common 包，基础组件
YunaiV
5 years ago
parent
fc8eac548a
commit
0a6078610b
@ -0,0 +1,26 @@
|
||||
package cn.iocoder.dashboard.common.pojo;
|
||||
|
||||
import io.swagger.annotations.ApiModel;
|
||||
import io.swagger.annotations.ApiModelProperty;
|
||||
import lombok.Data;
|
||||
import org.hibernate.validator.constraints.Range;
|
||||
|
||||
import javax.validation.constraints.Min;
|
||||
import javax.validation.constraints.NotNull;
|
||||
import java.io.Serializable;
|
||||
|
||||
@ApiModel("分页参数")
|
||||
@Data
|
||||
public class PageParam implements Serializable {
|
||||
|
||||
@ApiModelProperty(value = "页码，从 1 开始", required = true,example = "1")
|
||||
@NotNull(message = "页码不能为空")
|
||||
@Min(value = 1, message = "页码最小值为 1")
|
||||
private Integer pageNo;
|
||||
|
||||
@ApiModelProperty(value = "每页条数，最大值为 100", required = true, example = "10")
|
||||
@NotNull(message = "每页条数不能为空")
|
||||
@Range(min = 1, max = 100, message = "条数范围为 [1, 100]")
|
||||
private Integer pageSize;
|
||||
|
||||
}
|
||||
@ -0,0 +1,20 @@
|
||||
package cn.iocoder.dashboard.common.pojo;
|
||||
|
||||
import io.swagger.annotations.ApiModel;
|
||||
import io.swagger.annotations.ApiModelProperty;
|
||||
import lombok.Data;
|
||||
|
||||
import java.io.Serializable;
|
||||
import java.util.List;
|
||||
|
||||
@ApiModel("分页结果")
|
||||
@Data
|
||||
public final class PageResult<T> implements Serializable {
|
||||
|
||||
@ApiModelProperty(value = "数据", required = true)
|
||||
private List<T> list;
|
||||
|
||||
@ApiModelProperty(value = "总量", required = true)
|
||||
private Long total;
|
||||
|
||||
}
|
||||
@ -0,0 +1,66 @@
|
||||
package cn.iocoder.dashboard.util.collection;
|
||||
|
||||
import cn.hutool.core.collection.CollectionUtil;
|
||||
|
||||
import java.util.*;
|
||||
import java.util.function.Function;
|
||||
import java.util.stream.Collectors;
|
||||
|
||||
/**
|
||||
* Collection 工具类
|
||||
*
|
||||
* @author 芋道源码
|
||||
*/
|
||||
public class CollectionUtils {
|
||||
|
||||
public static <T> Set<T> asSet(T... objs) {
|
||||
return new HashSet<>(Arrays.asList(objs));
|
||||
}
|
||||
|
||||
public static <T, U> List<U> convertList(List<T> from, Function<T, U> func) {
|
||||
return from.stream().map(func).collect(Collectors.toList());
|
||||
}
|
||||
|
||||
public static <T, U> Set<U> convertSet(List<T> from, Function<T, U> func) {
|
||||
return from.stream().map(func).collect(Collectors.toSet());
|
||||
}
|
||||
|
||||
public static <T, K> Map<K, T> convertMap(List<T> from, Function<T, K> keyFunc) {
|
||||
return from.stream().collect(Collectors.toMap(keyFunc, item -> item));
|
||||
}
|
||||
|
||||
public static <T, K, V> Map<K, V> convertMap(List<T> from, Function<T, K> keyFunc, Function<T, V> valueFunc) {
|
||||
return from.stream().collect(Collectors.toMap(keyFunc, valueFunc));
|
||||
}
|
||||
|
||||
public static <T, K> Map<K, List<T>> convertMultiMap(List<T> from, Function<T, K> keyFunc) {
|
||||
return from.stream().collect(Collectors.groupingBy(keyFunc,
|
||||
Collectors.mapping(t -> t, Collectors.toList())));
|
||||
}
|
||||
|
||||
public static <T, K, V> Map<K, List<V>> convertMultiMap(List<T> from, Function<T, K> keyFunc, Function<T, V> valueFunc) {
|
||||
return from.stream().collect(Collectors.groupingBy(keyFunc,
|
||||
Collectors.mapping(valueFunc, Collectors.toList())));
|
||||
}
|
||||
|
||||
// 暂时没想好名字，先以 2 结尾噶
|
||||
public static <T, K, V> Map<K, Set<V>> convertMultiMap2(List<T> from, Function<T, K> keyFunc, Function<T, V> valueFunc) {
|
||||
return from.stream().collect(Collectors.groupingBy(keyFunc, Collectors.mapping(valueFunc, Collectors.toSet())));
|
||||
}
|
||||
|
||||
public static boolean containsAny(Collection<?> source, Collection<?> candidates) {
|
||||
return org.springframework.util.CollectionUtils.containsAny(source, candidates);
|
||||
}
|
||||
|
||||
public static <T> T getFirst(List<T> from) {
|
||||
return !CollectionUtil.isEmpty(from) ? from.get(0) : null;
|
||||
}
|
||||
|
||||
public static <T> void addIfNotNull(Collection<T> coll, T item) {
|
||||
if (item == null) {
|
||||
return;
|
||||
}
|
||||
coll.add(item);
|
||||
}
|
||||
|
||||
}
|
||||
@ -0,0 +1,29 @@
|
||||
package cn.iocoder.dashboard.util.collection;
|
||||
|
||||
import cn.hutool.core.collection.CollectionUtil;
|
||||
import com.google.common.collect.Multimap;
|
||||
|
||||
import java.util.ArrayList;
|
||||
import java.util.Collection;
|
||||
import java.util.List;
|
||||
|
||||
/**
|
||||
* Map 工具类
|
||||
*
|
||||
* @author 芋道源码
|
||||
*/
|
||||
public class MapUtils {
|
||||
|
||||
public static <K, V> List<V> getList(Multimap<K, V> multimap, Collection<K> keys) {
|
||||
List<V> result = new ArrayList<>();
|
||||
keys.forEach(k -> {
|
||||
Collection<V> values = multimap.get(k);
|
||||
if (CollectionUtil.isEmpty(values)) {
|
||||
return;
|
||||
}
|
||||
result.addAll(values);
|
||||
});
|
||||
return result;
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
Reference in New Issue