https://www.cnblogs.com/Donnnnnn/p/6277872.html

方式一：

  1. 第一步：EmpAccNumService
  1. package com.payease.scfordermis.service;
  2.  
  3. import com.payease.scfordermis.bo.ResultBo;
  4. import com.payease.scfordermis.bo.requestBo.ReqEmpAccNumBean;
  5.  
  6. /**
  7.  * @Created By liuxiaoming
  8.  * @CreateTime 2018/1/15 下午1:55
  9.  **/
  10. public interface EmpAccNumService {
  11.  
  12.     ResultBo getEmpAccNumList(ReqEmpAccNumBean reqEmpAccNumBean);
  13.  
  14. }

第二步：EmpAccNumServiceImpl

  1. package com.payease.scfordermis.service.impl;
  2.  
  3. import com.payease.scfordermis.bo.ResultBo;
  4. import com.payease.scfordermis.bo.requestBo.ReqEmpAccNumBean;
  5. import com.payease.scfordermis.bo.responseBo.PageResponseCommBean;
  6. import com.payease.scfordermis.bo.responseBo.RespEmpAccNumBean;
  7. import com.payease.scfordermis.dao.DepartmentInfoDao;
  8. import com.payease.scfordermis.dao.EmployeeInfoDao;
  9. import com.payease.scfordermis.entity.TDepartmentInfoEntity;
  10. import com.payease.scfordermis.entity.TEmployeeInfoEntity;
  11. import com.payease.scfordermis.service.EmpAccNumService;
  12. import com.payease.scfordermis.utils.MapUtil;
  13. import org.apache.commons.lang.StringUtils;
  14. import org.springframework.beans.factory.annotation.Autowired;
  15. import org.springframework.data.domain.Page;
  16. import org.springframework.data.domain.PageRequest;
  17. import org.springframework.data.domain.Pageable;
  18. import org.springframework.data.domain.Sort;
  19. import org.springframework.data.jpa.domain.Specification;
  20. import org.springframework.stereotype.Service;
  21.  
  22. import javax.persistence.criteria.CriteriaBuilder;
  23. import javax.persistence.criteria.CriteriaQuery;
  24. import javax.persistence.criteria.Predicate;
  25. import javax.persistence.criteria.Root;
  26. import java.util.ArrayList;
  27. import java.util.List;
  28. import java.util.Map;
  29.  
  30. /**
  31.  * @Created By liuxiaoming
  32.  * @CreateTime 2018/1/15 下午1:55
  33.  **/
  34. @Service
  35. public class EmpAccNumServiceImpl implements EmpAccNumService {
  36.  
  37.     @Autowired
  38.     EmployeeInfoDao employeeInfoDao;
  39.     @Autowired
  40.     DepartmentInfoDao departmentInfoDao;
  41.  
  42.     /**
  43.      * 员工列表查询
  44.      * @param
  45.      * @return
  46.      */
  47.     @Override
  48.     public ResultBo getEmpAccNumList(ReqEmpAccNumBean req) {
  49.  
  50.        ResultBo result = ResultBo.build();
  51.         //入参
  52.         /**
  53.          *         json.put("depParentId",depParentId);
  54.                     json.put("departmentId", departmentId);
  55.                     json.put("other", other);
  56.                     json.put("page",super.page);
  57.                     json.put("size",super.size);
  58.          */
  59.         Map<String,Object> map1 = req.getMap();
  60.         MapUtil map = new MapUtil(map1);
  61.  
  62.       //todo
  63.         Page<TEmployeeInfoEntity> page = this.pageTEmp(map);
  64.        //todo
  65.         PageResponseCommBean resp =this.pageToResp(page);
  66.         System.out.println("=========resp.getTotalPages():"+resp.getTotalPages());
  67.         System.out.println("=========resp.getTotalElements():"+resp.getTotalElements());
  68.         System.out.println("=========resp.getContent():"+resp.getContent());
  69.         //======================================================
  70.         result.setResultBody(resp);
  71.         return result;
  72.  
  73.     }
  74.  
  75.     /**
  76.      * 从数据库中查询数据
  77.      * @param map
  78.      * @return
  79.      */
  80.     public Page<TEmployeeInfoEntity> pageTEmp(MapUtil map){
  81.         Integer depParentId = map.getInteger("depParentId");
  82.         Integer departmentId = map.getInteger("departmentId");
  83.         String other = map.getString("other");
  84.         //分页                                     当前页               每页显示条数    按照字段排序
  85.         Pageable pageable = new PageRequest(map.getInteger("page") - 1, map.getInteger("size"), new Sort(Sort.Direction.DESC, "fId"));
  86.         Page<TEmployeeInfoEntity> page = employeeInfoDao.findAll(
  87.                 new Specification<TEmployeeInfoEntity>() {
  88.  
  89.                     public Predicate toPredicate(Root<TEmployeeInfoEntity> root,
  90.                                                  CriteriaQuery<?> query, CriteriaBuilder cb) {
