一. SSM框架架构及流程介绍

​ SSM框架,通常是指将spring mvc+spring+mybatis三个框架整合在一起进行工作,spring mvc本身就是spring的一部分,所以这两者之间不用整合,这里主要做的事情就是将spring与mybatis框架进行整合,实际上就是将SqlSessionFactory对象交由spring来管理,事务方面也交由spring来管理。

 

1、SSM架构

​ SSM框架主要分为bean/entity层,mapper/dao层,service层,controller层。

(1)bean层(也叫entity/pojo/ model层) 用于存放我们的实体类,与数据库中的属性值基本保持一致。在bean创建具体的实体类对象,便于其他层对实体类对象进行直接操作

(2)dao层(mapper层) 负责与数据库进行联络的一些任务都封装在此,具体到对于某个表、某个实体的增删改查

(3)service层 service层主要负责业务模块的逻辑应用设计,可以细分为service接口和serviceImpl实现类

(4)controller层

​ 控制器,导入service层,负责具体的业务模块流程的控制,在此层里面要调用Service层的接口来控制业务流程

 

2、SSM流程

​ 调用流程: 前端JSP /html——> Controller ——> Service ——> Dao ——> 数据库

SSM(Spring+Spring MVC+Mybatis)框架搭建-LMLPHPSSM(Spring+Spring MVC+Mybatis)框架搭建-LMLPHP

    ​ controller层使用ajax+json与前端的html文件进行交互,获取前端请求和返回数据给前端。前端页面用户请求通过ajax传到controller层调用相应的方法处理,然后反馈数据到html文件,把处理后数据显示在页面上,反馈给用户。

​     controller 层在执行相应的方法时,实际上是去调用service层对应的接口,从而service层获取实现类中的方法去完成对应业务,service层一般用事务来进行方法操作,保证操作的一致性。

​     service层实现类包含业务实现方法,也包含一些关于数据库处理的操作,但不是直接和数据库打交道。service层的方法如果需要操作数据库,那么就需要去调用dao层的接口。

    dao层中mybatis框架常用mapper动态代理,所以dao层接口会对应mapper映射文件里面相应的sql语句,从而实现对数据库的操作。

    ​ 这里还有bean层,bean层通常存放我们的实体类,与数据库中的属性值基本保持一致。在bean创建具体的实体类对象,便于其他层对实体类对象进行直接操作。最终在dao层中这些实体类对象的操作会直接映射到对应的sql语句,操作对应的数据库里面的数据。

​     反过来理解:启动项目的时候会解析mapper.xml文件,xml中有一个命名空间namespace指向dao,用动态代理和反射技术会生成一个dao层的实现类。dao层用来操作数据库,返回数据,service调用dao层获取的数据,根据具体的业务做一些处理,controller层调用service层,一般用来接收前台传来的数据,再将从service层获取的数据传给前台。

 

二. SSM框架搭建

​ 1、创建一个maven项目,在里面新建常用的包,bean、controller、service、dao等;

​ 2、完成各配置文件配置

​ (1)添加依赖,在工程的pom.xml文件中添加项目需要的jar包(主要是spring mvc+spring+mybatis3个框架涉及的jar包)

<?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">
    <parent>
        <artifactId>learn</artifactId>
        <groupId>test</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>_11_ssm_crud</artifactId>
    <packaging>war</packaging>

    <name>_11_ssm_crud</name>
    <!-- FIXME change it to the project's website -->
    <url>http://www.example.com</url>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.0.4.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>5.0.4.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.8.13</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
            <version>5.0.4.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.0.4.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.0.4.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.0</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.46</version>
        </dependency>

        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>

        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.25</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.25</version>
        </dependency>

        <dependency>
            <groupId>net.sf.ehcache</groupId>
            <artifactId>ehcache</artifactId>
            <version>2.10.0</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis.caches</groupId>
            <artifactId>mybatis-ehcache</artifactId>
            <version>1.1.0</version>
        </dependency>

