解决SpringDataJPA连接DM时列顺序与类属性顺序不一致问题
在自己项目中创建一个和源码类一样的包结构和一样名字的类,把所有源码中的所有代码复制到你创建的那个类中,然后,就可以对你创建的类 进行修改了,修改好之后启动项目,你就会发现程序走的是你创建的那个类,数据库的所有字段都是和实体类排序一样的了。
注意:目录名和类名要保持一致
package org.hibernate.cfg; import java.util.*; import javax.persistence.Access; import javax.persistence.ManyToMany; import javax.persistence.ManyToOne; import javax.persistence.OneToMany; import javax.persistence.OneToOne; import javax.persistence.Transient; import org.hibernate.AnnotationException; import org.hibernate.annotations.Any; import org.hibernate.annotations.ManyToAny; import org.hibernate.annotations.Target; import org.hibernate.annotations.Type; import org.hibernate.annotations.common.reflection.XClass; import org.hibernate.annotations.common.reflection.XProperty; import org.hibernate.boot.MappingException; import org.hibernate.boot.jaxb.Origin; import org.hibernate.boot.jaxb.SourceType; import org.hibernate.cfg.annotations.HCANNHelper; import org.hibernate.internal.CoreMessageLogger; import org.hibernate.internal.util.StringHelper; import org.jboss.logging.Logger; class PropertyContainer { private static final CoreMessageLogger LOG = Logger.getMessageLogger(CoreMessageLogger.class, PropertyContainer.class.getName()); private final XClass xClass; private final XClass entityAtStake; private final AccessType classLevelAccessType; private final LinkedHashMap<String, XProperty> persistentAttributeMap; PropertyContainer(XClass clazz, XClass entityAtStake, AccessType defaultClassLevelAccessType) { this.xClass = clazz; this.entityAtStake = entityAtStake; if (defaultClassLevelAccessType == AccessType.DEFAULT) { defaultClassLevelAccessType = AccessType.PROPERTY; } AccessType localClassLevelAccessType = this.determineLocalClassDefinedAccessStrategy(); assert localClassLevelAccessType != null; this.classLevelAccessType = localClassLevelAccessType != AccessType.DEFAULT ? localClassLevelAccessType : defaultClassLevelAccessType; assert this.classLevelAccessType == AccessType.FIELD || this.classLevelAccessType == AccessType.PROPERTY; this.persistentAttributeMap = new LinkedHashMap<>(); List<XProperty> fields = this.xClass.getDeclaredProperties(AccessType.FIELD.getType()); List<XProperty> getters = this.xClass.getDeclaredProperties(AccessType.PROPERTY.getType()); this.preFilter(fields, getters); Map<String, XProperty> persistentAttributesFromGetters = new HashMap(); this.collectPersistentAttributesUsingLocalAccessType(this.persistentAttributeMap, persistentAttributesFromGetters, fields, getters); this.collectPersistentAttributesUsingClassLevelAccessType(this.persistentAttributeMap, persistentAttributesFromGetters, fields, getters); } private void preFilter(List<XProperty> fields, List<XProperty> getters) { Iterator propertyIterator = fields.iterator(); XProperty property; while(propertyIterator.hasNext()) { property = (XProperty)propertyIterator.next(); if (mustBeSkipped(property)) { propertyIterator.remove(); } } propertyIterator = getters.iterator(); while(propertyIterator.hasNext()) { property = (XProperty)propertyIterator.next(); if (mustBeSkipped(property)) { propertyIterator.remove(); } } } private void collectPersistentAttributesUsingLocalAccessType(LinkedHashMap<String, XProperty> persistentAttributeMap, Map<String, XProperty> persistentAttributesFromGetters, List<XProperty> fields, List<XProperty> getters) { Iterator propertyIterator = fields.iterator(); XProperty xProperty; Access localAccessAnnotation; while(propertyIterator.hasNext()) { xProperty = (XProperty)propertyIterator.next(); localAccessAnnotation = xProperty.getAnnotation(Access.class); if (localAccessAnnotation != null && localAccessAnnotation.value() == javax.persistence.AccessType.FIELD) { propertyIterator.remove(); persistentAttributeMap.put(xProperty.getName(), xProperty); } } propertyIterator = getters.iterator(); while(propertyIterator.hasNext()) { xProperty = (XProperty)propertyIterator.next(); localAccessAnnotation = xProperty.getAnnotation(Access.class); if (localAccessAnnotation != null && localAccessAnnotation.value() == javax.persistence.AccessType.PROPERTY) { propertyIterator.remove(); String name = xProperty.getName(); XProperty previous = persistentAttributesFromGetters.get(name); if (previous != null) { throw new MappingException(LOG.ambiguousPropertyMethods(this.xClass.getName(), HCANNHelper.annotatedElementSignature(previous), HCANNHelper.annotatedElementSignature(xProperty)), new Origin(SourceType.ANNOTATION, this.xClass.getName())); } persistentAttributeMap.put(name, xProperty); persistentAttributesFromGetters.put(name, xProperty); } } } private