  91.                         List<Predicate> lstPredicates = new ArrayList<Predicate>();
  92.                         //部门-1  全查
  93.                         //部门非-1
  94.                         //      看 父ID 0 根节点
  95.                         //                子节点
  96.                         if (departmentId != 0){
  97.                             if(departmentId != -1){
  98.                                 if(depParentId == 0) {
  99.                                     //                                    映射实体类字段                              请求入参字段
  100.                                     lstPredicates.add(cb.equal(root.get("fDepartIdOne").as(Integer.class), departmentId));
  101.                                 }else{
  102.                                     lstPredicates.add(cb.equal(root.get("fDepartIdTwo").as(Integer.class), departmentId));
  103.  
  104.                                 }
  105.                             }
  106.                         }
  107.                         if (StringUtils.isNotBlank(other)) {
  108.                             lstPredicates.add(cb.like(root.get("fSearchKey").as(String.class), "%"+ other +"%"));
  109.                         }
  110.                         lstPredicates.add(cb.notEqual(root.get("fIsDelete").as(String.class),  "yes" ));
  111.                         Predicate[] arrayPredicates = new Predicate[lstPredicates.size()];
  112.                         return cb.and(lstPredicates.toArray(arrayPredicates));
  113.                     }
  114.                 }, pageable);
  115.         return page;
  116.     }
  117.  
  118.     public PageResponseCommBean pageToResp(Page<TEmployeeInfoEntity> page){
  119.         List<TEmployeeInfoEntity> list = page.getContent();
  120.         PageResponseCommBean bean = new PageResponseCommBean();
  121.         List<RespEmpAccNumBean> respList = new ArrayList<>();
  122.         for (TEmployeeInfoEntity entity : list){
  123.  
  124.             RespEmpAccNumBean resp = new RespEmpAccNumBean();
  125.             resp.setfId(entity.getfId());
  126.             if(StringUtils.isNotBlank(String.valueOf(entity.getfAccount()))){
  127.                 resp.setfAccount(entity.getfAccount());
  128.             }
  129.             if(StringUtils.isNotBlank(String.valueOf(entity.getfName()))){
  130.                 resp.setfName(entity.getfName());
  131.             }
  132.             if(StringUtils.isNotBlank(String.valueOf(entity.getfPosition()))){
  133.                 resp.setfPosition(entity.getfPosition());
  134.             }
  135.             if(StringUtils.isNotBlank(String.valueOf(entity.getfDepartIdTwo()))){
  136.                 TDepartmentInfoEntity one = departmentInfoDao.findOne(entity.getfDepartIdTwo());
  137.                 if(one == null){
  138.                     resp.setfDepartIdTwo("");
  139.                 }else{
  140.                     resp.setfDepartIdTwo(one.getfName());
  141.                 }
  142.             }
  143.             if(StringUtils.isNotBlank(entity.getfMobile())){
  144.                 resp.setfMobile(entity.getfMobile());
  145.             }
  146.  
  147.             if(StringUtils.isNotBlank(entity.getfEmail())){
  148.                 resp.setfEmail(entity.getfEmail());
  149.             }
  150.  
  151.             if(StringUtils.isNotBlank(entity.getfStatus())){
  152.                 resp.setfStatus(entity.getfStatus());
  153.             }
  154.             respList.add(resp);
  155.         }
  156.         bean.setContent(respList);
  157.         bean.setNumber(page.getNumber());
  158.         bean.setSize(page.getSize());
  159.         bean.setTotalElements(Integer.valueOf(String.valueOf(page.getTotalElements())));
  160.         bean.setTotalPages(page.getTotalPages());
  161.         return bean;
  162.     }
  163.  
  164. //    public Boolean cheackMap(Map<String,Object> map) {
  165. //        boolean bo = true;
  166. //        Iterator<Map.Entry<String, Object>> it = map.entrySet().iterator();
  167. //        while (it.hasNext()) {
  168. //            Map.Entry<String, Object> entry = it.next();
  169. //            System.out.println("key= " + entry.getKey() + " and value= " + entry.getValue());
  170. //            if(map.get(entry.getKey())==null){
  171. //                return false;
  172. //            }
  173. //        }
  174. //        return true;
  175. //    }
  176. }

