SpringBoot + Spring Cloud +Vue 管理系统后台搭建（七、业务代码通用CURD实现）

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原创最新推荐文章于 2026-05-31 10:50:04 发布 1.1k 阅读 AI 写同款· GEO 优化 ›

vue-springboot实现基本crud 本例项目目录大概为：想实现点击编辑让update修改组件顶替list列表组件，list为header的子组件，但是能力有限，没有实现，有大佬知道可以评论告知一下。由于要在update回显，要传当前emp数据和全部department数据，对于从后台获取数据获取并传过去又没搞定，我这里就把update放在list里面当子组件了，通过父子组件传过去了。列表中数据如下，list怎么来的各位自己搞定 list.vue全部代码 <template> <div&gt. 阅读详情

什么是CURD

CURD是一个数据库技术中的缩写词，一般的项目开发的各种参数的基本功能都是CURD。作用是用于处理数据的基本操作。它代表创建(Create)、更新(Update)、读取(Retrieve)和删除(Delete)操作。

第一步、在mango-common新建utils包

在包下创建ReflectionUtils.java

package com.louis.mango.common.utils;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

/**
 * 反射相关辅助方法
 * @author Louis
 * @date Aug 19, 2018
 */
public class ReflectionUtils {

   
   /**
    * 根据方法名调用指定对象的方法
    * @param object 要调用方法的对象
    * @param method 要调用的方法名
    * @param args 参数对象数组
    * @return
    */
   public static Object invoke(Object object, String method, Object... args) {
      Object result = null;
      Class<? extends Object> clazz = object.getClass();
      Method queryMethod = getMethod(clazz, method, args);
      if(queryMethod != null) {
         try {
            result = queryMethod.invoke(object, args);
         } catch (IllegalAccessException e) {
            e.printStackTrace();
         } catch (IllegalArgumentException e) {
            e.printStackTrace();
         } catch (InvocationTargetException e) {
            e.printStackTrace();
         }
      } else {
         try {
            throw new NoSuchMethodException(clazz.getName() + " 类中没有找到 " + method + " 方法。");
         } catch (NoSuchMethodException e) {
            e.printStackTrace();
         }
      }
      return result;
   }
   
   /**
    * 根据方法名和参数对象查找方法
    * @param clazz
    * @param name
    * @param args 参数实例数据
    * @return
    */
   public static Method getMethod(Class<? extends Object> clazz, String name, Object[] args) {
      Method queryMethod = null;
      Method[] methods = clazz.getMethods();
      for(Method method:methods) {
         if(method.getName().equals(name)) {
            Class<?>[] parameterTypes = method.getParameterTypes();
            if(parameterTypes.length == args.length) {
               boolean isSameMethod = true;
               for(int i=0; i<parameterTypes.length; i++) {
                  Object arg = args[i];
                  if(arg == null) {
                     arg = "";
                  }
                  if(!parameterTypes[i].equals(args[i].getClass())) {
                     isSameMethod = false;
                  }
               }
               if(isSameMethod) {
                  queryMethod = method;
                  break ;
               }
            }
         }
      }
      return queryMethod;
   }
}

第二步、在mango-core新建包

在server包下创建CurdService.java

import com.louis.mango.core.page.PageRequest;
import com.louis.mango.core.page.PageResult;

import java.util.List;

public interface CurdService<T> {
    /**
     * 保存
     * @param record
     * @return
     */
    int Save(T record);

    /**
     * 删除操作
     * @param record
     * @return
     */
    int delete(T record);

    /**
     * 批量删除
     * @param record
     * @return
     */
    int delete(List<T> record);

    /**
     * 根据id查询
     * @param id
     * @return
     */
    T findById(Long id);

    PageResult findPage(PageRequest pageRequest);
}


在page下新增分页代码封装PageResult.java、PageRequest.java、MybatisPageHelper.java

分页助手封装类

在mango-core的pom.xml文件中新增Mybatis分页插件pagehelper相关依赖

<!-- pagehelper -->
<dependency>
    <groupId>com.github.pagehelper</groupId>
    <artifactId>pagehelper-spring-boot-starter</artifactId>
    <version>1.3.0</version>
</dependency>

在mango-admin的yml配置文件中添加配置

pagehelper:
  helperDialect: mysql
  reasonable: true
  supportMethodsArguments: true
  params: count=countSql

在page包下创建MybatisPageHelper.java、PageRequest.java、PageResult.java分页类

MybatisPageHelper.java

package com.louis.mango.core.page;

import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.louis.mango.common.utils.ReflectionUtils;

import java.util.List;


/**
 * MyBatis 分页查询助手
 * @author Louis
 * @date Jan 12, 2019
 */
public class MybatisPageHelper {

    public static final String findPage = "findPage";

    /**
     * 分页查询, 约定查询方法名为 “findPage”
     * @param pageRequest 分页请求
     * @param mapper Dao对象，MyBatis的 Mapper
     * @param
     * @return
     */
    public static PageResult findPage(PageRequest pageRequest, Object mapper) {
        return findPage(pageRequest, mapper, findPage);
    }

    /**
     * 调用分页插件进行分页查询
     * @param pageRequest 分页请求
     * @param mapper Dao对象，MyBatis的 Mapper
     * @param queryMethodName 要分页的查询方法名
     * @param args 方法参数
     * @return
     */
    @SuppressWarnings({ "unchecked", "rawtypes" })
    public static PageResult findPage(PageRequest pageRequest, Object mapper, String queryMethodName, Object... args) {
        // 设置分页参数
        int pageNum = pageRequest.getPageNum();
        int pageSize = pageRequest.getPageSize();
        PageHelper.startPage(pageNum, pageSize);
        // 利用反射调用查询方法
        Object result = ReflectionUtils.invoke(mapper, queryMethodName, args);
        return getPageResult(pageRequest, new PageInfo((List) result));
    }

    /**
     * 将分页信息封装到统一的接口
     * @param pageRequest
     * @param
     * @return
     */
    private static PageResult getPageResult(PageRequest pageRequest, PageInfo<?> pageInfo) {
        PageResult pageResult = new PageResult();
        pageResult.setPageNum(pageInfo.getPageNum());
        pageResult.setPageSize(pageInfo.getPageSize());
        pageResult.setTotalSize(pageInfo.getTotal());
        pageResult.setTotalPages(pageInfo.getPages());
        pageResult.setContent(pageInfo.getList());
        return pageResult;
    }

}

PageRequest.java

package com.louis.mango.core.page;

import java.util.HashMap;
import java.util.Map;

/**
 * 分页请求分装类
 */

public class PageRequest {
    /**
     * 当前页码
     */
    private int pageNum = 1;
    /**
     *每页数量
     */
    private int pageSize = 10;
    /**
     * 查询参数
     */
    private Map<String,Object> params = new HashMap<String,Object>();
    public int getPageNum() {
        return pageNum;
    }

    public void setPageNum(int pageNum) {
        this.pageNum = pageNum;
    }

    public int getPageSize() {
        return pageSize;
    }

    public void setPageSize(int pageSize) {
        this.pageSize = pageSize;
    }

    public Map<String, Object> getParams() {
        return params;
    }

    public void setParams(Map<String, Object> params) {
        this.params = params;
    }
}

PageResult.java

package com.louis.mango.core.page;

import java.util.List;

/**
 * 分页结果封装类
 */
public class PageResult {
    /**
     * 当前页码
     */
    private int pageNum;
    /**
     * 每页数量
     */
    private int pageSize;
    /**
     * 记录总数
     */
    private long totalSize;
    /**
     * 页码总数
     */
    private int totalPages;
    /**
     * 分页数据
     */
    private List<?> content;
    public int getPageNum() {
        return pageNum;
    }
    public void setPageNum(int pageNum) {
        this.pageNum = pageNum;
    }
    public int getPageSize() {
        return pageSize;
    }
    public void setPageSize(int pageSize) {
        this.pageSize = pageSize;
    }
    public long getTotalSize() {
        return totalSize;
    }
    public void setTotalSize(long totalSize) {
        this.totalSize = totalSize;
    }
    public int getTotalPages() {
        return totalPages;
    }
    public void setTotalPages(int totalPages) {
        this.totalPages = totalPages;
    }
    public List<?> getContent() {
        return content;
    }
    public void setContent(List<?> content) {
        this.content = content;
    }
}

