Question

我正在使用orika在不同的Java bean之间映射值。

的定义

    public class ObjectA {

        private Request request;
    }

Request的定义是-

    public class Request {

        private String id;

        private Map<String, List<String>> params;
    }

ObjectB-

的定义

    public class ObjectB {

        private Long reqId;

        private Double cp;

    }

为简洁起见，我省略了设置方法和获取方法。

下面是从objectA映射到ObjectB的代码-

    Map<String,String> fieldMap = new HashMap<>();
    fieldMap.put("request.id","reqId");
    fieldMap.put("request.params['cp']{}", "cp");


    ObjectA a = new ObjectA();
    Request request = new Request();
    request.setId("123");
    a.setRequest(request);


    Map<String, List<String>> params = new HashMap<String, List<String>>();
    params.put("id", new ArrayList<String>(){{add("2");}});
    params.put("cp", new ArrayList<String>(){{add("0.51"); add("0.52"); add("0.53"); }});


    MappingContext.Factory mcf = new MappingContext.Factory();
    MapperFactory mapperFactory = new DefaultMapperFactory.Builder().mapNulls(false).mappingContextFactory(mcf).dumpStateOnException(false).build();
    ClassMapBuilder<ObjectA, ObjectB> impBuilder = mapperFactory.classMap(ObjectA.class, ObjectB.class);
    fieldMap.forEach((k,v) -> impBuilder.field(k,v));
    impBuilder.register();

    BoundMapperFacade<ObjectA, ObjectB> delegate = mapperFactory.getMapperFacade(ObjectA.class, ObjectB.class);

    ObjectB b = delegate.map(a);

代码在github here中。

运行该程序时，我遇到了错误-

线程“ main”中的异常java.lang.IllegalArgumentException：'request.params ['cp'] {}'不是ObjectA的有效元素属性在ma.glasnost.orika.property.PropertyResolver.getElementProperty（PropertyResolver.java:566）在ma.glasnost.orika.property.PropertyResolver.getProperty（PropertyResolver.java:682）在ma.glasnost.orika.property.PropertyResolver.getProperty（PropertyResolver.java:638）在ma.glasnost.orika.metadata.ClassMapBuilder.resolveProperty（ClassMapBuilder.java:873）在ma.glasnost.orika.metadata.FieldMapBuilder。（FieldMapBuilder.java:78）在ma.glasnost.orika.metadata.FieldMapBuilder。（FieldMapBuilder.java:61）在ma.glasnost.orika.metadata.ClassMapBuilder.fieldMap（ClassMapBuilder.java:328）在ma.glasnost.orika.metadata.ClassMapBuilder.fieldMap（ClassMapBuilder.java:311）在ma.glasnost.orika.metadata.ClassMapBuilder.field（ClassMapBuilder.java:249）在mapper.ObjectAToObjectBDemo.lambda $ main $ 0（ObjectAToObjectBDemo.java:36）在java.util.HashMap.forEach（HashMap.java:1289）在mapper.ObjectAToObjectBDemo.main（ObjectAToObjectBDemo.java:36）

我想将请求对象params的映射ObjectA的映射cp中“ cp”中的键的第一个元素映射到ObjectB的变量fieldMap.put("request.params['cp']{}", "cp");。

我的映射@GetMapping("/form") public ModelAndView createForm(Model model) { model.addAttribute("user", new User()); model.addAttribute("title", "创建用户"); return new ModelAndView("users/form","userModel",model); }有什么问题，我该如何解决？

注意：我正在使用orika版本1.5.4。

将Map <String，List <String >>映射到Double时，orika“ java.lang.IllegalArgumentException：'r.p ['cp'] {}'不是对象的有效元素属性”

0 个答案: