SSM框架

ssm框架是由 mybatis+spring+spring mvc组成

依赖

<spring.version>5.1.8.RELEASE</spring.version>

<spring.version>5.1.8.RELEASE</spring.version>
<!--spring test -->
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-test</artifactId>
  <version>${spring.version}</version>
</dependency>

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



<!--spring mvc-->
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-webmvc</artifactId>
  <version>${spring.version}</version>
</dependency>

<!--aop-->
<dependency>
  <groupId>org.aspectj</groupId>
  <artifactId>aspectjweaver</artifactId>
  <version>1.9.4</version>
</dependency>

<!--jdbc连接-->
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-jdbc</artifactId>
  <version>${spring.version}</version>
</dependency>

<!--JSON转换-->
<dependency>
  <groupId>com.fasterxml.jackson.core</groupId>
  <artifactId>jackson-databind</artifactId>
  <version>2.9.8</version>
</dependency>

<!--jsp-->
<dependency>
  <groupId>javax.servlet.jsp</groupId>
  <artifactId>jsp-api</artifactId>
  <version>2.0</version>
  <scope>provided</scope>
</dependency>

<!--servlet-->
<dependency>
  <groupId>javax.servlet</groupId>
  <artifactId>javax.servlet-api</artifactId>
  <version>3.1.0</version>
  <scope>provided</scope>
</dependency>

<!-- JSTL标签库-->
<dependency>
  <groupId>javax.servlet</groupId>
  <artifactId>jstl</artifactId>
  <version>1.2</version>
</dependency>

<!--数据库连接-->
<dependency>
  <groupId>mysql</groupId>
  <artifactId>mysql-connector-java</artifactId>
  <version>8.0.11</version>
</dependency>

<!--阿里巴巴连接池-->
<dependency>
  <groupId>com.alibaba</groupId>
  <artifactId>druid</artifactId>
  <version>1.1.16</version>
</dependency>

<!--mybatis分页-->
<dependency>
  <groupId>com.github.pagehelper</groupId>
  <artifactId>pagehelper</artifactId>
  <version>5.1.8</version>
</dependency>

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

<!--mybatis spring整合-->
<dependency>
  <groupId>org.mybatis</groupId>
  <artifactId>mybatis-spring</artifactId>
  <version>1.3.0</version>
</dependency>

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

<dependency>
  <groupId>cn.hutool</groupId>
  <artifactId>hutool-all</artifactId>
  <version>5.7.3</version>
</dependency>

jdbc8.properties

jdbc.driv=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/cctv?useUnicode=true&characterEncoding=utf8&serverTimezone=Asia/Shanghai&useSSL=false
jdbc.usname=root
jdbc.password=root

log4j.properties

log4j.rootLogger=debug, stdout, R
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
# Pattern to output the caller's file name and line number.
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] (%F:%L) - %m%n
log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=example.log
log4j.appender.R.MaxFileSize=100KB
# Keep one backup file
log4j.appender.R.MaxBackupIndex=5
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n

web.xml

<?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_4_0.xsd"
         version="4.0">
    <!--启动spring-->
    <servlet>
        <servlet-name>mvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!--初始化文件-->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <!--通配符-->
            <param-value>classpath:spring-*.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>mvc</servlet-name>
        <!--访问格式-->
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>

mybatis-config.xml

<?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>

    <settings>
        <!--开启驼峰命名转换-->
        <setting name="mapUnderscoreToCamelCase" value="true"/>
        <!--使用列别名  替换列名-->
        <setting name="useColumnLabel" value="true"/>
        <!--jdbc获取自增主键-->
        <setting name="useGeneratedKeys" value="true"/>
    </settings>
    <!--分页插件-->
    <plugins>
        <plugin interceptor="com.github.pagehelper.PageInterceptor"></plugin>
    </plugins>
</configuration>

spring-web.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: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 https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd">
    <!--搜索包-->
    <context:component-scan base-package="ssm1"></context:component-scan>

    <!--开启静态资源-->
    <mvc:annotation-driven></mvc:annotation-driven>
    <mvc:default-servlet-handler></mvc:default-servlet-handler>

