使用 EasyCode生成springboot+mybatis基础程序的实现示例

目录

一、前言

此文将分享我个人使用的一个easycode生成方法，生成之后可以直接运行，这也就意味着，生成的代码会更加规范化。规范化就意味着会有更多的约束。

二、正文

2.1 基础前提

2.1.1springboot配置

引入所需jar包
pom.xml加入一下依赖

<dependency>            <groupid>org.springframework.boot</groupid>            <artifactid>spring-boot-starter</artifactid>        </depende开婚纱店ncy>        <dependency>            <groupid>org.springframework.boot</groupid>            <artifactid>spring-boot-starter-test</artifactid>            <scope>test</scope>        </dependency>        <dependency>            <groupid>org.springframework.boot</groupid>            <artifactid>spring-boot-starter-web</artifactid>        </dependency>        <dependency>            <groupid>mysql</groupid>            <artifactid>mysql-connector-java</artifactid>            <version>5.1.47</version>        </dependency>        <dependency>            <groupid>org.mybatis.spring.boot</groupid>            <artifactid>mybatis-spring-boot-starter</artifactid>            <version>1.3.2</version>        </dependency>        <dependency>            <groupid>com.github.pagehelper</groupid>            <artifactid>pagehelper-spring-boot-starter</artifactid>            <version>1.2.5</version>        </dependency>        <dependency>            <groupid>com.alibaba</groupid>            <artifactid>fastjson</artifactid>            <version>1.2.76</version>        </dependency>        <!--swagger3-->        <dependency>            <groupid>io.springfox</groupid>            <artifactid>springfox-boot-starter</artifactid>            <version>3.0.0</version>        </dependency>        <dependency>            <groupid>com.github.xiaoymin</groupid>            <artifactid>swagger-bootstrap-ui</artifactid>            <version>1.9.6</version>        </dependency>        <dependency>            <groupid>org.projectlombok</groupid>            <artifactid>lombok</artifactid>            <version>1.18.10</version>        </dependency>

application.yml配置

spring:  datasource:    driver-class-name: com.mysql.jdbc.driver    url: jdbc:mysql://ip:3306/dbname?uunicode=true&characterencoding=utf-8&ussl=fal&rvertimezone=utc    urname: xxx    password: xxxmybatis:  type-alias-package: xxx.entity  mapper-locations: classpath:mapper/*.xml# pagehelperpagehelper:  helperdialect: mysql  reasonable: true  supportmethodsarguments: true  params: count=countsql#showsqllogging:  level:    top:      yuechenc:        yueduapi:          mapper : debug

2.1.1 基础工具类

以下是我个人封装的pagehelper分页工具类和统一的返回以及swagger配置

pagehelper工具类

如上图所示，在启动类所在目录下新建目录common.page/common.util
在page目录新建类pagerequest.java

package xxx.common.page;/** * @author zhiwei wang * @version $1.0 * @description 分页请求 * @date 2022/1/19 9:25 * @history */public class pagerequest {    /**     * 当前页码     */    private int pagenum;    /**     * 每页数量     */    private int pagesize;    public pagerequest(int start, int limit) {        pagenum=start;        pagesize=limit;    }    public int getpagenum() {        return pagenum;    }    public void tpagenum(int pagenum) {        this.pagenum = pagenum;    }    public int getpagesize() {        return pagesize;    }    public void tpagesize(int pagesize) {        this.pagesize = pagesize;    }}

在page目录新建类pageresult.java

package xxx.common.page;import java.util.list;/** * @author zhiwei wang * @version $1.0 * @name pageresult * @description 分页返回结果 * @date 2022/1/19 9:25 * @history */public class pageresult {    /**     * 当前页码     */    private int pagenum;    /**     * 每页数量     */    private int pagesize;    /**     * 记录总数     */    private long totalsize;    /**     * 页码总数     */    private int totalpages;    /**     * 数据模型     */    private list<?> content;    public int getpagenum() {        return pagenum;    }    public void tpagenum(int pagenum) {        this.pagenum = pagenum;    }    public int getpagesize() {        return pagesize;    }    public void tpagesize(int pagesize) {        this.pagesize = pagesize;    }    public long gettotalsize() {        return totalsize;    }    public void ttotalsize(long totalsize) {        this.totalsize = totalsize;    }    public int gettotalpages() {        return totalpages;    }    public void ttotalpages(int totalpages) {        this.totalpages = totalpages;    }    public list<?> getcontent() {        return content;    }    public void tcontent(list<?> content) {        this.content = content;    }}

