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Maven多模块项目搭建+SSM框架整合（二、Dao层添加测试，服务层添加）

song先生 2017-08-09 14:39:23 浏览 17025
song先生
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Spring+SpringMVC+Mybatis整合篇

在这里推荐大家有事儿没事逛一下GitHub总会有很多信息好玩的项目被你发现.

进入正题

一、添加依赖

添加相关依赖，在这里某些依赖可能用不上（可以注释掉），但是希望有精力的话都去了解一下，许多在工作中都会用上，学无止境~
图片描述

<?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>com.songci</groupId>
    <artifactId>mytest-root</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>
    <modules>
        <module>mytest-model</module>
        <module>mytest-dao</module>
        <module>mytest-service</module>
        <module>mytest-web</module>
    </modules>

    <!--添加依赖-->
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <spring.version>4.0.6.RELEASE</spring.version>
        <druid.version>1.0.5</druid.version>
        <mysql.connector.version>5.1.30</mysql.connector.version>
        <mybatis.version>3.2.7</mybatis.version>
        <mybatis.spring.version>1.2.2</mybatis.spring.version>
        <slf4j.version>1.6.6</slf4j.version>
        <log4j.version>1.2.12</log4j.version>
        <jackson.version>1.9.13</jackson.version>
        <jstl.version>1.2</jstl.version>
        <commons.fileupload.version>1.3.1</commons.fileupload.version>
        <commons.codec.version>1.9</commons.codec.version>
        <commons.net.version>3.3</commons.net.version>
        <httpclient.version>4.1.2</httpclient.version>
        <aspectj.version>1.6.12</aspectj.version>
        <okhttp.version>3.3.0</okhttp.version>
        <commons-dbcp.version>1.4</commons-dbcp.version>
        <lombok.version>1.16.18</lombok.version>
        <gson.version>2.2.4</gson.version>
    </properties>
    <dependencies>
        <!-- 单元测试 -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>

        <!-- spring核心包 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!-- SpringMVC -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!-- Bean注入 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!-- 包扫描 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!-- 切面编程 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!-- 事务管理 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!-- ORM 框架 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <!-- 加入spring测试依赖包 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <!-- mybatis包 -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>${mybatis.version}</version>
        </dependency>
        <!-- spring mybatis整合包 -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>${mybatis.spring.version}</version>
        </dependency>

        <!-- mysql-connector -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql.connector.version}</version>
        </dependency>

        <!-- 阿里巴巴 数据库连接池 -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>${druid.version}</version>
        </dependency>

        <!-- jackson JSON支持 -->
        <dependency>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-mapper-asl</artifactId>
            <version>${jackson.version}</version>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.1.0</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.1.0</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
            <version>2.1.0</version>
        </dependency>

        <!-- log4j包 -->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>${log4j.version}</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>${slf4j.version}</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>${slf4j.version}</version>
        </dependency>

        <!-- jstl -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>${jstl.version}</version>
        </dependency>

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

        <!-- start apache -->
        <dependency>
            <groupId>commons-fileupload</groupId>
            <artifactId>commons-fileupload</artifactId>
            <version>${commons.fileupload.version}</version>
        </dependency>
        <!-- HTTP请求 -->
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>${httpclient.version}</version>
        </dependency>
        <dependency>
            <groupId>commons-codec</groupId>
            <artifactId>commons-codec</artifactId>
            <version>${commons.codec.version}</version>
        </dependency>

        <dependency>
            <groupId>commons-net</groupId>
            <artifactId>commons-net</artifactId>
            <version>${commons.net.version}</version>
        </dependency>