第三步：MapUtil

  1. package com.payease.scfordermis.utils;
  2.  
  3. import java.math.BigDecimal;
  4. import java.util.Date;
  5. import java.util.Map;
  6.  
  7. /**
  8.  * @Created By liuxiaoming
  9.  * @CreateTime 2018/1/16 上午9:43
  10.  **/
  11. public class MapUtil {
  12.     private Map<String,Object> map;
  13.  
  14.     public MapUtil(Map<String,Object> map){
  15.         this.map = map;
  16.     }
  17.  
  18.     /**
  19.      * <p>
  20.      * 根据Key返回一个Double型
  21.      * </p>
  22.      * @param key
  23.      * @return Double
  24.      */
  25.     public Double getDouble(String key){
  26.         if(map.get(key)!=null){
  27.             if(map.get(key) instanceof Double){
  28.                 return (Double)map.get(key);
  29.             }else{
  30.                 return 0.0;
  31.             }
  32.         }else{
  33.             return 0.00;
  34.         }
  35.     }
  36.  
  37.     /**
  38.      * <p>
  39.      * 根据Key返回一个String
  40.      * </p>
  41.      * @param key
  42.      * @return String
  43.      */
  44.     public String getString(String key){
  45.         if(map.get(key)!=null){
  46.             if(map.get(key) instanceof String){
  47.                 return (String)map.get(key);
  48.             }else{
  49.                 return "";
  50.             }
  51.         }else{
  52.             return "";
  53.         }
  54.     }
  55.  
  56.     /**
  57.      * <p>
  58.      * 根据Key返回一个Date
  59.      * </p>
  60.      * @param key
  61.      * @return Date
  62.      */
  63.     public Date getDate(String key){
  64.         if(map.get(key)!=null){
  65.             if(map.get(key) instanceof Date){
  66.                 return (Date)map.get(key);
  67.             }else{
  68.                 return null;
  69.             }
  70.         }else{
  71.             return null;
  72.         }
  73.     }
  74.  
  75.     /**
  76.      * <p>
  77.      * 根据Key返回一个Integer
  78.      * </p>
  79.      * @param key
  80.      * @return Integer
  81.      */
  82.     public Integer getInteger(String key){
  83.         if(map.get(key)!=null){
  84.             if(map.get(key) instanceof Integer){
  85.                 return (Integer)map.get(key);
  86.             }else{
  87.                 return 0;
  88.             }
  89.         }else{
  90.             return 0;
  91.         }
  92.     }
  93.  
  94.     /**
  95.      * <p>
  96.      * 根据一个Key返回一个Map<String,String>
  97.      * </p>
  98.      * @param key
  99.      * @return Map<String,String>
  100.      */
  101.     @SuppressWarnings("unchecked")
  102.     public Map<String,String> getMap(String key){
  103.         if(map.get(key)!=null){
  104.             if(map.get(key) instanceof Map){
  105.                 return (Map<String,String>)map.get(key);
  106.             }else{
  107.                 return null;
  108.             }
  109.         }else{
  110.             return null;
  111.         }
  112.     }
  113.  
  114.     /**
  115.      * <p>
  116.      * 根据key返回BigDecimal
  117.      * 如果为null,则返回 new BigDecimal(0)
  118.      * </p>
  119.      * @param key
  120.      * @return BigDecimal
  121.      */
  122.     public BigDecimal getBigDecimal(String key){
  123.         if(map.containsKey(key)){
  124.             if(map.get(key) instanceof BigDecimal){
  125.                 return (BigDecimal)map.get(key);
  126.             }else{
  127.                 return new BigDecimal(0);
  128.             }
  129.         }else{
  130.             return new BigDecimal(0);
  131.         }
  132.     }
  133. }

