idea插件代码生成工具EasyCode

ゞ浴缸里的玫瑰 2024-03-30 14:02 127阅读 0赞

#### idea插件代码生成工具EasyCode ####

*  1. EasyCode下载安装
 *  2. EasyCode配置模板
 *   *  2.1 配置路径
     *  2.2 配置文件
     *   *  2.2.1. controller.java
         *  2.2.2. entity.java
         *  2.2.3. mapper.java
         *  2.2.4. service.java
         *  2.2.5. serviceImpl.java
         *  2.2.6. mapper.xml
 *  3. 构建SpringBoot项目
 *   *  3.1 初始化数据库
     *  3.2 创建项目
     *  3.3 生成代码
     *  3.4 修改配置
     *   *  3.4.1. 修改application.yml
         *  3.4.2. application-dev.yml
         *  3.4.3. 修改MapperScan路径
         *  3.4.4. 修改pom文件
         *  3.4.5. 添加结果对象
 *  4. 测试验证
 *   *  4.1 目录结构
     *  4.2. 测试结果

## 1. EasyCode下载安装 ##

EasyCode是一款根据idea数据库连接自动生成Java代码，从controller，service，dao，mapper一整套的代码的idea插件。

首先下载安装easycode插件，idea分为在线安装与离线安装。  
1.在线安装：setting-plugin，搜索easycode，安装重启。

2.离线安装  
下载地址：[https://gitee.com/makejava/EasyCode/releases][https_gitee.com_makejava_EasyCode_releases]  
下载压缩包：EasyCode-1.2.3-RELEASE.zip  
通过idea离线安装该压缩包。

## 2. EasyCode配置模板 ##

### 2.1 配置路径 ###

配置路径：File --> Settings --> Other Settings --> EasyCode – > Template Settings  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzM3NTgzNjU1_size_16_color_FFFFFF_t_70]

### 2.2 配置文件 ###

#### 2.2.1. controller.java ####

##定义初始变量
    #set($tableName = $tool.append($tableInfo.name, "Controller"))
    ##设置回调
    $!callback.setFileName($tool.append($tableName, ".java"))
    $!callback.setSavePath($tool.append($tableInfo.savePath, "/controller"))
    ##拿到主键
    #if(!$tableInfo.pkColumn.isEmpty())
        #set($pk = $tableInfo.pkColumn.get(0))
    #end
    
    #if($tableInfo.savePackageName)package $!{
        tableInfo.savePackageName}.#{
        end}controller;
    
    import $!{
        tableInfo.savePackageName}.entity.$!{
        tableInfo.name};
    import $!{
        tableInfo.savePackageName}.service.$!{
        tableInfo.name}Service;
    import org.springframework.web.bind.annotation.*;
    import $!{
        tableInfo.savePackageName}.entity.Response;
    import java.util.List;
    
    import javax.annotation.Resource;
    
    /**
     * $!{tableInfo.comment}($!{tableInfo.name})控制层
     *
     * @author $!author
     * @since $!time.currTime()
     */
    @RestController
    @RequestMapping("/$!tool.firstLowerCase($tableInfo.name)")
    public class $!{
        tableName} {
        
        /**
         * 服务对象
         */
        @Resource
        private $!{
        tableInfo.name}Service $!tool.firstLowerCase($tableInfo.name)Service;
    
        /**
         * 通过主键查询单条数据
         *
         * @param $!tool.firstLowerCase($tableInfo.name) 参数对象
         * @return 单条数据
         */
        @RequestMapping(value = "get", method = RequestMethod.GET)
        public Response<$tableInfo.name> selectOne($tableInfo.name $!tool.firstLowerCase($tableInfo.name)) {
        
            $tableInfo.name result = $!{
        tool.firstLowerCase($tableInfo.name)}Service.selectById($!{
        tool.firstLowerCase($tableInfo.name)}.getId());
            if(result != null){
        
               return Response.createSuccessResponse("查询成功", result);
            }
            return Response.createErrorResponse("查询失败");
        }
        