        <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>1.1.3</version>
        </dependency>
        <dependency>
            <groupId>commons-collections</groupId>
            <artifactId>commons-collections</artifactId>
            <version>3.2.1</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/commons-dbcp/commons-dbcp -->
        <dependency>
            <groupId>commons-dbcp</groupId>
            <artifactId>commons-dbcp</artifactId>
            <version>${commons-dbcp.version}</version>
        </dependency>
        <!-- aspectjweaver -->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>${aspectj.version}</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjrt</artifactId>
            <version>${aspectj.version}</version>
        </dependency>
        <!--<dependency>-->
            <!--<groupId>com.squareup.okhttp3</groupId>-->
            <!--<artifactId>okhttp</artifactId>-->
            <!--<version>${okhttp.version}</version>-->
        <!--</dependency>-->
        <!--<dependency>-->
            <!--<groupId>org.projectlombok</groupId>-->
            <!--<artifactId>lombok</artifactId>-->
            <!--<version>${lombok.version}</version>-->
            <!--<scope>provided</scope>-->
        <!--</dependency>-->
        <!--<dependency>-->
            <!--<groupId>com.google.code.gson</groupId>-->
            <!--<artifactId>gson</artifactId>-->
            <!--<version>${gson.version}</version>-->
        <!--</dependency>-->
        <!--<dependency>-->
            <!--<groupId>org.sitemesh</groupId>-->
            <!--<artifactId>sitemesh</artifactId>-->
            <!--<version>3.0.0</version>-->
        <!--</dependency>-->
        <!--<!–Shiro–>-->
        <!--<dependency>-->
            <!--<groupId>org.apache.shiro</groupId>-->
            <!--<artifactId>shiro-core</artifactId>-->
            <!--<version>1.3.2</version>-->
        <!--</dependency>-->
        <!-- dubbo -->
        <!--<dependency>-->
        <!--<groupId>com.alibaba</groupId>-->
        <!--<artifactId>dubbo</artifactId>-->
        <!--<version>2.5.3</version>-->
        <!--<exclusions>-->
        <!--<exclusion>-->
        <!--<artifactId>spring</artifactId>-->
        <!--<groupId>org.springframework</groupId>-->
        <!--</exclusion>-->
        <!--</exclusions>-->
        <!--</dependency>-->

        <!--<dependency>-->
        <!--<groupId>org.apache.zookeeper</groupId>-->
        <!--<artifactId>zookeeper</artifactId>-->
        <!--<version>3.3.3</version>-->
        <!--</dependency>-->
        <!--<dependency>-->
        <!--<groupId>com.github.sgroschupf</groupId>-->
        <!--<artifactId>zkclient</artifactId>-->
        <!--<version>0.1</version>-->
        <!--</dependency>-->
        <!--<!– redis支持 –>-->
        <!--<dependency>-->
        <!--<groupId>org.springframework.data</groupId>-->
        <!--<artifactId>spring-data-redis</artifactId>-->
        <!--<version>1.0.2.RELEASE</version>-->
        <!--</dependency>-->

        <!--<dependency>-->
        <!--<groupId>redis.clients</groupId>-->
        <!--<artifactId>jedis</artifactId>-->
        <!--<version>2.1.0</version>-->
        <!--</dependency>-->
    </dependencies>

</project>

二、下载相关依赖Jar

只要点击install就会帮你下载相关依赖并放到本地仓库
图片描述

三、创建相关类和映射文件

model

图片描述
图片描述

创建Student类
图片描述

package com.songci.mytest_one.model;

/**
 * Created by songl on 2017/8/8.
 */
public class Student {
     private Integer id;
     private String name;//姓名
     private Boolean sex;//性别
     private String address;//地址

    public Integer getId(){return id;}
    public String getName(){return  name;}
    public Boolean getSex(){return sex;}
    public String getAddress(){return address;}
    public void setId(Integer id){this.id = id;}
    public void setName(String name){this.name = name;}
    public void setSex(Boolean sex){this.sex = sex;}
    public void setAddress(String address){this.address = address;}

    @Override
    public String toString() {
        return "Student : id:"+this.id+" name:"+this.name+" sex:"+this.sex+" address:"+this.address;
    }
}

dao

然后在mytest-dao下创建包package com.songci.mytest_one.dao并在该包下创建StudentDao和base这个包,在base包下创建baseDao
图片描述