在util目录下新建工具类pageutils.java

package xxx.common.util;import com.github.pagehelper.pageinfo;import xxx.common.page.pagerequest;import xxx.common.page.pageresult;/** * @author zhiwei wang * @version $ * @name pageutil * @description  * @date 2022/1/19 9:26 * @history */public class pageutils {    /**     * 将分页信息封装到统一的接口     * @param pagerequest     * @param pageinfo     * @return     */    public static pageresult getpageresult(pagerequest pagerequest, pageinfo<?> pageinfo) {        pageresult pageresult = new pageresult();        pageresult.tpagenum(pageinfo.getpagenum());        pageresult.tpagesize(pageinfo.getpagesize());        pageresult.ttotalsize(pageinfo.gettotal());        pageresult.ttotalpages(pageinfo.getpages());        pageresult.tcontent(pageinfo.getlist());        return pageresult;    }}

统一返回体
在common目录下新建status.java

package xxx.common;/** * @author zhiwei wang * @version $ * @name status * @description 返回信息枚举 * @date 2022/1/18 21:01 * @history */public enum status {    fail("101", "失败")    ,get_fail("111", "查询失败")    ,add_fail("121", "添加失败")    ,delete_fail("131", "删除失败")    ,update_fail("141", "修改失败")    ,success("100", "成功")    ,get_success("110", "查询成功")    ,add_success("120", "添加成功")    ,delete_success("130", "删除成功")    ,update_success("140", "修改成功")    ,error("201", "错误")    ,ur_nofound("211", "用户不存在")    ,error_account("212", "账号或密码错误")    ,ur_exist("213", "用户已存在")    ,ur_lock("214", "账号被锁定，请联系管理员")    ,ip_lock("215", "ip 被锁定，请联系管理员")    ,param_error("303", "参数错误")    ,token_expired("1044", "token invalid expired");    public string status; // 状态码    public string msg; // 提示语    status(string status, string msg) {        this.status = status;        this.msg = msg;    }}

