Mybatis generator生成工具簡(jiǎn)單介紹

1、mybatis generator生成工具簡(jiǎn)單介紹mybatis generator生成工具容易介紹mybatis generator 其主要的功能就是便利，快捷的創(chuàng)建好dao，entry，xml 加快了開發(fā)速度，用法方面按照其提供的規(guī)章配置好就ok這里還有一個(gè)重要的開發(fā)場(chǎng)景，開發(fā)過(guò)程中，對(duì)數(shù)據(jù)庫(kù)的操作絕對(duì)無(wú)數(shù)，比如新增字段什么的，你只要將原先自動(dòng)生成的一套代碼刪除，重新再生成一份，這就完善解決了，但是這樣做的前提是，你必需對(duì)生成后的代碼不改動(dòng)，只是用法。不需要想手動(dòng)開發(fā)寫代碼那樣處處改代碼，還不安改漏地方。其實(shí)這個(gè)的實(shí)現(xiàn)方式也是五光十色的，寫一種比較頻繁的主要流程第一步：添加依靠主要是jdb

2、c和generator org.mybatis.generator mybatis-generator-core 1.3.6 mysql mysql-connector-java 5.1.38 其次步：配置 generatorconfig.xml這個(gè)文件主要是對(duì) 從哪來(lái)，到哪去的描述，還有一些特別要求的配置 第三步：主要看你個(gè)人的需求，對(duì)注釋，分頁(yè)啥的有啥要求不，可以重寫幾個(gè)辦法對(duì)其舉行改造主要舉幾個(gè)例子對(duì)注釋的修改 newbatisgeneratorpublic class newbatisgenerator extends defaultcommentgenerator private p

3、roperties properties; private properties systempro; private boolean suppressdate; private boolean suppressallcomments; private string currentdatestr; public newbatisgenerator() super(); properties = new properties(); systempro = system.getproperties(); suppressdate = false; suppressallcomments = fal

4、se; currentdatestr = (new simpledateformat("yyyy-mm-dd").format(new date(); /* * 對(duì)類的注解 * param toplevelclass * param introspectedtable */ override public void addmodelclasscomment(toplevelclass toplevelclass, introspectedtable introspectedtable) toplevelclass.addjavadocline(&qu

5、ot;/*"); toplevelclass.addjavadocline(" * 這是mybatis generator自動(dòng)生成的model class."); stringbuilder sb = new stringbuilder(); sb.append(" * 對(duì)應(yīng)的數(shù)據(jù)表是 : "); sb.append(introspectedtable.getfullyqualifiedtable(); toplevelclass.addjavadocline(sb.tostring(); string

6、tableremarks = introspectedtable.getremarks(); if (!stringutils.isempty(tableremarks) sb.setlength(0); sb.append(" * 數(shù)據(jù)表注釋 : "); sb.append(tableremarks); toplevelclass.addjavadocline(sb.tostring(); sb.setlength(0); sb.append(" * author "); sb.append(systempro.getp

7、roperty(""); toplevelclass.addjavadocline(sb.tostring(); string curdatestring = (new simpledateformat("yyyy-mm-dd hh:mm:ss").format(new date(); sb.setlength(0); sb.append(" * date "); sb.append(curdatestring); toplevelclass.addjavadoclin

8、e(sb.tostring(); toplevelclass.addjavadocline(" */"); /* * 生成的實(shí)體增強(qiáng)字段的中文注釋 */ public void addfieldcomment(field field, introspectedtable introspectedtable, introspectedcolumn introspectedcolumn) if (suppressallcomments) return; stringbuilder sb = new stringbuilder(); field.addjavado

9、cline("/*"); sb.append(" * "); sb.append(introspectedcolumn.getremarks(); field.addjavadocline(sb.tostring().replace("n", " "); field.addjavadocline(" */"); 對(duì)分頁(yè)的添加 mysqlpaginationplugin 自動(dòng)生成帶分頁(yè)插件public class my

10、sqlpaginationplugin extends pluginadapter public mysqlpaginationplugin() public boolean modelexampleclassgenerated(toplevelclass toplevelclass, introspectedtable introspectedtable) this.addlimit(toplevelclass, introspectedtable, "limitstart"); this.addlimit(toplevelclass, introspec

11、tedtable, "limitsize"); return super.modelexampleclassgenerated(toplevelclass, introspectedtable); public boolean sqlmapselectbyexamplewithoutblobselementgenerated(xmlelement element, introspectedtable introspectedtable) xmlelement isnotnullelement = new xmlelement("if&

12、;quot;); isnotnullelement .addattribute(new attribute("test", "limitstart != null and limitsize >= 0"); isnotnullelement.addelement(new textelement("limit limitstart , limitsize"); element.addelement(isnotnullelement); return super.sqlmapselec

13、tbyexamplewithoutblobselementgenerated(element, introspectedtable); public boolean sqlmapselectbyexamplewithblobselementgenerated(xmlelement element, introspectedtable introspectedtable) xmlelement isnotnullelement = new xmlelement("if"); isnotnullelement .addattribute(new attribut

14、e("test", "limitstart != null and limitsize >= 0"); isnotnullelement.addelement(new textelement("limit limitstart , limitsize"); element.addelement(isnotnullelement); return super.sqlmapselectbyexamplewithblobselementgenerated(element, introsp

15、ectedtable); private void addlimit(toplevelclass toplevelclass, introspectedtable introspectedtable, string name) commentgenerator commentgenerator = this.context.getcommentgenerator(); field field = new field(); field.setvisibility(javavisibility.protected); field.settype(primitivetypewrapper.getin

16、tegerinstance(); field.setname(name); commentgenerator.addfieldcomment(field, introspectedtable); toplevelclass.addfield(field); char c = name.charat(0); string camel = character.touppercase(c) + name.substring(1); method method = new method(); method.setvisibility(javavisibility.public); method.set

17、name("set" + camel); method.addparameter(new parameter(primitivetypewrapper.getintegerinstance(), name); stringbuilder sb = new stringbuilder(); sb.append("this."); sb.append(name); sb.append(" = "); sb.append(name); sb.append("&quot

18、;); method.addbodyline(sb.tostring(); commentgenerator.addgeneralmethodcomment(method, introspectedtable); toplevelclass.addmethod(method); method gettermethod = abstractjavagenerator.getgetter(field); commentgenerator.addgeneralmethodcomment(gettermethod, introspectedtable); toplevelclass.addmethod(gettermethod); public boolean validate(list warnings) return true; /* * 生成mapper.xml,文件內(nèi)容會(huì)被清空再寫入 * */ override public boolean sqlmapgenerated(generatedxmlfile sqlmap, introspectedtable introspectedtable) sql