Java MyBatis (3)------Detailed custom Generator Plugin

1. Create base class

In a project, we often have to build a base class of entity classes with common methods to improve code reuse.
Suppose each table has field IDs and username, and each table requires a similar crud method (such as checking XX according to the primary key).

public class Basemodel implements Serializable {private String ID;
    private String name;
    Private Date CreateDate;
    Private Date modifydate;
    Private String creator;

    private String modifier;
    Public String GetId () {return id;
    public void SetId (String id) {this.id = ID;
    Public String GetName () {return name;
    public void SetName (String name) {this.name = name;
    Public Date Getcreatedate () {return createdate;
    The public void Setcreatedate (Date createdate) {this.createdate = CreateDate;
    Public Date Getmodifydate () {return modifydate;
    The public void Setmodifydate (Date modifydate) {this.modifydate = modifydate;
    Public String Getcreator () {return creator;
    } public void Setcreator (String creator) {this.creator = creator;
    Public String Getmodifier () {return modifier;

}    public void Setmodifier (String modifier) {this.modifier = modifier;
    } public interface Basedao<t extends basemodel> {list<t> selectall ();
    int Deletebyprimarykey (String ID);
    int Insert (T entity);
    int update (T entity, String ID);
T Selectbyprimarykey (String ID);
 }

2, writing Generatorconfig.xml

<?xml version= "1.0" encoding= "UTF-8"?> <! DOCTYPE generatorconfiguration Public "-//mybatis.org//dtd mybatis generator Configuration 1.0//en" "http: Mybatis.org/dtd/mybatis-generator-config_1_0.dtd "> <generatorConfiguration> <context id=" Basetables "Targetruntime=" MyBatis3 > <!--automatically generate ToString method--> <plugin type= "Org.mybatis.generator.plugin S.tostringplugin "/> <!--automatic generation of Equals method and Hashcode method--> <plugin type=" Org.mybatis.generator.plugi Ns. Equalshashcodeplugin "/> <!--customization method--> <plugin type=" Com.charlin.erp.common.base.plugin.Custom Ermapperplugin "> <property name=" targetproject "value=".
        /erp/src/main/java "/> <property name= targetpackage" value= "Com.charlin.erp.common.base.dao"/> </plugin> <!--custom method--> <plugin type= "Com.charlin.erp.common.base.plugin.SerializablePlu Gin "/> <Commentgenerator> <!--whether to remove automatically generated comments true: false: No--> <property name= "suppressallcom ments "value=" true "/> </commentGenerator> <!--database connection information: Driver class, connection address, user name, password--> <jdbc Connection driverclass= "Com.mysql.jdbc.Driver" connectionurl= "jdbc://mysql://localhost:3306/erp?ch Ararterencoding=utf8 "userid=" root password= "Sasa" ></jdbcConnection> <!--default F
        alse, resolves the jdbc decimal and NUMERIC types to integers, and resolves the jdbc decimal and NUMERIC types to Java.math.BigDecimal--> when True <javaTypeResolver> <property name= "Forcebigdecimals" value= "true" ></property> & Lt;/javatyperesolver> <!--targetproject: position to generate PO class--> <javamodelgenerator targetpackage= "com.c
            Harlin.erp.common.base.model "targetproject=". \src "> <!--enablesubpackages: Let schema be the suffix of the package--> <property Name= "Enablesubpackages" value= "true"/> <!--the space before and after the value returned from the database is cleaned--> <property name= "Trimstri NGS "value=" true "/> <!--horizontal--> <property name=" Rootclass "value="
        . Base.model.BaseModel "> </javaModelGenerator> <!--targetproject:mapper Map file build location--> <sqlmapgenerator targetpackage= "Com.charlin.erp.common.dao" targetproject= "\src" > <!--ENABLESUBPA Ckages: Allow schema as the suffix of the package--> <property name= "Enablesubpackages" value= "true"/> ator> <!--Targetpackage:mapper interface generated location--> <javaclientgenerator type= "Xmlmapper" targetpackage
            = "Com.charlin.erp.common.base.dao" targetproject= ". \src" > <!--enablesubpackages: Let schema be the suffix of the package--> <property name= "Enablesubpackages" value= "true"/> <property name= "Rootinterface" value= "C" Om.charlin.erp.common.baSe.dao.BaseDao "/> </javaClientGenerator> <!--Specify database table--> <table tablename=" items "></table> <table tablename=" Orders "></table> </context> </generatorconfiguratio N>

3, create Customermapperplugin

public class Customermapperplugin extends pluginadapter{private static final String Default_dao_super_class = "com.ch
    Arlin.erp.common.base.dao.BaseDao ";
    private static final String Default_expand_dao_super_class = "Com.charlin.erp.common.base.dao.BaseExpandDao";
    Private String Daotargetdir;
    Private String daotargetpackage;
    Private String Daosuperclass;
    Extend private String expanddaotargetpackage;
    Private String Expanddaosuperclass;

    Private Shellcallback shellcallback = null;
    Public Customermapperplugin () {this.shellcallback = new Defaultshellcallback (false); @Override public Boolean validate (list<string> warnings) {Daotargetdir = Properties.getproperty (
        "Targetproject");