        /**
         * 新增一条数据
         *
         * @param $!tool.firstLowerCase($tableInfo.name) 实体类
         * @return Response对象
         */
        @RequestMapping(value = "insert", method = RequestMethod.POST)
        public Response<$tableInfo.name> insert(@RequestBody $tableInfo.name $!tool.firstLowerCase($tableInfo.name)) {
        
            int result = $!{
        tool.firstLowerCase($tableInfo.name)}Service.insert($!tool.firstLowerCase($tableInfo.name));
            if (result > 0) {
        
               return Response.createSuccessResponse("新增成功", $!tool.firstLowerCase($tableInfo.name));
            }
            return Response.createErrorResponse("新增失败");
        }
        
    	/**
         * 批量新增
         *
         * @param $!tool.firstLowerCase($!{tableInfo.name})s 实例对象的集合
         * @return 影响行数
         */
        @RequestMapping(value = "batchInsert", method = RequestMethod.POST)
        public Response<Integer> batchInsert(@RequestBody List<$!{
        tableInfo.name}> $!tool.firstLowerCase($!{
        tableInfo.name})s) {
        
            int result = $!{
        tool.firstLowerCase($tableInfo.name)}Service.batchInsert($!tool.firstLowerCase($tableInfo.name)s);
            if (result > 0) {
        
               return Response.createSuccessResponse("新增成功", result);
            }
            return Response.createErrorResponse("新增失败");
        }
        
        /**
         * 修改一条数据
         *
         * @param $!tool.firstLowerCase($tableInfo.name) 实体类
         * @return Response对象
         */
        @RequestMapping(value = "update", method = RequestMethod.PUT)
        public Response<$tableInfo.name> update(@RequestBody $tableInfo.name $!tool.firstLowerCase($tableInfo.name)) {
        
            $tableInfo.name result = $!{
        tool.firstLowerCase($tableInfo.name)}Service.update($!tool.firstLowerCase($tableInfo.name));
            if (result != null) {
        
               return Response.createSuccessResponse("修改成功", result);
            }
            return Response.createErrorResponse("修改失败");
        }
    
        /**
         * 删除一条数据
         *
         * @param $!tool.firstLowerCase($tableInfo.name) 参数对象
         * @return Response对象
         */
        @RequestMapping(value = "delete", method = RequestMethod.DELETE)
        public Response<$tableInfo.name> delete($tableInfo.name $!tool.firstLowerCase($tableInfo.name)) {
        
            int result = $!{
        tool.firstLowerCase($tableInfo.name)}Service.deleteById($!{
        tool.firstLowerCase($tableInfo.name)}.getId());
            if (result > 0) {
        
               return Response.createSuccessResponse("删除成功", null);
            }
            return Response.createErrorResponse("删除失败");
        }
    
        /**
         * 查询全部
         *
         * @return Response对象
         */
        @RequestMapping(value = "selectAll", method = RequestMethod.GET)
        public Response<List<$tableInfo.name>> selectAll() {
        
            List<$tableInfo.name> $!tool.firstLowerCase($tableInfo.name)s = $!{
        tool.firstLowerCase($tableInfo.name)}Service.selectAll();
            if ($!tool.firstLowerCase($tableInfo.name)s != null) {
        
               return Response.createSuccessResponse("查询成功", $!tool.firstLowerCase($tableInfo.name)s);
            }
            return Response.createErrorResponse("查询失败");
        }
        
        /**
         * 通过实体作为筛选条件查询
         *
         * @return Response对象
         */
        @RequestMapping(value = "selectList", method = RequestMethod.GET)
        public Response<List<$tableInfo.name>> selectList($!{
        tableInfo.name} $!tool.firstLowerCase($!{
        tableInfo.name})) {
        
            List<$tableInfo.name> $!tool.firstLowerCase($tableInfo.name)s = $!{
        tool.firstLowerCase($tableInfo.name)}Service.selectList($!tool.firstLowerCase($!{
        tableInfo.name}));
            if ($!tool.firstLowerCase($tableInfo.name)s != null) {
        
               return Response.createSuccessResponse("查询成功", $!tool.firstLowerCase($tableInfo.name)s);
            }
            return Response.createErrorResponse("查询失败");
        }
    
