使用MyBatis-Generator如何自动生成映射文件

mybatis-generator自动生成映射文件

生成的方式一共有三种

1、使用cmd命令方式生成

首先在generator.xml中指定数据库驱动包位置，然后在mybatis-generator-core-1.3.1包下创建一个src文件夹（否则生成的文件没地方放）

生产的mapper.xml文件与domain类放在一个报下面（否则无法映射）

e:\>java -jar e:\mybatis-generator-core-1.3.1\lib\mybatis-generator-core-1.3.1.j
ar -configfile e:\mybatis-generator-core-1.3.1\generator.xml -overwrite

generator.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>
        <!-- 数据库驱动位置 -->
    <classpathentry location="e:\mybatis-generator-core-1.3.1\mysql-connector-java-5.0.8-bin.jar" />
    <context id="db2tables" targetruntime="mybatis3">
    <commentgenerator>
        <property name="suppressallcomments" value="true" />
    </commentgenerator>
        <!-- 数据库的url、用户名、密码 -->
    <jdbcconnection driverclass="com.mysql.jdbc.driver" connectionurl="jdbc:mysql://localhost:3306/dbo" userid="root" password="123456">
    </jdbcconnection>
    <javatyperesolver >
        <property name="forcebigdecimals" value="false" />
    </javatyperesolver>
        <!-- 生成模型的包名和位置 -->
    <javamodelgenerator targetpackage="com.paywing.domain" targetproject="e:\mybatis-generator-core-1.3.1\src">
        <property name="enablesubpackages" value="true" />
        <property name="trimstrings" value="true" />
    </javamodelgenerator>
        <!-- 生成的映射文件包名和位置 -->
    <sqlmapgenerator targetpackage="com.paywing.mapping"  targetproject="e:\mybatis-generator-core-1.3.1\src">
        <property name="enablesubpackages" value="true" />
    </sqlmapgenerator>
        <!-- 生成dao的包名和位置 -->
    <javaclientgenerator type="xmlmapper" targetpackage="com.paywing.dao"  targetproject="e:\mybatis-generator-core-1.3.1\src">
        <property name="enablesubpackages" value="true" />
    </javaclientgenerator>
        <!-- 生成那些表 tablename表名，domainobjectname应于数据库表的javabean类名-->
        <table tablename="tb_bookinfo" domainobjectname="tb_bookinfo" enablecountbyexample="false" enableupdatebyexample="false" enabledeletebyexample="false" enableselectbyexample="false" selectbyexamplequeryid="false"/>
        <table tablename="tb_booktype" domainobjectname="tb_booktype" enablecountbyexample="false" enableupdatebyexample="false" enabledeletebyexample="false" enableselectbyexample="false" selectbyexamplequeryid="false" />  
    </context>
</generatorconfiguration>

2、使用maven方式生成

（这种方式在各个工具下都能使用，推荐使用这种方式）

generator.properties

    #工程src路径 这里如果是maven启动的话去掉mybatis/ 
project=mybatis/src/main/java
    #工程存放mapper.xml路径  这里如果是maven启动的话去掉mybatis/ 
resource=mybatis/src/main/resources
package_domain=com.practice.mybatis.entity
package_mapper=mappers.test
package_dao=com.practice.mybatis.dao
package_service=com.practice.mybatis.service
    #\u6307\u5b9a\u6570\u636e\u8fde\u63a5\u9a71\u52a8jar\u5730\u5740  
classpath=d:/maven_lib/mysql/mysql-connector-java/5.1.30/mysql-connector-java-5.1.30.jar 
jdbc.driver=com.mysql.jdbc.driver
jdbc.url=jdbc:mysql://localhost:3306/test?useunicode=true&characterencoding=utf-8
jdbc.user=root
jdbc.password=123456

