Java在线代码生成工具，支持JPA、Mybatis、MybatisPlus

【Java代码生成神器】自动化生成Java实体类、代码、增删改查功能！点击访问

推荐一个自己每天都在用的Java代码生成器！这个网站支持在线生成Java代码，包含完整的Controller\Service\Entity\Dao代码，完整的增删改查功能！

还可以自定义自己的代码模板、自由配置高级选项，指定是否集成Lombok和Swagger等常用库，一键生成，省去了大量时间和精力！
快来试试吧！在线地址

一款支持多种ORM框架的Java代码生成器，基于模板引擎实现，具有非常高的自由度，可随意修改为适合你的代码风格
支持JPA、Mybatis、MybatisPlus等ORM框架

以下为开源版本
源码：

• 前端：https://github.com/dengweiping4j/code-generator-ui.git
• 后端：https://github.com/dengweiping4j/CodeGenerator.git

界面展示：

关键代码：

 package com.dwp.codegenerator.utils; import com.dwp.codegenerator.domain.ColumnEntity; import com.dwp.codegenerator.domain.DatabaseColumn; import com.dwp.codegenerator.domain.GeneratorParams; import com.dwp.codegenerator.domain.TableEntity; import org.apache.commons.configuration.Configuration; import org.apache.commons.configuration.ConfigurationException; import org.apache.commons.configuration.PropertiesConfiguration; import org.apache.commons.io.IOUtils; import org.apache.commons.lang.StringUtils; import org.apache.commons.lang.WordUtils; import org.apache.velocity.Template; import org.apache.velocity.VelocityContext; import org.apache.velocity.app.Velocity; import java.io.File; import java.io.IOException; import java.io.StringWriter; import java.util.*; import java.util.zip.ZipEntry; import java.util.zip.ZipOutputStream; public class GeneratorUtil { 
    /** * 生成代码 * * @param generatorParams * @param zip */ public static void generatorCode(GeneratorParams generatorParams, ZipOutputStream zip) { 
    //参数处理 TableEntity tableEntity = formatParams(generatorParams); //设置velocity资源加载器 initVelocity(); //封装模板数据 VelocityContext context = getVelocityContext(generatorParams, tableEntity); //渲染模板 apply(context, zip, tableEntity, generatorParams); } private static void apply(VelocityContext context, ZipOutputStream zip, TableEntity tableEntity, GeneratorParams generatorParams) { 
    List<String> templates = getTemplates(generatorParams.getGeneratorType()); templates.forEach(template -> { 
    StringWriter sw = new StringWriter(); Template tpl = Velocity.getTemplate(template, "UTF-8"); tpl.merge(context, sw); try { 
    String fileName = getFileName(template, tableEntity.getUpperClassName(), generatorParams); //添加到zip zip.putNextEntry(new ZipEntry(fileName)); IOUtils.write(sw.toString(), zip, "UTF-8"); IOUtils.closeQuietly(sw); zip.closeEntry(); } catch (IOException e) { 
    throw new RuntimeException("渲染模板失败，表名：" + tableEntity.getTableName(), e); } }); } /** * 使用自定义模板 * * @param generatorType * @return */ private static List<String> getTemplates(String generatorType) { 
    List<String> templates = new ArrayList<>(); switch (generatorType) { 
    case "jpa": templates.add("template/jpa/Repository.java.vm"); templates.add("template/jpa/Specifications.java.vm"); templates.add("template/jpa/Service.java.vm"); templates.add("template/jpa/Controller.java.vm"); templates.add("template/jpa/Domain.java.vm"); break; case "mybatis": templates.add("template/mybatis/Mapper.java.vm"); templates.add("template/mybatis/Mapper.xml.vm"); templates.add("template/mybatis/Service.java.vm"); templates.add("template/mybatis/ServiceImpl.java.vm"); templates.add("template/mybatis/Controller.java.vm"); templates.add("template/mybatis/Entity.java.vm"); templates.add("template/mybatis/EntityParam.java.vm"); templates.add("template/mybatis/PageResult.java.vm"); templates.add("template/mybatis/RestResp.java.vm"); break; case "mybatis-plus": templates.add("template/mybatis-plus/Mapper.java.vm"); templates.add("template/mybatis-plus/Mapper.xml.vm"); templates.add("template/mybatis-plus/Service.java.vm"); templates.add("template/mybatis-plus/ServiceImpl.java.vm"); templates.add("template/mybatis-plus/Controller.java.vm"); templates.add("template/mybatis-plus/Entity.java.vm"); templates.add("template/mybatis-plus/EntityParam.java.vm"); templates.add("template/mybatis-plus/PageResult.java.vm"); templates.add("template/mybatis-plus/RestResp.java.vm"); break; } return templates; } private static String getPackagePath(GeneratorParams generatorParams) { 
    //配置信息 Configuration config = getConfig(); String packageName = StringUtils.isNotBlank(generatorParams.getPackageName()) ? generatorParams.getPackageName() : config.getString("package"); String moduleName = StringUtils.isNotBlank(generatorParams.getModuleName()) ? generatorParams.getModuleName() : config.getString("moduleName"); String packagePath = "main" + File.separator + "java" + File.separator; if (StringUtils.isNotBlank(packageName)) { 
    packagePath += packageName.replace(".", File.separator) + File.separator + moduleName + File.separator; } return packagePath; } private static VelocityContext getVelocityContext(GeneratorParams generatorParams, TableEntity tableEntity) { 
