mybatis-plus使用Velocity格式模板生成代码

桃扇骨 2022-04-24 01:58 376阅读 0赞

### 第一步 引入所需pom文件 ###

<dependency>
    			<groupId>mysql</groupId>
    			<artifactId>mysql-connector-java</artifactId>
    			<scope>runtime</scope>
    		</dependency>
    		
    		<dependency>
    			<groupId>org.projectlombok</groupId>
    			<artifactId>lombok</artifactId>
    			<optional>true</optional>
    		</dependency>
    		
    		<dependency>
    			<groupId>com.baomidou</groupId>
    			<artifactId>mybatis-plus-boot-starter</artifactId>
    			<version>3.1.0</version>
    		</dependency>
    		
    		<dependency>
    			<groupId>com.baomidou</groupId>
    			<artifactId>mybatis-plus-generator</artifactId>
    			<version>3.1.0</version>
    		</dependency>
    		
    		<dependency>
    			<groupId>com.alibaba</groupId>
    			<artifactId>druid-spring-boot-starter</artifactId>
    			<version>1.1.10</version>
    		</dependency>
    		<dependency>
                <groupId>commons-io</groupId>
                <artifactId>commons-io</artifactId>
                <version>2.6</version>
            </dependency>
    		<dependency>
                <groupId>org.apache.commons</groupId>
                <artifactId>commons-lang3</artifactId>
            </dependency>
    		
    		<dependency>
    			<groupId>org.apache.velocity</groupId>
    			<artifactId>velocity</artifactId>
    			<version>1.7</version>
    		</dependency>
    		
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-test</artifactId>
    			<scope>test</scope>
    		</dependency>

### 第二步 配置application.yml ###

server:
      port: 8089
    
    #默认使用配置
    spring:
      profiles:
        active: dev
    
    #公共配置与profiles选择无关 mapperLocations指的路径是src/main/resources
    #公共配置与profiles选择无关
    mybatis-plus:
      typeAliasesPackage: com.example.demo
      mapperLocations: classpath:mapper/*.xml
    
    ---
    
    #开发配置
    spring:
      profiles: dev
    
      datasource:
        url: jdbc:mysql://ip:port/beadwalletloan?autoReconnect=true&useUnicode=true&zeroDateTimeBehavior=convertToNull&useServerPrepStmts=false&rewriteBatchedStatements=true&serverTimezone=GMT%2B8
        username: username
        password: password
        driverClassName: com.mysql.jdbc.Driver
        # 使用druid数据源
        type: com.alibaba.druid.pool.DruidDataSource
        # 配置获取连接等待超时的时间
        # 下面为连接池的补充设置，应用到上面所有数据源中
        # 初始化大小，最小，最大
        initialSize: 1
        minIdle: 3
        maxActive: 20
        # 配置获取连接等待超时的时间
        maxWait: 60000
        # 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒
        timeBetweenEvictionRunsMillis: 60000
        # 配置一个连接在池中最小生存的时间，单位是毫秒
        minEvictableIdleTimeMillis: 30000
        validationQuery: select 'x'
        testWhileIdle: true
        testOnBorrow: false
        testOnReturn: false
        # 打开PSCache，并且指定每个连接上PSCache的大小
        poolPreparedStatements: true
        maxPoolPreparedStatementPerConnectionSize: 20
        # 配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙
        filters: stat,wall,slf4j
        # 通过connectProperties属性来打开mergeSql功能；慢SQL记录
        connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
        # 合并多个DruidDataSource的监控数据
        useGlobalDataSourceStat: true

