IDEA必备开发神器之EasyCode-编程学习网

1、打开IntelliJ IDEA 新建一个maven工程

2、选择工程存放目录

3、下载安装EasyCode插件

file->settings->plugins 搜索Easy Code

搜索到后点击Install 我这里安装过了安装完成会让你重启IDEA。

如何判断是否安装成功 file->settings->Other settings 看是否有Easy Code这个选项

4、引入Easy Code模板（可以根据个人情况定制也可以使用默认的）

5、创建数据库，数据表

6、配置数据源（需要指定数据库名称，要生成数据表）

点击IDEA右侧的Datbase->点击上方的加号->选择Data Source.->Mysql

7、配置数据源

注意：连接方式需要采用mysql8的连接方式，不然可能连接失败jdbc:mysql://localhost:3306/table?useUnicode=true&characterEncoding=utf-8&serverTimezone=UTC&useSSL=false

8、连接成功如图所示

9、引入springboot的相关pom.xml依赖


<dependencies>
        <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>1.3.2</version>
        </dependency>
         <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.38</version>
        </dependency>
    </dependencies>

需要用到mybatis的启动器，所以也一起引用

10、打开Easy Code插件选要生成的entity,controller,service，serviceimpl,dao

右击表名->Easy Code->Generate Code

Module：当前项目模块

package:生成代码存放包的位置

Template:生成的模板

11、勾选All表示生成所有，勾选禁止提示，防止弹出很多个提示信息，点击OK

12、生成模板

entity.java代码：


##引入宏定义
$!define
$!init
##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;
import lombok.Data;
##使用宏定义实现类注释信息
#tableComment("实体类")
@Data
public class $!{tableInfo.name} implements Serializable {
    private static final long serialVersionUID = $!tool.serial();
#foreach($column in $tableInfo.fullColumn)
    #if(${column.comment})#end
 
    private $!{tool.getClsNameByFullName($column.type)} $!{column.name};
#end
}

controller接口：controller.java代码如下：


##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 lombok.extern.slf4j.Slf4j;
import com.github.pagehelper.PageInfo;
import $!{tableInfo.savePackageName}.response.PageResult;
import $!{tableInfo.savePackageName}.response.Result;
import $!{tableInfo.savePackageName}.response.StatusCode;
import $!{tableInfo.savePackageName}.entity.$!{tableInfo.name};
import $!{tableInfo.savePackageName}.service.$!{tableInfo.name}Service;
import org.springframework.web.bind.annotation.*;
import org.springframework.util.CollectionUtils;
import javax.annotation.Resource;
import java.util.List;
import java.util.Objects;
 

@RestController
@Slf4j
@RequestMapping("/$!tool.firstLowerCase($tableInfo.name)")
public class $!{tableName} {
    
    @Resource
    private $!{tableInfo.name}Service $!tool.firstLowerCase($tableInfo.name)ServiceImpl;
 
    
    @GetMapping(value = "/get/{$!pk.name}")
    public Result selectOne(@PathVariable("$!pk.name") $!pk.shortType $!pk.name) {
        $tableInfo.name result = $!{tool.firstLowerCase($tableInfo.name)}ServiceImpl.selectById(id);
        if(Objects.nonNull(result)){
            return new Result<>(true,StatusCode.OK,"查询成功",result);
        }
        return new Result<>(true,StatusCode.ERROR,"查询失败");
    }
    
    
    @PostMapping(value = "/insert")
    public Result insert(@RequestBody $tableInfo.name $!tool.firstLowerCase($tableInfo.name)) {
        int result = $!{tool.firstLowerCase($tableInfo.name)}ServiceImpl.insert($!tool.firstLowerCase($tableInfo.name));
        if (result > 0) {
          return new Result<>(true,StatusCode.OK,"新增成功",result);
        }
        return new Result<>(true,StatusCode.ERROR,"新增失败"); 
    }
 
    
    @PutMapping(value = "/update")
    public Result update(@RequestBody $tableInfo.name $!tool.firstLowerCase($tableInfo.name)) {
        $tableInfo.name result = $!{tool.firstLowerCase($tableInfo.name)}ServiceImpl.update($!tool.firstLowerCase($tableInfo.name));
        if (Objects.nonNull(result)) {
          return new Result<>(true,StatusCode.OK,"修改成功",result);
        }
        return new Result<>(true,StatusCode.ERROR,"修改失败");
    }
 
