id,jdbcType=INTEGER}</select><select id="selectByName" resultMap="BaseResultMap" parameterType="java.lang.String" >select <include refid="Base_Column_List" />from suserwhere name = #{name,jdbcType=VARCHAR}</select><delete id="deleteByPrimaryKey" parameterType="java.lang.Integer" >delete from suserwhere 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 suserset name = #{name,jdbcType=VARCHAR},pwd = #{pwd,jdbcType=VARCHAR}where id = #{id,jdbcType=INTEGER}</update><update id="updateUserPwdByName" parameterType="zizai.model.User">update suserset pwd = #{pwd,jdbcType=VARCHAR}where name = #{name,jdbcType=VARCHAR}</update>
</mapper>

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 文件了。

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>&nbsp&nbsp&nbsp&nbsp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">&nbsp;&nbsp;  用戶名：<input name = "name"><br>
&nbsp;&nbsp;&nbsp;&nbsp;密碼：<input name = "pwd" type = "password"><br>
<input type = "submit" value = "注冊"></form>
</div> </body>  
</html> 

?

轉載于:https://www.cnblogs.com/chendezhen/p/8193655.html

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