### 第三步 配置数据源 ###

DatasourceConfig.java

package com.example.demo.config;
    
    import java.sql.SQLException;
    
    import javax.sql.DataSource;
    
    import org.springframework.beans.factory.annotation.Value;
    import org.springframework.boot.context.properties.ConfigurationProperties;
    import org.springframework.boot.web.servlet.FilterRegistrationBean;
    import org.springframework.boot.web.servlet.ServletRegistrationBean;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.context.annotation.Primary;
    
    import com.alibaba.druid.pool.DruidDataSource;
    import com.alibaba.druid.support.http.StatViewServlet;
    import com.alibaba.druid.support.http.WebStatFilter;
    
    import lombok.extern.log4j.Log4j2;
    
    @Log4j2
    @Configuration
    public class DatasourceConfig {
        @Value("${spring.datasource.url}")
        private String url;
        @Value("${spring.datasource.username}")
        private String username;
        @Value("${spring.datasource.password}")
        private String password;
        @Value("${spring.datasource.driverClassName}")
        private String driverClassName;
        @Value("${spring.datasource.initialSize}")
        private int initialSize;
        @Value("${spring.datasource.minIdle}")
        private int minIdle;
        @Value("${spring.datasource.maxActive}")
        private int maxActive;
        @Value("${spring.datasource.maxWait}")
        private int maxWait;
        @Value("${spring.datasource.timeBetweenEvictionRunsMillis}")
        private int timeBetweenEvictionRunsMillis;
        @Value("${spring.datasource.minEvictableIdleTimeMillis}")
        private int minEvictableIdleTimeMillis;
        @Value("${spring.datasource.validationQuery}")
        private String validationQuery;
        @Value("${spring.datasource.testWhileIdle}")
        private boolean testWhileIdle;
        @Value("${spring.datasource.testOnBorrow}")
        private boolean testOnBorrow;
        @Value("${spring.datasource.testOnReturn}")
        private boolean testOnReturn;
        @Value("${spring.datasource.poolPreparedStatements}")
        private boolean poolPreparedStatements;
        @Value("${spring.datasource.maxPoolPreparedStatementPerConnectionSize}")
        private int maxPoolPreparedStatementPerConnectionSize;
        @Value("${spring.datasource.filters}")
        private String filters;
        @Value("${spring.datasource.connectionProperties}")
        private String connectionProperties;
        @Value("${spring.datasource.useGlobalDataSourceStat}")
        private boolean useGlobalDataSourceStat;
        
        @Bean
        @Primary
        public DataSource dataSource() {
            DruidDataSource datasource = new DruidDataSource();
     
            datasource.setUrl(url);
            datasource.setUsername(username);
            datasource.setPassword(password);   //这里可以做加密处理
            datasource.setDriverClassName(driverClassName);
     
            //configuration
            datasource.setInitialSize(initialSize);
            datasource.setMinIdle(minIdle);
            datasource.setMaxActive(maxActive);
            datasource.setMaxWait(maxWait);
            datasource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
            datasource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
            datasource.setValidationQuery(validationQuery);
            datasource.setTestWhileIdle(testWhileIdle);
            datasource.setTestOnBorrow(testOnBorrow);
            datasource.setTestOnReturn(testOnReturn);
            datasource.setPoolPreparedStatements(poolPreparedStatements);
            datasource.setMaxPoolPreparedStatementPerConnectionSize(maxPoolPreparedStatementPerConnectionSize);
            datasource.setUseGlobalDataSourceStat(useGlobalDataSourceStat);
            try {
                datasource.setFilters(filters);
            } catch (SQLException e) {
     
            }
            datasource.setConnectionProperties(connectionProperties);
     
            return datasource;
        }
     
     
        @Bean
        public ServletRegistrationBean druidServlet() {
            log.info("init Druid Servlet Configuration ");
            ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(), "/druid/*");
            // IP白名单
           // servletRegistrationBean.addInitParameter("allow", "192.168.2.25,127.0.0.1");
            // IP黑名单(共同存在时，deny优先于allow)
            //servletRegistrationBean.addInitParameter("deny", "192.168.1.100");
            //控制台管理用户
            servletRegistrationBean.addInitParameter("loginUsername", "admin");
            servletRegistrationBean.addInitParameter("loginPassword", "9527");
            //是否能够重置数据 禁用HTML页面上的“Reset All”功能
            servletRegistrationBean.addInitParameter("resetEnable", "false");
            return servletRegistrationBean;
        }
     