        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.4.6</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.1</version>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.9.4</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.9.4</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
            <version>2.9.4</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.module</groupId>
            <artifactId>jackson-module-parameter-names</artifactId>
            <version>2.9.4</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.datatype</groupId>
            <artifactId>jackson-datatype-jdk8</artifactId>
            <version>2.9.4</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.datatype</groupId>
            <artifactId>jackson-datatype-jsr310</artifactId>
            <version>2.9.4</version>
        </dependency>

        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>2.6</version>
        </dependency>

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.10</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.46</version>
        </dependency>
    </dependencies>

    <build>
        <finalName>_11_ssm_crud</finalName>
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
            </resource>
        </resources>
    </build>
</project>

​ (2)完成spring-mvc部分的配置

​ a. resouce文件夹下添加spring-mvc.xml文件,完成spring-mvc部分配置文件配置。在spring-mvc.xml完成注册组件扫描器、视图解析器、内部视图解析器、静态资源、解决返回json数据乱码问题的配置。

<?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.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">


    <!--解决返回json数据乱码问题-->
    <bean id="stringHttpMessageConverter"
          class="org.springframework.http.converter.StringHttpMessageConverter">
        <property name="supportedMediaTypes">
            <list>
                <value>text/plain;charset=UTF-8</value>
                <value>application/json;charset=UTF-8</value>
            </list>
        </property>
    </bean>
    <mvc:annotation-driven>
        <mvc:message-converters>
            <ref bean="stringHttpMessageConverter" />
        </mvc:message-converters>
    </mvc:annotation-driven>

    <!--静态资源-->
    <mvc:resources mapping="/images/**" location="/images/" />
    <mvc:resources mapping="/js/**" location="/js/" />
    <mvc:resources mapping="/css/**" location="/css/" />
    <mvc:resources mapping="/html/**" location="/html/" />

    <!-- 注册组件扫描器 ,组件扫描器只扫描controller包,不要扫描service等其他包,否则事务配置会失效-->
    <context:component-scan base-package="test.controller"/>

    <!-- 视图解析器 -->
    <bean class="org.springframework.web.servlet.view.BeanNameViewResolver"/>

    <!--内部视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/html/"/>
        <property name="suffix" value=".html"/>
    </bean>

</beans>

     b. 完成WEB-INF/web.xml配置

​ 完成指定spring配置文件的路径、注册spring监听器、注册字符集过滤器、注册spring mvc中央控制器的配置。

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">
    <!--指定spring配置文件的位置-->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring-*.xml</param-value>
    </context-param>

    <!--注册监听器-->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <!--配置spring MVC配置项-->
    <!--字符编码过滤器-->
    <filter>
        <filter-name>characterEncodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

        <!--指定字符编码-->
        <init-param>
            <param-name>encoding</param-name>
            <param-value>utf-8</param-value>
        </init-param>

        <!--强制指定字符编码,即如果在request中指定了字符编码,那么也会为其强制指定当前设置的字符编码-->
        <init-param>
            <param-name>forceEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>characterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <!-- 注册spring MVC中央控制器 -->
    <servlet>
        <servlet-name>springMVC</servlet-name>
        <!-- spring MVC中的核心控制器 -->
        <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>
    </servlet>
    <servlet-mapping>
        <servlet-name>springMVC</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

</web-app>

    (3)完成mybatis部分的配置

​     a. 添加数据库配置文件db.properties

#驱动
jdbc.driver=com.mysql.jdbc.Driver
#数据库连接地址
jdbc.url=jdbc:mysql://127.0.0.1:3306/ssm?useSSL=false
#用户名及数据库密码,这里需要修改,每个数据库的密码都不一样
jdbc.user=root
jdbc.password=mysql

    ​ b. 添加数据库日志配置文件log4j.properties

log4j.rootLogger=debug,console
log4j.appender.console = org.apache.log4j.ConsoleAppender
log4j.appender.console.Target = System.out
log4j.appender.console.layout = org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern= [%-5p][%d{yyyy-MM-dd HH:mm:ss}]%m%n