        /**
         * 分页查询
         *
         * @param start 偏移
         * @param limit 条数
         * @return Response对象
         */
        @RequestMapping(value = "selectPage", method = RequestMethod.GET)
        public Response<List<$tableInfo.name>> selectPage(Integer start, Integer limit) {
        
            List<$tableInfo.name> $!tool.firstLowerCase($tableInfo.name)s = $!{
        tool.firstLowerCase($tableInfo.name)}Service.selectPage(start, limit);
            if ($!tool.firstLowerCase($tableInfo.name)s != null) {
        
               return Response.createSuccessResponse("查询成功", $!tool.firstLowerCase($tableInfo.name)s);
            }
            return Response.createErrorResponse("查询失败");
        }
        
    }

#### 2.2.2. entity.java ####

##引入宏定义
    $!define
    
    ##使用宏定义设置回调（保存位置与文件后缀）
    #save("/entity", ".java")
    
    ##使用宏定义设置包后缀
    #setPackageSuffix("entity")
    
    ##使用全局变量实现默认包导入
    $!autoImport
    import java.io.Serializable;
    
    ##使用宏定义实现类注释信息
    #tableComment("实体类")
    public class $!{
        tableInfo.name} implements Serializable {
        
        private static final long serialVersionUID = $!tool.serial();
    #foreach($column in $tableInfo.fullColumn)
        #if(${
        column.comment})/**
        * ${column.comment}
        */#end
    
        private $!{
        tool.getClsNameByFullName($column.type)} $!{
        column.name};
    #end
    
    #foreach($column in $tableInfo.fullColumn)
    ##使用宏定义实现get,set方法
        #getSetMethod($column)
    #end
    
        @Override
        public String toString(){
        
            return "$tableInfo.name {" +
            #foreach($column in $tableInfo.fullColumn)
        "$column.name : " + $column.name + ", " +
            #end        
    '}';
        }
    }

#### 2.2.3. mapper.java ####

##定义初始变量
    #set($tableName = $tool.append($tableInfo.name, "Mapper"))
    ##设置回调
    $!callback.setFileName($tool.append($tableName, ".java"))
    $!callback.setSavePath($tool.append($tableInfo.savePath, "/mapper"))
    
    ##拿到主键
    #if(!$tableInfo.pkColumn.isEmpty())
        #set($pk = $tableInfo.pkColumn.get(0))
    #end
    
    #if($tableInfo.savePackageName)package $!{
        tableInfo.savePackageName}.#{
        end}mapper;
    
    import $!{
        tableInfo.savePackageName}.entity.$!{
        tableInfo.name};
    import org.apache.ibatis.annotations.Param;
    import java.util.List;
    import java.util.Map;
    
    /**
     * $!{tableInfo.comment}($!{tableInfo.name})表数据库访问层
     *
     * @author $!author
     * @since $!time.currTime()
     */
    public interface $!{
        tableName} {
        
    
        /**
         * 通过ID查询单条数据
         *
         * @param $!pk.name 主键
         * @return 实例对象
         */
        $!{
        tableInfo.name} selectById($!pk.shortType $!pk.name);
    	
        /**
         * 分页查询
         *
         * @param start 查询起始位置
         * @param limit 查询条数
         * @return 对象列表
         */
        List<$!{
        tableInfo.name}> selectPage(@Param("start") int start, @Param("limit") int limit);
    
        /**
         * 查询全部
         *
         * @return 对象列表
         */
        List<$!{
        tableInfo.name}> selectAll();
        
        /**
         * 通过实体作为筛选条件查询
         *
         * @param $!tool.firstLowerCase($!{tableInfo.name}) 实例对象
         * @return 对象列表
         */
        List<$!{
        tableInfo.name}> selectList($!{
        tableInfo.name} $!tool.firstLowerCase($!{
        tableInfo.name}));
    