在common目录下新建returndata.java

package xxx.common;import com.alibaba.fastjson.json;import com.alibaba.fastjson.rializer.rializerfeature;/** * @author zhiwei wang * @version $ * @name returndata * @description 响应数据结构封装 * @date 2022/1/18 20:59 * @history */public class returndata<t> {    private string status; // 状态码    private string msg; // 提示语    private t data;  // 数据集合    public static <t> returndata<t> success(t data) {        re中国有哪些传统节日turn new returndata<t>(status.success.status, status.success.msg, data);    }    public static <t> returndata<t> success(string msg) {        return new returndata<t>(status.success.status, msg);    }    public static <t> returndata<t> success() {        return new returndata<t>(status.success.status, status.success.msg);    }    public static <t> returndata<t> get_success(t data) {        return new returndata<t>(status.get_success.status, status.get_success.msg, data);    }    public static <t> returndata<t> get_success(string msg) {        return new returndata<t>(status.get_success.status, msg);    }    public static <t> returndata<t> get_success() {        return new returndata<t>(status.get_success.status, status.get_success.msg);    }    public static <t> returndata<t> add_success() {        return new returndata<t>(status.add_success.status, status.add_success.msg);    }    public static <t> returndata<t> add_success(t data) {        return new returndata<t>(status.add_success.status, status.add_success.msg,data);    }    public static <t> returndata<t> delete_success() {        return new returndata<t>(status.delete_success.status, status.delete_success.msg);    }    public static <t> returndata<t> update_success() {        return new returndata<t>(status.update_success.status, status.update_success.msg);    }    public static <t> returndata<t> update_success(t data) {        return new returndata<t>(status.update_success.status, status.update_success.msg,data);    }    public static <t> returndata<t> fail(string msg) {        return new returndata<t>(status.fail.status, msg);    }    public static <t> returndata<t> fail() {        return new returndata<t>(status.fail.status, status.fail.msg);    }    public static <t> returndata<t> get_fail(string msg) {        return new returndata<t>(status.get_fail.status, msg);    }    public static <t> returndata<t> get_fail() {        return new returndata<t>(status.get_fail.status, status.fail.msg);    }    public static <t> returndata<t> add_fail() {        return new returndata<t>(status.add_fail.status, status.add_fail.msg);    }    public static <t> returndata<t> delete_fail() {        return new returndata<t>(status.delete_fail.status, status.delete_fail.msg);    }    public static <t> returndata<t> update_fail() {        return new returndata<t>(status.update_fail.status, status.update_fail.msg);    }    public static <t> returndata<t> error(string msg) {        return new returndata<t>(status.error.status, msg);    }    public static <t> returndata<t> error() {        return new returndata<t>(status.error.status, status.error.msg);    }    public returndata(string status, string msg, t data) {        this.status = status;        this.msg = msg;        this.data = data;    }    public returndata(string status, string msg) {        this.status = status;        this.msg = msg;    }    public string getstatus() {        return status;    }    public void tstatus(string status) {        this.status = status;    }    public string getmsg() {        return msg;    }    public void tmsg(string msg) {        this.msg = msg;    }    public t getdata() {        return data;    }    public void tdata(t data) {        this.data = data;    }    /**     * 如果字段为null,该字段不显示     */    @override    public string tostring() {        return json.tojsonstring(this);    }    /**     * 返回全部字段,包括null     *     * @return     */    public string toallstring() {        return json.tojsonstring(this, rializerfeature.writemapnullvalue);    }}

swagger3配置
在common目录下新建swagger3config.java

package xxx.common;import io.swagger.annotations.apioperation;import org.springframework.context.annotation.bean;import org.springframework.context.annotation.configuration;import springfox.documentation.builders.apiinfobuilder;import springfox.documentation.builders.pathlectors;import springfox.documentation.builders.requesthandlerlectors;import springfox.documentation.rvice.apiinfo;import springfox.documentation.rvice.contact;import springfox.documentation.spi.documentationtype;import springfox.documentation.spring.web.plugins.docket;/** * @author zhiwei wang * @version $ * @name swagger3config * @description * @date 2022/1/18 21:40 * @history */@configurationpublic class swagger3config {    @bean    public docket createrestapi() {        return new docket(documentationtype.oas_30)                .apiinfo(apiinfo())                .lect()                .apis(requesthandlerlectors.bapackage("xxx.controller"))                .paths(pathlectors.any())                .build();    }    privat英语日记带翻译e apiinfo apiinfo() {        return new apiinfobuilder()                .title("swagger3接口文档")                .description("测试api")                .contact(new contact("测试api", "http://localhost:8080/swagger-ui/index.html", "1757895437@qq.com"))                .version("1.0")                .build();    }}

2.2 模板设置

2.2.1安装idea插件:easycode

如图所示，打开idea的设置界面，选择插件，搜索easycode，点击安装即可

2.2.2 设置模板

如图：依次打开idea设置-> 其他设置->easycode-mybatiscodehelper->template tting
右边的就是生成代码的模板，一次将下列模板粘贴到里面即可:

entity

##引入宏定义$!define##使用宏定义设置回调（保存位置与文件后缀）#save("/entity", ".java")##使用宏定义设置包后缀#tpackagesuffix("entity")##使用全局变量实现默认包导入$!autoimportimport java.io.rializable;##使用宏定义实现类注释信息#tablecomment("实体类")public class $!{tableinfo.name} implements rializable {    private static final long rialversionuid = $!tool.rial();#foreach($column in $tableinfo.fullcolumn)    #if(${column.comment})/**    * ${column.comment}    */#end    private $!{tool.getclsnamebyfullname($column.type)} $!{column.name};#end#foreach($column in $tableinfo.fullcolumn)    ##使用宏定义实现get,t方法    #gettmethod($column)#end    @override    public string tostring(){        return "$tableinfo.name {" +        #foreach($column in $tableinfo.fullcolumn)    "$column.name : " + $column.name + ", " +        #end        '}';    }}