在http包下新建 HttpResult.java、HttpStatus、java

对调用的结果进行统一封装返回给前端 HttpResult.java

package com.louis.mango.core.http;

/**
 * HTTP结果封装
 * @author Louis
 * @date Jan 12, 2019
 */
public class HttpResult {

    private int code = 200;
    private String msg;
    private Object data;

    public static HttpResult error() {
        return error(HttpStatus.SC_INTERNAL_SERVER_ERROR, "未知异常，请联系管理员");
    }

    public static HttpResult error(String msg) {
        return error(HttpStatus.SC_INTERNAL_SERVER_ERROR, msg);
    }

    public static HttpResult error(int code, String msg) {
        HttpResult r = new HttpResult();
        r.setCode(code);
        r.setMsg(msg);
        return r;
    }

    public static HttpResult ok(String msg) {
        HttpResult r = new HttpResult();
        r.setMsg(msg);
        return r;
    }

    public static HttpResult ok(Object data) {
        HttpResult r = new HttpResult();
        r.setData(data);
        return r;
    }

    public static HttpResult ok() {
        return new HttpResult();
    }

    public int getCode() {
        return code;
    }

    public void setCode(int code) {
        this.code = code;
    }

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }

    public Object getData() {
        return data;
    }

    public void setData(Object data) {
        this.data = data;
    }

}

HttpStatus.java

package com.louis.mango.core.http;
/**
 * Constants enumerating the HTTP status codes.
 * All status codes defined in RFC1945 (HTTP/1.0), RFC2616 (HTTP/1.1), and
 * RFC2518 (WebDAV) are listed.
 *
 * @see
 *
 * @since 4.0
 */
public interface HttpStatus {

    // --- 1xx Informational ---

    /** {@code 100 Continue} (HTTP/1.1 - RFC 2616) */
    public static final int SC_CONTINUE = 100;
    /** {@code 101 Switching Protocols} (HTTP/1.1 - RFC 2616)*/
    public static final int SC_SWITCHING_PROTOCOLS = 101;
    /** {@code 102 Processing} (WebDAV - RFC 2518) */
    public static final int SC_PROCESSING = 102;

    // --- 2xx Success ---

    /** {@code 200 OK} (HTTP/1.0 - RFC 1945) */
    public static final int SC_OK = 200;
    /** {@code 201 Created} (HTTP/1.0 - RFC 1945) */
    public static final int SC_CREATED = 201;
    /** {@code 202 Accepted} (HTTP/1.0 - RFC 1945) */
    public static final int SC_ACCEPTED = 202;
    /** {@code 203 Non Authoritative Information} (HTTP/1.1 - RFC 2616) */
    public static final int SC_NON_AUTHORITATIVE_INFORMATION = 203;
    /** {@code 204 No Content} (HTTP/1.0 - RFC 1945) */
    public static final int SC_NO_CONTENT = 204;
    /** {@code 205 Reset Content} (HTTP/1.1 - RFC 2616) */
    public static final int SC_RESET_CONTENT = 205;
    /** {@code 206 Partial Content} (HTTP/1.1 - RFC 2616) */
    public static final int SC_PARTIAL_CONTENT = 206;
    /**
     * {@code 207 Multi-Status} (WebDAV - RFC 2518)
     * or
     * {@code 207 Partial Update OK} (HTTP/1.1 - draft-ietf-http-v11-spec-rev-01?)
     */
    public static final int SC_MULTI_STATUS = 207;