        @Bean
        public FilterRegistrationBean filterRegistrationBean() {
            FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter());
            filterRegistrationBean.addUrlPatterns("/*");
            filterRegistrationBean.addInitParameter("exclusions", "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
            return filterRegistrationBean;
        }
    }

### 第四步 配置模板 ###

实体类模板

Entity.java.vm

package ${package}.entity;
    
    import com.baomidou.mybatisplus.annotation.FieldFill;
    import com.baomidou.mybatisplus.annotation.IdType;
    import com.baomidou.mybatisplus.annotation.TableField;
    import com.baomidou.mybatisplus.annotation.TableId;
    import com.baomidou.mybatisplus.annotation.TableName;
    #foreach ($column in $columns)
    #if($column.attrType == 'LocalDate')
    import java.time.LocalDate;
    #break
    #end
    #end
    #foreach ($column in $columns)
    #if($column.attrType == 'LocalDateTime')
    import java.time.LocalDateTime;
    import com.alibaba.fastjson.annotation.JSONField;
    #break
    #end
    #end
    import lombok.Data;
    /**
     * Module: ${className}.java
     *
     * @author ${author}
     * @since JDK ${jdk}
     * @version ${version}
     * @date ${date}
     * @Descriptions:
     */
    @Data
    @TableName(value = "${tableName}")
    public class ${className}  {
    	
    #foreach ($column in $columns)
    	/** $column.comments */
    #if ("id" == $column.attrname)
    	@TableId(value = "id", type = IdType.AUTO)
    #end 
    #if ("createTime" == $column.attrname)
    	@TableField(fill = FieldFill.INSERT)
    #end 
    #if ("updateTime" == $column.attrname)
    	@TableField(fill = FieldFill.INSERT_UPDATE)
    #end 
    #if ("date" == $column.dataType)
    	@JSONField(format = "yyyy-MM-dd")
    #end 
    #if ("datetime" == $column.dataType)
    	@JSONField(format = "yyyy-MM-dd HH:mm:ss")
    #end 
    	private $column.attrType $column.attrname;
    #end
    }

配置service

Service.java.vm

package ${package}.service;
    
    import ${package}.entity.${className};
    import com.baomidou.mybatisplus.extension.service.IService;
    /**
     * Module: ${className}.java
     * 
     * @author ${author}
     * @since JDK ${jdk}
     * @version ${version}
     * @date ${date}
     * @Descriptions:
     */
    public interface ${className}Service extends IService<${className}> {
    }

配置serviceImpl

ServiceImpl.java.vm

package ${package}.service.impl;
    
    import org.springframework.stereotype.Service;
    import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
    import ${package}.entity.${className};
    import ${package}.service.${className}Service;
    import ${package}.mapper.${className}Mapper;
    
    /**
     * Module: ${className}.java
     * 
     * @author ${author}
     * @since JDK ${jdk}
     * @version ${version}
     * @date ${date}
     * @Descriptions:
     */
    @Service
    public class ${className}ServiceImpl extends ServiceImpl<${className}Mapper, ${className}> implements ${className}Service {
    
