Java 如何使用模型映射器将泛型类型映射到集合对象？

我试图使用表示DAO和模型类的库映射两种泛型类型-

模型类-

public class PageModel<T> {

    @JsonProperty("items")
    private List<T> items;

    @JsonProperty("meta")
    private MetaModel meta;

    public PageModel() {

    }

    public PageModel(int current, int limit) {
         this.items = new ArrayList<>();
         this.meta = new MetaModel(current, limit);
    }

    @JsonProperty("items")
    public List<T> getItems() {
        return items;
    }

    @JsonProperty("items")
    public void setItems(List<T> items) {
        this.items = items;
    }

    @JsonProperty("meta")
    public MetaModel getMeta() {
        return meta;
    }

    @JsonProperty("meta")
    public void setMeta(MetaModel meta) {
        this.meta = meta;
    }

}

public class Page<T> {
    private List<T> items;
    private int count;

    public Page(List<T> items, int count) {
        if(items == null)
            throw new IllegalArgumentException("items can not be null");

        this.items = items;
        this.count = count;
    }

    public List<T> getItems() {
        return items;
    }

    public void setItems(List<T> items) {
        if(items == null)
            throw new IllegalArgumentException("items can not be null");

        this.items = items;
    }

    public int getCount() {
        return count;
    }

    public void setCount(int count) {
        this.count = count;
    }
}

        ModelMapper modelMapper = new ModelMapper();

        modelMapper.getConfiguration()
                .setMatchingStrategy(MatchingStrategies.STRICT);

        modelMapper.addMappings(new PropertyMap<Page<?>, PageModel<?>>() {
            @Override
            protected void configure() {
                map().getMeta().setTotal(source.getCount());
            }
        });

        modelMapper.addMappings(new PropertyMap<Subject, SubjectModel>() {
            @Override
            protected void configure() {
                map().getStatus().setPassCount(source.getPassCount());
                map().getStatus().setFailCount(source.getFailCount());
            }
        });

        List<Subject> subjects = new ArrayList<>();
        subjects.add(new Subject("Subject A", 10, 20));
        subjects.add(new Subject("Subject B", 8, 7));

        Page<Subject> page = new Page<>(subjects, 10);

        Type pageType = new TypeToken<PageModel<SubjectModel>>() {}.getType();
        PageModel<SubjectModel> pageModel = modelMapper.map(page, pageType);

---

---

DAO类-

public class PageModel<T> {

    @JsonProperty("items")
    private List<T> items;

    @JsonProperty("meta")
    private MetaModel meta;

    public PageModel() {

    }

    public PageModel(int current, int limit) {
         this.items = new ArrayList<>();
         this.meta = new MetaModel(current, limit);
    }

    @JsonProperty("items")
    public List<T> getItems() {
        return items;
    }

    @JsonProperty("items")
    public void setItems(List<T> items) {
        this.items = items;
    }

    @JsonProperty("meta")
    public MetaModel getMeta() {
        return meta;
    }

    @JsonProperty("meta")
    public void setMeta(MetaModel meta) {
        this.meta = meta;
    }

}

public class Page<T> {
    private List<T> items;
    private int count;

    public Page(List<T> items, int count) {
        if(items == null)
            throw new IllegalArgumentException("items can not be null");

        this.items = items;
        this.count = count;
    }

    public List<T> getItems() {
        return items;
    }

    public void setItems(List<T> items) {
        if(items == null)
            throw new IllegalArgumentException("items can not be null");

        this.items = items;
    }

    public int getCount() {
        return count;
    }

    public void setCount(int count) {
        this.count = count;
    }
}

        ModelMapper modelMapper = new ModelMapper();

        modelMapper.getConfiguration()
                .setMatchingStrategy(MatchingStrategies.STRICT);

        modelMapper.addMappings(new PropertyMap<Page<?>, PageModel<?>>() {
            @Override
            protected void configure() {
                map().getMeta().setTotal(source.getCount());
            }
        });

        modelMapper.addMappings(new PropertyMap<Subject, SubjectModel>() {
            @Override
            protected void configure() {
                map().getStatus().setPassCount(source.getPassCount());
                map().getStatus().setFailCount(source.getFailCount());
            }
        });