dao

##定义初始变量#t($tablename = $tool.append($tableinfo.name, "dao"))##设置回调$!callback.tfilename($tool.append($tablename, ".java"))$!callback.tsavepath($tool.append($tableinfo.savepath, "/dao"))##拿到主键#if(!$tableinfo.pkcolumn.impty())    #t($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.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     */    $!{tableinfo.name} lectbyid($!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}> lectpage(@param("start") int start, @param("limit") int limit);    /**     * 查询全部     *     * @return 对象列表     */    list<$!{tableinfo.name}> lectall();        /**     * 通过实体作为筛选条件查询     *     * @param $!tool.firstlowerca($!{tableinfo.name}) 实例对象     * @return 对象列表     */    list<$!{tableinfo.name}> lectlist($!{tableinfo.name} $!tool.firstlowerca($!{tableinfo.name}));    /**     * 新增数据     *     * @param $!tool.firstlowerca($!{tableinfo.name}) 实例对象     * @return 影响行数     */    int inrt($!{tableinfo.name} $!tool.firstlowerca($!{tableinfo.name}));/**     * 批量新增     *     * @param $!tool.firstlowerca($!{tableinfo.name})s 实例对象的集合     * @return 影响行数     */int batchinrt(list<$!{tableinfo.name}> $!tool.firstlowerca($!{tableinfo.name})s);    /**     * 修改数据     *     * @param $!tool.firstlowerca($!{tableinfo.name}) 实例对象     * @return 影响行数     */    int update($!{tableinfo.name} $!tool.firstlowerca($!{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();}

rvice

##定义初始变量#t($tablename = $tool.append($tableinfo.name, "rvice"))##设置回调$!callback.tfilename($tool.append($tablename, ".java"))$!callback.tsavepath($tool.append($tableinfo.savepath, "/rvice"))##拿到主键#if(!$tableinfo.pkcolumn.impty())    #t($pk = $tableinfo.pkcolumn.get(0))#end#if($tableinfo.savepackagename)package $!{tableinfo.savepackagename}.#{end}rvice;import $!{tableinfo.savepackagename}.entity.$!{tableinfo.name};import java.util.list;import java.util.map;import $!{tableinfo.savepackagename}.common.page.pageresult;/** * $!{tableinfo.comment}($!{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     */    $!{tableinfo.name} lectbyid($!pk.shorttype $!pk.name);    /**     * 分页查询     *     * @param start 查询起始位置     * @param limit 查询条数     * @return 对象列表     */    pageresult lectpage(int start, int limit);    /**                                                                             * 查询全部     *     * @return 对象列表     */    list<$!{tableinfo.name}> lectall();        /**     * 通过实体作为筛选条件查询     *     * @param $!tool.firstlowerca($!{tableinfo.name}) 实例对象     * @return 对象列表     */    list<$!{tableinfo.name}> lectlist($!{tableinfo.name} $!tool.firstlowerca($!{tableinfo.name}));    /**     * 新增数据     *     * @param $!tool.firstlowerca($!{tableinfo.name}) 实例对象     * @return 影响行数     */    int inrt($!{tableinfo.name} $!tool.firstlowerca($!{tableinfo.name}));/**     * 批量新增     *     * @param $!tool.firstlowerca($!{tableinfo.name})s 实例对象的集合     * @return 影响行数     */int batchinrt(list<$!{tableinfo.name}> $!tool.firstlowerca($!{tableinfo.name})s);    /**     * 修改数据     *     * @param $!tool.firstlowerca($!{tableinfo.name}) 实例对象     * @return 修改     */    $!{tableinfo.name} update($!{tableinfo.name} $!tool.firstlowerca($!{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();}

