本專案github地址:https://github.com/syq524718898/ssmproject.git
SSM(Spring+SpringMVC+MyBatis)框架集由Spring、MyBatis兩個開源框架整合而成(SpringMVC是Spring中的部分內容)
我們的開發架構一般都是基於兩種形式,一種是 C/S 架構,也就是用戶端/伺服器,另一種是 B/S 架構,也就 是瀏覽器伺服器。在 JavaEE 開發中,幾乎全都是基於 B/S 架構的開發。那麼在 B/S 架構中,系統標準的三層架構包括:表現層、業務層、持久層。
三層架構中,每一層各司其職:
表現層:
也就是我們常說的web層。它負責接收用戶端請求,向用戶端響應結果,通常用戶端使用http協定請求 web 層,web 需要接收 http 請求,完成 http 響應。
表現層包括展示層和控制層:控制層負責接收請求,展示層負責結果的展示。
表現層依賴業務層,接收到用戶端請求一般會呼叫業務層進行業務處理,並將處理結果響應給用戶端。
表現層的設計一般都使用 MVC 模型。(MVC是表現層的設計模型,和其他層沒有關係)
業務層:
也就是我們常說的 service 層。它負責業務邏輯處理,和我們開發專案的需求息息相關。
web層依賴業務層,但是業務層不依賴 web 層。
業務層在業務處理時可能會依賴持久層,如果要對數據持久化需要保證事務一致性。(也就是我們說的,事務應該放到業務層來控制)
持久層:
也就是我們是常說的 dao 層。負責數據持久化,包括數據層即數據庫和數據存取層,數據庫是對數據進行持久化的載體,數據存取層是業務層和持久層互動的介面,業務層需要通過數據存取層將數據持久化到數據庫中。通俗的講,持久層就是和數據庫互動,對數據庫表進行曾刪改查的
MVC 全名是 Model View Controller,是模型(model)-檢視(view)-控制器(controller)的縮寫,是一種用於設計建立 Web 應用程式表現層的模式。MVC 中每個部分各司其職:
Model(模型):
通常指的就是我們的數據模型。作用一般情況下用於封裝數據。
View(檢視):
通常指的就是我們的 jsp 或者 html。作用一般就是展示數據的。
通常檢視是依據模型數據建立的。
Controller(控制器):
是應用程式中處理使用者互動的部分。作用一般就是處理程式邏輯的。
SpringMVC是一種基於 Java 的實現 MVC 設計模型的請求驅動型別的輕量級 Web 框架,屬於 Spring FrameWork的後續產品,已經融合在Spring Web Flow裏面。Spring框架提供了構建 Web 應用程式的全功能 MVC 模組。使用 Spring 可插入的 MVC 架構,從而在使用 Spring 進行 WEB 開發時,可以選擇使用 Spring 的 Spring MVC 框架或整合其他 MVC 開發框架,如Struts1(現在一般不用),Struts2等。
SpringMVC 已經成爲目前最主流的 MVC 框架之一,並且隨着 Spring3.0 的發佈,全面超越 Struts2,成爲最優秀的 MVC 框架。
它通過一套註解,讓一個簡單的 Java 類成爲處理請求的控制器,而無須實現任何介面。同時它還支援 RESTful 程式設計風格的請求 。
下面 下麪我們通過一個案例來進行SSM的整合
整合說明:SSM整合採用XML + 註解的方式
建立數據庫和表結構
# mysql 版本爲8.0以上
create database ssm_project;
use ssm_project;
create table account(id int primary key auto_increment,name varchar(20),money float);
插入一些數據
insert into account values(null,"jack",2000),(null,"marry",3000),(null,"kasa",1500),(null,"lina",4000),(null,"mack",5000),(null,"linda",6000),(null,"tina",4000),(null,"ethan",6000),(null,"james",3000),(null,"noah",7000),(null,"samuel",5500),(null,"jack",4000);
建立 Maven 工程
匯入座標並建立依賴
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>cn.itcast</groupId>
<artifactId>ssm</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>ssm Maven Webapp</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<spring.version>5.0.2.RELEASE</spring.version>
<mysql.version>8.0.11</mysql.version>
<mybatis.version>3.4.5</mybatis.version>
</properties>
<dependencies>
<!-- spring -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.6.8</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</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>${spring.version}</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.0</version>
</dependency>
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
</dependencies>
<build>
<finalName>ssm</finalName>
<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
<plugins>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.0.0</version>
</plugin>
<!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.7.0</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.20.1</version>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>3.2.0</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.2</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
package domain;
import java.io.Serializable;
/**
* 帳戶
*/
public class Account implements Serializable{
private Integer id;
private String name;
private Float money;
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;
}
public Float getMoney() {
return money;
}
public void setMoney(Float money) {
this.money = money;
}
@Override
public String toString() {
return "Account{" +
"id=" + id +
", name='" + name + '\'' +
", money=" + money +
'}';
}
}
package domain;
import java.util.List;
/**
* 分頁物件
*/
public class PageBean<T> {
private int totalCount; // 總記錄數
private int totalPage ; // 總頁碼
private List<T> list ; // 每頁的數據
private int currentPage ; //當前頁碼
private int rows=5;//每頁顯示的記錄數
public int getTotalCount() {
return totalCount;
}
public void setTotalCount(int totalCount) {
this.totalCount = totalCount;
}
public int getTotalPage() {
return totalPage;
}
public void setTotalPage(int totalPage) {
this.totalPage = totalPage;
}
public List<T> getList() {
return list;
}
public void setList(List<T> list) {
this.list = list;
}
public int getCurrentPage() {
return currentPage;
}
public void setCurrentPage(int currentPage) {
this.currentPage = currentPage;
}
public int getRows() {
return rows;
}
public void setRows(int rows) {
this.rows = rows;
}
@Override
public String toString() {
return "PageBean{" +
"totalCount=" + totalCount +
", totalPage=" + totalPage +
", list=" + list +
", currentPage=" + currentPage +
", rows=" + rows +
'}';
}
}
package dao;
import domain.Account;
import org.apache.ibatis.annotations.*;
import org.springframework.stereotype.Repository;
import java.util.List;
/**
* 帳戶dao介面
*/
@Repository
public interface AccountDao {
//查詢賬戶
@Select("select * from account limit #{start},#{count}")
List<Account> findAll(@Param("start")Integer start,@Param("count")Integer count);
//儲存賬戶
@Insert("insert into account (name,money) values (#{name},#{money})")
void saveAccount(Account account);
//更新賬戶
@Update("update account set name=#{name},money=#{money} where id=#{id}")
int updateAccount(Account account);
//刪除賬戶
@Delete("delete from account where id=#{acccountId}")
int deleteAccount(Integer acccountId);
//根據名稱查詢賬戶
@Select("select * from account where name=#{accountName} limit #{start},#{count}")
List<Account> findAccountByName(@Param("accountName") String accountName,@Param("start") Integer start,@Param("count") Integer count);
//根據ID查詢賬戶
@Select("select * from account where id=#{accountid}")
Account findAccountById(Integer accountid);
//查詢記錄數
@Select("select count(*) from account")
Integer findTotal();
//查詢滿足條件的記錄數
@Select("select count(*) from account where name=#{name}")
Integer findTotalbyname(String name);
}
service介面
package service;
import domain.Account;
import java.util.List;
public interface AccountService {
List<Account> findAll(Integer start,Integer count);
void saveAccount(Account account);
void updateAccount(Account account);
void deleteAccount(Integer accountId);
List<Account> findAccountByName(String accountName,Integer start,Integer count);
Account findAccountById(Integer accountid);
Integer findTotal();
Integer findTotalbyname(String name);
}
service實現類
package service.impl;
import dao.AccountDao;
import domain.Account;
import service.AccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service("accountService")
public class AccountServiceImpl implements AccountService{
@Autowired
private AccountDao accountDao;
@Override
public List<Account> findAll(Integer start,Integer count) {
return accountDao.findAll(start,count);
}
@Override
public void saveAccount(Account account) {
accountDao.saveAccount(account);
}
@Override
public void updateAccount(Account account) {
accountDao.updateAccount(account);
}
@Override
public void deleteAccount(Integer accountId) {
accountDao.deleteAccount(accountId);
}
@Override
public List<Account> findAccountByName(String accountName,Integer start,Integer count) {
return accountDao.findAccountByName(accountName,start,count);
}
@Override
public Account findAccountById(Integer accountid) {
return accountDao.findAccountById(accountid);
}
@Override
public Integer findTotal() {
return accountDao.findTotal();
}
@Override
public Integer findTotalbyname(String name) {
return accountDao.findTotalbyname(name);
}
}
建立applicationContext.xml的組態檔,整合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: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.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<!--開啓註解的掃描,希望處理service和dao,controller不需要Spring框架去處理-->
<context:component-scan base-package="controller,dao,domain,service" >
<!--設定哪些註解不掃描-->
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
</context:component-scan>
<!--Spring整合MyBatis框架-->
<!--設定連線池-->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="com.mysql.cj.jdbc.Driver"/>
<property name="jdbcUrl" value="jdbc:mysql:///ssm_project?useUnicode=true&serverTimezone=GMT&useSSL=false"/>
<property name="user" value="root"/>
<property name="password" value="qwe123"/>
</bean>
<!--設定SqlSessionFactory工廠-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
</bean>
<!--設定AccountDao介面所在包-->
<bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="dao"/>
</bean>
<!--設定Spring框架宣告式事務管理-->
<!--設定事務管理器-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<!--設定事務通知-->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="find*" read-only="true"/>
<tx:method name="*" isolation="DEFAULT"/>
</tx:attributes>
</tx:advice>
<!--設定AOP增強-->
<aop:config>
<aop:advisor advice-ref="txAdvice" pointcut="execution(* service.impl.*ServiceImpl.*(..))"/>
</aop:config>
</beans>
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<!--開啓註解掃描,只掃描Controller註解-->
<context:component-scan base-package="controller,dao,domain,service">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" />
</context:component-scan>
<!--設定的檢視解析器物件-->
<bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/pages/"/>
<property name="suffix" value=".jsp"/>
</bean>
<!--過濾靜態資源-->
<mvc:resources location="/css/" mapping="/css/**" />
<mvc:resources location="/images/" mapping="/images/**" />
<mvc:resources location="/js/" mapping="/js/**" />
<!--開啓SpringMVC註解的支援-->
<mvc:annotation-driven/>
</beans>
在web.xml中設定DispatcherServlet前端控制器,同時設定DispatcherServlet過濾器解決中文亂碼,載入spring組態檔
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app>
<display-name>Archetype Created Web Application</display-name>
<!--設定Spring的監聽器,預設只載入WEB-INF目錄下的applicationContext.xml組態檔-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!--設定組態檔的路徑-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<!--設定前端控制器-->
<servlet>
<servlet-name>dispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!--載入springmvc.xml組態檔-->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc.xml</param-value>
</init-param>
<!--啓動伺服器,建立該servlet-->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!--解決中文亂碼的過濾器-->
<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>
</web-app>
package controller;
import domain.Account;
import domain.PageBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import service.AccountService;
/**
* 帳戶web
*/
@Controller
@RequestMapping("/account")
public class AccountController {
@Autowired
private AccountService accountService;
@RequestMapping("add")
public String add()
{
return "add";
}
@RequestMapping("/addAccount")
public String save(Account account)
{
accountService.saveAccount(account);
return "redirect:/account/findAll";
}
@RequestMapping("/update")
public String update(Integer id,Model model)
{
Account accountById = accountService.findAccountById(id);
model.addAttribute("account",accountById);
return "update";
}
@RequestMapping("/updatesubmit")
public String updatesubmit(Account account)
{
accountService.updateAccount(account);
return "redirect:/account/findAll";
}
@RequestMapping("findAll")
public String findAll(Integer page,String name,Model model)
{
PageBean<Account> pb = new PageBean<>();
if (page==null || "".equals(page))
{
pb.setCurrentPage(1);
}
else
{
pb.setCurrentPage(page);
}
if (name==null || "".equals(name))
{
pb.setList(accountService.findAll((pb.getCurrentPage()-1)*pb.getRows(),pb.getRows()));
pb.setTotalCount(accountService.findTotal());
pb.setTotalPage(pb.getTotalCount()%pb.getRows()==0?pb.getTotalCount()/pb.getRows():pb.getTotalCount()/pb.getRows()+1);
}
else
{
pb.setList(accountService.findAccountByName(name,(pb.getCurrentPage()-1)*pb.getRows(),pb.getRows()));
pb.setTotalCount(accountService.findTotalbyname(name));
pb.setTotalPage(pb.getTotalCount()%pb.getRows()==0?pb.getTotalCount()/pb.getRows():pb.getTotalCount()/pb.getRows()+1);
}
model.addAttribute("condion",name);
model.addAttribute("pb",pb);
return "list";
}
@RequestMapping("delAccount")
public String delAccount(Integer id)
{
accountService.deleteAccount(id);
return "redirect:/account/findAll";
}
@RequestMapping("delSelect")
public String delSelect(String[] aid)
{
for (String id : aid) {
accountService.deleteAccount(Integer.parseInt(id));
}
return "redirect:/account/findAll";
}
}
前端檔案這裏就不展示了,專案github地址:https://github.com/syq524718898/ssmproject.git
歡迎存取
今天的分享就到這兒了,希望大家能夠有所收穫,歡迎關注。