    ​ c. 添加数据库缓存配置文件ehcache.xml

<ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../config/ehcache.xsd">

    <diskStore path="java.io.tmpdir"/>

    <defaultCache
            maxElementsInMemory="10000"
            eternal="false"
            timeToIdleSeconds="120"
            timeToLiveSeconds="120"
            maxElementsOnDisk="10000000"
            diskExpiryThreadIntervalSeconds="120"
            memoryStoreEvictionPolicy="LRU">
        <persistence strategy="localTempSwap"/>
    </defaultCache>
</ehcache>

   ​ d. 添加mybatis.xml配置文件

这里只需要注册bean即可,mapper 映射文件的注册来使用spring的 MapperScannerConfigurer扫描器进行扫描,SqlSessionFactory交由spring管理,数据源也交由spring管理,所以都不需要配置。

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>

    <typeAliases>
        <package name="test.bean"/>
    </typeAliases>

</configuration>

    e. 添加spring-mybatis.xml配置文件

​ 加载数据源,将sqlsessionfactory交由spring管理,使用MapperScannerConfigurer将将Mapper接口生成代理对象。需要注意的是,在注册组件扫描器的时候无需再扫描controller包下的类了,因为已经在springmvc的配置文件中扫描过了。

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

    <!-- 加载配置文件 -->
    <context:property-placeholder location="classpath:db.properties"/>

    <!-- 注册组件扫描器 -->
    <context:component-scan base-package="test">
        <!--不再扫描controller注解-->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"
    </context:component-scan>

    <!-- 数据库连接池 -->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" destroy-method="close">
        <property name="url" value="${jdbc.url}" />
        <property name="username" value="${jdbc.user}" />
        <property name="password" value="${jdbc.password}" />
        <property name="driverClassName" value="${jdbc.driver}" />
        <property name="maxActive" value="10" />
        <property name="minIdle" value="5" />
    </bean>

    <!-- 让spring管理sqlsessionfactory 使用mybatis和spring整合包中的 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 数据库连接池 -->
        <property name="dataSource" ref="dataSource" />
        <!-- 加载mybatis的全局配置文件 -->
        <property name="configLocation" value="classpath:mybatis.xml" />
    </bean>

    <!-- 自动扫描 将Mapper接口生成代理对象 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!--Mapper文件所在路径-->
        <property name="basePackage" value="monmkey1024.dao" />
    </bean>


</beans>

    (4)完成spring部分的配置

​ 添加spring-tx.xml文件进行事务的管理,采用AOP注解方式进行事务管理

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


    <!-- 事务管理器 -->
    <bean id="transactionManager"
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!-- 数据源 -->
        <property name="dataSource" ref="dataSource" />
    </bean>
    <!--开启注解事务驱动-->
    <tx:annotation-driven transaction-manager="transactionManager"/>

</beans>

​ 3、完成各层接口及实现类

​ (1)创建对应的数据库表t_user,包含id(主键)、name、phone、address、birthday字段

​ (2)bean层,创建User类--用户类对象

package test1.bean;

import org.springframework.format.annotation.DateTimeFormat;

import java.time.LocalDate;

public class User {
    private int id;
    private String name;
    private  String phone;
    private String address;
    @DateTimeFormat(pattern = "yyyy-mm-dd")
    private LocalDate birthday;

    public User() {
    }

    public User(String name, String phone, String address, LocalDate birthday) {
        this.name = name;
        this.phone = phone;
        this.address = address;
        this.birthday = birthday;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getPhone() {
        return phone;
    }

    public void setPhone(String phone) {
        this.phone = phone;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public LocalDate getBirthday() {
        return birthday;
    }

    public void setBirthday(LocalDate birthday) {
        this.birthday = birthday;
    }
}

    ​ (3)dao层,创建UserDao接口文件和UserDao对应mapper文件UserDao.xml

​     UserDao接口文件

package test.dao;

import test.bean.User;

import java.util.List;

public interface UserDao {
    void addUser(User user);

    void updateUser(User user);

    List<User> selectUsers();

    User selectUserById(int id);

    void deleteUser(int id);
}

​     UserDao.xml(具体对数据库操作的sql语句在此编辑)

<?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="test.dao.UserDao">

    <cache type="org.mybatis.caches.ehcache.EhcacheCache"/>

    <insert id="addUser">
        INSERT INTO t_user
        (name,phone,address,birthday)
        VALUES
        (#{name},#{phone},#{address},#{birthday});