        /**
         * 新增数据
         *
         * @param $!tool.firstLowerCase($!{tableInfo.name}) 实例对象
         * @return 影响行数
         */
        int insert($!{
        tableInfo.name} $!tool.firstLowerCase($!{
        tableInfo.name}));
    	
    	/**
         * 批量新增
         *
         * @param $!tool.firstLowerCase($!{tableInfo.name})s 实例对象的集合
         * @return 影响行数
         */
    	int batchInsert(List<$!{
        tableInfo.name}> $!tool.firstLowerCase($!{
        tableInfo.name})s);
    	
        /**
         * 修改数据
         *
         * @param $!tool.firstLowerCase($!{tableInfo.name}) 实例对象
         * @return 影响行数
         */
        int update($!{
        tableInfo.name} $!tool.firstLowerCase($!{
        tableInfo.name}));
    
        /**
         * 通过主键删除数据
         *
         * @param $!pk.name 主键
         * @return 影响行数
         */
        int deleteById($!pk.shortType $!pk.name);
    
        /**
         * 查询总数据数
         *
         * @return 数据总数
         */
        int count();
    }

#### 2.2.4. service.java ####

##定义初始变量
    #set($tableName = $tool.append($tableInfo.name, "Service"))
    ##设置回调
    $!callback.setFileName($tool.append($tableName, ".java"))
    $!callback.setSavePath($tool.append($tableInfo.savePath, "/service"))
    
    ##拿到主键
    #if(!$tableInfo.pkColumn.isEmpty())
        #set($pk = $tableInfo.pkColumn.get(0))
    #end
    
    #if($tableInfo.savePackageName)package $!{
        tableInfo.savePackageName}.#{
        end}service;
    
    import $!{
        tableInfo.savePackageName}.entity.$!{
        tableInfo.name};
    import java.util.List;
    import java.util.Map;
    
    /**
     * $!{tableInfo.comment}($!{tableInfo.name})表服务接口
     *
     * @author $!author
     * @since $!time.currTime()
     */
    public interface $!{
        tableName} {
        
    
        /**
         * 通过ID查询单条数据
         *
         * @param $!pk.name 主键
         * @return 实例对象
         */
        $!{
        tableInfo.name} selectById($!pk.shortType $!pk.name);
    
        /**
         * 分页查询
         *
         * @param start 查询起始位置
         * @param limit 查询条数
         * @return 对象列表
         */
        List<$!{
        tableInfo.name}> selectPage(int start, int limit);
    
        /**
         * 查询全部
         *
         * @return 对象列表
         */
        List<$!{
        tableInfo.name}> selectAll();
        
        /**
         * 通过实体作为筛选条件查询
         *
         * @param $!tool.firstLowerCase($!{tableInfo.name}) 实例对象
         * @return 对象列表
         */
        List<$!{
        tableInfo.name}> selectList($!{
        tableInfo.name} $!tool.firstLowerCase($!{
        tableInfo.name}));
    
        /**
         * 新增数据
         *
         * @param $!tool.firstLowerCase($!{tableInfo.name}) 实例对象
         * @return 影响行数
         */
        int insert($!{
        tableInfo.name} $!tool.firstLowerCase($!{
        tableInfo.name}));
    	
    	/**
         * 批量新增
         *
         * @param $!tool.firstLowerCase($!{tableInfo.name})s 实例对象的集合
         * @return 影响行数
         */
    	int batchInsert(List<$!{
        tableInfo.name}> $!tool.firstLowerCase($!{
        tableInfo.name})s);
    	
        /**
         * 修改数据
         *
         * @param $!tool.firstLowerCase($!{tableInfo.name}) 实例对象
         * @return 修改
         */
        $!{
        tableInfo.name} update($!{
        tableInfo.name} $!tool.firstLowerCase($!{
        tableInfo.name}));
    
        /**
         * 通过主键删除数据
         *
         * @param $!pk.name 主键
         * @return 影响行数
         */
        int deleteById($!pk.shortType $!pk.name);
        
        /**
         * 查询总数据数
         *
         * @return 数据总数
         */
        int count();
    }

