java - 如何将数组列表传递给 Controller

Question

我有一种情况，我想将数组列表传递给 Controller ​​，我正在附加我的 Controller 和下面的java代码，请给我一个想法或建议来做到这一点模型类...

public class Rules {
String id;
String details;
String parameter;
String value;

public String getId() {
    return id;
}
public void setId(String id) {
    this.id = id;
}
public String getDetails() {
    return details;
}
public void setDetails(String details) {
    this.details = details;
}
public String getParameter() {
    return parameter;
}
public void setParameter(String parameter) {
    this.parameter = parameter;
}
public String getValue() {
    return value;
}
public void setValue(String value) {
    this.value = value;
}
public Rules(){}
public Rules(String id,String details,String parameter, String value){
    this.id=id;
    this.details=details;
    this.value=value;
    this.parameter=parameter;

}

这里是创建列表的java类..

import java.util.ArrayList;
import com.demo.Rules;

public class CompArray {
public ArrayList<Rules> addRule(){
    ArrayList<Rules> a1= new ArrayList<Rules>();
        Rules rul = new Rules();
        rul.setId("1001");
        rul.setDetails("khagfkj");
        rul.setParameter("lsrkjglkrs");
        rul.setValue("lskdjfk");

    a1.add(rul);

    return a1;

 }

Controller

@RequestMapping(value = "/compplan", method = RequestMethod.GET)
public String listRules1(ModelMap model) {
    CompArray obj1 = new CompArray();
    model.addAttribute("listRule1", obj1.addRule());
    return "hello";
}

我需要帮助，请帮助我，谢谢....

Answer 1

使用 json 类似的东西:

 model.addAttribute("listRule1", new JSONArray().addAll(obj1.addRule()));   

编辑: 您可以通过传递整个对象来完成此操作，在您的情况下，您将传递 CompArray 对象，并在接收它时调用您的函数，该函数将返回 arraylist

import java.util.ArrayList;
import com.demo.Rules;

public class CompArray {
   public ArrayList<Rules> a1= new ArrayList<Rules>();

public CompArray (){
        Rules rul = new Rules();
        rul.setId("1001");
        rul.setDetails("khagfkj");
        rul.setParameter("lsrkjglkrs");
        rul.setValue("lskdjfk");

    a1.add(rul);


 }
public ArrayList<Rules> getRules(){


    return a1;
}
}

和 Controller

  @RequestMapping(value = "/compplan", method = RequestMethod.GET)
    public String listRules1(ModelMap model) {
        CompArray obj1 = new CompArray();
        model.addAttribute("listRule1", obj1);
        return "hello";
    }