第四步：RespEmpAccNumBean

  1. package com.payease.scfordermis.bo.responseBo;
  2.  
  3. import io.swagger.annotations.ApiModel;
  4. import io.swagger.annotations.ApiModelProperty;
  5.  
  6. /**
  7.  * @Created By liuxiaoming
  8.  * @CreateTime 2018/1/10 下午2:23
  9.  **/
  10. @ApiModel(value = "员工列表查询实体",description = "描述员工列表查询类")
  11. public class RespEmpAccNumBean {
  12.     @ApiModelProperty(value = "序号",dataType = "long",required = true)
  13.     private long fId;
  14.     @ApiModelProperty(value = "部门",dataType = "string",required = true)
  15.     private String fDepartIdTwo;
  16.     @ApiModelProperty(value = "账号",dataType = "string",required = true)
  17.     private String fAccount;
  18.     @ApiModelProperty(value = "账号状态:  open-开通 close-禁用 ",dataType = "string",required = true)
  19.     private String fStatus;
  20.     @ApiModelProperty(value = "姓名",dataType = "string",required = true)
  21.     private String fName;
  22.     @ApiModelProperty(value = "手机",dataType = "string",required = true)
  23.     private String fMobile;
  24.     @ApiModelProperty(value = "邮箱",dataType = "string",required = true)
  25.     private String fEmail;
  26.     @ApiModelProperty(value = "职位",dataType = "string",required = true)
  27.     private String fPosition;
  28.  
  29.     public long getfId() {
  30.         return fId;
  31.     }
  32.  
  33.     public void setfId(long fId) {
  34.         this.fId = fId;
  35.     }
  36.  
  37.     public String getfDepartIdTwo() {
  38.         return fDepartIdTwo;
  39.     }
  40.  
  41.     public void setfDepartIdTwo(String fDepartIdTwo) {
  42.         this.fDepartIdTwo = fDepartIdTwo;
  43.     }
  44.  
  45.     public String getfAccount() {
  46.         return fAccount;
  47.     }
  48.  
  49.     public void setfAccount(String fAccount) {
  50.         this.fAccount = fAccount;
  51.     }
  52.  
  53.     public String getfStatus() {
  54.         return fStatus;
  55.     }
  56.  
  57.     public void setfStatus(String fStatus) {
  58.         this.fStatus = fStatus;
  59.     }
  60.  
  61.     public String getfName() {
  62.         return fName;
  63.     }
  64.  
  65.     public void setfName(String fName) {
  66.         this.fName = fName;
  67.     }
  68.  
  69.     public String getfMobile() {
  70.         return fMobile;
  71.     }
  72.  
  73.     public void setfMobile(String fMobile) {
  74.         this.fMobile = fMobile;
  75.     }
  76.  
  77.     public String getfEmail() {
  78.         return fEmail;
  79.     }
  80.  
  81.     public void setfEmail(String fEmail) {
  82.         this.fEmail = fEmail;
  83.     }
  84.  
  85.     public String getfPosition() {
  86.         return fPosition;
  87.     }
  88.  
  89.     public void setfPosition(String fPosition) {
  90.         this.fPosition = fPosition;
  91.     }
  92.  
  93.     @Override
  94.     public String toString() {
  95.         return "RespEmpAccNumBean{" +
  96.                 "fId=" + fId +
  97.                 ", fDepartIdTwo='" + fDepartIdTwo + '\'' +
  98.                 ", fAccount='" + fAccount + '\'' +
  99.                 ", fStatus='" + fStatus + '\'' +
  100.                 ", fName='" + fName + '\'' +
  101.                 ", fMobile='" + fMobile + '\'' +
  102.                 ", fEmail='" + fEmail + '\'' +
  103.                 ", fPosition='" + fPosition + '\'' +
  104.                 '}';
  105.     }
  106. }

