Question

您好我正在尝试将models.InputTimeSheetDataStore类型的对象列表从视图传递到application.java，我收到No QueryString binder found for type java.util.List[models.InputTimeSheetDataStore]. Try to implement an implicit QueryStringBindable for this type错误

在application.java中的

我传递了要查看的对象列表

InputTimeSheetDataStore ITSDS= new InputTimeSheetDataStore();
            ITSDS.ConsultantName=EmployeeFilter;
            ITSDS.Client=ClientFilter;
            ITSDS.Project=ProjectFilter;
            ITSDS.Role=EmployeeRoleFilter;
            ITSDS.Task=Task;
            ITSDS.TimeSheetDate=TimeSheetDate;
            ITSDS.Hours=TaskHours;
            ITSDS.IsBilled=IsBilled;
            ITSDS.Workplace=WorkPlace;
            InputTimeSheetList.add(ITSDS);
            return ok(TimeSheetInput.render(Consultant.PopulateConsultant(),Client.PopulateClient(),Project.PopulateProject(ClientFilter),
                    Consultant.PopulateConsultantRole(),Consultant.ConsultantRoleRate(EmployeeRoleFilter),InputTimeSheetList));

在视图中我将该对象传递回application.java

@(EmployeeList:java.util.List[String],ClientList:java.util.List[String],
  ProjectList:java.util.List[String],EmployeeRoleList: java.util.List[String],Rate:String,
  CurrentPage:List[InputTimeSheetDataStore])

  <form id="TimeSheetEntryForm" name="TimeSheetEntryForm" action="@{routes.Application.save("name","name","name","name","name","name","name","name","name",CurrentPage)}" method="GET">
<code.....>

这是我的班级文件

InputTimeSheetDataStore.java

package models;


public class InputTimeSheetDataStore {

    public String ConsultantName;
    public String Client;
    public String Project;
    public String Role;
    public String Task;
    public String TimeSheetDate;
    public String Hours;
    public String IsBilled;
    public String Workplace;

    public String  getConsultantName(){
        return this.ConsultantName;
    }
    public String  getClient(){
        return this.Client;
    }
    public String  getProject(){
        return this.Project;
    }
    public String  getRole(){
        return this.Role;
    }
    public String  getTask(){
        return this.Task;
    }
    public String  getTimeSheetDate(){
        return this.TimeSheetDate;
    }
    public String  getHours(){
        return this.Hours;
    }
    public String  getIsBilled(){
        return this.IsBilled;
    }
    public String  getWorkPlace(){
        return this.Workplace;
    }

}

我的路线是

GET     /Application/save            controllers.Application.save(EmployeeFilter:String,ClientFilter:String,ProjectFilter:String, EmployeeRoleFilter:String,Task:String,TaskHours:String,TimeSheetDate:String,IsBilled:String,WorkPlace:String,CurrentPage:java.util.List[models.InputTimeSheetDataStore])

有人可以帮我使用InputTimeSheetDataStore类型的隐式查询绑定器

提前致谢

Answer 1

嗨，这是QueryStringbindable的示例实现：

    public class InputTimeSheetDataStore implements QueryStringBindable<InputTimeSheetDataStore> {

      public String consultantName, client, project;

      @Override
      public Optional bind(String key, Map data) {
        if (data.containsKey("consultantName")) {
            this. consultantName = data.get("consultantName").toString();
        }

        if (data.containsKey("client")) {
            this.client = data.get("client").toString();
        }

        if (data.containsKey("project")) {
            this.project = data.get("project").toString();
        }

        return Optional.of(this);
      }

      @Override
      public String unbind(String key) {
        return null;
      }

      @Override
      public String javascriptUnbind() {
        return null;
      }
   }

为您提供的其他提示，在编写编程语言时，请确保遵循代码约定。例如：Java语法中的约定，您必须为第一个字符写小写的变量；

public String ConsultantName; // this is wrong
public String consultantName; //this is right

希望有帮助。

隐式QueryStringBindable java.util.List [models.InputTimeSheetDataStore]

1 个答案: