我的SSM 代码生成工具

SSM项目做得的多了，你就会发现大部分代码千篇一律，我一般都是通过工具生成这些CRUD代码，然后再编写业务代码，下面分享一下我开发的代码生成工具：

实现效果：

数据库设计好表结构或者修改表结构之后，通过此工具生成ORM层代码，service层代码，以及controller层代码。其中service 和 controller 层代码，只生成一次，避免自己写业务逻辑被覆盖。ORM层代码会覆盖。因此，ORM层的代码我分为自动生成的文件和手写的文件。

生成的代码如下：

Controller 层：

package com.jjp.api;

import java.lang.Integer;import java.lang.Object;import java.lang.String;
import java.util.Date;
import java.util.List;
import java.util.Map;
import javax.validation.Valid;

import com.jjp.enums.ErrorTypeEnum;
import com.jjp.enums.NormalStatusEnum;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.WebDataBinder;
import com.jjp.bean.PagingProperties;

import com.jjp.model.Org;
import com.jjp.model.OrgExample;
import com.jjp.service.OrgService;
import com.jjp.api.validator.OrgValidator;
import org.springframework.web.bind.annotation.InitBinder;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;



@Controller
@RequestMapping("/api/v1/org")
public class OrgController extends BaseController {

    @Autowired
    private OrgService orgService;

    @InitBinder(value = "org")
    public void initBinder(WebDataBinder binder) {
        binder.setValidator(new OrgValidator());
    }

    @RequestMapping(method = RequestMethod.POST)
    @ResponseBody
    public Map<String, Object> insert(@Valid @RequestBody Org org, BindingResult result) {
        if (result.hasErrors()) {
            return failedResult(ErrorTypeEnum.VALIDATE_ERROR, result.getAllErrors().get(0).getDefaultMessage());
        }
        org.setCreateDate(new Date());
        org.setStatus(NormalStatusEnum.NORMAL.getByte());
        orgService.insert(org);
        return successResult(org);
    }

    @RequestMapping(value = "{id}", method = RequestMethod.DELETE)
    @ResponseBody
    public Map<String, Object> delete(@PathVariable("id") Integer id) {
        Org delete = new Org();
        delete.setId(id);
//        delete.setStatus(NormalStatusEnum.DELETED.getValue());
        orgService.updateByPrimaryKeySelective(delete);
        return successResult("Ok");
    }

    @RequestMapping(value = "list", method = RequestMethod.GET)
    @ResponseBody
    public Map<String, Object> list(PagingProperties paging) {
        OrgExample exam = new OrgExample();
        if(paging.getNeedPaging()) {
            paging.setTotal(orgService.countByExample(exam));
            exam.setOrderByClause(" id desc " + paging.build());
        }
        List<Org> list = orgService.selectByExample(exam);
        return successPageList(paging,list);
    }

    @RequestMapping(value = "{id}", method = RequestMethod.GET)
    @ResponseBody
    public Map<String, Object> get(@PathVariable("id") Integer id) {
        return successResult(orgService.selectByPrimaryKey(id));
    }

    @RequestMapping(value = "{id}", method = RequestMethod.PUT)
    @ResponseBody
    public Map<String, Object> update(@PathVariable("id") Integer id, @Valid @RequestBody Org org, BindingResult result) {
        if (result.hasErrors()) {
            return failedResult(ErrorTypeEnum.VALIDATE_ERROR, result.getAllErrors().get(0).getDefaultMessage());
        }
        orgService.updateByPrimaryKeySelective(org);
        return successResult("ok");
    }

}

Service 层

import com.jjp.model.Org;
import com.jjp.model.OrgExample;

public interface OrgService extends BaseService<Org, OrgExample, Integer>{

}

impl

package com.jjp.service.impl;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.jjp.dao.OrgMapper;
import com.jjp.model.Org;
import com.jjp.model.OrgExample;
import com.jjp.service.OrgService;

@Service
public class OrgServiceImpl extends BaseServiceImpl<Org, OrgExample, Integer> implements OrgService {

    @Autowired
    public void setBaseMapper(OrgMapper mapper) {
        this.baseMapper = mapper;
    }
}

所有的增删查改代码我都通过泛型写到父类里面了，避免到处都是重复代码
比如：

package com.jjp.service.impl;

import com.jjp.dao.BaseMapper;
import com.jjp.service.BaseService;

import java.util.List;


public abstract class BaseServiceImpl<T, E, K> implements BaseService<T, E, K> {
    
    protected BaseMapper<T,E,K> baseMapper;
    
    @Override
    public int countByExample(E e){
        return baseMapper.countByExample(e);
    }

    @Override
    public void insert(T t) {
        baseMapper.insert(t);
        
    }

    @Override
    public void insertSelective(T t) {
        baseMapper.insertSelective(t);
        
    }

//  @Override
//  public void deleteByPrimaryKey(K k) {
//      baseMapper.deleteByPrimaryKey(k);
//
//  }

    @Override
    public void deleteByExample(E e) {      
        baseMapper.deleteByExample(e);
    }

    @Override
    public T selectByPrimaryKey(K k) {
        return baseMapper.selectByPrimaryKey(k);
    }

    @Override
    public List<T> selectByExample(E e) {
        return baseMapper.selectByExample(e);
    }

    @Override
    public void updateByExampleSelective(T t, E e){
        baseMapper.updateByExampleSelective(t, e);
    }

    @Override
    public void updateByExample(T t, E e) {
        baseMapper.updateByExample(t, e);

    }

    @Override
    public void updateByPrimaryKeySelective(T t) {
        baseMapper.updateByPrimaryKeySelective(t);

    }

//  @Override
//  public void updateByPrimaryKey(T t) {
//      baseMapper.updateByPrimaryKey(t);
//
//  }

    public void setBaseMapper(BaseMapper<T, E, K> baseMapper) {
        this.baseMapper = baseMapper;
    }
        
}

ORM 层也是一样

package com.jjp.dao;

import java.util.List;

import org.apache.ibatis.annotations.Param;


public interface BaseMapper<T,E,K> {
    
        int countByExample(E e);

        int deleteByExample(E e);

        int deleteByPrimaryKey(K k);

        int insert(T t);

        int insertSelective(T t);

        List<T> selectByExample(E e);

        T selectByPrimaryKey(K k);

        int updateByExampleSelective(@Param("record") T t, @Param("example") E e);

        int updateByExample(@Param("record") T t, @Param("example") E e);

        int updateByPrimaryKeySelective(T t);

        int updateByPrimaryKey(T t);
    
    
}

最后看下工具界面

产品截图.png

gitee 地址： https://gitee.com/petercao/ssm-generator

感兴趣的话可以加微信聊聊：mrxiaocao