    
    @DeleteMapping(value = "/delete/{$!pk.name}")
    public Result delete(@PathVariable("$!pk.name") $!pk.shortType $!pk.name) {
        int result = $!{tool.firstLowerCase($tableInfo.name)}ServiceImpl.deleteById($!pk.name);
        if (result > 0) {
          return new Result<>(true,StatusCode.OK,"删除成功",result);
        }
        return new Result<>(true,StatusCode.ERROR,"删除失败");
    }
 
    
    @GetMapping(value = "/selectAll")
    public Result<List<$tableInfo.name>> selectAll() {
        List<$tableInfo.name> $!tool.firstLowerCase($tableInfo.name)s = $!{tool.firstLowerCase($tableInfo.name)}ServiceImpl.selectAll();
        if (CollectionUtils.isEmpty($!tool.firstLowerCase($tableInfo.name)s)) {
            return new Result<>(true,StatusCode.ERROR,"查询全部数据失败");       
        }
        return new Result<>(true,StatusCode.OK,"查询全部数据成功",$!tool.firstLowerCase($tableInfo.name)s);
        
    }
 
    
    @GetMapping(value = "/selectPage/{current}/{size}")
    public Result selectPage(@PathVariable("current") Integer current,@PathVariable("size") Integer size) {
        PageInfo<$tableInfo.name> page = $!{tool.firstLowerCase($tableInfo.name)}ServiceImpl.selectPage(current, size);
        if (Objects.nonNull(page)) {
            return new Result<>(true,StatusCode.OK,"分页条件查询成功",new PageResult<>(page.getTotal(),page.getList()));
        }
        return new Result<>(true,StatusCode.ERROR,"分页查询数据失败");
    }
    
}

service接口:service.java 代码如下：


##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 com.github.pagehelper.PageInfo;
 

public interface $!{tableName} {
 
    
    $!{tableInfo.name} selectById($!pk.shortType $!pk.name);
 
    
    PageInfo<$!{tableInfo.name}> selectPage(int current, int size);
 
    
    List<$!{tableInfo.name}> selectAll();
    
    
    List<$!{tableInfo.name}> selectList($!{tableInfo.name} $!tool.firstLowerCase($!{tableInfo.name}));
 
    
    int insert($!{tableInfo.name} $!tool.firstLowerCase($!{tableInfo.name}));
    
    
    int batchInsert(List<$!{tableInfo.name}> $!tool.firstLowerCase($!{tableInfo.name})s);
    
    
    $!{tableInfo.name} update($!{tableInfo.name} $!tool.firstLowerCase($!{tableInfo.name}));
 
    
    int deleteById($!pk.shortType $!pk.name);
    
    
    int count();
}

serviceImpl 实现类:serviceImpl .java代码如下：


##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 $!{tableInfo.savePackageName}.dao.$!{tableInfo.name}Dao;
import $!{tableInfo.savePackageName}.service.$!{tableInfo.name}Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.stereotype.Service;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
 
import javax.annotation.Resource;
import java.util.List;
 
 

@Service("$!tool.firstLowerCase($!{tableInfo.name})ServiceImpl")
public class $!{tableName} implements $!{tableInfo.name}Service {
    @Resource
    private $!{tableInfo.name}Dao $!tool.firstLowerCase($!{tableInfo.name})Dao;
 
    
    @Override
    public $!{tableInfo.name} selectById($!pk.shortType $!pk.name) {
        return this.$!{tool.firstLowerCase($!{tableInfo.name})}Dao.selectById($!pk.name);
    }
 
    
    @Override
    public PageInfo<$!{tableInfo.name}> selectPage(int current, int size) {
        PageHelper.startPage(current,size);
        List<$!{tableInfo.name}> dataList = $!{tool.firstLowerCase($!{tableInfo.name})}Dao.selectAll();
        return new PageInfo<>(dataList);
    }
 
    
     @Override
     public List<$!{tableInfo.name}> selectAll() {
        return this.$!{tool.firstLowerCase($!{tableInfo.name})}Dao.selectAll();
     }
     
    
    @Override
    public List<$!{tableInfo.name}> selectList($!{tableInfo.name} $!{tool.firstLowerCase($!{tableInfo.name})}) {
        return this.$!{tool.firstLowerCase($!{tableInfo.name})}Dao.selectList($!{tool.firstLowerCase($!{tableInfo.name})});
    }
    