    <!--视图解析器-->
    <!--prefix:前缀 suffix：后缀 返回值若是ok 最后的到的是 前缀+返回值+后缀：/WEB-INF/pages/ok.jsp -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/pages/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>

</beans>

spring-dao.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: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 https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd">
    <!--配置整合 mybatis 过程-->
    <!--属性文件-->
    <context:property-placeholder location="classpath:jdbc8.properties"></context:property-placeholder>
    <!--配置数据库-->
    <bean id="datdasource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="driverClassName" value="${jdbc.driv}"></property>
        <property name="url" value="${jdbc.url}"></property>
        <property name="username" value="${jdbc.usname}"></property>
        <property name="password" value="${jdbc.password}"></property>
    </bean>

    <bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!--注入连接池-->
        <property name="dataSource" ref="datdasource"></property>
        <!--绑定mybatis配置文件-->
        <property name="configLocation" value="classpath:mybatis-config.xml"></property>
        <!--扫描entity-->
        <property name="typeAliasesPackage" value="ssm1.entity"/>
        <!--扫描mapper  -->
        <property name="mapperLocations" value="classpath:mapper/*.xml"/>
    </bean>

    <!--配置扫描dao-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!--注入sessionfactory-->
        <property name="sqlSessionFactoryBeanName" value="sessionFactory"></property>
        <!--扫描dao包-->
        <property name="basePackage" value="ssm1.dao"></property>
    </bean>
</beans>

resources下面创建Mapper

xxx.Mapper

<?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="ssm1.dao.DepositDao">
    <select id="getDeList" resultType="Deposit">
        select * from deposit;
    </select>
</mapper>

dao层

package ssm1.dao;

import java.util.List;

/**
 * @author 羡羡
 */
public interface DepositDao {
    /**
     * 查询所有
     * @return
     */
    public List getDeList();
}

实体

package ssm1.entity;

/**
 * @author 羡羡
 */
public class Deposit {
    public int id;
    public String name;
    public String iphone;
    public int fund;



    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 getIphone() {
        return iphone;
    }

    public void setIphone(String iphone) {
        this.iphone = iphone;
    }

    public int getFund() {
        return fund;
    }

    public void setFund(int fund) {
        this.fund = fund;
    }

    public Deposit() {
    }

    public Deposit(String name, String iphone, int fund) {
        this.name = name;
        this.iphone = iphone;
        this.fund = fund;
    }

    public Deposit(int id, String name, String iphone, int fund) {
        this.id = id;
        this.name = name;
        this.iphone = iphone;
        this.fund = fund;
    }

    @Override
    public String toString() {
        return "\nDeposit{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", iphone='" + iphone + '\'' +
                ", fund=" + fund +
                '}';
    }
}

测试

import cn.hutool.core.date.BetweenFormatter;
import cn.hutool.core.date.DateUnit;
import cn.hutool.core.date.DateUtil;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.junit4.SpringRunner;
import ssm1.dao.DepositDao;

import java.util.Date;
import java.util.List;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration({"classpath:spring-dao.xml"})
public class TestDao {

    @Autowired
    DepositDao dao;

    @Test
    public void test1(){
        List lis=dao.getDeList();
        System.out.println(lis);
    }
}

服务层

package ssm1.service;

import java.util.List;

/**
 * @author 羡羡
 */
public interface DepositService {
    public List getDeList();
}

服务实现层

package ssm1.service.impl;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import ssm1.dao.DepositDao;
import ssm1.service.DepositService;

import java.util.List;

@Service
public class DepositServiceimpl implements DepositService {

    @Autowired
    DepositDao depao;

    @Override
    public List getDeList() {
        List lis=depao.getDeList();
        System.out.println("正在处理业务！");
        return lis;
    }
}

JSON类

package ssm1.config;

public class JsonResultSet {
    int code;
    String msg;
    Object data;

    public int getCode() {
        return code;
    }

    public void setCode(int code) {
        this.code = code;
    }

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }

    public Object getData() {
        return data;
    }

    public void setData(Object data) {
        this.data = data;
    }

    public JsonResultSet() {
    }

    public JsonResultSet(int code, String msg) {
        this.code = code;
        this.msg = msg;
    }

    public JsonResultSet(int code, String msg, Object data) {
        this.code = code;
        this.msg = msg;
        this.data = data;
    }

    @Override
    public String toString() {
        return "JsonResultSet{" +
                "code=" + code +
                ", msg='" + msg + '\'' +
                ", data=" + data +
                '}';
    }
}

全局异常

ajax异常类

package ssm1.config;

/**
 * @author 羡羡
 */
public class AjaxException extends Exception {
    public AjaxException(String message) {
        super(message);
    }
}

普通异常类

package ssm1.config;

/**
 * @author 羡羡
 */
public class NormalException extends Exception{

    public NormalException(String message) {
        super(message);
    }
}

全局异常类

package ssm1.config;

import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;

/**
 * @author 羡羡
 *
 *
 * 全局异常处理
 */
@ControllerAdvice
public class GlobalControllerAdvice {

    /**
     * 自定义异常
     * @param ex
     * @return
     */
    @ExceptionHandler(NormalException.class)
    public ModelAndView handleNormal(NormalException ex){
        ModelAndView mv=new ModelAndView();
        mv.addObject("errmsg","自定义错误"+ex.getMessage());
        mv.setViewName("Erroe");
        return mv;
    }

    /**
     * ajax异常
     * @param ex
     * @return
     */
    @ExceptionHandler(AjaxException.class)
    @ResponseBody
    public JsonResultSet handleAjax(AjaxException ex){
        System.out.println("异常");
        JsonResultSet ok=new JsonResultSet(500,ex.getMessage());
        return ok;
    }
}

异常使用

ajax异常使用

@RequestMapping("/json")
@ResponseBody
public JsonResultSet de(int n) throws AjaxException {
    Deposit de=new Deposit(1005,"化解","121213113",800);
    JsonResultSet js;
    try {
        js=new JsonResultSet(200,"成功",de);
        int h=9/n;
    }catch (Exception e){
        throw new AjaxException(e.getMessage());
    }
    return  js;
}

普通异常使用

@RequestMapping("/hello")
public String seall(ModelMap map,int n) throws NormalException {
    List lsi=deser.getDeList();
    try {
        int h=9/n;
    }catch(Exception e){
        throw new NormalException(e.getMessage());
    }
    map.put("info",lsi);
    return "Hello";
}

控制层

package ssm1.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import ssm1.config.AjaxException;
import ssm1.config.JsonResultSet;
import ssm1.config.NormalException;
import ssm1.entity.Deposit;
import ssm1.service.DepositService;

import java.util.List;

/**
 * @author 羡羡
 */
@Controller
public class DepositController {

    @Autowired
    DepositService deser;

    @RequestMapping("/hello")
    public String seall(ModelMap map,int n) throws NormalException {
        List lsi=deser.getDeList();
        try {
            int h=9/n;
        }catch(Exception e){
            throw new NormalException(e.getMessage());
        }
        map.put("info",lsi);
        return "Hello";
    }

    @RequestMapping("/json")
    @ResponseBody
    public JsonResultSet de(int n) throws AjaxException {
        Deposit de=new Deposit(1005,"化解","121213113",800);
        JsonResultSet js;
        try {
            js=new JsonResultSet(200,"成功",de);
            int h=9/n;
        }catch (Exception e){
            throw new AjaxException(e.getMessage());
        }
        return  js;
    }
}

事务

spring-dao.xml 配置事务

<!--事务管理器-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    <property name="dataSource" ref="datdasource"></property>
</bean>

<!--开启事务-->
<tx:annotation-driven transaction-manager="transactionManager"></tx:annotation-driven>

serviceimpl使用事务

@Transactional(propagation = Propagation.REQUIRED,readOnly = false)

@Override
@Transactional(propagation = Propagation.REQUIRED,readOnly = false)
public List getDeList() {
    List lis=depao.getDeList();
    System.out.println("正在处理业务！");
    return lis;
}

项目结构