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>
        <!-- 引入配置文件 -->  
    <properties resource="generator.properties"/> 
        <!-- 数据库驱动位置 --> 
    <classpathentry location="${classpath}" />
        <!-- 一个数据库一个context, targetruntime:此属性用于指定生成的代码的运行时环境 ,mybatis3:*这是默认值*,mybatis3simple不生成example查询(避免后面一个一个表设置)     defaultmodeltype:如何生成实体类,flat表示为每一张表生成一个实体类，推荐使用--> 
<context id="mysqltables" targetruntime="com.practice.mybatis.tkmybatis3impl" defaultmodeltype="flat">
        <!-- 注释  type表示自定义注释-->
    <commentgenerator type="com.practice.mybatis.mycommentgenerator">
        <!-- 生成文件的编码 (eclipse插件的时候这里并没有什么卵用，需要在eclipse根目录的eclipse.ini最后添加 -dfile.encoding=utf-8  )-->
        <property name="javafileencoding" value="utf-8"/>
        <!-- 是否取消注释 -->
        <property name="suppressallcomments" value="false" />
        <property name="addremarkcomments" value="true"/>
        <!-- 是否生成注释代时间戳 -->
        <property name="suppressdate" value="true" />
        <!-- 当表名或者字段名为sql关键字的时候，可以设置该属性为true，mbg会自动给表名或字段名添加**分隔符**  -->    
        <property name="autodelimitkeywords" value="true"></property>
        <!-- 由于beginningdelimiter和endingdelimiter的默认值为双引号(")，在mysql中不能这么写，所以还要将这两个默认值改为**反单引号(`)** -->
        <property name="beginningdelimiter" value="`"/>
        <property name="endingdelimiter" value="`"/>  
    </commentgenerator>
        <!-- 数据库的url、用户名、密码 --> 
    <jdbcconnection driverclass="${jdbc.driver}" 
        connectionurl="${jdbc.url}" 
        userid="${jdbc.user}" 
        password="${jdbc.password}">
    </jdbcconnection>
        <!-- 类型转换 --> 
    <javatyperesolver >
        <!-- 是否使用bigdecimal， false可自动转化以下类型(long, integer, short, etc.) -->  
        <property name="forcebigdecimals" value="false" />
    </javatyperesolver>
        <!-- 生成模型的包名和位置 -->
    <javamodelgenerator targetpackage="${package_domain}" targetproject="${project}">
        <!-- 是否在当前路径下新加一层schema,eg：fase路径com.goshop.domain"， true:com.goshop.domain".[schemaname] -->
        <property name="enablesubpackages" value="false" />
        <!-- 是否针对string类型的字段在set的时候进行trim调用 -->
        <property name="trimstrings" value="true" />
    </javamodelgenerator>
        <!-- 生成的映射文件包名和位置 -->
    <sqlmapgenerator targetpackage="${package_mapper}"  targetproject="${resource}">
        <!-- 是否在当前路径下新加一层schema,eg：fase路径com.goshop.domain"， true:com.goshop.domain".[schemaname] -->
        <property name="enablesubpackages" value="true" />
    </sqlmapgenerator>
        <!-- 生成dao的包名和位置 type 1、annotatedmapper注解形式 2、xmlmapper xml配置文件形式-->
    <javaclientgenerator type="xmlmapper" targetpackage="${package_dao}"  targetproject="${project}">
        <property name="enablesubpackages" value="true" />
    </javaclientgenerator>
        <!-- 生成那些表 tablename表名 mappername 生成dao的名称，domainobjectname应于数据库表的javabean类名，enable*byexample是否生成 example类 -->
        <!-- <table tablename="sys_user" domainobjectname="sysuser" enablecountbyexample="false" enableupdatebyexample="false" enabledeletebyexample="false" enableselectbyexample="false" selectbyexamplequeryid="false"/> -->
            <!-- 忽略列，不生成bean 字段   
            <ignorecolumn column="fred" />-->  
            <!-- 指定列的java数据类型   
            <columnoverride column="long_varchar_field" jdbctype="varchar" />-->  
        <table tablename="%" mappername="{0}dao">
            <columnoverride column="remarks" jdbctype="varchar" />
        </table>
</context>
</generatorconfiguration>

