MyBatis Generator生成DAO 的时候，生成的类都是没有序列化的。

还以为要手工加入（開始是手工加入的），今天遇到分页的问题，才发现生成的时候能够加入插件。

既然分页能够有插件。序列化是不是也有呢。

果然SerializablePlugin，已经给我们提供好了。

立即高端大气了起来。每一个model对象都乖乖的带上了Serializable接口。

无奈仅仅有model对象是不够的，做分布式开发的话。Example对象也必需要序列化。

于是下载了SerializablePlugin的源代码。model能够有。Example肯定也能够有。不出所料稍作改动就加上了。

（直接用原来的源代码加入了自己的代码）

import org.mybatis.generator.api.IntrospectedTable;import org.mybatis.generator.api.PluginAdapter;import org.mybatis.generator.api.dom.java.*;import java.util.List;import java.util.Properties;/** * Created by tiantao on 15-7-1. */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"); //$NON-NLS-1$    }    public boolean validate(List
     
       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;    }    /**     * 加入给Example类序列化的方法     * @param topLevelClass     * @param introspectedTable     * @return     */    @Override    public boolean modelExampleClassGenerated(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("1L"); //$NON-NLS-1$            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);        }    }}
     

哇咔咔，太好用了。Example都加上了。

只是问题还没有完，Example里还有内部类。假设不序列化还是会报错。

这次明显更刚才的套路不一样了。没有抱太大希望。

无意间发现了还有一个插件类，也是包里自带的。

发现了宝藏，这里居然有对内部类的操作。

import java.util.List;import org.mybatis.generator.api.PluginAdapter;import org.mybatis.generator.api.IntrospectedColumn;import org.mybatis.generator.api.IntrospectedTable;import org.mybatis.generator.api.dom.java.FullyQualifiedJavaType;import org.mybatis.generator.api.dom.java.InnerClass;import org.mybatis.generator.api.dom.java.JavaVisibility;import org.mybatis.generator.api.dom.java.Method;import org.mybatis.generator.api.dom.java.Parameter;import org.mybatis.generator.api.dom.java.TopLevelClass;import org.mybatis.generator.codegen.ibatis2.Ibatis2FormattingUtilities;/** * This plugin demonstrates adding methods to the example class to enable * case-insensitive LIKE searches. It shows hows to construct new methods and * add them to an existing class. *  * This plugin only adds methods for String fields mapped to a JDBC character * type (CHAR, VARCHAR, etc.) *  * @author Jeff Butler *  */public class CaseInsensitiveLikePlugin extends PluginAdapter {    /**     *      */    public CaseInsensitiveLikePlugin() {        super();    }    public boolean validate(List
     
       warnings) {        return true;    }    @Override    public boolean modelExampleClassGenerated(TopLevelClass topLevelClass,            IntrospectedTable introspectedTable) {        InnerClass criteria = null;        // first, find the Criteria inner class        for (InnerClass innerClass : topLevelClass.getInnerClasses()) {            if ("GeneratedCriteria".equals(innerClass.getType().getShortName())) { //$NON-NLS-1$                criteria = innerClass;                break;            }        }        if (criteria == null) {            // can't find the inner class for some reason, bail out.            return true;        }        for (IntrospectedColumn introspectedColumn : introspectedTable                .getNonBLOBColumns()) {            if (!introspectedColumn.isJdbcCharacterColumn()                    || !introspectedColumn.isStringColumn()) {                continue;            }            Method method = new Method();            method.setVisibility(JavaVisibility.PUBLIC);            method.addParameter(new Parameter(introspectedColumn                    .getFullyQualifiedJavaType(), "value")); //$NON-NLS-1$            StringBuilder sb = new StringBuilder();            sb.append(introspectedColumn.getJavaProperty());            sb.setCharAt(0, Character.toUpperCase(sb.charAt(0)));            sb.insert(0, "and"); //$NON-NLS-1$            sb.append("LikeInsensitive"); //$NON-NLS-1$            method.setName(sb.toString());            method.setReturnType(FullyQualifiedJavaType.getCriteriaInstance());            sb.setLength(0);            sb.append("addCriterion(\"upper("); //$NON-NLS-1$            sb.append(Ibatis2FormattingUtilities                    .getAliasedActualColumnName(introspectedColumn));            sb.append(") like\", value.toUpperCase(), \""); //$NON-NLS-1$            sb.append(introspectedColumn.getJavaProperty());            sb.append("\");"); //$NON-NLS-1$            method.addBodyLine(sb.toString());            method.addBodyLine("return (Criteria) this;"); //$NON-NLS-1$            criteria.addMethod(method);        }        return true;    }}
     

把原来的方法再优化一下下。

import org.mybatis.generator.api.IntrospectedTable;import org.mybatis.generator.api.PluginAdapter;import org.mybatis.generator.api.dom.java.*;import java.util.List;import java.util.Properties;/** * Created by tiantao on 15-7-1. */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"); //$NON-NLS-1$    }    public boolean validate(List
     
       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;    }    /**     * 加入给Example类序列化的方法     * @param topLevelClass     * @param introspectedTable     * @return     */    @Override    public boolean modelExampleClassGenerated(TopLevelClass topLevelClass,IntrospectedTable introspectedTable){        makeSerializable(topLevelClass, introspectedTable);        for (InnerClass innerClass : topLevelClass.getInnerClasses()) {            if ("GeneratedCriteria".equals(innerClass.getType().getShortName())) { //$NON-NLS-1$                innerClass.addSuperInterface(serializable);            }            if ("Criteria".equals(innerClass.getType().getShortName())) { //$NON-NLS-1$                innerClass.addSuperInterface(serializable);            }            if ("Criterion".equals(innerClass.getType().getShortName())) { //$NON-NLS-1$                innerClass.addSuperInterface(serializable);            }        }        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("1L"); //$NON-NLS-1$            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);        }    }}
     

哇咔咔。成功了。