Spring + SpringMVC + Mybatis (Spring Tools Suites 3) simple project

STS 3

tomcat 9.0,

JDK 8

First, the project structure

Second, the project relies

 Third, create a web.xml file generated before the project

Project Right - "Java EE Tools -> Generate Deployment Descriptor Stub -> generate web.xml file

Fourth, create a project code

1. Create entity classes

 For example: Dept.java

package com.dxj.entity;
import java.sql.Timestamp;
import org.apache.ibatis.type.Alias;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
/**
 * 部门 Dept
 * @author Administrator
 *
 */
@Alias("Dept")
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Dept {
    private Integer id;
    private String name;
    private String loc;
    private Timestamp date;
    private String person;

}

2. Create a data persistence layer Mapper

For example: DeptMapper.java

package com.dxj.mapper
import java.util.List;
import org.apache.ibatis.annotations.Param;
import com.dxj.entity.Dept;
/**
 * 部门 测试方法
 * @author Administrator
 *
 */
public interface DeptMapper {
    void save(Dept dept);
    List<Dept> findAll();
    void update(@Param("upd")Dept dept);
    void del(Integer id);

}

3. Create a service layer

  

 For example: IDeptService.java

package com.dxj.service;
import java.util.List;
import org.apache.ibatis.annotations.Param;
import com.dxj.entity.Dept;
/**
 * 部门 服务接口
 * @author Administrator
 *
 */
public interface IDeptService {
    void save(Dept dept);
    List<Dept> findAll();
    void update(@Param("upd")Dept dept);
    void del(Integer id);
}

      IDeptServiceImpl.java

package com.dxj.service.impl;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;
import com.dxj.entity.Dept;
import com.dxj.mapper.DeptMapper;
import com.dxj.service.IDeptService;
/**
 * 部门 服务实现
 * @author Administrator
 *
 */
@Service("ids")
@Transactional(propagation = Propagation.SUPPORTS)
public class DeptServiceImpl implements IDeptService {
    @Autowired
    private DeptMapper iDeptMapper;
    @Override
    public List<Dept> findAll() {
        return iDeptMapper.findAll();
    }
    @Override
    public void save(Dept dept) {
        iDeptMapper.save(dept);
    }
    @Override
    public void update(Dept dept) {
        iDeptMapper.update(dept);
    }
    @Override
    public void del(Integer id) {
        iDeptMapper.del (id); 
    } 
}

4. Create front and rear ends Interaction Layer Controller

 For example: DeptController.java

package com.dxj.controllers;

import java.sql.Timestamp;
import java.util.Date;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.dxj.entity.Dept;
import com.dxj.service.IDeptService;

/**
 * 部门 
 * @author Administrator
 *
 */
@Controller
public class DeptController {
    @Autowired
    private IDeptService ids;
    @RequestMapping("/findAll.action")
    @ResponseBody
    public List<Dept> findAll(){
        return ids.findAll();
    }
    @RequestMapping("/save.action")
    @ResponseBody
    public String save(Dept dept) {
            ids.save(new Dept(null, "dxj",
                    "308", new Timestamp(new Date().getTime()), "summer"));
            return "Added successfully";
    }
    @RequestMapping("/update.action")
    @ResponseBody
    public String update(Dept dept) {
        ids.update(new Dept(2, "hf", null, null, null));
        return "修改成功";
    }
    @RequestMapping("/del.action")
    @ResponseBody
    public String del(Integer id) {
        ids.del(4);
        return "删除成功";
    }

}

5, configuration files

 1.springmvc-servlet.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/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
        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-4.3.xsd">
        
    <context:component-scan base-package="com.dxj.controllers" />
    <mvc:annotation-driven />
     <mvc:resources location="/static/" mapping="/static/**"/>
    <bean id="multipartResolver"
        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <property name="maxUploadSize" value="10240000" />
        <property name="maxUploadSizePerFile" value="1024000" />
    </bean>
</beans>

2.mysql.properties

druid.url=jdbc:mysql://localhost:3306/hospital?useSSL=false&serverTimezone=UTC&allowPublicKeyRetrieval=true
druid.username=root
druid.password=1234
druid.driverClassName=com.mysql.jdbc.Driver

3.xx.mapper.xml

<?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="com.dxj.mapper.DeptMapper">
    <resultMap id="DeptMap" type="Dept">
        <id column="de_id" jdbcType="INTEGER" property="id" />
        <result column="de_name" jdbcType="VARCHAR" property="name" />
        <result column="de_loc" jdbcType="VARCHAR" property="loc" />
        <result column="de_time" property="date" />
        <result column="de_by" jdbcType="VARCHAR" property="person" />
    </resultMap>

