详解使用Mybatis-plus + velocity模板生成自定义的代码
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2022-03-23 18:52:35
pom.xml文件的配置 com.baomidou mybat...
pom.xml文件的配置
<dependency> <groupid>com.baomidou</groupid> <artifactid>mybatis-plus-boot-starter</artifactid> <version>3.3.0</version> </dependency> <dependency> <groupid>com.baomidou</groupid> <artifactid>mybatis-plus-generator</artifactid> <version>3.1.0</version> </dependency> <!-- 代码生成器模板 --> <dependency> <groupid>org.apache.velocity</groupid> <artifactid>velocity</artifactid> <version>1.7</version> </dependency>
codegenerator配置文件
import java.text.simpledateformat; import java.util.date; import java.util.hashmap; import java.util.map; import com.baomidou.mybatisplus.annotation.dbtype; import com.baomidou.mybatisplus.annotation.idtype; import com.baomidou.mybatisplus.generator.autogenerator; import com.baomidou.mybatisplus.generator.injectionconfig; import com.baomidou.mybatisplus.generator.config.datasourceconfig; import com.baomidou.mybatisplus.generator.config.globalconfig; import com.baomidou.mybatisplus.generator.config.packageconfig; import com.baomidou.mybatisplus.generator.config.strategyconfig; import com.baomidou.mybatisplus.generator.config.templateconfig; import com.baomidou.mybatisplus.generator.config.rules.namingstrategy; import lombok.extern.java.log; /** * 代码生成器 */ @log public class codegenerator { //项目存储位置 public static string project_generate_disk = "e:\\"; //包名 public static string parent_package_name = "com"; //包名 public static string package_name = "rent.security"; //数据库地址 public static string db_url = "jdbc:mysql://localhost:3306/mp?useunicode=true&usessl=false&characterencoding=utf8&servertimezone=utc"; //数据库实例名 public static string driver_class_name = "com.mysql.jdbc.driver"; //数据库用户 public static string user = "root"; //数据库密码 public static string password = "root"; //数据库schema public static string schema = "mp"; //要查询的表名 public static string table_names = "sys_role_menu"; //创建人 public static string author = "jmm"; //是否强制带上注解 public static boolean enable_table_field_annotation = false; //生成的注解带上idtype类型 public static idtype table_idtype = null; //生成的service 接口类名是否以i开头 默认是以i开头 user表 -> iuserservice, userserviceimpl public static boolean service_class_name_start_withi = false; /** * 全局配置 */ private static globalconfig globalgenerate() { globalconfig config = new globalconfig(); config.setactiverecord(false)// 不需要activerecord特性的请改为false .setidtype(table_idtype) .setenablecache(false)// xml 二级缓存 .setauthor(author) .setbaseresultmap(true)// xml resultmap .setbasecolumnlist(false)// xml columlist .setoutputdir(project_generate_disk + "\\java" ) .setfileoverride(true) .setcontrollername("%scontroller" );//自定义文件命名,注意 %s 会自动填充表实体属性! if (!service_class_name_start_withi) { config.setservicename("%sservice" ); } return config; } /** * 数据源配置 */ private static datasourceconfig daosourcegenerate() { datasourceconfig datasourceconfig = new datasourceconfig(); dbtype type = dbtype.mysql; datasourceconfig.setdbtype(type)//数据库类型 .seturl(db_url)//数据库地址 .setusername(user)//数据库用户名 .setpassword(password)//数据库密码 .setdrivername(driver_class_name)//实例名 .setschemaname(schema); return datasourceconfig; } /** * 策略配置 */ private static strategyconfig strategygenerate() { strategyconfig strategyconfig = new strategyconfig(); strategyconfig.setversionfieldname("version" ) .setcapitalmode(true)// 全局大写命名 oracle 注意 .setentitylombokmodel(false) .setnaming(namingstrategy.underline_to_camel)// 表名生成策略 .entitytablefieldannotationenable(enable_table_field_annotation) .setinclude(table_names)//修改替换成你需要的表名,多个表名传数组 .setentitycolumnconstant(true)// 【实体】是否生成字段常量(默认 false)public static final string id = "test_id"; .setentitybuildermodel(true);// 【实体】是否为构建者模型(默认 false)public user setname(string name) {this.name = name; return this;} return strategyconfig; } /** * 自定义模板配置 */ private static templateconfig templategenerate() { templateconfig templateconfig = new