[英]How to search data in Spring JPA Restful Service
我想进行弹簧数据搜索。以下是可用产品名称的列表。
"payload": [
{
"id": 1,
"productName": "SHRIMPS COCKTAIL"
},
{
"id": 2,
"productName": "MELON FRAPE"
},
{
"id": 3,
"productName": "HORS D’OEUVRE VARIE"
},
{
"id": 4,
"productName": "CREAM OF VEGETABLES SOUP"
},
{
"id": 5,
"productName": "RAVIOLI AU JUS"
},
{
"id": 6,
"productName": "OMELETTE ESPAGNOLE"
},
{
"id": 7,
"productName": "CHICKEN A LA KING"
},
{
"id": 8,
"productName": "ROAST BEEF PRINTAINIERE"
},
{
"id": 9,
"productName": "PASRSLEY POTATOES"
},
{
"id": 10,
"productName": "SAUTED POTATOES"
}
]
}
当我使用类似这样的代码的Postman搜索时,结果成功
{
"session":{
"userId":"WebAdmin ACS",
"timestamp":"2019-07-10 13:00:00"
},
"payload":{
"pageNumber":0,
"limit":5,
"productName":"MELON FRAPE"
}
像这样重新响200 OK
{
"status": {
"statusCode": "000",
"statusDesc": "Success"
},
"pageData": {
"totalData": 1,
"totalPaging": 1
},
"payload": [
{
"id": 2,
"productName": "MELON FRAPE"
}
]
但是当我用关键字瓜搜索时,结果不存在
{
"session":{
"userId":"WebAdmin ACS",
"timestamp":"2019-07-10 13:00:00"
},
"payload":{
"pageNumber":0,
"limit":5,
"productName":"MELON"
}
}
回应:
{
"status": {
"statusCode": "001",
"statusDesc": "Data Not Found"
}
我想要的是输入诸如m,me,melon之类的关键字时,同样的结果也不必包含全名。 我的代码是这样的
@RequestMapping(value = "/findproducthk", method = RequestMethod.POST, consumes = MediaType.APPLICATION_JSON_VALUE)
public Response<List<Product>> findProductHouseKeeping(@RequestBody Request<FindProductHouseKeeping> request, HttpServletRequest httpServletRequest) throws JsonProcessingException, NoSuchAlgorithmException {
Response<List<Product>> rvalue = new Response<>();
Status status = new Status();
String user = request.getSession().getUserId();
log.info("Headers : " + HttpUtil.getHeadersInfo(httpServletRequest).toString());
log.info("Incoming request from " + httpServletRequest.getRemoteAddr() + ":" + httpServletRequest.getRemotePort() + "\n"
+ " Method : " + httpServletRequest.getMethod() + "\n"
+ " TLS : " + httpServletRequest.isSecure() + "\n"
+ " Path : " + httpServletRequest.getRequestURI() + "\n"
+ " Body : " + mapper.writeValueAsString(request));
FindProductHouseKeeping findProduct = request.getPayload();
Pageable paging = PageRequest.of(findProduct.getPageNumber(), findProduct.getLimit(), Sort.by("productName").ascending());
Page<Product> data = null;
if (request.getPayload().getProductName() == null) {
data = productRepository.findById(findProduct.getId(), paging);
} else {
data = productRepository.findByProductNameIgnoreCase(findProduct.getProductName().toLowerCase(), paging);
}
if (data.isEmpty()) {
status.setStatusCode("001");
status.setStatusDesc("Data Not Found");
} else {
status.setStatusCode("000");
status.setStatusDesc("Success");
PagingResponse xPage = new PagingResponse();
xPage.setTotalData(data.getTotalElements());
xPage.setTotalPaging(data.getTotalPages());
rvalue.setPayload(data.getContent());
rvalue.setPageData(xPage);
}
log.info("Resp : " + status.toString());
rvalue.setStatus(status);
return rvalue;
}
================================================== =========================================公共类FindProductHouseKeeping {
private int id;
private String productName;
private int pageNumber;
private int limit;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getProductName() {
return productName;
}
public void setProductName(String productName) {
this.productName = productName;
}
public int getPageNumber() {
return pageNumber;
}
public void setPageNumber(int pageNumber) {
this.pageNumber = pageNumber;
}
public int getLimit() {
return limit;
}
public void setLimit(int limit) {
this.limit = limit;
}
这是仓库
public interface ProductRepository extends JpaRepository<Product, Integer> {
Page<Product> findByProductNameIgnoreCase(String productName, Pageable paging);
Page<Product> findById(Integer id, Pageable paging);
如果我理解正确,那么您正在搜索“ MELON” ,这只是数据库“ MELON FRAPE”中数据的一部分。
为了解决此问题,您必须实现Query,其中将包括Like或Containing 。 有几种选择:
Page<Product> findByProductNameContainingIgnoreCase(String productName, Pageable paging);
@Query
批注,其中可以包括本机查询或JPA查询。 更多信息: docs 。
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