javascript - 如何处理JSP文件中的@RequestParam？

Question

大家好!我有一个关于在 @RestController 中使用 @RequestParam 的问题。我想知道如何从客户端获取@RequestParam。服务器代码(@RestController):

@ResponseBody
@RequestMapping(method = RequestMethod.GET)
public ResponseEntity<List<ProjectBean>> getAllBeans(@RequestParam(name = "head") Integer headId) {
    Integer head = securityService.getLoggedAccountId();
    List<ProjectBean> projects = (List<ProjectBean>) projectService.getByHead(head);
    return new ResponseEntity<List<ProjectBean>>(projects, HttpStatus.OK);
}

和 JSP/JavaScript:

function loadProjects() {
    $.ajax({
        url : 'rest/projects',
        method : 'GET',
        headers : {
            'Content-Type' : 'application/json',
        },
        success: function(data){
            $.each(data, function(index, project) {
                addProject(project);
            });
        }
    });
}

此函数加载所有项目，但不具有确切的 headId

实体:

@Entity
@Table(name = "projects")

public class Project {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "id")
    private int id;

    @Column(name = "project_name", nullable = false, length = 255)
    private String projectName;

    @Column(name="head")
    private Integer head; //need to get projects with this value

    @Column(name = "description")
    private String description;

    @Column(name = "photo")
    private String photo;

    @Column(name = "status", nullable = false, length = 200)
    private String status;
}

Answer 1

我认为@NayoR 的建议是值得推荐的。但要真正回答您的问题，您需要在 js 中使用查询字符串，例如:

function loadProjects() {
    $.ajax({
        url : 'rest/projects?head=' + headId,
        method : 'GET',
        headers : {
            'Content-Type' : 'application/json',
        },
        success: function(data){
            $.each(data, function(index, project) {
                addProject(project);
            });
        }
    });
}