根据实体类生成持久层、控制层、服务层、实现层

客官°小女子只卖身不卖艺 2022-03-20 09:56 336阅读 0赞

###### 最近写个java web 程序，用的spring boot、spring data jpa ######

由于数据库表较多、逆向工程生成的实体类也比较多，重复性工作就很多也很枯燥，今天把重复部分提取出来，用代码自动生成 **repository层（dao层）、controller层、service 和 service.impl** 中的所有基本文件, 有兴趣的可以加上基本的包装。

###### 意义：让程序猿更专注于写业务逻辑、而不是重复性的工作 ######

###### 效果： ######

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM1NDI1MDcw_size_16_color_FFFFFF_t_70]

## 废话不多说，上代码 ##

import os
    import time
    
    """ 用途：根据实体类，创建最基本的持久层、服务层、服务层实现类 (repository、service、serviceImpl) 作者：刘颜铭 默认编码 utf8 """
    
    
    packgeName = 'msgc'
    
    entityDir = 'G:/files/项目_代码/msgCollect/src/main/java/com/' + packgeName + '/entity/'
    
    aimDir = 'F:/autoG/'
    
    repositoryText = """package com.--PACKGENAME--.repository; import org.springframework.data.jpa.repository.JpaRepository; import com.--PACKGENAME--.entity.--ENTITYNAME--; /** * Description: DAO. * Deal directly with the database, * if you customize the query, take the index first * * Please follow the prefix convention below * * getOne ------------ getXXX * getMultiple ------- listXXX * count ------------- countXXX * getOne ------------ getXXX * insert ------------ saveXXX * delete ------------ deleteXXX * modify ------------ updateXXX * */ public interface I--ENTITYNAME--Repository extends JpaRepository<--ENTITYNAME--, Integer> { } """
    
    serviceText = """package com.--PACKGENAME--.service; import com.--PACKGENAME--.entity.--ENTITYNAME--; public interface I--ENTITYNAME--Service { } """
    
    serviceImplText = """package com.--PACKGENAME--.service.impl; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import com.--PACKGENAME--.entity.--ENTITYNAME--; import com.--PACKGENAME--.repository.I--ENTITYNAME--Repository; import com.--PACKGENAME--.service.I--ENTITYNAME--Service; /** * Type: --ENTITYNAME--ServiceImpl * Description: serviceImp * @author LYM */ @Service public class --ENTITYNAME--ServiceImpl implements I--ENTITYNAME--Service{ private I--ENTITYNAME--Repository --SMALLENTITYNAME--Repository; @Autowired public void set--ENTITYNAME--Repositry(I--ENTITYNAME--Repository --SMALLENTITYNAME--Repositry) { this.--SMALLENTITYNAME--Repository = --SMALLENTITYNAME--Repositry; } } """
    
    controllerText="""package com.--PACKGENAME--.controller; 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.PostMapping; import com.--PACKGENAME--.entity.--ENTITYNAME--; import com.--PACKGENAME--.service.I--ENTITYNAME--Service; /** *Type: --ENTITYNAME--Controller * Description: * @author LMM */ @Controller public class --ENTITYNAME--Controller { @Autowired private I--ENTITYNAME--Service --SMALLENTITYNAME--Service; } """
    
    def makeSureDir(dir):
        if not os.path.exists(dir):
            os.makedirs(dir)
            
    makeSureDir(aimDir)
    
    def generateRepository(entityName, aimPath):
        makeSureDir(aimPath)
        repositoryName = 'I' + entityName + 'Repository'
        filePath = aimPath + repositoryName + '.java'
        fileHandle = open (filePath, 'w', encoding='utf-8')
        text = repositoryText.replace('--PACKGENAME--', packgeName)
        text = text.replace('--ENTITYNAME--', entityName)
        fileHandle.write(text)
        fileHandle.close()
        
        #repository
        
    def generateService(entityName, aimPath):
        makeSureDir(aimPath)
        serviceName = 'I' + entityName + 'Service'
        serviceFilePath = aimPath + serviceName + '.java'
        fileHandle = open (serviceFilePath, 'w', encoding='utf-8')
        text = serviceText.replace('--PACKGENAME--', packgeName)
        text = text.replace('--ENTITYNAME--', entityName)
        fileHandle.write(text)
        fileHandle.close()
        
    def generateServiceImpl(entityName, aimPath):
        makeSureDir(aimPath)
        serviceImplName = entityName + 'ServiceImpl'
        serviceImplFilePath = aimPath + serviceImplName + '.java'
        fileHandle = open (serviceImplFilePath, 'w', encoding='utf-8')
        text = serviceImplText.replace('--PACKGENAME--', packgeName)
        text = text.replace('--ENTITYNAME--', entityName)
        text = text.replace('--SMALLENTITYNAME--', entityName.lower())
        fileHandle.write(text)
        fileHandle.close()    
    
    def generateController(entityName, aimPath):
        makeSureDir(aimPath)
        controllerName = entityName + 'Controller'
        controllerFilePath = aimPath + controllerName + '.java'
        fileHandle = open (controllerFilePath, 'w', encoding='utf-8')
        text = controllerText.replace('--PACKGENAME--', packgeName)
        text = text.replace('--ENTITYNAME--', entityName)
        text = text.replace('--SMALLENTITYNAME--', entityName.lower())
        fileHandle.write(text)
        fileHandle.close()
    
        
    count = 0    
    list = os.listdir(entityDir) #列出文件夹下所有的目录与文件
    time_start=time.time()
    for i in range(0,len(list)):
        path = os.path.join(entityDir,list[i])
        #找到所有实体类
        if os.path.isfile(path) and "java" == os.path.basename(path).split(".")[-1]:
            entityName = os.path.basename(path).split(".")[0]
            print('emtity--' + entityName + '-- is generating...........')
            generateRepository(entityName, aimDir + 'repository/')
            print('finish repository')
            generateService(entityName, aimDir + 'service/')
            print('finish service')
            generateServiceImpl(entityName, aimDir + 'service/impl/')    
            print('finish serviceImpl')
            generateController(entityName, aimDir + 'controller/')
            print('finish controller')
            count = count + 1
    time_end=time.time()
    print()
    print("-----------------------")
    print()
    print("完成! 共创建 " + str(count * 4) + ' 个java类。耗时共计 %.3f 秒' % (time_end-time_start))

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