Spring MVC绑定请求参数到POJO字段

Question

I want a controller with the following mapping (incomplete):

@GetMapping(/searchitems)
public @ResponseBody Page<Item> get(Item probe)

From the Item probe parameter I want to query by example in a repository of items and return the result.

Question:

How can I complete the mapping above for a search URL? As search URL I was thinking something like /searchitems?itemAttributeA=foo&itemAttributeB=bar&...itemAttributeZ=xyz . How can I tell spring to inject the passed request parameters into the Item probe fields with the same names?

Answer 1

添加@ModelAttribute应该将各个请求参数绑定到您的Item POJO中。

public @ResponseBody Page<Item> get(@ModelAttribute Item probe)

Answer 2

You can create a POJO and pass as a parameter in the controller class. Pojo should have the fields which you want to read and set. Spring will read and map those attributes in the Pojo which you will define as the request.

 @GetMapping(/searchitems)
 public ResponseEntity<List<Items>> searchItems(ItemRequest       itemRequest) {
 }

Only thing needs to be taken care is to check for binding result. If there are errors, we need to stop the request and handle or throw.

For eg All of the below attributes in the URL will be set in the Pojo.

https://domain/search-items?pageNumber=1&sortOrder=ascending&itemName=test&itemType=apparel&sortField=itemId&pageSize=5

Answer 3

You can use @RequestParam for this.

public @ResponseBody Page<Item> get(@RequestParam("itemAttributeA") String itemAttributeA , 
                                    @RequestParam("itemAttributeB") String itemAttributeB,...)

Answer 4

i have a question. I am moving from JAX RS which has java.ws.rs.QueryParam classes to accept param A into Set/Get . Can you advise is there any equivalent in Spring Boot?

I tried with @named,@AliasFor(value="documentId ") but no luck

@QueryParam("paramA") @FormParam("paramA")

public void setDocumentId(String paramB) {
    this.documentId = paramB;
}