#### 2.2.5. serviceImpl.java ####

##定义初始变量
    #set($tableName = $tool.append($tableInfo.name, "ServiceImpl"))
    ##设置回调
    $!callback.setFileName($tool.append($tableName, ".java"))
    $!callback.setSavePath($tool.append($tableInfo.savePath, "/service/impl"))
    
    ##拿到主键
    #if(!$tableInfo.pkColumn.isEmpty())
        #set($pk = $tableInfo.pkColumn.get(0))
    #end
    
    #if($tableInfo.savePackageName)package $!{
        tableInfo.savePackageName}.#{
        end}service.impl;
    
    import $!{
        tableInfo.savePackageName}.entity.$!{
        tableInfo.name};
    import $!{
        tableInfo.savePackageName}.mapper.$!{
        tableInfo.name}Mapper;
    import $!{
        tableInfo.savePackageName}.service.$!{
        tableInfo.name}Service;
    import org.springframework.stereotype.Service;
    
    import javax.annotation.Resource;
    import java.util.List;
    import java.util.Map;
    
    /**
     * $!{tableInfo.comment}($!{tableInfo.name}表)服务实现类
     *
     * @author $!author
     * @since $!time.currTime()
     */
    @Service("$!tool.firstLowerCase($!{tableInfo.name})Service")
    public class $!{
        tableName} implements $!{
        tableInfo.name}Service {
        
        @Resource
        private $!{
        tableInfo.name}Mapper $!tool.firstLowerCase($!{
        tableInfo.name})Mapper;
    
        /**
         * 通过ID查询单条数据
         *
         * @param $!pk.name 主键
         * @return 实例对象
         */
        @Override
        public $!{
        tableInfo.name} selectById($!pk.shortType $!pk.name) {
        
            return this.$!{
        tool.firstLowerCase($!{
        tableInfo.name})}Mapper.selectById($!pk.name);
        }
    
        /**
         * 分页查询
         *
         * @param start 查询起始位置
         * @param limit 查询条数
         * @return 对象列表
         */
        @Override
        public List<$!{
        tableInfo.name}> selectPage(int start, int limit) {
        
            return this.$!{
        tool.firstLowerCase($!{
        tableInfo.name})}Mapper.selectPage(start, limit);
        }
    
        /**
         * 查询所有
         *
         * @return 实例对象的集合
         */
         @Override
         public List<$!{
        tableInfo.name}> selectAll() {
        
            return this.$!{
        tool.firstLowerCase($!{
        tableInfo.name})}Mapper.selectAll();
         }
         
        /**
         * 根据条件查询
         *
         * @return 实例对象的集合
         */
        @Override
        public List<$!{
        tableInfo.name}> selectList($!{
        tableInfo.name} $!{
        tool.firstLowerCase($!{
        tableInfo.name})}) {
        
            return this.$!{
        tool.firstLowerCase($!{
        tableInfo.name})}Mapper.selectList($!{
        tool.firstLowerCase($!{
        tableInfo.name})});
        }
        
        /**
         * 新增数据
         *
         * @param $!tool.firstLowerCase($!{tableInfo.name}) 实例对象
         * @return 实例对象
         */
        @Override
        public int insert($!{
        tableInfo.name} $!tool.firstLowerCase($!{
        tableInfo.name})) {
        
            return this.$!{
        tool.firstLowerCase($!{
        tableInfo.name})}Mapper.insert($!tool.firstLowerCase($!{
        tableInfo.name}));
        }
    
        /**
         * 批量新增
         *
         * @param $!tool.firstLowerCase($!{tableInfo.name})s 实例对象的集合
         * @return 生效的条数
         */
        @Override
        public int batchInsert(List<$!{
        tableInfo.name}> $!tool.firstLowerCase($!{
        tableInfo.name})s) {
        
            return this.$!{
        tool.firstLowerCase($!{
        tableInfo.name})}Mapper.batchInsert($!tool.firstLowerCase($!{
        tableInfo.name})s);
        }
    