rviceimpl

##定义初始变量#t($tablename = $tool.append($tableinfo.name, "rviceimpl"))##设置回调$!callback.tfilename($tool.append($tablename, ".java"))$!callback.tsavepath($tool.append($tableinfo.savepath, "/rvice/impl"))##拿到主键#if(!$tableinfo.pkcolumn.impty())    #t($pk = $tableinfo.pkcolumn.get(0))#end#if($tableinfo.savepackagename)package $!{tableinfo.savepackagename}.#{end}rvice.impl;import $!{tableinfo.savepackagename}.entity.$!{tableinfo.name};import $!{tableinfo.savepackagename}.dao.$!{tableinfo.name}dao;import $!{tableinfo.savepackagename}.rvice.$!{tableinfo.name}rvice;import org.springframework.stereotype.rvice;import $!{tableinfo.savepackagename}.common.page.pageresult;import $!{tableinfo.savepackagename}.common.page.pagerequest;import com.github.pagehelper.pagehelper;import com.github.pagehelper.pageinfo;import $!{tableinfo.savepackagename}.common.util.pageutils;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 $!time.currtime() */@rvice("$!tool.firstlowerca($!{tableinfo.name})rvice")public class $!{tablename} implements $!{tableinfo.name}rvice {    @resource    private $!{tableinfo.name}dao $!tool.firstlowerca($!{tableinfo.name})dao;    /**     * 通过id查询单条数据     *     * @param $!pk.name 主键     * @return 实例对象     */    @override    public $!{tableinfo.name} lectbyid($!pk.shorttype $!pk.name) {        return this.$!{tool.firstlowerca($!{tableinfo.name})}dao.lectbyid($!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 pageresult lectpage(int start, int limit) {        pagerequest pagerequest=new pagerequest(start,limit);        return pageutils.getpageresult(pagerequest, getpageinfo(pagerequest));    }    /**     * 调用分页插件完成分页     * @param pagerequest     * @return     */    private pageinfo<$!{tableinfo.name}> getpageinfo(pagerequest pagerequest) {        int pagenum = pagerequest.getpagenum();        int pagesize = pagerequest.getpagesize();        pagehelper.startpage(pagenum, pagesize);        list<$!{tableinfo.name}> $!{tool.firstlowerca($!{tableinfo.name})}s = this.$!{tool.firstlowerca($!{tableinfo.name})}dao.lectall();        return new pageinfo<>($!{tool.firstlowerca($!{tableinfo.name})}s);    }    /**     * 查询所有     *     * @return 实例对象的集合     */    @override    public list<$!{tableinfo.name}> lectall() {        return this.$!{tool.firstlowerca($!{tableinfo.name})}dao.lectall();    }        /**     * 根据条件查询     *     * @return 实例对象的集合     */    @override    public list<$!{tableinfo.name}> lectlist($!{tableinfo.name} $!{tool.firstlowerca($!{tableinfo.name})}) {        return this.$!{tool.firstlowerca($!{tableinfo.name})}dao.lectlist($!{tool.firstlowerca($!{tableinfo.name})});    }        /**     * 新增数据     *     * @param $!tool.firstlowerca($!{tableinfo.name}) 实例对象     * @return 实例对象     */    @override    public int inrt($!{tableinfo.name} $!tool.firstlowerca($!{tableinfo.name})) {        return this.$!{tool.firstlowerca($!{tableinfo.name})}dao.inrt($!tool.firstlowerca($!{tableinfo.name}));    }    /**     * 批量新增     *     * @param $!tool.firstlowerca($!{tableinfo.name})s 实例对象的集合     * @return 生效的条数     */    @override    public int batchinrt(list<$!{tableinfo.name}> $!tool.firstlowerca($!{tableinfo.name})s) {        return this.$!{tool.firstlowerca($!{tableinfo.name})}dao.batchinrt($!tool.firstlowerca($!{tableinfo.name})s);    }    /**     * 修改数据     *     * @param $!tool.firstlowerca($!{tableinfo.name}) 实例对象     * @return 实例对象     */    @override    public $!{tableinfo.name} update($!{tableinfo.name} $!tool.firstlowerca($!{tableinfo.name})) {        this.$!{tool.firstlowerca($!{tableinfo.name})}dao.update($!tool.firstlowerca($!{tableinfo.name}));        return this.lectbyid($!{tool.firstlowerca($!{tableinfo.name})}.get$!tool.firstupperca($pk.na马术装me)());    }    /**     * 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.firstlowerca($!{tableinfo.name})}dao.deletebyid($!pk.name);    }        /**     * 查询总数据数     *     * @return 数据总数     */    @override    public int count(){        return this.$!{tool.firstlowerca($!{tableinfo.name})}dao.count();    }}