        Boolean isdir = Stringhasvalue (Daotargetdir);
        Daotargetpackage = Properties.getproperty ("Targetpackage");

        Boolean ispackage = Stringhasvalue (daotargetpackage); Daosuperclass = Properties.getproperty ("DaosuperClass ");

        if (!stringhasvalue (daosuperclass)) Daosuperclass = Default_dao_super_class;
        Expanddaotargetpackage = Properties.getproperty ("Expanddaotargetpackage");
        Expanddaosuperclass = Properties.getproperty ("Expanddaosuperclass");

        if (!stringhasvalue (expanddaosuperclass)) Expanddaosuperclass = Default_expand_dao_super_class;
    return Isdir && ispackage;
        @Override public boolean sqlmapdocumentgenerated (document document, Introspectedtable introspectedtable) {
        XmlElement select = New XmlElement ("select");
        Select.addattribute (New Attribute ("id", "SelectAll"));
        Select.addattribute (New Attribute ("Resultmap", "Baseresultmap"));
        Select.addattribute (New Attribute ("ParameterType", Introspectedtable.getbaserecordtype ());

        Select.addelement (New TextElement ("SELECT * from" + introspectedtable.getfullyqualifiedtablenameatruntime ()));
XmlElement parentelement = Document.getrootelement ();        Parentelement.addelement (select);
    return super.sqlmapdocumentgenerated (document, introspectedtable); @Override public list<generatedjavafile> contextgenerateadditionaljavafiles (introspectedtable introspecte
        dtable) {Javaformatter javaformatter = Context.getjavaformatter ();
        list<generatedjavafile> mapperjavafiles = new arraylist<generatedjavafile> (); For (Generatedjavafile javaFile:introspectedTable.getGeneratedJavaFiles ()) {Compilationunit unit = Javafile.
            Getcompilationunit ();

            Fullyqualifiedjavatype Basemodeljavatype = Unit.gettype ();

            String shortname = Basemodeljavatype.getshortname ();

            Generatedjavafile mapperjavafile = null;
                    if (Shortname.endswith ("Mapper")) {//Extended Mapper if (Stringhasvalue (expanddaotargetpackage)) { Interface mapperinterface = new Interface (Expanddaotargetpackage + "." + Shortname.replace ("MappeR "," Expandmapper "));
                    Mapperinterface.setvisibility (Javavisibility.public);
                    Mapperinterface.addjavadocline ("/**");
                    Mapperinterface.addjavadocline ("*" + ShortName + "extended");

                    Mapperinterface.addjavadocline ("* *");
                    Fullyqualifiedjavatype Daosupertype = new Fullyqualifiedjavatype (expanddaosuperclass);
                    Mapperinterface.addimportedtype (Daosupertype);

                    Mapperinterface.addsuperinterface (Daosupertype);
                    Mapperjavafile = new Generatedjavafile (Mapperinterface, Daotargetdir, Javaformatter);
                        try {File Mapperdir = shellcallback.getdirectory (Daotargetdir, daotargetpackage);
                        File Mapperfile = new file (Mapperdir, Mapperjavafile. GetFileName ());
                            if (!mapperfile.exists ()) {//mapperfile.mkdirs (); MappeRjavafiles.add (Mapperjavafile);
                    } catch (Exception e) {e.printstacktrace ();  }}else if (!shortname.endswith ("Example")) {Interface mapperinterface = new
                Interface (Daotargetpackage + "." + ShortName + "Mapper");
                Mapperinterface.setvisibility (Javavisibility.public);
                Mapperinterface.addjavadocline ("/**");
                Mapperinterface.addjavadocline ("* generated automatically by the MyBatis Generator tool, please do not modify manually");

                Mapperinterface.addjavadocline ("* *");
                Fullyqualifiedjavatype Daosupertype = new Fullyqualifiedjavatype (daosuperclass);
                Add generics support Daosupertype.addtypeargument (Basemodeljavatype);
                Mapperinterface.addimportedtype (Basemodeljavatype);
                Mapperinterface.addimportedtype (Daosupertype); Mapperinterface.addsuperinterface (Daosupertype);

                Mapperjavafile = new Generatedjavafile (Mapperinterface, Daotargetdir, Javaformatter);
            Mapperjavafiles.add (Mapperjavafile);
    } return mapperjavafiles; }
}

4, Operation

public class Testgeneratorrun {

    @Test public
    void Test () throws exception{

    } public

    static void main ( String[] args) throws Exception {
        file configfile  = new File ("e:\\git\\erp\\common\\src\\main\\java\\com\\ Charlin\\erp\\common\\base\\generator\\generatorconfig.xml ");
        list<string> warnings = new arraylist<string> ();
        Boolean overwrite = true;
        Configurationparser cp = new Configurationparser (warnings);
        String FilePath = MyBatisGeneratorRun.class.getClassLoader (). GetResource (""). GetPath () + "Generatorconfig.xml";
        InputStream InputStream = new FileInputStream (configfile);
        Configuration config = cp.parseconfiguration (inputstream);
        Defaultshellcallback DSC = new Defaultshellcallback (overwrite);
        Mybatisgenerator mybatisgenerator = new Mybatisgenerator (config, DSC, warnings);
        Mybatisgenerator.generate (null);
    }

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