    <!-- 增加 -->
    <insert id="save">
        INSERT INTO dept_tab(de_name,de_loc,de_time,de_by)
        VALUES(#{name},#{loc},#{date},#{person})
    </ Fullselect<-!>INSERT

    -->
    <select id="findAll" resultMap="DeptMap">
        SELECT * FROM dept_tab
    </select>

    <!-- 修改-->
    <update id="update">
        UPDATE dept_tab
        <set>
            <if test="upd.name!=null">
                de_name=#{upd.name}
            </if>
            <if test="upd.loc!=null">
                de_loc=#{upd.loc}
            </if>
            <if test="upd.date!=null">
                de_time=#{upd.date}
            </if>
            <if test="upd.person!=null">
                de_by=#{upd.person}
            </if>
        </set>
        WHERE de_id=#{upd.id}
    </update>
    
    <!-- 删除-->
    <delete id="del">
     DELETE  FROM dept_tab WHERE de_id=#{id}
    </delete>

</mapper>

4.configuration.xml

<? Xml Version = "1.0" encoding = "UTF-8" ?> 
<! DOCTYPE the Configuration the PUBLIC "- // mybatis.org//DTD Config 3.0 // EN" 
"http://mybatis.org/dtd/mybatis config.dtd--3 " > 

< Configuration > 
    < Settings > 
        < Setting name =" jdbcTypeForNull " value =" NULL "  /> 
    </ Settings > 
    
    < plugins > 
         < plugin Interceptor =" com.github.pagehelper.PageInterceptor " > 
        < ! - configuration parameters using the following way, will be behind all the parameters introduced ->
        <property name="helperDialect" value="mysql"/>
        <property name="reasonable" value="true"/>
    </plugin>
    </plugins> 
</configuration>

5.spring-mybatis.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:tx="http://www.springframework.org/schema/tx"
    xmlns:aop="http://www.springframework.org/schema/aop"
    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-4.3.xsd
        http://www.springframework.org/schema/aop
         http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
        http://www.springframework.org/schema/tx
         http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">

  <context:component-scan base-package="com.dxj">
           <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
  </context:component-scan>
  
  <!-- 读取mysql的配置文件 -->
  <context:property-placeholder location="classpath:mybatis/config/mysql.properties"/>
  
  <!-- 配置数据源 Druid-->
  <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
      <property name="url" value="${druid.url}"/>
      <property name="username" value="${druid.username}"/>
      <property name="password" value="${druid.password}"/>
      <property name="driverClassName" value="${druid.driverClassName}"/>
  </bean>
  
  <!-- 配置SqlSessionFactory -->
  <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
   <!-- configuration.xml的位置 -->
      <property name="configLocation" value="classpath:mybatis/configuration.xml"/>
      <!-- 引用数据源 -->
      <property name="dataSource" ref="dataSource"/>
      <!-- 扫描mapper.xml文件 -->
      <property name="mapperLocations" value="classpath:mybatis/mapper/*.mapper.xml"/>
      <property name="typeAliasesPackage" value="com.dxj.entity"/>
  </bean>
  
  <!-- mybatis的辅助配置 -->
  <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
   <!-- mybatis操作接口的位置 -->
      <property name="basePackage" value="com.dxj.mapper"/>
      <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
  </bean>
  
  <!-- 事务管理 -->
   <bean id="txManger" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
      <property name="dataSource" ref="dataSource"/>
  </bean>
  <tx:annotation-driven transaction-manager="txManger"/> 
</beans>

6.log4j.properties

log4j.rootLogger=debug,stdout,logfile
#console output
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.SimpleLayout
log4j.appender.stdout.PatternLayout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss}<-->%F<-->%p<-->%m%n 
#file output
log4j.appender.logfile=org.apache.log4j.FileAppender
log4j.appender.logfile.File=F:/logs/mybatis/log.log
log4j.appender.logfile.layout=org.apache.log4j.SimpleLayout
log4j.appender.logfile.PatternLayout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss}<-->%F<-->%p<-->%m%n

#mybatis log 
log4j.logger.com.ibatis=DEBUG
log4j.logger.com.ibatis.common.jdbc.SimpleDataSource=DEBUG
log4j.logger.com.ibatis.common.jdbc.ScriptRunner=DEBUG
log4j.logger.com.ibatis.sqlmap.engine.impl.SqlMapClientDelegate=DEBUG
log4j.logger.java.sql.Connection=DEBUG
log4j.logger.java.sql.Statement=DEBUG
log4j.logger.java.sql.PreparedStatement=DEBUG