        /**
         * 修改数据
         *
         * @param $!tool.firstLowerCase($!{tableInfo.name}) 实例对象
         * @return 实例对象
         */
        @Override
        public $!{
        tableInfo.name} update($!{
        tableInfo.name} $!tool.firstLowerCase($!{
        tableInfo.name})) {
        
            this.$!{
        tool.firstLowerCase($!{
        tableInfo.name})}Mapper.update($!tool.firstLowerCase($!{
        tableInfo.name}));
            return this.selectById($!{
        tool.firstLowerCase($!{
        tableInfo.name})}.get$!tool.firstUpperCase($pk.name)());
        }
    
        /**
         * 通过主键删除数据
         *
         * @param $!pk.name 主键
         * @return 是否成功
         */
        @Override
        public int deleteById($!pk.shortType $!pk.name) {
        
            return this.$!{
        tool.firstLowerCase($!{
        tableInfo.name})}Mapper.deleteById($!pk.name);
        }
        
        /**
         * 查询总数据数
         *
         * @return 数据总数
         */
         @Override
         public int count(){
        
            return this.$!{
        tool.firstLowerCase($!{
        tableInfo.name})}Mapper.count();
         }
    }

#### 2.2.6. mapper.xml ####

##引入mybatis支持
    $!mybatisSupport
    
    ##设置保存名称与保存位置
    $!callback.setFileName($tool.append($!{
        tableInfo.name}, "Mapper.xml"))
    $!callback.setSavePath($tool.append($modulePath, "/src/main/resources/mapper"))
    
    ##拿到主键
    #if(!$tableInfo.pkColumn.isEmpty())
        #set($pk = $tableInfo.pkColumn.get(0))
    #end
    
    <?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="$!{tableInfo.savePackageName}.mapper.$!{tableInfo.name}Mapper">
        
        <resultMap type="$!{tableInfo.savePackageName}.entity.$!{tableInfo.name}" id="$!{tableInfo.name}Map">
    #foreach($column in $tableInfo.fullColumn)
            <result property="$!column.name" column="$!column.obj.name" jdbcType="$!column.ext.jdbcType"/>
    #end
        </resultMap>
        
        
        <sql id="Base_Column_List">
            #allSqlColumn()
        </sql>
        
        
        <select id="selectById" resultMap="$!{tableInfo.name}Map">
            select
              <include refid="Base_Column_List" />
            from $!tableInfo.obj.name
            where $!pk.obj.name = #{
        $!pk.name}
        </select>
    
        
        <select id="selectPage" resultMap="$!{tableInfo.name}Map">
            select
            <include refid="Base_Column_List" />
            from $!tableInfo.obj.name
            limit #{
        start},#{
        limit}
        </select>
    
        
        <select id="selectAll" resultMap="$!{tableInfo.name}Map">
            select
            <include refid="Base_Column_List" />
            from $!tableInfo.obj.name
        </select>
    
        
        <select id="selectList" resultMap="$!{tableInfo.name}Map">
            select
            <include refid="Base_Column_List" />
            from $!tableInfo.obj.name
            <where>
            #foreach($column in $tableInfo.fullColumn)
                <if test="$!column.name != null#if($column.type.equals("java.lang.String")) and $!column.name != ''#end">
                    and $!column.obj.name = #{
        $!column.name}
                </if>
            #end
            </where>
        </select>
    
        
        <insert id="insert" keyProperty="$!pk.name" useGeneratedKeys="true">
            insert into $!{
        tableInfo.obj.name}(#foreach($column in $tableInfo.fullColumn)$!column.obj.name#if($velocityHasNext), #end#end)
            values ( #foreach($column in $tableInfo.fullColumn)#{
        $!{
        column.name}}#if($velocityHasNext), #end#end)
        </insert>
        
        
        <insert id="batchInsert">
            insert into $!{
        tableInfo.obj.name}(#foreach($column in $tableInfo.fullColumn)$!column.obj.name#if($velocityHasNext), #end#end)
            values 
            <foreach collection="$!tool.firstLowerCase($!{tableInfo.name})s" item="item" index="index" separator=",">
            (
                #foreach($column in $tableInfo.fullColumn)
                #{
        item.$!{
        column.name}}#if($velocityHasNext), #end
    #end
             )
             </foreach>
        </insert>
    