    Configuration config = getConfig(); Map<String, Object> map = new HashMap<>(); map.put("generatorType", generatorParams.getGeneratorType()); map.put("tableName", tableEntity.getTableName()); map.put("comments", tableEntity.getComments()); map.put("pk", tableEntity.getPk()); map.put("className", tableEntity.getUpperClassName()); map.put("classname", tableEntity.getLowerClassName()); map.put("pathName", tableEntity.getLowerClassName().toLowerCase()); map.put("columns", tableEntity.getColumns()); map.put("mainPath", StringUtils.isBlank(config.getString("mainPath")) ? "com.dwp" : config.getString("mainPath")); map.put("package", StringUtils.isNotBlank(generatorParams.getPackageName()) ? generatorParams.getPackageName() : config.getString("package")); map.put("moduleName", StringUtils.isNotBlank(generatorParams.getModuleName()) ? generatorParams.getModuleName() : config.getString("moduleName")); map.put("author", StringUtils.isNotBlank(generatorParams.getAuthor()) ? generatorParams.getAuthor() : config.getString("author")); map.put("email", config.getString("email")); map.put("datetime", DateUtils.format(new Date(), DateUtils.DATE_TIME_PATTERN)); VelocityContext context = new VelocityContext(map); return context; } private static void initVelocity() { 
    Properties prop = new Properties(); prop.put("file.resource.loader.class", "org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader"); Velocity.init(prop); } /** * 表、字段参数处理 * * @param generatorParams * @return */ private static TableEntity formatParams(GeneratorParams generatorParams) { 
    TableEntity tableEntity = new TableEntity(); //表信息 setTableEntity(tableEntity, generatorParams); //设置列信息 setColumns(tableEntity, generatorParams); //没主键，则第一个字段为主键 if (tableEntity.getPk() == null) { 
    tableEntity.setPk(tableEntity.getColumns().get(0)); } return tableEntity; } private static void setColumns(TableEntity tableEntity, GeneratorParams generatorParams) { 
    List<ColumnEntity> columnsList = new ArrayList<>(); for (DatabaseColumn column : generatorParams.getColumns()) { 
    ColumnEntity columnEntity = new ColumnEntity(); columnEntity.setColumnName(column.getColumnName()); //列名转换成Java属性名 String attrName = columnToJava(column.getColumnName()); columnEntity.setUpperAttrName(attrName); columnEntity.setLowerAttrName(StringUtils.uncapitalize(attrName)); columnEntity.setComments(column.getColumnComment()); //列的数据类型，转换成Java类型 Configuration config = getConfig(); String attrType = config.getString(column.getColumnType(), "unknowType"); columnEntity.setAttrType(attrType); //是否主键 if (column.isPrimary()) { 
    tableEntity.setPk(columnEntity); } columnsList.add(columnEntity); } tableEntity.setColumns(columnsList); } private static void setTableEntity(TableEntity tableEntity, GeneratorParams generatorParams) { 
    tableEntity.setTableName(generatorParams.getTableName()); tableEntity.setComments(generatorParams.getTableComment()); //表名转换成Java类名 Configuration config = getConfig(); String className = tableToJava(tableEntity.getTableName(), config.getString("tablePrefix")); tableEntity.setUpperClassName(className); tableEntity.setLowerClassName(StringUtils.uncapitalize(className)); } /** * 列名转换成Java属性名 */ private static String columnToJava(String columnName) { 
    return WordUtils.capitalizeFully(columnName, new char[]{ 
   '_'}).replace("_", ""); } /** * 表名转换成Java类名 */ private static String tableToJava(String tableName, String tablePrefix) { 
    if (StringUtils.isNotBlank(tablePrefix)) { 
    tableName = tableName.replaceFirst(tablePrefix, ""); } return columnToJava(tableName); } /** * 获取配置信息 */ private static Configuration getConfig() { 
    try { 
    return new PropertiesConfiguration("generator.properties"); } catch (ConfigurationException e) { 
    throw new RuntimeException("获取配置文件失败，", e); } } /** * 获取文件名 */ private static String getFileName(String templateName, String className, GeneratorParams generatorParams) { 
    String packagePath = getPackagePath(generatorParams); if (StringUtils.isNotBlank(templateName)) { 
    String afterClassName = templateName.substring(templateName.lastIndexOf("/") + 1, templateName.indexOf(".")); if (templateName.contains("template/jpa/Specifications.java.vm")) { 
    return packagePath + "repository" + File.separator + className + "Specifications.java"; } if (templateName.endsWith("Mapper.xml.vm")) { 
    return packagePath + afterClassName.toLowerCase() + File.separator + className + afterClassName + ".xml"; } if (templateName.contains("template/jpa/Domain.java.vm") || templateName.endsWith("Entity.java.vm")) { 
    return packagePath + afterClassName.toLowerCase() + File.separator + className + ".java"; } if (templateName.endsWith("EntityParam.java.vm")) { 
    return packagePath + "entity/param" + File.separator + className + "Param.java"; } if (templateName.endsWith("ServiceImpl.java.vm")) { 
    return packagePath + "service/impl" + File.separator + className + afterClassName + ".java"; } if (templateName.endsWith("PageResult.java.vm")) { 
    return packagePath + "util" + File.separator + "PageResult.java"; } if (templateName.endsWith("RestResp.java.vm")) { 
    return packagePath + "util" + File.separator + "RestResp.java"; } return packagePath + afterClassName.toLowerCase() + File.separator + className + afterClassName + ".java"; } return null; } } 

项目地址：
前端：https://github.com/dengweiping4j/code-generator-ui.git
后端：https://github.com/dengweiping4j/CodeGenerator.git

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Java在线代码生成工具，支持JPA、Mybatis、MybatisPlus分享到此就结束了，感谢您的阅读。