controller

##定义初始变量#t($tablename = $tool.append($tableinfo.name, "controller"))##设置回调$!callback.tfilename($tool.append($tablename, ".java"))$!callback.tsavepath($tool.append($tableinfo.savepath, "/controller"))##拿到主键#if(!$tableinfo.pkcolumn.impty())    #t($pk = $tableinfo.pkcolumn.get(0))#end#if($tableinfo.savepackagename)package $!{tableinfo.savepackagename}.#{end}controller;import $!{tableinfo.savepackagename}.entity.$!{tableinfo.name};import $!{tableinfo.savepackagename}.rvice.$!{tableinfo.name}rvice;import org.springframework.web.bind.annotation.*;import $!{tableinfo.savepackagename}.common.returndata;import $!{tableinfo.savepackagename}.common.page.pageresult;import java.util.list;import javax.annotation.resource;/** * $!{tableinfo.comment}($!{tableinfo.name})控制层 * * @author $!author * @since $!time.currtime() */@restcontroller@requestmapping("/$!tool.firstlowerca($tableinfo.name)")public class $!{tablename} {    /**     * 服务对象     */    @resource    private $!{tableinfo.name}rvice $!tool.firstlowerca($tableinfo.name)rvice;    /**     * 通过主键查询单条数据     *     * @param $!tool.firstlowerca($tableinfo.name) 参数对象     * @return 单条数据     */    @requestmapping(value = "get", method = requestmethod.get)    public returndata<$tableinfo.name> lectone($tableinfo.name $!tool.firstlowerca($tableinfo.name)) {        $tableinfo.name result = $!{tool.firstlowerca($tableinfo.name)}rvice.lectbyid($!{tool.firstlowerca($tableinfo.name)}.getid());        if(result != null){            return returndata.get_success(result);        }        return returndata.get_fail();    }        /**     * 新增一条数据     *     * @param $!tool.firstlowerca($tableinfo.name) 实体类     * @return respon对象     */    @requestmapping(value = "inrt", method = requestmethod.post)    public returndata<$tableinfo.name> inrt(@requestbody $tableinfo.name $!tool.firstlowerca($tableinfo.name)) {        int result = $!{tool.firstlowerca($tableinfo.name)}rvice.inrt($!tool.firstlowerca($tableinfo.name));        if (result > 0) {            return returndata.add_success();        }        return returndata.add_fail();    }    /**     * 修改一条数据     *     * @param $!tool.firstlowerca($tableinfo.name) 实体类     * @return respon对象     */    @requestmapping(value = "update", method = requestmethod.put)    public returndata<$tableinfo.name> update(@requestbody $tableinfo.name $!tool.firstlowerca($tableinfo.name)) {        $tableinfo.name result = $!{tool.firstlowerca($tableinfo.name)}rvice.update($!tool.firstlowerca($tableinfo.name));        if (result != null) {            return returndata.update_success(result);        }        return returndata.update_fail();    }    /**     * 删除一条数据     *     * @param $!tool.firstlowerca($tableinfo.name) 参数对象     * @return respon对象     */    @requestmapping(value = "delete", method = requestmethod.delete)    public returndata<$tableinfo.name> delete($tableinfo.name $!tool.firstlowerca($tableinfo.name)) {        int result = $!{tool.firstlowerca($tableinfo.name)}rvice.deletebyid($!{tool.firstlowerca($tableinfo.name)}.getid());        if (result > 0) {            return returndata.delete_success();        }        return returndata.delete_fail();    }    /**     * 查询全部     *     * @return respon对象     */    @requestmapping(value = "lectall", method = requestmethod.get)    public returndata<list<$tableinfo.name>> lectall() {        list<$tableinfo.name> $!tool.firstlowerca($tableinfo.name)s = $!{tool.firstlowerca($tableinfo.name)}rvice.lectall();        if ($!tool.firstlowerca($tableinfo.name)s != null) {            return returndata.get_success($!tool.firstlowerca($tableinfo.name)s);        }        return returndata.get_fail();    }    /**     * 分页查询     *     * @param start 偏移     * @param limit 条数     * @return respon对象     */    @requestmapping(value = "lectpage", method = requestmethod.get)    public returndata<pageresult> lectpage(integer start, integer limit) {        pageresult pageresult = $!{tool.firstlowerca($tableinfo.name)}rvice.lectpage(start, limit);        if (pageresult != null) {            return returndata.get_success(pageresult);        }        return returndata.get_fail();    }    }