        
        <update id="update">
            update $!{
        tableInfo.obj.parent.name}.$!{
        tableInfo.obj.name}
            <set>
            #foreach($column in $tableInfo.otherColumn)
                <if test="$!column.name != null#if($column.type.equals("java.lang.String")) and $!column.name != ''#end">
                    $!column.obj.name = #{
        $!column.name},
                </if>
            #end
            </set>
            where $!pk.obj.name = #{
        $!pk.name}
        </update>
    
        
        <delete id="deleteById">
            delete from $!{
        tableInfo.obj.name} where $!pk.obj.name = #{
        $!pk.name}
        </delete>
        
        
        <select id="count" resultType="int">
            select count(*) from $!{
        tableInfo.obj.name}
        </select>
    </mapper>

## 3. 构建SpringBoot项目 ##

### 3.1 初始化数据库 ###

-- 用户测试
    CREATE TABLE `user` (
      `id` int(32) NOT NULL AUTO_INCREMENT,
      `userName` varchar(32) NOT NULL,
      `passWord` varchar(50) NOT NULL,
      `realName` varchar(32) DEFAULT NULL,
      PRIMARY KEY (`id`)
    ) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8;
    
    INSERT INTO `category`.`user`(`id`, `userName`, `passWord`, `realName`) VALUES (3, '朱荣靖', '123', 'Jess');
    INSERT INTO `category`.`user`(`id`, `userName`, `passWord`, `realName`) VALUES (4, '王小二', '456', 'wang');
    
    select * from user;

### 3.2 创建项目 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzM3NTgzNjU1_size_16_color_FFFFFF_t_70 1]![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzM3NTgzNjU1_size_16_color_FFFFFF_t_70 2]![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzM3NTgzNjU1_size_16_color_FFFFFF_t_70 3]

### 3.3 生成代码 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzM3NTgzNjU1_size_16_color_FFFFFF_t_70 4]

### 3.4 修改配置 ###

#### 3.4.1. 修改application.yml ####

spring:
      profiles:
        active: dev

#### 3.4.2. application-dev.yml ####

server:
      port: 8080
    
    spring:
      datasource:
        username: root
        password: 123456
        url: jdbc:mysql://localhost:3306/category?useUnicode=true&characterEncoding=utf-8&useSSL=true&serverTimezone=UTC
        driver-class-name: com.mysql.jdbc.Driver
    
    mybatis:
      mapper-locations: classpath:mapper/*Mapper.xml
      type-aliases-package: com.example.category
    
    #showSql
    logging:
      level:
        com:
          example:
            mapper : debug

#### 3.4.3. 修改MapperScan路径 ####

package com.example.category;
    
    import org.mybatis.spring.annotation.MapperScan;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    
    @SpringBootApplication
    @MapperScan("com.example.category.mapper")
    public class CategoryApplication {
        
    
        public static void main(String[] args) {
        
            SpringApplication.run( CategoryApplication.class, args );
        }
    
    }

#### 3.4.4. 修改pom文件 ####

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
        <modelVersion>4.0.0</modelVersion>
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.5.0</version>
            <relativePath/> 
        </parent>
        <groupId>com.example</groupId>
        <artifactId>category</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <name>category</name>
        <description>Demo project for Spring Boot</description>
        <properties>
            <java.version>1.8</java.version>
        </properties>
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-jdbc</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
            <dependency>
                <groupId>org.mybatis.spring.boot</groupId>
                <artifactId>mybatis-spring-boot-starter</artifactId>
                <version>2.1.4</version>
            </dependency>
    
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <scope>runtime</scope>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>
        </dependencies>
    
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
            </plugins>
        </build>
    
    </project>

#### 3.4.5. 添加结果对象 ####

Response

package com.example.category.entity;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Component;
    