定义BaseDao

package com.songci.mytest_one.dao.base;

import java.util.List;

/**
 * Created by songl on 2017/8/8.
 */
public interface BaseDao<T> {
    public Boolean insert(T var);
    public Boolean delete(T var);
    public Boolean update(T var);
    public List<T> select(T var);
}

StudentDao继承BaseDao其他方法可以根据需求再添加

package com.songci.mytest_one.dao;

import com.songci.mytest_one.dao.base.BaseDao;
import com.songci.mytest_one.model.Student;
import org.springframework.stereotype.Repository;

import java.util.List;

/**
 * Created by songl on 2017/8/8.
 */
@Repository
public interface  StudentDao extends BaseDao<Student> {
}

图片描述

StudentMapper.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.songci.mytest_one.dao.StudentDao">
    <insert id="insert" >
        INSERT t_student(id,name,sex,address) VALUES (#{id},#{name},#{sex},#{address})
    </insert>
    <delete id="delete">
        DELETE FROM t_student WHERE id=#{id}
    </delete>
    <update id="update">
        UPDATE t_student
        <trim prefix="SET" suffixOverrides=",">
            <if test="name!= null and name !='' and name != 'null'">name=#{name},</if>
            <if test="sex!= null ">sex=#{sex},</if>
            <if test="address!= null and address !='' and address != 'null'">address=#{address}</if>
        </trim>
        WHERE id=#{id} ;
    </update>
    <select id="select" resultType="Student">
        SELECT * FROM t_student
        <trim prefix="WHERE" prefixOverrides="AND">
            <if test="id!= null and id !='' ">id=#{id}</if>
            <if test="name!= null and name !='' and name != 'null'">AND name=#{name}</if>
            <if test="sex!= null ">AND sex=#{sex}</if>
            <if test="address!= null and address !='' and address != 'null'">AND address=#{address}</if>
        </trim>
    </select>
</mapper>

service

图片描述

创建StudentService接口

package com.songci.mytest_one.service;

import com.songci.mytest_one.model.Student;

import java.util.List;

/**
 * Created by songl on 2017/8/8.
 */
public interface StudentService {
    /**
     * 添加学生
     * @param student
     * @return
     */
    Boolean addStudent(Student student);

    /**
     * 根据ID删除学生
     * @param id
     * @return
     */
    Boolean deleteStudentById(Integer id);

    /**
     * 根据ID修改学生信息
     * @param student
     * @return
     */
    Boolean updateStudentById(Student student);

    /**
     * 按条件查找所有学生
     * @param student
     * @return
     */
    List<Student> findAllStudent(Student student);

}

创建实现类StudentServiceImpl

package com.songci.mytest_one.service.impl;

import com.songci.mytest_one.dao.StudentDao;
import com.songci.mytest_one.model.Student;
import com.songci.mytest_one.service.StudentService;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.List;

/**
 * Created by songl on 2017/8/8.
 */
@Service("StudentService")
public class StudentServiceImpl implements StudentService{
    @Resource
    private StudentDao studentDao;
    public Boolean addStudent(Student student) {
        return studentDao.insert(student);
    }

    public Boolean deleteStudentById(Integer id) {
        Student student=new Student();
        student.setId(id);
        return studentDao.delete(student);
    }

    public Boolean updateStudentById(Student student) {
        return studentDao.update(student);
    }

    public List<Student> findAllStudent(Student student) {
        return studentDao.select(student);
    }
}

下一篇Maven-maven多模块项目搭建+SSM框架整合（三、配置文件添加，服务层测试）

相关代码在GitHub上，包括数据库sql文件

GitHub地址:https://github.com/iamsongci/mytest_one

将持续更新 ~~~

未完待续~~~

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热门评论

你好,我想问一下https://img.mukewang.com/5ac98fbc00014b8303110335.jpg里面的mytest-root没有呀 这个是哪个配置没有配置吗

创建 实现学生类那里是不是写错了。  

  删除学生的方法返回的是boolean 值。 而dao 层接口返回的确是Intger

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