admin 2021-05-24 10:16:57 +08:00
parent 095e4cf20a
commit 8f1ef267c4
3 changed files with 260 additions and 0 deletions

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@ -3,6 +3,7 @@ package com.github.yulichang.base;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.github.yulichang.interfaces.MPJBaseJoin;
import com.github.yulichang.toolkit.ReflectionKit;
import java.util.List;
import java.util.Map;
@ -11,8 +12,33 @@ import java.util.Map;
* @author yulichang
* @see ServiceImpl
*/
@SuppressWarnings("unchecked")
public class MPJBaseServiceImpl<M extends MPJBaseMapper<T>, T> extends ServiceImpl<M, T> implements MPJBaseService<T> {
/**
* mybatis plus 3.4.3 bug
* <p>
* https://gitee.com/baomidou/mybatis-plus/issues/I3SE8R
* <p>
* https://gitee.com/baomidou/mybatis-plus/commit/7210b461b23211e6b95ca6de2d846aa392bdc28c
*/
@Override
protected Class<T> currentMapperClass() {
return (Class<T>) ReflectionKit.getSuperClassGenericType(this.getClass(), ServiceImpl.class, 0);
}
/**
* mybatis plus 3.4.3 bug
* <p>
* https://gitee.com/baomidou/mybatis-plus/issues/I3SE8R
* <p>
* https://gitee.com/baomidou/mybatis-plus/commit/7210b461b23211e6b95ca6de2d846aa392bdc28c
*/
@Override
protected Class<T> currentModelClass() {
return (Class<T>) ReflectionKit.getSuperClassGenericType(this.getClass(), ServiceImpl.class, 1);
}
@Override
public <DTO> DTO selectJoinOne(Class<DTO> clazz, MPJBaseJoin wrapper) {
return baseMapper.selectJoinOne(clazz, wrapper);

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@ -2,10 +2,20 @@ package com.github.yulichang.injector;
import com.baomidou.mybatisplus.core.injector.AbstractMethod;
import com.baomidou.mybatisplus.core.injector.DefaultSqlInjector;
import com.baomidou.mybatisplus.core.mapper.Mapper;
import com.baomidou.mybatisplus.core.metadata.TableInfo;
import com.baomidou.mybatisplus.core.metadata.TableInfoHelper;
import com.baomidou.mybatisplus.core.toolkit.CollectionUtils;
import com.baomidou.mybatisplus.core.toolkit.GlobalConfigUtils;
import com.github.yulichang.method.*;
import com.github.yulichang.toolkit.ReflectionKit;
import org.apache.ibatis.builder.MapperBuilderAssistant;
import org.apache.ibatis.logging.Log;
import org.apache.ibatis.logging.LogFactory;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import java.util.List;
import java.util.Set;
/**
* SQL 注入器
@ -15,6 +25,7 @@ import java.util.List;
*/
@ConditionalOnMissingBean(DefaultSqlInjector.class)
public class MPJSqlInjector extends DefaultSqlInjector {
private static final Log logger = LogFactory.getLog(MPJSqlInjector.class);
@Override
public List<AbstractMethod> getMethodList(Class<?> mapperClass) {
@ -27,4 +38,31 @@ public class MPJSqlInjector extends DefaultSqlInjector {
list.add(new SelectJoinMapsPage());
return list;
}
/**
* mybatis plus 3.4.3 bug
* <p>
* https://gitee.com/baomidou/mybatis-plus/issues/I3SE8R
* <p>
* https://gitee.com/baomidou/mybatis-plus/commit/7210b461b23211e6b95ca6de2d846aa392bdc28c
*/
@Override
public void inspectInject(MapperBuilderAssistant builderAssistant, Class<?> mapperClass) {
Class<?> modelClass = ReflectionKit.getSuperClassGenericType(mapperClass, Mapper.class, 0);
if (modelClass != null) {
String className = mapperClass.toString();
Set<String> mapperRegistryCache = GlobalConfigUtils.getMapperRegistryCache(builderAssistant.getConfiguration());
if (!mapperRegistryCache.contains(className)) {
List<AbstractMethod> methodList = this.getMethodList(mapperClass);
if (CollectionUtils.isNotEmpty(methodList)) {
TableInfo tableInfo = TableInfoHelper.initTableInfo(builderAssistant, modelClass);
// 循环注入自定义方法
methodList.forEach(m -> m.inject(builderAssistant, mapperClass, modelClass, tableInfo));
} else {
logger.debug(mapperClass.toString() + ", No effective injection method was found.");
}
mapperRegistryCache.add(className);
}
}
}
}