    // --- 3xx Redirection ---

    /** {@code 300 Mutliple Choices} (HTTP/1.1 - RFC 2616) */
    public static final int SC_MULTIPLE_CHOICES = 300;
    /** {@code 301 Moved Permanently} (HTTP/1.0 - RFC 1945) */
    public static final int SC_MOVED_PERMANENTLY = 301;
    /** {@code 302 Moved Temporarily} (Sometimes {@code Found}) (HTTP/1.0 - RFC 1945) */
    public static final int SC_MOVED_TEMPORARILY = 302;
    /** {@code 303 See Other} (HTTP/1.1 - RFC 2616) */
    public static final int SC_SEE_OTHER = 303;
    /** {@code 304 Not Modified} (HTTP/1.0 - RFC 1945) */
    public static final int SC_NOT_MODIFIED = 304;
    /** {@code 305 Use Proxy} (HTTP/1.1 - RFC 2616) */
    public static final int SC_USE_PROXY = 305;
    /** {@code 307 Temporary Redirect} (HTTP/1.1 - RFC 2616) */
    public static final int SC_TEMPORARY_REDIRECT = 307;

    // --- 4xx Client Error ---

    /** {@code 400 Bad Request} (HTTP/1.1 - RFC 2616) */
    public static final int SC_BAD_REQUEST = 400;
    /** {@code 401 Unauthorized} (HTTP/1.0 - RFC 1945) */
    public static final int SC_UNAUTHORIZED = 401;
    /** {@code 402 Payment Required} (HTTP/1.1 - RFC 2616) */
    public static final int SC_PAYMENT_REQUIRED = 402;
    /** {@code 403 Forbidden} (HTTP/1.0 - RFC 1945) */
    public static final int SC_FORBIDDEN = 403;
    /** {@code 404 Not Found} (HTTP/1.0 - RFC 1945) */
    public static final int SC_NOT_FOUND = 404;
    /** {@code 405 Method Not Allowed} (HTTP/1.1 - RFC 2616) */
    public static final int SC_METHOD_NOT_ALLOWED = 405;
    /** {@code 406 Not Acceptable} (HTTP/1.1 - RFC 2616) */
    public static final int SC_NOT_ACCEPTABLE = 406;
    /** {@code 407 Proxy Authentication Required} (HTTP/1.1 - RFC 2616)*/
    public static final int SC_PROXY_AUTHENTICATION_REQUIRED = 407;
    /** {@code 408 Request Timeout} (HTTP/1.1 - RFC 2616) */
    public static final int SC_REQUEST_TIMEOUT = 408;
    /** {@code 409 Conflict} (HTTP/1.1 - RFC 2616) */
    public static final int SC_CONFLICT = 409;
    /** {@code 410 Gone} (HTTP/1.1 - RFC 2616) */
    public static final int SC_GONE = 410;
    /** {@code 411 Length Required} (HTTP/1.1 - RFC 2616) */
    public static final int SC_LENGTH_REQUIRED = 411;
    /** {@code 412 Precondition Failed} (HTTP/1.1 - RFC 2616) */
    public static final int SC_PRECONDITION_FAILED = 412;
    /** {@code 413 Request Entity Too Large} (HTTP/1.1 - RFC 2616) */
    public static final int SC_REQUEST_TOO_LONG = 413;
    /** {@code 414 Request-URI Too Long} (HTTP/1.1 - RFC 2616) */
    public static final int SC_REQUEST_URI_TOO_LONG = 414;
    /** {@code 415 Unsupported Media Type} (HTTP/1.1 - RFC 2616) */
    public static final int SC_UNSUPPORTED_MEDIA_TYPE = 415;
    /** {@code 416 Requested Range Not Satisfiable} (HTTP/1.1 - RFC 2616) */
    public static final int SC_REQUESTED_RANGE_NOT_SATISFIABLE = 416;
    /** {@code 417 Expectation Failed} (HTTP/1.1 - RFC 2616) */
    public static final int SC_EXPECTATION_FAILED = 417;

    /**
     * Static constant for a 418 error.
     * {@code 418 Unprocessable Entity} (WebDAV drafts?)
     * or {@code 418 Reauthentication Required} (HTTP/1.1 drafts?)
     */
    // not used
    // public static final int SC_UNPROCESSABLE_ENTITY = 418;