templateconfig() .setcontroller("templates/java/controller.java" ) .setservice("templates/java/service.java" ) .setserviceimpl("templates/java/serviceimpl.java" ) .setmapper("templates/java/mapper.java" ); return templateconfig; } private static final string module_name = "sysrolemenu"; private static final string class_name = "sysrolemenu"; private static final string class_name = "sysrolemenu"; /** * 自定义文件及key */ private static injectionconfig filegenerate() { injectionconfig injectionconfig = new injectionconfig() { @override public void initmap() {//自定义参数 map<string, object> map = new hashmap<>(); //这些自定义的值在vm模板的语法是通过${cfg.xxx}来调用的。 map.put("modulename", module_name); map.put("classname", class_name); map.put("classname", class_name); map.put("packagename", parent_package_name + "." + package_name); map.put("author", author); map.put("datetime", new simpledateformat("yyyy-mm-dd hh:mm:ss").format(new date())); this.setmap(map); } }; return injectionconfig; } /** * 包配置 */ public static packageconfig packagegenerate() { packageconfig pc = new packageconfig().setparent("com" ) .setmodulename(package_name) .setcontroller("controller") .setentity("domain") .setmapper("dao") .setxml("mapper"); return pc; } public static void main(string[] args) { //全局配置 globalconfig config = globalgenerate(); //配置数据源 datasourceconfig datasourceconfig = daosourcegenerate(); //配置策略 strategyconfig strategyconfig = strategygenerate(); //配置模板 templateconfig templateconfig = templategenerate(); //自定义值 injectionconfig injectionconfig = filegenerate(); //配置包 packageconfig packageconfig = packagegenerate(); //生成代码 new autogenerator().setglobalconfig(config) .settemplate(templateconfig)//自定义模板路径 .setcfg(injectionconfig) .setdatasource(datasourceconfig) .setstrategy(strategyconfig) .setpackageinfo(packageconfig) .execute(); } }
一定要注意!!!injectionconfig方法中自定义的map返回对象可以返回给模板调用,调用方法是${cfg.xxx}
vm模板代码实例
package ${package.controller}; //这样写是依据步骤2的packageconfig方法配置 import java.util.list; import org.springframework.beans.factory.annotation.autowired; import org.springframework.stereotype.controller; import org.springframework.web.bind.annotation.getmapping; import org.springframework.web.bind.annotation.pathvariable; import org.springframework.web.bind.annotation.postmapping; import org.springframework.web.bind.annotation.requestmapping; import ${package.entity}.${cfg.classname}; import ${package.service}.${cfg.classname}service; import com.rent.model.ajaxresult; /** * ${cfg.modulename}controller * * @author ${author} * @date ${cfg.datetime} */ @controller @requestmapping("/${cfg.modulename}/${cfg.classname}") public class ${cfg.classname}controller extends basecontroller @autowired private ${cfg.classname}service ${cfg.classname}service; /** * 查询${cfg.classname}列表 */ @getmapping("/list") public tabledatainfo list(@requestparam int pagenumber, @requestparam int pagesize) { page<${cfg.classname}> page = ${cfg.classname}service.select${cfg.classname}page(pagenumber, pagesize); return page; } /** * 新增保存${cfg.classname} */ @postmapping("/add${cfg.classname}") public ajaxresult addsave(${cfg.classname} ${cfg.classname}) { boolean ret = ${cfg.classname}service.save(${cfg.classname}); return new ajaxresult(ret, ret ? "成功" : "失败"); } /** * 修改保存${cfg.classname} */ @postmapping("/edit") public ajaxresult editsave(${cfg.classname} ${cfg.classname}) { boolean ret = ${cfg.classname}service.updatebyid(${cfg.classname}); return new ajaxresult(ret, ret ? "成功" : "失败"); } @postmapping("deletebyid") @apioperation("根据id删除${cfg.classname}") public ajaxresult<${cfg.classname}> deletebyid(long id) { boolean ret = ${cfg.classname}service.removebyid(id); return new ajaxresult(true, ret ? "成功" : "失败"); } @postmapping("findbyid") @apioperation("根据id查询${cfg.classname}") public ajaxresult<${cfg.classname}> findbyid(long id) { ${cfg.classname} user = ${cfg.classname}service.getbyid(id); return new ajaxresult(true, "成功", user); } }
最后如果需要更详细的vm调用请参阅官方文档:
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