    }

### 第五步 配置类型转换 ###

CommonMap.java

package com.example.demo.generator;
    
    import java.util.HashMap;
    import java.util.Map;
    
    public class CommonMap {
    	/** 状态编码转换 */
    	public static Map<String, String> javaTypeMap = new HashMap<String, String>();
    
    	static {
    		initJavaTypeMap();
    	}
    
    	/**
    	 * 返回状态映射
    	 */
    	public static void initJavaTypeMap() {
    		javaTypeMap.put("tinyint", "Integer");
    		javaTypeMap.put("smallint", "Integer");
    		javaTypeMap.put("mediumint", "Integer");
    		javaTypeMap.put("int", "Integer");
    		javaTypeMap.put("integer", "integer");
    		javaTypeMap.put("bigint", "Long");
    		javaTypeMap.put("float", "Float");
    		javaTypeMap.put("double", "Double");
    		javaTypeMap.put("decimal", "Double");
    		// javaTypeMap.put("decimal", "BigDecimal");
    		javaTypeMap.put("bit", "Boolean");
    		javaTypeMap.put("char", "String");
    		javaTypeMap.put("varchar", "String");
    		javaTypeMap.put("tinytext", "String");
    		javaTypeMap.put("text", "String");
    		javaTypeMap.put("mediumtext", "String");
    		javaTypeMap.put("longtext", "String");
    		javaTypeMap.put("time", "LocalDateTime");
    		javaTypeMap.put("date", "LocalDate");
    		javaTypeMap.put("datetime", "LocalDateTime");
    		javaTypeMap.put("timestamp", "LocalDateTime");
    
    		javaTypeMap.put("tablePrefix", "");// 前缀
    		javaTypeMap.put("package", "com.waterelephant.common");//包名
    		javaTypeMap.put("author", "yueyiming");//作者
    		javaTypeMap.put("jdk", "1.8");
    		javaTypeMap.put("version", "1.0");
    	}
    }

### 第六步 配置table实体类 ###

TableEntity .java

package com.example.demo.generator;
    
    import java.util.List;
    
    public class TableEntity {
    	// 表的名称
    	private String tableName;
    	// 表的备注
    	private String comments;
    	// 表的主键
    	private ColumnEntity pk;
    	// 表的列名(不包含主键)
    	private List<ColumnEntity> columns;
    
    	// 类名(第一个字母大写)，如：sys_user => SysUser
    	private String className;
    	// 类名(第一个字母小写)，如：sys_user => sysUser
    	private String classname;
    
    	public String getTableName() {
    		return tableName;
    	}
    
    	public void setTableName(String tableName) {
    		this.tableName = tableName;
    	}
    
    	public String getComments() {
    		return comments;
    	}
    
    	public void setComments(String comments) {
    		this.comments = comments;
    	}
    
    	public ColumnEntity getPk() {
    		return pk;
    	}
    
    	public void setPk(ColumnEntity pk) {
    		this.pk = pk;
    	}
    
    	public List<ColumnEntity> getColumns() {
    		return columns;
    	}
    
    	public void setColumns(List<ColumnEntity> columns) {
    		this.columns = columns;
    	}
    
    	public String getClassName() {
    		return className;
    	}
    
    	public void setClassName(String className) {
    		this.className = className;
    	}
    
    	public String getClassname() {
    		return classname;
    	}
    
    	public void setClassname(String classname) {
    		this.classname = classname;
    	}
    }

### 第七步 配置Column实体类 ###

ColumnEntity 实体类

package com.example.demo.generator;
    
    public class ColumnEntity {
    	// 列名
    	private String columnName;
    	// 列名类型
    	private String dataType;
    	// 列名备注
    	private String comments;
    
    	// 属性名称(第一个字母大写)，如：user_name => UserName
    	private String attrName;
    	// 属性名称(第一个字母小写)，如：user_name => userName
    	private String attrname;
    	// 属性类型
    	private String attrType;
    	// auto_increment
    	private String extra;
    
    	public String getColumnName() {
    		return columnName;
    	}
    
    	public void setColumnName(String columnName) {
    		this.columnName = columnName;
    	}
    
    	public String getDataType() {
    		return dataType;
    	}
    
    	public void setDataType(String dataType) {
    		this.dataType = dataType;
    	}
    
    	public String getComments() {
    		return comments;
    	}
    
    	public void setComments(String comments) {
    		this.comments = comments;
    	}
    