        <selectKey resultType="int" keyProperty="id" order="AFTER">
            SELECT @@identity
        </selectKey>
    </insert>

    <delete id="deleteUser">
        DELETE FROM t_user where id=#{id}
    </delete>

    <update id="updateUser">
        UPDATE t_user set name=#{name},phone=#{phone},address=#{address},birthday=#{birthday} where id=#{id}
    </update>

    <select id="selectUsers" resultType="user">
        SELECT id,name,phone,address,birthday FROM t_user
    </select>

    <select id="selectUserById" resultType="user">
        SELECT id,name,phone,address,birthday FROM t_user where id=#{id}
    </select>

</mapper>

    (4)service层:创建UserService接口和实现类

​     UserService接口

package test.service;

import test.bean.User;

import java.util.List;

public interface UserService {
    void addUser(User user);

    void updateUser(User user);

    List<User> selectUsers();

    User selectUserById(int id);

    void deleteUser(int id);
}

    ​ UserServiceImpl实现类()

package test.service.impl;

import test.bean.User;
import test.dao.UserDao;
import test.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

@Service  //用于对 Service 实现类进行注解,Spring会去自动创建UserServiceImpl的对象,并且通过注解,容器会查找UserService类型的实例userService将其注入,也可以用@Component

@Transactional  //使用注解配置事务
public class UserServiceImpl implements UserService {


    @Autowired  //自动注入注解,该注解默认使用按类型自动装配,即容器会查找UserDao类型的实例将其注入,初始化其对象,然后可以直接使用对象中的方法如 userDao.addUser(user),不用再用new创建对象
    private UserDao userDao;

    @Override
    public void addUser(User user) {
        userDao.addUser(user);


    }

    @Override
    public void updateUser(User user) {
        userDao.updateUser(user);

    }

    @Override
    public List<User> selectUsers() {
        return userDao.selectUsers();
    }

    @Override
    public User selectUserById(int id) {
        return userDao.selectUserById(id);
    }

    @Override
    public void deleteUser(int id) {
        userDao.deleteUser(id);

    }
}

    (5)controller层:创建controller类,使用restful风格:

package test.controller;

import com.alibaba.fastjson.JSON;
import test.bean.User;
import test.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController  //restful风格中spring mvc常用注解
public class UserController {

    @Autowired
    private UserService userService;

    @GetMapping("/users")  //该注解用来替代RequestMapping,特点是@GetMapping只处理get方式的请求,//注解后面要加上URL地址
    public String selectUsers(){

        List<User> users = userService.selectUsers();


        return JSON.toJSONString(users);
    }

    @GetMapping("/users/{id}")//注解后面要加上URL地址,地址中包含所需要的资源,比如这里的id
    public String selectUserById(@PathVariable int id) {

        User user = userService.selectUserById(id);

        return JSON.toJSONString(user);
    }

    @PostMapping("/users")
    public String addUser(@RequestBody User user) {


        try {
            userService.addUser(user);

            return JSON.toJSONString("success");
        } catch (Exception e) {
            e.printStackTrace();
            return JSON.toJSONString("fail");
        }

    }

    @PutMapping("/users/{id}")
    public String updateUser(@PathVariable int id, @RequestBody User user) {


        try {
            user.setId(id);
            userService.updateUser(user);

            return JSON.toJSONString("success");
        } catch (Exception e) {
            e.printStackTrace();
            return JSON.toJSONString("fail");
        }
    }

    @DeleteMapping("/users/{id}")
    public String deleteUser(@PathVariable int id) {

        try {
            userService.deleteUser(id);

            return JSON.toJSONString("success");
        } catch (Exception e) {
            e.printStackTrace();
            return JSON.toJSONString("fail");
        }
    }


}

​ 4、最后根据需要在webapp/html文件夹下创建需要的html前端文件即可。

以上就是搭建SSM框架组合完成简单增删改查的功能,大家可以根据这个思路自己去实践下。

demo文件后续会附上。

参考资料:

https://www.cnblogs.com/wmyskxz/p/8916365.html

相应的SSM框架入门教程

07-19 23:32