void collectPersistentAttributesUsingClassLevelAccessType(LinkedHashMap<String, XProperty> persistentAttributeMap, Map<String, XProperty> persistentAttributesFromGetters, List<XProperty> fields, List<XProperty> getters) { Iterator var5; XProperty getter; if (this.classLevelAccessType == AccessType.FIELD) { var5 = fields.iterator(); while(var5.hasNext()) { getter = (XProperty)var5.next(); if (!persistentAttributeMap.containsKey(getter.getName())) { persistentAttributeMap.put(getter.getName(), getter); } } } else { var5 = getters.iterator(); while(var5.hasNext()) { getter = (XProperty)var5.next(); String name = getter.getName(); XProperty previous = persistentAttributesFromGetters.get(name); if (previous != null) { throw new MappingException(LOG.ambiguousPropertyMethods(this.xClass.getName(), HCANNHelper.annotatedElementSignature(previous), HCANNHelper.annotatedElementSignature(getter)), new Origin(SourceType.ANNOTATION, this.xClass.getName())); } if (!persistentAttributeMap.containsKey(name)) { persistentAttributeMap.put(getter.getName(), getter); persistentAttributesFromGetters.put(name, getter); } } } } public XClass getEntityAtStake() { return this.entityAtStake; } public XClass getDeclaringClass() { return this.xClass; } public AccessType getClassLevelAccessType() { return this.classLevelAccessType; } public Collection<XProperty> getProperties() { this.assertTypesAreResolvable(); return Collections.unmodifiableCollection(this.persistentAttributeMap.values()); } private void assertTypesAreResolvable() { Iterator var1 = this.persistentAttributeMap.values().iterator(); XProperty xProperty; do { if (!var1.hasNext()) { return; } xProperty = (XProperty)var1.next(); } while(xProperty.isTypeResolved() || discoverTypeWithoutReflection(xProperty)); String msg = "Property " + StringHelper.qualify(this.xClass.getName(), xProperty.getName()) + " has an unbound type and no explicit target entity. Resolve this Generic usage issue or set an explicit target attribute (eg @OneToMany(target=) or use an explicit @Type"; throw new AnnotationException(msg); } private AccessType determineLocalClassDefinedAccessStrategy() { AccessType hibernateDefinedAccessType = AccessType.DEFAULT; AccessType jpaDefinedAccessType = AccessType.DEFAULT; org.hibernate.annotations.AccessType accessType = this.xClass.getAnnotation(org.hibernate.annotations.AccessType.class); if (accessType != null) { hibernateDefinedAccessType = AccessType.getAccessStrategy(accessType.value()); } Access access = this.xClass.getAnnotation(Access.class); if (access != null) { jpaDefinedAccessType = AccessType.getAccessStrategy(access.value()); } if (hibernateDefinedAccessType != AccessType.DEFAULT && jpaDefinedAccessType != AccessType.DEFAULT && hibernateDefinedAccessType != jpaDefinedAccessType) { throw new org.hibernate.MappingException("@AccessType and @Access specified with contradicting values. Use of @Access only is recommended. "); } else { AccessType classDefinedAccessType; if (hibernateDefinedAccessType != AccessType.DEFAULT) { classDefinedAccessType = hibernateDefinedAccessType; } else { classDefinedAccessType = jpaDefinedAccessType; } return classDefinedAccessType; } } private static boolean discoverTypeWithoutReflection(XProperty p) { if (p.isAnnotationPresent(OneToOne.class) && !p.getAnnotation(OneToOne.class).targetEntity().equals(Void.TYPE)) { return true; } else if (p.isAnnotationPresent(OneToMany.class) && !p.getAnnotation(OneToMany.class).targetEntity().equals(Void.TYPE)) { return true; } else if (p.isAnnotationPresent(ManyToOne.class) && !p.getAnnotation(ManyToOne.class).targetEntity().equals(Void.TYPE)) { return true; } else if (p.isAnnotationPresent(ManyToMany.class) && !p.getAnnotation(ManyToMany.class).targetEntity().equals(Void.TYPE)) { return true; } else if (p.isAnnotationPresent(Any.class)) { return true; } else if (p.isAnnotationPresent(ManyToAny.class)) { if (!p.isCollection() && !p.isArray()) { throw new AnnotationException("@ManyToAny used on a non collection non array property: " + p.getName()); } else { return true; } } else if (p.isAnnotationPresent(Type.class)) { return true; } else { return p.isAnnotationPresent(Target.class); } } private static boolean mustBeSkipped(XProperty property) { return property.isAnnotationPresent(Transient.class) || "net.sf.cglib.transform.impl.InterceptFieldCallback".equals(property.getType().getName()) || "org.hibernate.bytecode.internal.javassist.FieldHandler".equals(property.getType().getName()); } }