    	public String getAttrname() {
    		return attrname;
    	}
    
    	public void setAttrname(String attrname) {
    		this.attrname = attrname;
    	}
    
    	public String getAttrName() {
    		return attrName;
    	}
    
    	public void setAttrName(String attrName) {
    		this.attrName = attrName;
    	}
    
    	public String getAttrType() {
    		return attrType;
    	}
    
    	public void setAttrType(String attrType) {
    		this.attrType = attrType;
    	}
    
    	public String getExtra() {
    		return extra;
    	}
    
    	public void setExtra(String extra) {
    		this.extra = extra;
    	}
    }

### 第八步 配置所需查询mapper ###

GenMapper

package com.example.demo.mapper;
    
    import java.util.List;
    import java.util.Map;
    
    import org.apache.ibatis.annotations.Select;
    
    public interface GenMapper {
    
    	@Select("select table_name tableName, engine, table_comment tableComment, create_time createTime from information_schema.tables  where table_schema = (SELECT DATABASE()) and table_name = #{tableName}")
    	Map<String, Object> queryTable(String tableName);
    
    	@Select("select column_name columnName, data_type dataType, column_comment columnComment, column_key columnKey, extra from information_schema.columns  where table_name =#{tableName} and table_schema = (SELECT DATABASE())  order by ordinal_position")
    	List<Map<String, Object>> queryColumns(String tableName);
    
    	@Select("select table_name tableName from information_schema.tables  where table_schema = (SELECT DATABASE())")
    	List<String> queryAllTable();
    }

### 第九步 生成代码工具类 ###

GenUtils.java

package com.example.demo.generator;
    
    import java.io.File;
    import java.io.IOException;
    import java.io.StringWriter;
    import java.text.SimpleDateFormat;
    import java.util.ArrayList;
    import java.util.Date;
    import java.util.HashMap;
    import java.util.List;
    import java.util.Map;
    import java.util.Properties;
    import java.util.zip.ZipEntry;
    import java.util.zip.ZipOutputStream;
    
    import org.apache.commons.io.IOUtils;
    import org.apache.commons.lang.WordUtils;
    import org.apache.commons.lang3.StringUtils;
    import org.apache.velocity.Template;
    import org.apache.velocity.VelocityContext;
    import org.apache.velocity.app.Velocity;
    
    public class GenUtils {
    	/** 时间格式(yyyy-MM-dd) */
    	public final static String DATE_PATTERN = "yyyy-MM-dd";
    	/** 时间格式(yyyy-MM-dd HH:mm:ss) */
    	public final static String DATE_TIME_PATTERN = "yyyy-MM-dd HH:mm:ss";
    
    	public static String format(Date date) {
    		return format(date, DATE_PATTERN);
    	}
    
    	public static String format(Date date, String pattern) {
    		if (date != null) {
    			SimpleDateFormat df = new SimpleDateFormat(pattern);
    			return df.format(date);
    		}
    		return null;
    	}
    
    	public static List<String> getTemplates() {
    		List<String> templates = new ArrayList<>();
    		templates.add("vm/Entity.java.vm");
    		templates.add("vm/Service.java.vm");
    		templates.add("vm/ServiceImpl.java.vm");
    		templates.add("vm/Mapper.java.vm");
    		return templates;
    	}
    
    	/**
    	 * 生成代码
    	 */
    	public static void generatorCode(Map<String, Object> table, List<Map<String, Object>> columns, ZipOutputStream zip) {
    		// 表信息
    		TableEntity tableEntity = new TableEntity();
    		tableEntity.setTableName(table.get("tableName") + "");
    		tableEntity.setComments(table.get("tableComment") + "");
    		// 表名转换成Java类名
    		String className = tableToJava(tableEntity.getTableName(), CommonMap.javaTypeMap.get("tablePrefix"));
    		tableEntity.setClassName(className);
    		tableEntity.setClassname(StringUtils.uncapitalize(className));
    		// 列信息
    		List<ColumnEntity> columsList = new ArrayList<>();
    		for (Map<String, Object> column : columns) {
    			ColumnEntity columnEntity = new ColumnEntity();
    			columnEntity.setColumnName(column.get("columnName") + "");
    			columnEntity.setDataType(column.get("dataType") + "");
    			columnEntity.setComments(column.get("columnComment") + "");
    			columnEntity.setExtra(column.get("extra") + "");
    