第五步：PageResponseCommBean

  1. package com.payease.scfordermis.bo.responseBo;
  2.  
  3. import io.swagger.annotations.ApiModel;
  4. import io.swagger.annotations.ApiModelProperty;
  5.  
  6. /**
  7.  * @Author : zhangwen
  8.  * @Data : 2018/1/10
  9.  * @Description :
  10.  */
  11. @ApiModel(value = "分页公共返回类",description = "描述分页返回类")
  12. public class PageResponseCommBean<T> extends PageBean{
  13.     @ApiModelProperty(value = "结果集",dataType = "list")
  14.     private T content;
  15.  
  16.     public T getContent() {
  17.         return content;
  18.     }
  19.  
  20.     public void setContent(T content) {
  21.         this.content = content;
  22.     }
  23.  
  24.     @Override
  25.     public String toString() {
  26.         return "PageResponseCommBean{" +
  27.                 "content=" + content +
  28.                 '}';
  29.     }
  30. }

第六步：PageBean

  1. package com.payease.scfordermis.bo.responseBo;
  2.  
  3. import io.swagger.annotations.ApiModelProperty;
  4.  
  5. /**
  6.  * @Created By liuxiaoming
  7.  * @CreateTime 2018/1/10 下午2:02
  8.  **/
  9. public class PageBean {
  10.     @ApiModelProperty(value = "当前页",dataType = "int",required = true)
  11.     private Integer number;
  12.     @ApiModelProperty(value =  "每页显示条数",dataType = "int",required = true)
  13.     private Integer size;
  14.     @ApiModelProperty(value =  "总条数",dataType = "int",required = true)
  15.     private Integer totalElements;
  16.     @ApiModelProperty(value =  "总页数",dataType = "int",required = true)
  17.     private Integer totalPages;
  18.  
  19.     public Integer getNumber() {
  20.         return number;
  21.     }
  22.  
  23.     public void setNumber(Integer number) {
  24.         this.number = number;
  25.     }
  26.  
  27.     public Integer getSize() {
  28.         return size;
  29.     }
  30.  
  31.     public void setSize(Integer size) {
  32.         this.size = size;
  33.     }
  34.  
  35.     public Integer getTotalElements() {
  36.         return totalElements;
  37.     }
  38.  
  39.     public void setTotalElements(Integer totalElements) {
  40.         this.totalElements = totalElements;
  41.     }
  42.  
  43.     public Integer getTotalPages() {
  44.         return totalPages;
  45.     }
  46.  
  47.     public void setTotalPages(Integer totalPages) {
  48.         this.totalPages = totalPages;
  49.     }
  50.  
  51.     @Override
  52.     public String toString() {
  53.         return "PageBean{" +
  54.                 "number=" + number +
  55.                 ", size=" + size +
  56.                 ", totalElements=" + totalElements +
  57.                 ", totalPages=" + totalPages +
  58.                 '}';
  59.     }
  60. }

第七步：测试

  1. package com.payease.scfordermis;
  2.  
  3. import com.payease.scfordermis.bo.ResultBo;
  4. import com.payease.scfordermis.bo.requestBo.ReqEmpAccNumBean;
  5. import com.payease.scfordermis.service.EmpAccNumService;
  6. import org.junit.Test;
  7. import org.junit.runner.RunWith;
  8. import org.springframework.beans.factory.annotation.Autowired;
  9. import org.springframework.boot.test.context.SpringBootTest;
  10. import org.springframework.test.context.junit4.SpringRunner;
  11.  
  12. @RunWith(SpringRunner.class)
  13. @SpringBootTest
  14. public class ScfOrderMisApplicationTests {
  15.     @Autowired
  16.     private EmpAccNumService empAccNumService;
  17.  
  18.     @Test
  19.     public void contextLoads() {
  20.         ReqEmpAccNumBean req = new ReqEmpAccNumBean();
  21.         //req.setDepartmentId(-1);
  22.         //req.setDepParentId();
  23.         req.setDepartmentId(2);
  24.         req.setDepParentId(1);
  25.         req.setOther("1");
  26.         ResultBo result = empAccNumService.getEmpAccNumList(req);
  27.         System.out.println(result.toString());
  28.  
  29. //        Map<String,Object> map = req.getMap();
  30. //        Boolean bo = new EmpAccNumServiceImpl().cheackMap(map);
  31. //        System.out.println(bo);
  32.     }
  33.  
  34. }

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