Java实现伪查询(全匹配+模糊匹配)

在项目中一直习惯了框架下[springboot+mybatis]的增删改查，然后领导突然给了一个需求，让我先弄一些假数据出来，用于页面的展示，业务啥的也没说，咱是啥也不知道，咱也不该问，直接动手吧。(可能到了这里大家会说，不了解需求、业务的情况下就动手写，怕不是个新手吧！在编程一途中，小编的确是个新手，但是这次不一样，这次的业务需求是真没有，不废话了，上代码吧！)

由于是Javaweb的项目，所以共有controller层、service层，省去dao层。

实体类POJO：

public class Specification {

/**

* 主键ID

*/

private String id;

/**

* 物料编号

*/

private String materilid;

/**

* 关键字

*/

private String materilname;

/**

* 技术规范ID

*/

private String firmdocumentid;

public String getId() {

return id;

}

public void setId(String id) {

this.id = id;

}

public String getMaterilid() {

return materilid;

}

public void setMaterilid(String materilid) {

this.materilid = materilid;

}

public String getMaterilname() {

return materilname;

}

public void setMaterilname(String materilname) {

this.materilname = materilname;

}

public String getFirmdocumentid() {

return firmdocumentid;

}

public void setFirmdocumentid(String firmdocumentid) {

this.firmdocumentid = firmdocumentid;

}

public Specification(String id, String materilid, String materilname, String firmdocumentid) {

super();

this.id = id;

this.materilid = materilid;

this.materilname = materilname;

this.firmdocumentid = firmdocumentid;

}

public Specification() {

}

}

service层

public interface ISpecificationService {

/**

* @query:根据查询条件 查询

* @param queryCondition 查询条件

* @return QueryResultObject 查询结果

* @date 2019-10-11 15:32:34

* @author Administrator

*/

public QueryResultObject query(RequestCondition queryCondition);

}

service实现层

@Service

public class SpecificationService implements ISpecificationService {

@Override

public QueryResultObject query(RequestCondition queryCondition) {

if(queryCondition == null){

throw new NullArgumentException("queryCondition");

}

ListqList = queryCondition.getQueryFilter();

String materialid = null;

String materialname = null;

for(QueryFilter filter : qList){

if("materialid".endsWith(filter.getFieldName().toLowerCase())){

materialid = (String) filter.getValue();

}

if("materialname".endsWith(filter.getFieldName().toLowerCase())){

materialname = (String) filter.getValue();

}

}

PageRequest request = CommonUtils.buildPageRequest(queryCondition);

int pageindex = request.getPageNumber();//开始页

int pageSize = request.getPageSize();//每页大小

Listresult = production(materialid,materialname);

long count = result.size();

ListsubList = null;

if(count == 0){

subList = result;

}else{

if(pageSize>count){

subList = result.subList(pageindex, (int)count);

}else{

subList = result.subList(pageindex, pageSize);

}

}

return RestUtils.wrappQueryResult(subList, count);

}

/**

* 模拟查询

* @param materialid

* @param materialname

* @return

*/

private Listproduction(String materialid , String materialname){

Listlist = new ArrayList();

list.add(new Specification("x00001","300066510","电网工程、基建、农网","11GH-500083521-000001"));

list.add(new Specification("x00002","300066511","电网工程、设计、农网","11GH-500083521-000002"));

list.add(new Specification("x00003","300066512","电网工程、基建、农网","11GH-500083521-000003"));

list.add(new Specification("x00004","300066513","设计、基建、农网","11GH-500083521-000004"));

list.add(new Specification("x00005","300066514","设计、基建、农网","11GH-500083521-000005"));

list.add(new Specification("x00009","300066515","电网工程、设计、基建、农网","11GH-500083521-000006"));

list.add(new Specification("x00007","300066516","电网工程、设计","11GH-500083521-000007"));

list.add(new Specification("x00008","300066517","电网工程、设计、基建、农网","11GH-500083521-000008"));

list.add(new Specification("x00009","300066514","、基建、农网","11GH-500083521-000009"));

list.add(new Specification("x000010","300066514","电网工程、设计、基建、农网","11GH-500083521-000010"));

list.add(new Specification("x000011","300066514","电网工程、农网","11GH-500083521-000011"));

if(!Strings.isNullOrEmpty(materialid) && Strings.isNullOrEmpty(materialname)){

ListresultList = new ArrayList();

for(Specification specification : list){

if (materialid.equals(specification.getMaterilid())) {

resultList.add(specification);

}

}

return resultList;

}

if(Strings.isNullOrEmpty(materialid) && !Strings.isNullOrEmpty(materialname)){

ListresultList = new ArrayList();

for(Specification specification : list){

if(specification.getMaterilname().contains(materialname)){

resultList.add(specification);

}

}

return resultList;

}

if(!Strings.isNullOrEmpty(materialid) && !Strings.isNullOrEmpty(materialname)){

//id符合的数据

ListresultList = new ArrayList();

//name匹配的数据

ListsList = new ArrayList();

for(Specification specification : list){

if (materialid.equals(specification.getMaterilid())) {

resultList.add(specification);

}

}

if(resultList.size()>0){

for (Specification specification : resultList) {

if(specification.getMaterilname().contains(materialname)){

sList.add(specification);

}

}

return sList;

}else{

return null;

}

}

return list;

}

}

controller层

@RestController

@Transactional

@RequestMapping("/specification")

public class SpecificationController {

/**

* 日志

*/

private final static Logger logger = (Logger) LoggerFactory.getLogger(SpecificationController.class);

@Autowired

private ISpecificationService specificationService;

/**

* @query:查询

* @param requestCondition

* @return WrappedResult 查询结果

* @date 2019-10-11 15:32:34

* @author Administrator

*/

@RequestMapping("/")

public WrappedResult query(@QueryRequestParam("params") RequestCondition requestCondition) {

try {

QueryResultObject queryResult = specificationService.query(requestCondition);

logger.info("查询数据成功");

return WrappedResult.successWrapedResult(queryResult);

} catch (Exception e) {

logger.error(e.getMessage(), e);

String errorMessage = "查询异常";

if(isDev){

errorMessage = e.getMessage();

}

return WrappedResult.failedWrappedResult(errorMessage);

}

}

}

好了，代码到这里就结束了，接下来开始测试：

结束语：

本次分享到这里就结束了，因为是一个小demo，故部分代码也没有进行优化，希望能帮到有需要的小伙伴！