    			// 列名转换成Java属性名
    			String attrName = columnToJava(columnEntity.getColumnName());
    			columnEntity.setAttrName(attrName);
    			columnEntity.setAttrname(StringUtils.uncapitalize(attrName));
    
    			// 列的数据类型，转换成Java类型
    			String attrType = CommonMap.javaTypeMap.get(columnEntity.getDataType());
    			attrType = StringUtils.isBlank(attrType) ? "unknowType" : attrType;
    			columnEntity.setAttrType(attrType);
    
    			// 是否主键
    			if ("PRI".equalsIgnoreCase(column.get("columnKey") + "") && tableEntity.getPk() == null) {
    				tableEntity.setPk(columnEntity);
    			}
    			columsList.add(columnEntity);
    		}
    		tableEntity.setColumns(columsList);
    
    		// 没主键，则第一个字段为主键
    		if (tableEntity.getPk() == null) {
    			tableEntity.setPk(tableEntity.getColumns().get(0));
    		}
    
    		// 设置velocity资源加载器
    		Properties prop = new Properties();
    		prop.put("file.resource.loader.class", "org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader");
    		Velocity.init(prop);
    
    		// 封装模板数据
    		Map<String, Object> map = new HashMap<>();
    		map.put("tableName", tableEntity.getTableName());
    		map.put("comments", tableEntity.getComments());
    		map.put("pk", tableEntity.getPk());
    		map.put("className", tableEntity.getClassName());
    		map.put("classname", tableEntity.getClassname());
    		map.put("pathName", tableEntity.getClassname().toLowerCase());
    		map.put("columns", tableEntity.getColumns());
    		map.put("package", CommonMap.javaTypeMap.get("package"));
    		map.put("author", CommonMap.javaTypeMap.get("author"));
    		map.put("date", format(new Date(), DATE_PATTERN));
    //		map.put("db", db);
    		map.put("jdk", CommonMap.javaTypeMap.get("jdk"));
    		map.put("version", CommonMap.javaTypeMap.get("version"));
    		VelocityContext context = new VelocityContext(map);
    
    		// 获取模板列表
    		List<String> templates = getTemplates();
    		for (String template : templates) {
    			// 渲染模板
    			StringWriter sw = new StringWriter();
    			Template tpl = Velocity.getTemplate(template, "UTF-8");
    			tpl.merge(context, sw);
    
    			try {
    				// 添加到zip
    				zip.putNextEntry(new ZipEntry(getFileName(template, tableEntity.getClassName(), CommonMap.javaTypeMap.get("package"))));
    				IOUtils.write(sw.toString(), zip, "UTF-8");
    				IOUtils.closeQuietly(sw);
    				zip.closeEntry();
    			} catch (IOException e) {
    				e.printStackTrace();
    			}
    		}
    	}
    
    	/**
    	 * 列名转换成Java属性名
    	 */
    	public static String columnToJava(String columnName) {
    		return WordUtils.capitalizeFully(columnName, new char[] { '_' }).replace("_", "");
    	}
    
    	/**
    	 * 表名转换成Java类名
    	 */
    	public static String tableToJava(String tableName, String tablePrefix) {
    		if (StringUtils.isNotBlank(tablePrefix)) {
    			tableName = tableName.replace(tablePrefix, "");
    		}
    		return columnToJava(tableName);
    	}
    