注意：这里由于需要自定义中文注释，因此需要修改源码，这里附上修改后的代码。

mycommentgenerator.java

这个文件是关于注释的部分，只需要实现commentgenerator接口就可以。

/**
 *    copyright 2006-2016 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 com.practice.mybatis;
import java.text.simpledateformat;
import java.util.date;
import java.util.list;
import java.util.properties;
import org.mybatis.generator.api.commentgenerator;
import org.mybatis.generator.api.introspectedcolumn;
import org.mybatis.generator.api.introspectedtable;
import org.mybatis.generator.api.dom.java.compilationunit;
import org.mybatis.generator.api.dom.java.field;
import org.mybatis.generator.api.dom.java.fullyqualifiedjavatype;
import org.mybatis.generator.api.dom.java.innerclass;
import org.mybatis.generator.api.dom.java.innerenum;
import org.mybatis.generator.api.dom.java.javaelement;
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.api.dom.xml.textelement;
import org.mybatis.generator.api.dom.xml.xmlelement;
import org.mybatis.generator.config.mergeconstants;
import org.mybatis.generator.config.propertyregistry;
import org.mybatis.generator.internal.util.stringutility;
/**
 * 修改mybatis generator 生成的所有注释的文档
 *
 * @author wl
 */
public class mycommentgenerator implements commentgenerator {
    /** the properties. */
    private properties properties;
    /** the suppress date. */
    private boolean suppressdate;
    /** the suppress all comments. */
    private boolean suppressallcomments;
    /** the addition of table remark's comments.
     * if suppressallcomments is true, this option is ignored*/
    private boolean addremarkcomments;
    private simpledateformat dateformat;
    /**
     * instantiates a new default comment generator.
     */
    public mycommentgenerator() {
        super();
        properties = new properties();
        suppressdate = false;
        suppressallcomments = false;
        addremarkcomments = false;
    }
    /* (non-javadoc)
     * @see org.mybatis.generator.api.commentgenerator#addjavafilecomment(org.mybatis.generator.api.dom.java.compilationunit)
     */
    public void addjavafilecomment(final compilationunit compilationunit) {
        // add no file level comments by default
    }
    /**
     * adds a suitable comment to warn users that the element was generated, and when it was generated.
     *
     * @param xmlelement
     *            the xml element
     */
    public void addcomment(final xmlelement xmlelement) {
        if (suppressallcomments) {
            return;
        }
        xmlelement.addelement(new textelement("<!--")); //$non-nls-1$
        final stringbuilder sb = new stringbuilder();
//        sb.append("  warning - "); //$non-nls-1$
        sb.append(mergeconstants.new_element_tag);
        xmlelement.addelement(new textelement(sb.tostring()));
//        xmlelement
//                .addelement(new textelement(
//                        "  this element is automatically generated by mybatis generator, do not modify.")); //$non-nls-1$
//
//        final string s = getdatestring();
//        if (s != null) {
//            sb.setlength(0);
//            sb.append("  this element was generated on "); //$non-nls-1$
//            sb.append(s);
//            sb.append('.');
//            xmlelement.addelement(new textelement(sb.tostring()));
//        }
        xmlelement.addelement(new textelement("-->")); //$non-nls-1$
    }
    /* (non-javadoc)
     * @see org.mybatis.generator.api.commentgenerator#addrootcomment(org.mybatis.generator.api.dom.xml.xmlelement)
     */
    public void addrootcomment(final xmlelement rootelement) {
        // add no document level comments by default
    }
    /* (non-javadoc)
     * @see org.mybatis.generator.api.commentgenerator#addconfigurationproperties(java.util.properties)
     */
    public void addconfigurationproperties(final properties properties) {
        this.properties.putall(properties);
        suppressdate = istrue(properties
                .getproperty(propertyregistry.comment_generator_suppress_date));
        suppressallcomments = istrue(properties
                .getproperty(propertyregistry.comment_generator_suppress_all_comments));
        addremarkcomments = istrue(properties
                .getproperty(propertyregistry.comment_generator_add_remark_comments));
        final string dateformatstring = properties.getproperty(propertyregistry.comment_generator_date_format);
        if (stringutility.stringhasvalue(dateformatstring)) {
            dateformat = new simpledateformat(dateformatstring);
        }
    }
       public static boolean istrue(string s) {
            return "true".equalsignorecase(s); //$non-nls-1$
       }
    /**
     * this method adds the custom javadoc tag for. you may do nothing if you do not wish to include the javadoc tag -
     * however, if you do not include the javadoc tag then the java merge capability of the eclipse plugin will break.
     *
     * @param javaelement
     *            the java element
     * @param markasdonotdelete
     *            the mark as do not delete
     */
    protected void addjavadoctag(final javaelement javaelement,
            final boolean markasdonotdelete) {
        javaelement.addjavadocline(" *"); //$non-nls-1$
        final stringbuilder sb = new stringbuilder();
        sb.append(" * "); //$non-nls-1$
        sb.append(mergeconstants.new_element_tag);
        if (markasdonotdelete) {
            sb.append(" do_not_delete_during_merge"); //$non-nls-1$
        }
        final string s = getdatestring();
        if (s != null) {
            sb.append(' ');
            sb.append(s);
        }
        javaelement.addjavadocline(sb.tostring());
    }
    /**
     * this method returns a formated date string to include in the javadoc tag
     * and xml comments. you may return null if you do not want the date in
     * these documentation elements.
     * 
     * @return a string representing the current timestamp, or null
     */
    protected string getdatestring() {
        if (suppressdate) {
            return null;
        } else if (dateformat != null) {
            return dateformat.format(new date());
        } else {
            return new date().tostring();
        }
    }
    /* (non-javadoc)
     * @see org.mybatis.generator.api.commentgenerator#addclasscomment(org.mybatis.generator.api.dom.java.innerclass, org.mybatis.generator.api.introspectedtable)
     */
    public void addclasscomment(final innerclass innerclass,
            final introspectedtable introspectedtable) {
        if (suppressallcomments) {
            return;
        }
        final stringbuilder sb = new stringbuilder();
        innerclass.addjavadocline("/**"); //$non-nls-1$
        innerclass
                .addjavadocline(" * this class was generated by mybatis generator."); //$non-nls-1$
        sb.append(" * this class corresponds to the database table "); //$non-nls-1$
        sb.append(introspectedtable.getfullyqualifiedtable());
        innerclass.addjavadocline(sb.tostring());
        addjavadoctag(innerclass, false);
        innerclass.addjavadocline(" */"); //$non-nls-1$
    }
    /* (non-javadoc)
     * @see org.mybatis.generator.api.commentgenerator#addtoplevelclasscomment(org.mybatis.generator.api.dom.java.toplevelclass, org.mybatis.generator.api.introspectedtable)
     */
    public void addmodelclasscomment(final toplevelclass toplevelclass,
            final introspectedtable introspectedtable) {
        if (suppressallcomments  || !addremarkcomments) {
            return;
        }
        final stringbuilder sb = new stringbuilder();
        toplevelclass.addjavadocline("/**"); //$non-nls-1$
        final string remarks = introspectedtable.getremarks();
        if (addremarkcomments && stringutility.stringhasvalue(remarks)) {
            toplevelclass.addjavadocline(" * database table remarks:");
            final string[] remarklines = remarks.split(system.getproperty("line.separator"));  //$non-nls-1$
            for (string remarkline : remarklines) {
                toplevelclass.addjavadocline(" *   " + remarkline);  //$non-nls-1$
            }
        }
//        toplevelclass.addjavadocline(" *"); //$non-nls-1$
//        toplevelclass
//                .addjavadocline(" * this class was generated by mybatis generator."); //$non-nls-1$
//        sb.append(" * this class corresponds to the database table "); //$non-nls-1$
        sb.append(" * 对应于数据库表  "); //$non-nls-1$
        sb.append(introspectedtable.getfullyqualifiedtable());
        toplevelclass.addjavadocline(sb.tostring());
        addjavadoctag(toplevelclass, true);
        toplevelclass.addjavadocline(" */"); //$non-nls-1$
    }
    /* (non-javadoc)