    
    @Override
    @Transactional
    public int insert($!{tableInfo.name} $!tool.firstLowerCase($!{tableInfo.name})) {
        return this.$!{tool.firstLowerCase($!{tableInfo.name})}Dao.insert($!tool.firstLowerCase($!{tableInfo.name}));
    }
 
    
    @Override
    @Transactional
    public int batchInsert(List<$!{tableInfo.name}> $!tool.firstLowerCase($!{tableInfo.name})s) {
        return this.$!{tool.firstLowerCase($!{tableInfo.name})}Dao.batchInsert($!tool.firstLowerCase($!{tableInfo.name})s);
    }
 
    
    @Override
    @Transactional
    public $!{tableInfo.name} update($!{tableInfo.name} $!tool.firstLowerCase($!{tableInfo.name})) {
        this.$!{tool.firstLowerCase($!{tableInfo.name})}Dao.update($!tool.firstLowerCase($!{tableInfo.name}));
        return this.selectById($!{tool.firstLowerCase($!{tableInfo.name})}.get$!tool.firstUpperCase($pk.name)());
    }
 
    
    @Override
    @Transactional
    public int deleteById($!pk.shortType $!pk.name) {
        return this.$!{tool.firstLowerCase($!{tableInfo.name})}Dao.deleteById($!pk.name);
    }
    
    
     @Override
     public int count(){
        return this.$!{tool.firstLowerCase($!{tableInfo.name})}Dao.count();
     }
}

dao层：dao.java代码如下


##定义初始变量
#set($tableName = $tool.append($tableInfo.name, "Dao"))
##设置回调
$!callback.setFileName($tool.append($tableName, ".java"))
$!callback.setSavePath($tool.append($tableInfo.savePath, "/dao"))
 
##拿到主键
#if(!$tableInfo.pkColumn.isEmpty())
    #set($pk = $tableInfo.pkColumn.get(0))
#end
 
#if($tableInfo.savePackageName)package $!{tableInfo.savePackageName}.#{end}dao;
 
import $!{tableInfo.savePackageName}.entity.$!{tableInfo.name};
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
import java.util.List;
 

 @Mapper
public interface $!{tableName} {
 
    
    $!{tableInfo.name} selectById($!pk.shortType $!pk.name);
    
    
    List<$!{tableInfo.name}> selectAll();
    
    
    List<$!{tableInfo.name}> selectList($!{tableInfo.name} $!tool.firstLowerCase($!{tableInfo.name}));
 
    
    int insert($!{tableInfo.name} $!tool.firstLowerCase($!{tableInfo.name}));
    
    
    int batchInsert(List<$!{tableInfo.name}> $!tool.firstLowerCase($!{tableInfo.name})s);
    
    
    int update($!{tableInfo.name} $!tool.firstLowerCase($!{tableInfo.name}));
 
    
    int deleteById($!pk.shortType $!pk.name);
 
    
    int count();
}

mapper.xml代码如下：


##引入mybatis支持
$!mybatisSupport
 
##设置保存名称与保存位置
$!callback.setFileName($tool.append($!{tableInfo.name}, "Dao.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="$!{tableInfo.savePackageName}.dao.$!{tableInfo.name}Dao">
    <!-- 结果集 -->
    <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>
    
    <!-- 基本字段 -->
    <sql id="Base_Column_List">
        #allSqlColumn()
    </sql>
    
    <!-- 查询单个 -->
    <select id="selectById" resultMap="$!{tableInfo.name}Map">
        select
          <include refid="Base_Column_List" />
        from $!tableInfo.obj.name
        where $!pk.obj.name = #{$!pk.name}
    </select>
 
    <!-- 查询全部 -->
    <select id="selectAll" resultMap="$!{tableInfo.name}Map">
        select
        <include refid="Base_Column_List" />
        from $!tableInfo.obj.name
    </select>
 
    <!--通过实体作为筛选条件查询-->
    <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>
 
    <!-- 新增所有列 -->
    <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>
    
    <!-- 批量新增 -->
    <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>
 
    <!-- 通过主键修改数据 -->
    <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>
 
    <!--通过主键删除-->
    <delete id="deleteById">
        delete from $!{tableInfo.obj.name} where $!pk.obj.name = #{$!pk.name}
    </delete>
    
    <!-- 总数 resultType="int">
        select count(*) from $!{tableInfo.obj.name}
    </select>
</mapper>

测试成功！

代码就全部生成出来了！

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