mapper.xml

##引入mybatis支持$!mybatissupport##设置保存名称与保存位置$!callback.tfilename($tool.append($!{tableinfo.name}, "dao.xml"))$!callback.tsavepath($tool.append($modulepath, "/src/main/resources/mapper"))##拿到主键#if(!$tableinfo.pkcolumn.impty())    #t($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="ba_column_list">        #allsqlcolumn()    </sql>        <!-- 查询单个 -->    <lect id="lectbyid" resultmap="$!{tableinfo.name}map">        lect          <include refid="ba_column_list" />        from $!tableinfo.obj.name        where $!pk.obj.name = #{$!pk.name}    </lect>    <!-- 分页查询 -->    <lect id="lectpage" resultmap="$!{tableinfo.name}map">        lect        <include refid="ba_column_list" />        from $!tableinfo.obj.name        limit #{start},#{limit}    </lect>    <!-- 查询全部 -->    <lect id="lectall" resultmap="$!{tableinfo.name}map">        lect        <include refid="ba_column_list" />        from $!tableinfo.obj.name    </lect>    <!--通过实体作为筛选条件查询-->    <lect id="lectlist" resultmap="$!{tableinfo.name}map">        lect        <include refid="ba_column_list" />      here反义词  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>    </lect>    <!-- 新增所有列 -->    <inrt id="inrt" keyproperty="$!pk.name" ugeneratedkeys="true">        inrt 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)    </inrt>        <!-- 批量新增 -->    <inrt id="batchinrt">        inrt into $!{tableinfo.obj.name}(#foreach($column in $tableinfo.fullcolumn)$!column.obj.name#if($velocityhasnext), #end#end)        values         <foreach collection="$!tool.firstlowerca($!{tableinfo.name})s" item="item" index="index" parator=",">        (            #foreach($column in $tableinfo.fullcolumn)            #{item.$!{column.name}}#if($velocityhasnext), #end#end         )         </foreach>    </inrt>    <!-- 通过主键修改数据 -->    <update id="update">        update $!{tableinfo.obj.parent.name}.$!{tableinfo.obj.name}        <t>        #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        </t>        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 -->    <lect id="count" resulttype="int">        lect count(*) from $!{tableinfo.obj.name}    </lect></mapper>

2.3 生成方法

首先使用idea连接数据库，此处省略，如果有不知道怎么连接的，请参考：

如图选择需要生成代码的表->右键->easycodemybatiscodehelper->generate_code,弹出如下窗口

module：选择要生成到那个模块
package：填写自己的包名
path:工程路径

选择要生成的类，点击ok即可看到工程里已经生成了相应的类

注意：使用mybatis需要在启动类中加入注释

//扫描dao的路径配置@mapperscan(".dao")

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