员工分页查询业务代码开发

sky-server/src/main/java/com/sky/config/WebMvcConfiguration.java

@@ -1,10 +1,13 @@
 package com.sky.config;
 
 import com.sky.interceptor.JwtTokenAdminInterceptor;
+import com.sky.json.JacksonObjectMapper;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.http.converter.HttpMessageConverter;
+import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
 import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
 import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
@@ -15,6 +18,8 @@ import springfox.documentation.service.ApiInfo;
 import springfox.documentation.spi.DocumentationType;
 import springfox.documentation.spring.web.plugins.Docket;
 
+import java.util.List;
+
 /**
  * 配置类，注册web层相关组件
  */
@@ -65,4 +70,21 @@ public class WebMvcConfiguration extends WebMvcConfigurationSupport {
         registry.addResourceHandler("/doc.html").addResourceLocations("classpath:/META-INF/resources/");
         registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");
     }
+
+
+    /**
+     * 扩展springMVC框架的消息转换器
+     * 对后端传给前端的数据做统一的处理
+     * @param converters
+     */
+    @Override
+    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
+        log.info("扩展消息转换器...");
+        //创建一个消息转换器对象
+        MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
+        //需要为消息转换器设置一个对象转换器 对象转换器能够将Java对象序列化为json数据
+        converter.setObjectMapper(new JacksonObjectMapper());
+        //将自己的消息转换器加入容器中
+        converters.add(0,converter);
+    }
 }

sky-server/src/main/java/com/sky/controller/admin/EmployeeController.java

@@ -3,8 +3,10 @@ package com.sky.controller.admin;
 import com.sky.constant.JwtClaimsConstant;
 import com.sky.dto.EmployeeDTO;
 import com.sky.dto.EmployeeLoginDTO;
+import com.sky.dto.EmployeePageQueryDTO;
 import com.sky.entity.Employee;
 import com.sky.properties.JwtProperties;
+import com.sky.result.PageResult;
 import com.sky.result.Result;
 import com.sky.service.EmployeeService;
 import com.sky.utils.JwtUtil;
@@ -12,10 +14,7 @@ import com.sky.vo.EmployeeLoginVO;
 import io.swagger.annotations.ApiOperation;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestBody;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.bind.annotation.*;
 
 import java.util.HashMap;
 import java.util.Map;
@@ -90,4 +89,19 @@ public class EmployeeController {
 
     }
 
+
+    /**
+     * 员工分页查询
+     * @param employeePageQueryDTO
+     * @return
+     */
+    @GetMapping("/page")
+    @ApiOperation("员工分页查询")
+    public Result<PageResult> page(EmployeePageQueryDTO employeePageQueryDTO){
+
+        log.info("员工分页查询，参数为：{}", employeePageQueryDTO);
+        PageResult pageResult = employeeService.pageQuery(employeePageQueryDTO);
+        return Result.success(pageResult);
+    }
+
 }

sky-server/src/main/java/com/sky/mapper/EmployeeMapper.java

@@ -1,5 +1,7 @@
 package com.sky.mapper;
 
+import com.github.pagehelper.Page;
+import com.sky.dto.EmployeePageQueryDTO;
 import com.sky.entity.Employee;
 import org.apache.ibatis.annotations.Insert;
 import org.apache.ibatis.annotations.Mapper;
@@ -25,4 +27,13 @@ public interface EmployeeMapper {
     "values" +
     "(#{name}, #{username}, #{password}, #{phone}, #{sex}, #{idNumber}, #{createTime}, #{updateTime}, #{createUser}, #{updateUser})")
     void insert(Employee employee);
+
+
+    /**
+     * 分页查询
+     * @param employeePageQueryDTO
+     * @return
+     */
+
+    Page<Employee> pageQuery(EmployeePageQueryDTO employeePageQueryDTO);
 }

sky-server/src/main/java/com/sky/service/EmployeeService.java

@@ -2,7 +2,9 @@ package com.sky.service;
 
 import com.sky.dto.EmployeeDTO;
 import com.sky.dto.EmployeeLoginDTO;
+import com.sky.dto.EmployeePageQueryDTO;
 import com.sky.entity.Employee;
+import com.sky.result.PageResult;
 
 public interface EmployeeService {
 
@@ -19,4 +21,12 @@ public interface EmployeeService {
      * @param employeeDTO
      */
     void save(EmployeeDTO employeeDTO);
+
+
+    /**
+     * 员工的分页查询
+     * @param employeePageQueryDTO
+     * @return
+     */
+    PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO);
 }

sky-server/src/main/java/com/sky/service/impl/EmployeeServiceImpl.java

@@ -1,16 +1,20 @@
 package com.sky.service.impl;
 
+import com.github.pagehelper.Page;
+import com.github.pagehelper.PageHelper;
 import com.sky.constant.MessageConstant;
 import com.sky.constant.PasswordConstant;
 import com.sky.constant.StatusConstant;
 import com.sky.context.BaseContext;
 import com.sky.dto.EmployeeDTO;
 import com.sky.dto.EmployeeLoginDTO;
+import com.sky.dto.EmployeePageQueryDTO;
 import com.sky.entity.Employee;
 import com.sky.exception.AccountLockedException;
 import com.sky.exception.AccountNotFoundException;
 import com.sky.exception.PasswordErrorException;
 import com.sky.mapper.EmployeeMapper;
+import com.sky.result.PageResult;
 import com.sky.service.EmployeeService;
 import io.lettuce.core.protocol.BaseRedisCommandBuilder;
 import org.springframework.beans.BeanUtils;
@@ -19,6 +23,7 @@ import org.springframework.stereotype.Service;
 import org.springframework.util.DigestUtils;
 
 import java.time.LocalDateTime;
+import java.util.List;
 
 @Service
 public class EmployeeServiceImpl implements EmployeeService {
@@ -87,4 +92,21 @@ public class EmployeeServiceImpl implements EmployeeService {
         employeeMapper.insert(employee);
     }
 
+
+    /**
+     * 员工的分页查询
+     * @param employeePageQueryDTO
+     * @return
+     */
+    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
+        //select * from employee limt 0, 10
+        PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());
+
+        Page<Employee> page = employeeMapper.pageQuery(employeePageQueryDTO);
+
+        long total = page.getTotal();
+        List<Employee> records = page.getResult();
+        return new  PageResult(total, records);
+    }
+
 }

sky-server/src/main/resources/mapper/EmployeeMapper.xml

@@ -1,5 +1,17 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
+
+
+
 <mapper namespace="com.sky.mapper.EmployeeMapper">
+    <select id="pageQuery" resultType="com.sky.entity.Employee">
+        select * from employee
+        <where>
+            <if test="name != null and name != '' ">
+                and name like concat('%',  #{name}, '%')
+            </if>
+        </where>
+        order by create_time desc
+    </select>
 </mapper>