        List<Subject> subjects = new ArrayList<>();
        subjects.add(new Subject("Subject A", 10, 20));
        subjects.add(new Subject("Subject B", 8, 7));

        Page<Subject> page = new Page<>(subjects, 10);

        Type pageType = new TypeToken<PageModel<SubjectModel>>() {}.getType();
        PageModel<SubjectModel> pageModel = modelMapper.map(page, pageType);

---

映射器逻辑-

public class PageModel<T> {

    @JsonProperty("items")
    private List<T> items;

    @JsonProperty("meta")
    private MetaModel meta;

    public PageModel() {

    }

    public PageModel(int current, int limit) {
         this.items = new ArrayList<>();
         this.meta = new MetaModel(current, limit);
    }

    @JsonProperty("items")
    public List<T> getItems() {
        return items;
    }

    @JsonProperty("items")
    public void setItems(List<T> items) {
        this.items = items;
    }

    @JsonProperty("meta")
    public MetaModel getMeta() {
        return meta;
    }

    @JsonProperty("meta")
    public void setMeta(MetaModel meta) {
        this.meta = meta;
    }

}

public class Page<T> {
    private List<T> items;
    private int count;

    public Page(List<T> items, int count) {
        if(items == null)
            throw new IllegalArgumentException("items can not be null");

        this.items = items;
        this.count = count;
    }

    public List<T> getItems() {
        return items;
    }

    public void setItems(List<T> items) {
        if(items == null)
            throw new IllegalArgumentException("items can not be null");

        this.items = items;
    }

    public int getCount() {
        return count;
    }

    public void setCount(int count) {
        this.count = count;
    }
}

        ModelMapper modelMapper = new ModelMapper();

        modelMapper.getConfiguration()
                .setMatchingStrategy(MatchingStrategies.STRICT);

        modelMapper.addMappings(new PropertyMap<Page<?>, PageModel<?>>() {
            @Override
            protected void configure() {
                map().getMeta().setTotal(source.getCount());
            }
        });

        modelMapper.addMappings(new PropertyMap<Subject, SubjectModel>() {
            @Override
            protected void configure() {
                map().getStatus().setPassCount(source.getPassCount());
                map().getStatus().setFailCount(source.getFailCount());
            }
        });

        List<Subject> subjects = new ArrayList<>();
        subjects.add(new Subject("Subject A", 10, 20));
        subjects.add(new Subject("Subject B", 8, 7));

        Page<Subject> page = new Page<>(subjects, 10);

        Type pageType = new TypeToken<PageModel<SubjectModel>>() {}.getType();
        PageModel<SubjectModel> pageModel = modelMapper.map(page, pageType);

ModelMapper ModelMapper=newmodelmapper（）；
modelMapper.getConfiguration（）
.setMatchingStrategy（MatchingStrategies.STRICT）；
modelMapper.addMappings（新属性映射>（）{
@凌驾
受保护的void configure（）{
map（）.getMeta（）.setTotal（source.getCount（））；
}
});
addMappings（新属性映射（）{
@凌驾
受保护的void configure（）{
map（）.getStatus（）.setPassCount（source.getPassCount（））；
map（）.getStatus（）.setFailCount（source.getFailCount（））；
}
});
列表主题=新建ArrayList（）；
添加（新主题（“主题A”，10，20））；
添加（新主题（“主题B”，8，7））；
第页=新页（主题，10）；
类型pageType=newTypeToken（）{}.getType（）；
PageModel PageModel=modelMapper.map（页面，页面类型）；

---

ModelMapper似乎不起作用了，它给了我主题类项目而不是主题模型类项目的

pageModel

，我已经解决了这个问题：并将在本周末发布。 请看一下这是否解决了您的问题。谢谢。

解决了这个问题。感谢您的快速回复。：）