     * @see org.mybatis.generator.api.commentgenerator#addenumcomment(org.mybatis.generator.api.dom.java.innerenum, org.mybatis.generator.api.introspectedtable)
     */
    public void addenumcomment(final innerenum innerenum,
            final introspectedtable introspectedtable) {
        if (suppressallcomments) {
            return;
        }
//        stringbuilder sb = new stringbuilder();
        innerenum.addjavadocline("/**"); //$non-nls-1$
//        innerenum
//                .addjavadocline(" * this enum was generated by mybatis generator."); //$non-nls-1$
//
//        sb.append(" * this enum corresponds to the database table "); //$non-nls-1$
//        sb.append(introspectedtable.getfullyqualifiedtable());
//        innerenum.addjavadocline(sb.tostring());
        addjavadoctag(innerenum, false);
        innerenum.addjavadocline(" */"); //$non-nls-1$
    }
    /* (non-javadoc)
     * @see org.mybatis.generator.api.commentgenerator#addfieldcomment(org.mybatis.generator.api.dom.java.field, org.mybatis.generator.api.introspectedtable, org.mybatis.generator.api.introspectedcolumn)
     */
    public void addfieldcomment(final field field,
            final introspectedtable introspectedtable,
            final introspectedcolumn introspectedcolumn) {
        if (suppressallcomments) {
            return;
        }
        field.addjavadocline("/**"); //$non-nls-1$
        string remarks = introspectedcolumn.getremarks();
        if (addremarkcomments && stringutility.stringhasvalue(remarks)) {
            field.addjavadocline(" * database column remarks:");
            final string[] remarklines = remarks.split(system.getproperty("line.separator"));  //$non-nls-1$
            for (string remarkline : remarklines) {
                field.addjavadocline(" *   " + remarkline);  //$non-nls-1$
            }
        }
//        field.addjavadocline(" *"); //$non-nls-1$
        stringbuilder sb = new stringbuilder();
        sb.append(" * "+introspectedtable.getfullyqualifiedtable());
        sb.append('.');
        sb.append(introspectedcolumn.getactualcolumnname());
        sb.append(introspectedcolumn.getremarks()==null ? " " : " "+introspectedcolumn.getremarks());
        field.addjavadocline(sb.tostring());
        addjavadoctag(field, false);
        field.addjavadocline(" */"); //$non-nls-1$
    }
    /* (non-javadoc)
     * @see org.mybatis.generator.api.commentgenerator#addfieldcomment(org.mybatis.generator.api.dom.java.field, org.mybatis.generator.api.introspectedtable)
     */
    public void addfieldcomment(final field field, final introspectedtable introspectedtable) {
        if (suppressallcomments) {
            return;
        }
        final stringbuilder sb = new stringbuilder();
        field.addjavadocline("/**"); //$non-nls-1$
        field
                .addjavadocline(" * this field was generated by mybatis generator."); //$non-nls-1$
        sb.append(" * this field corresponds to the database table "); //$non-nls-1$
        sb.append(introspectedtable.getfullyqualifiedtable());
        field.addjavadocline(sb.tostring());
        addjavadoctag(field, false);
        field.addjavadocline(" */"); //$non-nls-1$
    }
    /* (non-javadoc)
     * @see org.mybatis.generator.api.commentgenerator#addgeneralmethodcomment(org.mybatis.generator.api.dom.java.method, org.mybatis.generator.api.introspectedtable)
     */
    public void addgeneralmethodcomment(final method method,
            final introspectedtable introspectedtable) {
        if (suppressallcomments) {
            return;
        }
        stringbuilder sb = new stringbuilder();
        method.addjavadocline("/**"); //$non-nls-1$
//        method
//                .addjavadocline(" * this method was generated by mybatis generator."); //$non-nls-1$
//
//        sb.append(" * this method corresponds to the database table "); //$non-nls-1$
//        sb.append(introspectedtable.getfullyqualifiedtable());
        list<parameter> parameters =  method.getparameters();
        for (parameter parameter : parameters) {
            sb.append(" *@param  ");
            sb.append(parameter.getname());
            sb.append(".");
            method.addjavadocline(sb.tostring());
            sb.delete(0, sb.length());
        }
        method.addjavadocline(method.getreturntype().getshortname()==null ? ""
                :" *@return "+method.getreturntype().getshortname()+".");
        addjavadoctag(method, false);
        method.addjavadocline(" */"); //$non-nls-1$
    }
    /* (non-javadoc)
     * @see org.mybatis.generator.api.commentgenerator#addgettercomment(org.mybatis.generator.api.dom.java.method, org.mybatis.generator.api.introspectedtable, org.mybatis.generator.api.introspectedcolumn)
     */
    public void addgettercomment(final method method,
            final introspectedtable introspectedtable,
            final introspectedcolumn introspectedcolumn) {
        if (suppressallcomments) {
            return;
        }
        stringbuilder sb = new stringbuilder();
        method.addjavadocline("/**"); //$non-nls-1$
//        method
//                .addjavadocline(" * this method was generated by mybatis generator."); //$non-nls-1$
//
//        sb.append(" * this method returns the value of the database column "); //$non-nls-1$
//        sb.append(introspectedtable.getfullyqualifiedtable());
//        sb.append('.');
//        sb.append(introspectedcolumn.getactualcolumnname());
//        method.addjavadocline(sb.tostring());
//
//        method.addjavadocline(" *"); //$non-nls-1$
//
//        sb.setlength(0);
//        sb.append(" * @return the value of "); //$non-nls-1$
//        sb.append(introspectedtable.getfullyqualifiedtable());
//        sb.append('.');
//        sb.append(introspectedcolumn.getactualcolumnname());
        sb.append(" * @return "+(
                introspectedcolumn.getactualcolumnname()==null ? "":introspectedcolumn.getactualcolumnname()));
        sb.append(" .");
        method.addjavadocline(sb.tostring());
        addjavadoctag(method, false);
        method.addjavadocline(" */"); //$non-nls-1$
    }
    /* (non-javadoc)
     * @see org.mybatis.generator.api.commentgenerator#addsettercomment(org.mybatis.generator.api.dom.java.method, org.mybatis.generator.api.introspectedtable, org.mybatis.generator.api.introspectedcolumn)
     */
    public void addsettercomment(final method method,
            final introspectedtable introspectedtable,
            final introspectedcolumn introspectedcolumn) {
        if (suppressallcomments) {
            return;
        }
        stringbuilder sb = new stringbuilder();
        method.addjavadocline("/**"); //$non-nls-1$
//        method
//                .addjavadocline(" * this method was generated by mybatis generator."); //$non-nls-1$
//
//        sb.append(" * this method sets the value of the database column "); //$non-nls-1$
//        sb.append(introspectedtable.getfullyqualifiedtable());
//        sb.append('.');
//        sb.append(introspectedcolumn.getactualcolumnname());
//        method.addjavadocline(sb.tostring());
//
//        method.addjavadocline(" *"); //$non-nls-1$
//
        parameter parm = method.getparameters().get(0);
        sb.setlength(0);
        sb.append(" * @param "); //$non-nls-1$
        sb.append(parm.getname());
        sb.append((introspectedcolumn.getremarks()==null ? " " : "  "+introspectedcolumn.getremarks()));
        sb.append(".");
//        sb.append(" the value for "); //$non-nls-1$
//        sb.append(introspectedtable.getfullyqualifiedtable());
//        sb.append('.');
//        sb.append(introspectedcolumn.getactualcolumnname());
        method.addjavadocline(sb.tostring());
        addjavadoctag(method, false);
        method.addjavadocline(" */"); //$non-nls-1$
    }
    /* (non-javadoc)
     * @see org.mybatis.generator.api.commentgenerator#addclasscomment(org.mybatis.generator.api.dom.java.innerclass, org.mybatis.generator.api.introspectedtable, boolean)
     */
    public void addclasscomment(final innerclass innerclass,
            final introspectedtable introspectedtable, final boolean markasdonotdelete) {
        if (suppressallcomments) {
            return;
        }
        final stringbuilder sb = new stringbuilder();
        innerclass.addjavadocline("/**"); //$non-nls-1$
        innerclass
                .addjavadocline(" * this class was generated by mybatis generator."); //$non-nls-1$
        sb.append(" * this class corresponds to the database table "); //$non-nls-1$
        sb.append(introspectedtable.getfullyqualifiedtable());
        innerclass.addjavadocline(sb.tostring());
        addjavadoctag(innerclass, markasdonotdelete);
        innerclass.addjavadocline(" */"); //$non-nls-1$
    }
}

 1.3.4 版本以后，mbg 在元素上提供了一个mappername 的属性，可以设置生成的 mapper 名字。

但是因为 tablename 属性支持通配符 %，在这种情况下就不能使用mappername属性设置了。为了解决这种情况，提供了一个插件可以用于通配符情况下的配置。

package com.practice.mybatis;
import java.text.messageformat;
import org.mybatis.generator.codegen.mybatis3.introspectedtablemybatis3simpleimpl;
/**
 * @author win7
 *生成dao后缀
 */
public class tkmybatis3impl extends introspectedtablemybatis3simpleimpl  {
    @override
    protected string calculatemybatis3xmlmapperfilename() {
        final stringbuilder sb = new stringbuilder();
        if (stringhasvalue(tableconfiguration.getmappername())) {
            string mappername = tableconfiguration.getmappername();
            final int ind = mappername.lastindexof('.');
            if (ind != -1) {
                mappername = mappername.substring(ind + 1);
            }
            //支持mappername = "{0}dao" 等用法
            sb.append(messageformat.format(mappername, fullyqualifiedtable.getdomainobjectname()));
            sb.append(".xml"); //$non-nls-1$
        } else {
            sb.append(fullyqualifiedtable.getdomainobjectname());
            sb.append("mapper.xml"); //$non-nls-1$
        }
        return sb.tostring();
    }
    public static boolean stringhasvalue(final string s) {
        return s != null && s.length() > 0;
    }
    @override
    protected void calculatejavaclientattributes() {
        if (context.getjavaclientgeneratorconfiguration() == null) {
            return;
        }
        final stringbuilder sb = new stringbuilder();
        sb.append(calculatejavaclientimplementationpackage());
        sb.append('.');
        sb.append(fullyqualifiedtable.getdomainobjectname());
        sb.append("daoimpl"); //$non-nls-1$
        setdaoimplementationtype(sb.tostring());
        sb.setlength(0);
        sb.append(calculatejavaclientinterfacepackage());
        sb.append('.');
        sb.append(fullyqualifiedtable.getdomainobjectname());
        sb.append("dao"); //$non-nls-1$
        setdaointerfacetype(sb.tostring());
        sb.setlength(0);
        sb.append(calculatejavaclientinterfacepackage());
        sb.append('.');
        if (stringhasvalue(tableconfiguration.getmappername())) {
            //支持mappername = "{0}dao" 等用法
            sb.append(messageformat.format(tableconfiguration.getmappername(), fullyqualifiedtable.getdomainobjectname()));
        } else {
            sb.append(fullyqualifiedtable.getdomainobjectname());
            sb.append("mapper"); //$non-nls-1$
        }
        setmybatis3javamappertype(sb.tostring());
        sb.setlength(0);
        sb.append(calculatejavaclientinterfacepackage());
        sb.append('.');
        if (stringhasvalue(tableconfiguration.getsqlprovidername())) {
            //支持mappername = "{0}sqlprovider" 等用法
            sb.append(messageformat.format(tableconfiguration.getsqlprovidername(), fullyqualifiedtable.getdomainobjectname()));
        } else {
            sb.append(fullyqualifiedtable.getdomainobjectname());
            sb.append("sqlprovider"); //$non-nls-1$
        }
        setmybatis3sqlprovidertype(sb.tostring());
    }
}

以上是所有的配置，下面设置maven启动

idea下(wl.jar是需要添加中文注释所修改的源码后打的jar)

pom.xml

            <plugin>
                <groupid>org.mybatis.generator</groupid>
                <artifactid>mybatis-generator-maven-plugin</artifactid>
                <version>1.3.5</version>
                <dependencies>
                    <dependency>
                        <groupid>mysql</groupid>
                        <artifactid>mysql-connector-java</artifactid>
                        <version>5.1.30</version>
                    </dependency>
                    <dependency>
                        <groupid>mygenerator</groupid>
                        <artifactid>com.mybatis.generator.wl</artifactid>
                        <version>1.0</version>
                        <scope>system</scope>
                        <systempath>${basedir}\src\main\webapp\web-inf\lib\com.mybatis.generator.wl.jar</systempath>
                    </dependency>
                </dependencies>
                <configuration>
                    <!--配置文件的路径-->
                    <configurationfile>${basedir}/src/main/resources/generatorconfig.xml</configurationfile>
                    <!--允许移动生成的文件-->
                    <verbose>true</verbose>
                    <!--允许覆盖生成的文件-->
                    <overwrite>true</overwrite>
                </configuration>
            </plugin>

maven配置

command line:

mybatis-generator:generate

eclipse下

pom.xml配置同上

goals

mybatis-generator:generate

注意：maven方式启动的话，上面geterator.properties里的project与resource 需要去掉项目名称。

generatorconfig.xml里面targetruntime与自定义注释的java文件配置的是修改完源码导入到项目中jar的路径。

3、如果开发工具为eclipse

可以安装generator的插件，然后生成generatorconfig.xml进行修改配置。

最后通过右键就可以运行。

自动生成mybatis映射文件工具

问题

总是自己写crud的操作太烦躁了，还不如直接自动生成一下curd的操作了，自己写查询的操作，接下来就提供给一个很好用的快捷生成mapper和mapper映射文件的工具类，将这个工具xml文件直接放到resource文件夹下就可以了!!

<build>
        <finalname>com.jimi.house</finalname>
        <plugins>
            <plugin>
                <groupid>org.apache.maven.plugins</groupid>
                <artifactid>maven-compiler-plugin</artifactid>
                <version>3.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <compilerarguments>
                        <verbose/>
                        <bootclasspath>${java.home}/lib/rt.jar;${java.home}/lib/jce.jar</bootclasspath>
                    </compilerarguments>
                    <!--<encoding>utf-8</encoding>-->
                </configuration>
            </plugin>
 
            <plugin>
                <groupid>org.mybatis.generator</groupid>
                <artifactid>mybatis-generator-maven-plugin</artifactid>
                <version>1.3.2</version>
                <configuration>
                    <verbose>true</verbose>
                    <overwrite>true</overwrite>
                </configuration>
            </plugin>
        </plugins>
    </build>

<?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>
    <!-- 数据库驱动:选择你的本地硬盘上面的数据库驱动包-->
    <classpathentry  location="d:/apache-maven-3.5.0/repo/mysql/mysql-connector-java/5.1.35/mysql-connector-java-5.1.35.jar"/>
    <context id="db2tables"  targetruntime="mybatis3">
        <commentgenerator>
            <property name="suppressdate" value="true"/>
            <!-- 是否去除自动生成的注释 true：是 ： false:否 -->
            <property name="suppressallcomments" value="true"/>
        </commentgenerator>
        <!--数据库链接url，用户名、密码 -->
        <jdbcconnection driverclass="com.mysql.jdbc.driver" connectionurl="jdbc:mysql://localhost:3306/identity" userid="root" password="root">
        </jdbcconnection>
        <javatyperesolver>
            <property name="forcebigdecimals" value="false"/>
        </javatyperesolver>
        <!-- 生成模型的包名和位置-->
        <javamodelgenerator targetpackage="com.chaimao.newparent.entity" targetproject="src/main/java">
            <property name="enablesubpackages" value="true"/>
            <property name="trimstrings" value="true"/>
        </javamodelgenerator>
        <!-- 生成映射文件的包名和位置-->
        <sqlmapgenerator targetpackage="mapper" targetproject="src/main/resources">
            <property name="enablesubpackages" value="true"/>
        </sqlmapgenerator>
        <!-- 生成dao的包名和位置-->
        <javaclientgenerator type="xmlmapper" targetpackage="com.chaimao.newparent.mapper" targetproject="src/main/java">
            <property name="enablesubpackages" value="true"/>
        </javaclientgenerator>
        <!-- 要生成的表 tablename是数据库中的表名或视图名 domainobjectname是实体类名-->
        <table tablename="identity_record" domainobjectname="identityrecord" enablecountbyexample="false" enableupdatebyexample="false" enabledeletebyexample="false" enableselectbyexample="false" selectbyexamplequeryid="false"></table>
    </context>
</generatorconfiguration>

以上为个人经验，希望能给大家一个参考，也希望大家多多支持。