    /**
     * Static constant for a 419 error.
     * {@code 419 Insufficient Space on Resource}
     * (WebDAV - draft-ietf-webdav-protocol-05?)
     * or {@code 419 Proxy Reauthentication Required}
     * (HTTP/1.1 drafts?)
     */
    public static final int SC_INSUFFICIENT_SPACE_ON_RESOURCE = 419;
    /**
     * Static constant for a 420 error.
     * {@code 420 Method Failure}
     * (WebDAV - draft-ietf-webdav-protocol-05?)
     */
    public static final int SC_METHOD_FAILURE = 420;
    /** {@code 422 Unprocessable Entity} (WebDAV - RFC 2518) */
    public static final int SC_UNPROCESSABLE_ENTITY = 422;
    /** {@code 423 Locked} (WebDAV - RFC 2518) */
    public static final int SC_LOCKED = 423;
    /** {@code 424 Failed Dependency} (WebDAV - RFC 2518) */
    public static final int SC_FAILED_DEPENDENCY = 424;

    // --- 5xx Server Error ---

    /** {@code 500 Server Error} (HTTP/1.0 - RFC 1945) */
    public static final int SC_INTERNAL_SERVER_ERROR = 500;
    /** {@code 501 Not Implemented} (HTTP/1.0 - RFC 1945) */
    public static final int SC_NOT_IMPLEMENTED = 501;
    /** {@code 502 Bad Gateway} (HTTP/1.0 - RFC 1945) */
    public static final int SC_BAD_GATEWAY = 502;
    /** {@code 503 Service Unavailable} (HTTP/1.0 - RFC 1945) */
    public static final int SC_SERVICE_UNAVAILABLE = 503;
    /** {@code 504 Gateway Timeout} (HTTP/1.1 - RFC 2616) */
    public static final int SC_GATEWAY_TIMEOUT = 504;
    /** {@code 505 HTTP Version Not Supported} (HTTP/1.1 - RFC 2616) */
    public static final int SC_HTTP_VERSION_NOT_SUPPORTED = 505;

    /** {@code 507 Insufficient Storage} (WebDAV - RFC 2518) */
    public static final int SC_INSUFFICIENT_STORAGE = 507;

}

第三步、配置sql

在SysUserMapper.xml中添加分页查询方法

<select id="findPage" resultMap="BaseResultMap">
  select <include refid="Base_Column_List"/>
  from sys_user
</select>

第四步、配置Sercice层

让SysUserService继承CurdService，并增加查询方法

public interface SysUserService extends CurdService<SysUser> {

    /**
     * 查找所有用户
     * @return
     */
    List<SysUser> findAll();

}

在serviceImpl中是实现相关方法，我们这里以分页查询为例

@Service
public class SysUserServiceImpl implements SysUserService {
    
    @Autowired
    private SysUserMapper sysUserMapper;

    @Override
    public List<SysUser> findAll() {
        return sysUserMapper.findAll();
    }
   @Override public PageResult findPage(PageRequest pageRequest) { 
       return MybatisPageHelper.findPage(pageRequest,sysUserMapper);
    }
    @Override
    public int Save(SysUser record) {
        return 0;
    }

    @Override
    public int delete(SysUser record) {
        return 0;
    }

    @Override
    public int delete(List<SysUser> record) {
        return 0;
    }

    @Override
    public SysUser findById(Long id) {
        return null;
    }


}

第五步、配置Dao层

@Repository
public interface SysUserMapper {
    /**
     * 查询全部
     * @return
     */
    List<SysUser> findAll();
    /**
     * 分页查询
     */
    List<SysUser> findPage();
    int deleteByPrimaryKey(Long id);

    int insert(SysUser record);

    int insertSelective(SysUser record);

    SysUser selectByPrimaryKey(Long id);

    int updateByPrimaryKeySelective(SysUser record);

    int updateByPrimaryKey(SysUser record);

}

第六步、配置controller

@RestController
@RequestMapping("user")
public class SysUserController {

    @Autowired
    private SysUserService sysUserService;
    
    @GetMapping(value="/findAll")
    public Object findAll() {
        return sysUserService.findAll();
    }

    @PostMapping(value = "/findPage")
    public HttpResult findPage(@RequestBody PageRequest pageRequest){
        return HttpResult.ok(sysUserService.findPage(pageRequest));
    }
}

到此我们已经完成了CURD的通用接口，然后启动项目，访问swagger 进行测试

http://localhost:8001/swagger-ui.html#/