    	/**
    	 * 获取文件名
    	 */
    	public static String getFileName(String template, String className, String packageName) {
    		String packagePath = "main" + File.separator + "java" + File.separator;
    		if (StringUtils.isNotBlank(packageName)) {
    			packagePath += packageName.replace(".", File.separator) + File.separator;
    		}
    		if (template.contains("Entity.java.vm")) {
    			return packagePath + "entity" + File.separator + className + ".java";
    		}
    		if (template.contains("Service.java.vm")) {
    			return packagePath + "service" + File.separator + className + "Service.java";
    		}
    		if (template.contains("ServiceImpl.java.vm")) {
    			return packagePath + "service" + File.separator + "impl" + File.separator + className + "ServiceImpl.java";
    		}
    		if (template.contains("Mapper.java.vm")) {
    			return packagePath + "mapper" + File.separator + className + "Mapper.java";
    		}
    		return null;
    	}
    
    }

### 第十步：查询所有表，调用生成工具类 ###

GenComp.java

package com.example.demo.generator;
    
    import java.io.ByteArrayOutputStream;
    import java.util.List;
    import java.util.Map;
    import java.util.zip.ZipOutputStream;
    
    import org.apache.commons.io.IOUtils;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Component;
    
    import com.example.demo.mapper.GenMapper;
    
    
    @Component
    public class GenComp {
    
    	@Autowired
    	GenMapper genMapper;
    
    	/**
    	 * 生成所有表
    	 * @return
    	 */
    	public byte[] generatorCode() {
    		 List<String> tableNames=genMapper.queryAllTable();
    		 return generatorCode(tableNames);
    	}
    	/**
    	 * 生成指定表
    	 * @param tableNames
    	 * @return
    	 */
    	public byte[] generatorCode( List<String> tableNames) {
    		ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
    		ZipOutputStream zip = new ZipOutputStream(outputStream);
    		for (String tableName : tableNames) {
    			Map<String, Object> table = genMapper.queryTable(tableName);
    			List<Map<String, Object>> columns = genMapper.queryColumns(tableName);
    			GenUtils.generatorCode( table, columns, zip);
    		}
    		IOUtils.closeQuietly(zip);
    		return outputStream.toByteArray();
    	}
    
    }

### 测试 ###

package com.example.demo;
    
    import java.io.File;
    import java.io.IOException;
    
    import org.apache.commons.io.FileUtils;
    import org.junit.Test;
    import org.junit.runner.RunWith;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.boot.test.context.SpringBootTest;
    import org.springframework.test.context.junit4.SpringRunner;
    
    import com.example.demo.generator.GenComp;
    
    @SpringBootTest
    @RunWith(SpringRunner.class)
    public class MybatisDemoApplicationTests {
    	@Autowired
    	private GenComp genComp;
    
    	@Test
    	public void test() {
    		 byte[] zipByte = genComp.generatorCode();
             try {
                //生成路径
    			FileUtils.writeByteArrayToFile(new File("C:\\1.zip"), zipByte);
    		} catch (IOException e) {
    			e.printStackTrace();
    		}
    	}
    
    }

测试生成成功

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2h6YXVfaXRkb2c_size_16_color_FFFFFF_t_70][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2h6YXVfaXRkb2c_size_16_color_FFFFFF_t_70 1][]

下面是生成代码截图

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2h6YXVfaXRkb2c_size_16_color_FFFFFF_t_70 2][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2h6YXVfaXRkb2c_size_16_color_FFFFFF_t_70]: /images/20220221/571570e160b74c77a453e9e505de1aae.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2h6YXVfaXRkb2c_size_16_color_FFFFFF_t_70 1]: /images/20220221/31f6a4ec84c449aa96737973b26ff221.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2h6YXVfaXRkb2c_size_16_color_FFFFFF_t_70 2]: /images/20220221/20a50fd8385542b3820235ea854df6c7.png