/**
 *    Copyright 2006-2017 the original author or authors.
 *
 *    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 org.mybatis.generator.plugins;

import java.time.Instant;
import java.util.List;
import java.util.Properties;

import org.mybatis.generator.api.IntrospectedTable;
import org.mybatis.generator.api.PluginAdapter;
import org.mybatis.generator.api.dom.java.Field;
import org.mybatis.generator.api.dom.java.FullyQualifiedJavaType;
import org.mybatis.generator.api.dom.java.JavaVisibility;
import org.mybatis.generator.api.dom.java.TopLevelClass;

/**
 * This plugin adds the java.io.Serializable marker interface to all generated
 * model objects.
 * 
 * <p>This plugin demonstrates adding capabilities to generated Java artifacts, and
 * shows the proper way to add imports to a compilation unit.
 * 
 * <p>Important: This is a simplistic implementation of serializable and does not
 * attempt to do any versioning of classes.
 * 
 * @author Jeff Butler
 * 
 */
public class SerializablePlugin extends PluginAdapter {

    private FullyQualifiedJavaType serializable;
    private FullyQualifiedJavaType gwtSerializable;
    private boolean addGWTInterface;
    private boolean suppressJavaInterface;

    public SerializablePlugin() {
        super();
        serializable = new FullyQualifiedJavaType("java.io.Serializable"); //$NON-NLS-1$
        gwtSerializable = new FullyQualifiedJavaType("com.google.gwt.user.client.rpc.IsSerializable"); //$NON-NLS-1$
    }

    @Override
    public boolean validate(List<String> warnings) {
        // this plugin is always valid
        return true;
    }

    @Override
    public void setProperties(Properties properties) {
        super.setProperties(properties);
        addGWTInterface = Boolean.valueOf(properties.getProperty("addGWTInterface")); //$NON-NLS-1$
        suppressJavaInterface = Boolean.valueOf(properties.getProperty("suppressJavaInterface")); //$NON-NLS-1$
    }

    @Override
    public boolean modelBaseRecordClassGenerated(TopLevelClass topLevelClass,
            IntrospectedTable introspectedTable) {
        makeSerializable(topLevelClass, introspectedTable);
        return true;
    }

    @Override
    public boolean modelPrimaryKeyClassGenerated(TopLevelClass topLevelClass,
            IntrospectedTable introspectedTable) {
        makeSerializable(topLevelClass, introspectedTable);
        return true;
    }

    @Override
    public boolean modelRecordWithBLOBsClassGenerated(
            TopLevelClass topLevelClass, IntrospectedTable introspectedTable) {
        makeSerializable(topLevelClass, introspectedTable);
        return true;
    }

    protected void makeSerializable(TopLevelClass topLevelClass,
            IntrospectedTable introspectedTable) {
        if (addGWTInterface) {
            topLevelClass.addImportedType(gwtSerializable);
            topLevelClass.addSuperInterface(gwtSerializable);
        }

        if (!suppressJavaInterface) {
            topLevelClass.addImportedType(serializable);
            topLevelClass.addSuperInterface(serializable);

            Field field = new Field();
            field.setFinal(true);
            field.setInitializationString(topLevelClass.hashCode() * Instant.now().getEpochSecond() + "L"); //$NON-NLS-1$
            field.setName("serialVersionUID"); //$NON-NLS-1$
            field.setStatic(true);
            field.setType(new FullyQualifiedJavaType("long")); //$NON-NLS-1$
            field.setVisibility(JavaVisibility.PRIVATE);
            context.getCommentGenerator().addFieldComment(field, introspectedTable);

            topLevelClass.addField(field);
        }
    }
}

@@ -760,16 +760,50 @@
 perties;
+%0Aimport java.io.ObjectStreamClass;
 %0A%0Aimport
@@ -3762,63 +3762,67 @@
 ing(
-topLevelClass.hashCode() * Instant.now().getEpochSecond
+ObjectStreamClass.lookup(topLevelClass).getSerialVersionUID
 () +

修改序列号生成方式，和Eclipse等IDE的生成效果保持一致