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@ -0,0 +1,196 @@
/*
* Copyright (c) 2011-2021, baomidou (jobob@qq.com).
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.github.yulichang.toolkit;
import com.baomidou.mybatisplus.core.toolkit.*;
import org.apache.ibatis.logging.Log;
import org.apache.ibatis.logging.LogFactory;
import org.springframework.core.GenericTypeResolver;
import java.lang.reflect.AccessibleObject;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.security.AccessController;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import static java.util.function.Function.identity;
import static java.util.stream.Collectors.toMap;
/**
* 反射工具类提供反射相关的快捷操作
*
* @author Caratacus
* @author hcl
* @since 2016-09-22
*/
public final class ReflectionKit {
private static final Log logger = LogFactory.getLog(ReflectionKit.class);
/**
* class field cache
*/
private static final Map<Class<?>, List<Field>> CLASS_FIELD_CACHE = new ConcurrentHashMap<>();
private static final Map<Class<?>, Class<?>> PRIMITIVE_WRAPPER_TYPE_MAP = new IdentityHashMap<>(8);
private static final Map<Class<?>, Class<?>> PRIMITIVE_TYPE_TO_WRAPPER_MAP = new IdentityHashMap<>(8);
static {
PRIMITIVE_WRAPPER_TYPE_MAP.put(Boolean.class, boolean.class);
PRIMITIVE_WRAPPER_TYPE_MAP.put(Byte.class, byte.class);
PRIMITIVE_WRAPPER_TYPE_MAP.put(Character.class, char.class);
PRIMITIVE_WRAPPER_TYPE_MAP.put(Double.class, double.class);
PRIMITIVE_WRAPPER_TYPE_MAP.put(Float.class, float.class);
PRIMITIVE_WRAPPER_TYPE_MAP.put(Integer.class, int.class);
PRIMITIVE_WRAPPER_TYPE_MAP.put(Long.class, long.class);
PRIMITIVE_WRAPPER_TYPE_MAP.put(Short.class, short.class);
for (Map.Entry<Class<?>, Class<?>> entry : PRIMITIVE_WRAPPER_TYPE_MAP.entrySet()) {
PRIMITIVE_TYPE_TO_WRAPPER_MAP.put(entry.getValue(), entry.getKey());
}
}
/**
* 获取字段值
*
* @param entity 实体
* @param fieldName 字段名称
* @return 属性值
*/
public static Object getFieldValue(Object entity, String fieldName) {
Class<?> cls = entity.getClass();
Map<String, Field> fieldMaps = getFieldMap(cls);
try {
Field field = fieldMaps.get(fieldName);
Assert.notNull(field, "Error: NoSuchField in %s for %s. Cause:", cls.getSimpleName(), fieldName);
field.setAccessible(true);
return field.get(entity);
} catch (ReflectiveOperationException e) {
throw ExceptionUtils.mpe("Error: Cannot read field in %s. Cause:", e, cls.getSimpleName());
}
}
/**
* <p>
* 反射对象获取泛型
* </p>
*
* @param clazz 对象
* @param genericIfc 所属泛型父类
* @param index 泛型所在位置
* @return Class
*/
public static Class<?> getSuperClassGenericType(final Class<?> clazz, final Class<?> genericIfc, final int index) {
Class<?>[] typeArguments = GenericTypeResolver.resolveTypeArguments(ClassUtils.getUserClass(clazz), genericIfc);
return null == typeArguments ? null : typeArguments[index];
}
/**
* <p>
* 获取该类的所有属性列表
* </p>
*
* @param clazz 反射类
*/
public static Map<String, Field> getFieldMap(Class<?> clazz) {
List<Field> fieldList = getFieldList(clazz);
return CollectionUtils.isNotEmpty(fieldList) ? fieldList.stream().collect(Collectors.toMap(Field::getName, field -> field)) : Collections.emptyMap();
}
/**
* <p>
* 获取该类的所有属性列表
* </p>
*
* @param clazz 反射类
*/
public static List<Field> getFieldList(Class<?> clazz) {
if (Objects.isNull(clazz)) {
return Collections.emptyList();
}
return CollectionUtils.computeIfAbsent(CLASS_FIELD_CACHE, clazz, k -> {
Field[] fields = k.getDeclaredFields();
List<Field> superFields = new ArrayList<>();
Class<?> currentClass = k.getSuperclass();
while (currentClass != null) {
Field[] declaredFields = currentClass.getDeclaredFields();
Collections.addAll(superFields, declaredFields);
currentClass = currentClass.getSuperclass();
}
/* 排除重载属性 */
Map<String, Field> fieldMap = excludeOverrideSuperField(fields, superFields);
/*
* 重写父类属性过滤后处理忽略部分支持过滤父类属性功能
* 场景中间表不需要记录创建时间忽略父类 createTime 公共属性
* 中间表实体重写父类属性 ` private transient Date createTime; `
*/
return fieldMap.values().stream()
/* 过滤静态属性 */
.filter(f -> !Modifier.isStatic(f.getModifiers()))
/* 过滤 transient关键字修饰的属性 */
.filter(f -> !Modifier.isTransient(f.getModifiers()))
.collect(Collectors.toList());
});
}
/**
* <p>
* 排序重置父类属性
* </p>
*
* @param fields 子类属性
* @param superFieldList 父类属性
*/
public static Map<String, Field> excludeOverrideSuperField(Field[] fields, List<Field> superFieldList) {
// 子类属性
Map<String, Field> fieldMap = Stream.of(fields).collect(toMap(Field::getName, identity(),
(u, v) -> {
throw new IllegalStateException(String.format("Duplicate key %s", u));
},
LinkedHashMap::new));
superFieldList.stream().filter(field -> !fieldMap.containsKey(field.getName()))
.forEach(f -> fieldMap.put(f.getName(), f));
return fieldMap;
}
/**
* 判断是否为基本类型或基本包装类型
*
* @param clazz class
* @return 是否基本类型或基本包装类型
*/
public static boolean isPrimitiveOrWrapper(Class<?> clazz) {
Assert.notNull(clazz, "Class must not be null");
return (clazz.isPrimitive() || PRIMITIVE_WRAPPER_TYPE_MAP.containsKey(clazz));
}
public static Class<?> resolvePrimitiveIfNecessary(Class<?> clazz) {
return (clazz.isPrimitive() && clazz != void.class ? PRIMITIVE_TYPE_TO_WRAPPER_MAP.get(clazz) : clazz);
}
/**
* 设置可访问对象的可访问权限为 true
*
* @param object 可访问的对象
* @param <T> 类型
* @return 返回设置后的对象
*/
public static <T extends AccessibleObject> T setAccessible(T object) {
return AccessController.doPrivileged(new SetAccessibleAction<>(object));
}
}