    /**
     * @author zrj
     * @date 2021/6/2
     * @since V1.0
     **/
    @Component
    public class Response<T> {
        
    
        private static ResponseCode responseCode;
        /**
         * 提示消息
         */
        private String message;
    
        /**
         * 具体返回的数据
         */
        private T data;
    
        /**
         * 状态码
         */
        private String code;
    
        private Response(String code, String message, T data) {
        
            this.message = message;
            this.code = code;
            this.data = data;
        }
    
        private Response(String code, String msg) {
        
            this.message = msg;
            this.code = code;
        }
    
        @Autowired
        public Response(ResponseCode responseCode) {
        
            Response.responseCode = responseCode;
        }
    
        /**
         * 返回成功Response对象
         *
         * @param successMessage 成功提示信息
         * @param data           需要返回的数据
         * @return 成功信息
         */
        public static <T> Response<T> createSuccessResponse(String successMessage, T data) {
        
            return new Response<>( responseCode.getSuccessCode(), successMessage, data );
        }
    
    
        /**
         * 返回错误Response对象
         *
         * @param errorMessage 错误信息
         * @return 错误信息
         */
        public static <T> Response<T> createErrorResponse(String errorMessage) {
        
            return new Response<>( responseCode.getErrorCode(), errorMessage );
        }
    
        public Response() {
        
        }
    
        /**
         * 返回未登录状态码
         *
         * @param message 提示信息
         * @return Response
         */
        public static <T> Response<T> createUnLoginResponse(String message) {
        
            return new Response<>( responseCode.getAuthErrorCode(), message );
        }
    
        public String getMessage() {
        
            return message;
        }
    
        public void setMessage(String message) {
        
            this.message = message;
        }
    
        public T getData() {
        
            return data;
        }
    
        public void setData(T data) {
        
            this.data = data;
        }
    
        public String getCode() {
        
            return code;
        }
    
        public void setCode(String code) {
        
            this.code = code;
        }
    
    }

ResponseCode

package com.example.category.entity;
    
    import org.springframework.stereotype.Component;
    
    /**
     * @author zrj
     * @date 2021/6/2
     * @since V1.0
     **/
    @Component
    public class ResponseCode {
        
        private String successCode = "200";
    
        private String errorCode = "500";
    
        private String authErrorCode = "300";
    
        public String getSuccessCode() {
        
            return successCode;
        }
    
        public void setSuccessCode(String successCode) {
        
            this.successCode = successCode;
        }
    
        public String getErrorCode() {
        
            return errorCode;
        }
    
        public void setErrorCode(String errorCode) {
        
            this.errorCode = errorCode;
        }
    
        public String getAuthErrorCode() {
        
            return authErrorCode;
        }
    
        public void setAuthErrorCode(String authErrorCode) {
        
            this.authErrorCode = authErrorCode;
        }
    }

## 4. 测试验证 ##

### 4.1 目录结构 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzM3NTgzNjU1_size_16_color_FFFFFF_t_70 5]

### 4.2. 测试结果 ###

![在这里插入图片描述][d510ad42cdc5454b9233785d0d4547be.png]

[https_gitee.com_makejava_EasyCode_releases]: https://gitee.com/makejava/EasyCode/releases
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzM3NTgzNjU1_size_16_color_FFFFFF_t_70]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/30/dd13f5941bdd4261994110fe7f663af3.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzM3NTgzNjU1_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20210602214523942.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzM3NTgzNjU1,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzM3NTgzNjU1_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20210602214551325.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzM3NTgzNjU1,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzM3NTgzNjU1_size_16_color_FFFFFF_t_70 3]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/30/5a6199cfa5784c5d96ab020ae6c68b58.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzM3NTgzNjU1_size_16_color_FFFFFF_t_70 4]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/30/c4122e68012740259222c366e2da4a05.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzM3NTgzNjU1_size_16_color_FFFFFF_t_70 5]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/30/c6fa6ae9564c49e2affbdf7f3f4f6820.png
[d510ad42cdc5454b9233785d0d4547be.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/30/8c767c85870b46be8e0b0f7ff9da6fab.png