結合hibernate與mybatis各自優勢自定義web應用擴展（二）

時間 2020-01-12

標籤結合 hibernate mybatis 各自優勢自定義 web 應用擴展欄目 Hibernate 简体版

原文原文鏈接

接上java

上一篇解決了建表繁瑣的問題node

接上web

上一篇解決了建表繁瑣的問題sql

這一篇咱們將要解決的問題是：根據bean，自動生成mybatis結構，實現原子的增刪改查操做數據庫

繼續回顧mybatis的結構apache

一個接口對應一個xml，xml裏寫sql語句。那麼咱們將要完成的需求就是：根據bean生成相應的xml和inter瀏覽器

新建共享數據類commonsInter.javamybatis

package plug.gg.commons;

public class commonsInter {
    private static commonsInter va=new commonsInter();
    public  static commonsInter getObj(){
        return va;
    }
    /*全部的inter*/
    private String[] inter;
    /*全部的xml*/
    private String[] xml;

    public String[] getInter() {
        return inter;
    }

    public void setInter(String[] inter) {
        this.inter = inter;
    }

    public String[] getXml() {
        return xml;
    }

    public void setXml(String[] xml) {
        this.xml = xml;
    }
}

生成interapp

package plug.gg.commons;

import org.apache.ibatis.annotations.Param;
import org.dom4j.DocumentException;
import plug.gg.ggScan;
import plug.gg.ggThreadInter;

import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

public class ggCommonsInter {
    public List<String> beanList=new LinkedList<String>();
    public Map node=new HashMap();
    public ggCommonsInter() throws DocumentException{
        node=new ggScan().getXml(ggThreadInter.getVa().getContextEvent());
        for(String name:ggThreadInter.getVa().getBeanTableName()){
            //System.out.println(node.get("page")+"."+name);
            /*組裝bean路徑*/
            beanList.add(node.get("page")+"."+name);
        }
    }
    public void create(){
/*page*/
        String packages="package "+node.get("print-inter")+";";
        String imports[]=new String[beanList.size()];
/*import*/
        String impBatis="import org.apache.ibatis.annotations.Param;import java.util.List;";
        for(int i=0;i<beanList.size();i++) {
            imports[i] = "import " + beanList.get(i) + ";"+impBatis;
        }

        /*接口名*/
        String function[]=new String[beanList.size()];
        String interName[]=new String[beanList.size()];
        for(int i=0;i<beanList.size();i++){

            function[i]=packages+imports[i];
            function[i]=function[i]+"public interface "+ggThreadInter.getVa().getBeanTableName().get(i)+"Dao{\n";
/*數據庫插入的原子方法（即不可再分解的方法）*/
            function[i]=function[i]+"int add(@Param(\"name0\")String name,@Param(\"value0\")String value);\n";
/*數據庫刪除的原子方法（即不可再分解的方法）*/
            function[i]=function[i]+"int delete(@Param(\"name1\")String name,@Param(\"value1\")String value);\n";
/*數據庫更新的原子方法（即不可再分解的方法）*/
            function[i]=function[i]+"int update(@Param(\"name2\")String name,@Param(\"value2\")String value);\n";
/*數據庫查詢整表（即不可再分解的方法）*/
            function[i]=function[i]+"List<"+ggThreadInter.getVa().getBeanTableName().get(i)+"> allSelect();\n";
/*數據庫查詢的原子方法（即不可再分解的方法）*/
            function[i]=function[i]+""+ggThreadInter.getVa().getBeanTableName().get(i)+" isSelect(@Param(\"name3\")String name,@Param(\"value3\")String value);\n}";

        }
/*存儲變量*/
        commonsInter.getObj().setInter(function);

    }


}

同上生成xmldom

package plug.gg.commons;

import org.dom4j.DocumentException;
import plug.gg.ggScan;
import plug.gg.ggThreadInter;

import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

public class ggCommonsXml {
    public Map node=new HashMap();
    public List<String> beanList=new LinkedList<String>();
    public ggCommonsXml() throws DocumentException{
        node=new ggScan().getXml(ggThreadInter.getVa().getContextEvent());
        for(String name:ggThreadInter.getVa().getBeanTableName()){
            //System.out.println(node.get("page")+"."+name);
            beanList.add(node.get("page")+"."+name);
        }
    }
    public void create(){
/*頭部*/
        String header="<?xml version='1.0' encoding='UTF-8'?> <!DOCTYPE mapper PUBLIC '-//mybatis.org//DTD Mapper 3.0//EN' 'http://mybatis.org/dtd/mybatis-3-mapper.dtd'>";
        String[] fun=new String[beanList.size()];
        for(int i=0;i<commonsInter.getObj().getInter().length;i++){
/*namespace*/
            fun[i]=header+"<mapper namespace='"+node.get("print-inter")+"."+ggThreadInter.getVa().getBeanTableName().get(i)+"Dao'>\n";
/*和inter對應的sql*/
            fun[i]=fun[i]+"<insert id='add'>insert into "+ggThreadInter.getVa().getBeanTableName().get(i)+" (${name0}) values ('${value0}')</insert>\n";
            fun[i]=fun[i]+"<delete id='delete'>delete from "+ggThreadInter.getVa().getBeanTableName().get(i)+" where ${name1}='${value1}'</delete>\n";
            fun[i]=fun[i]+"<update id='update'>update "+ggThreadInter.getVa().getBeanTableName().get(i)+" set ${name2}='${value2}'</update>\n";
            fun[i]=fun[i]+"<select id='allSelect' resultType='"+node.get("page")+'.'+ggThreadInter.getVa().getBeanTableName().get(i)+"'>select * from "+ggThreadInter.getVa().getBeanTableName().get(i)+"</select>\n";
            fun[i]=fun[i]+"<select id='isSelect' resultType='"+node.get("page")+'.'+ggThreadInter.getVa().getBeanTableName().get(i)+"'>select  * from where ${name3}='${value3}'</select>\n";
            fun[i]=fun[i]+"</mapper>";

        }
/*存儲變量*/
        commonsInter.getObj().setXml(fun);
    }
}

一樣的須要一些配置gg.xml

完成以後須要存儲輸出爲.java和.xml

新建工具類printFile.java

package plug.gg.commons;

import javax.servlet.ServletContext;
import java.io.*;

public class printFile {
    public String newfile(String name,String path,String value) throws FileNotFoundException {
        
        OutputStream in=new FileOutputStream(new File(path+"/"+name));
        try {
            OutputStreamWriter out=new OutputStreamWriter(in, "utf-8");
            PrintWriter pw=new PrintWriter(out);
            StringBuilder tes=new StringBuilder(value);
            pw.println(tes.toString());
            pw.flush();
            pw.close();
        } catch (UnsupportedEncodingException e) {
            // TODO Auto-generated catch block
            System.out.println("error");
        }
        return path+"/"+name;
    }
}

轉存類ggCommonsPrint.java

package plug.gg.commons;

import org.dom4j.DocumentException;
import plug.gg.ggScan;
import plug.gg.ggThreadInter;
import sun.applet.Main;

import javax.servlet.ServletContextEvent;
import java.io.FileNotFoundException;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

public class ggCommonsPrint {
    private String printInter;
    private String printXml;
    public Map node=new HashMap();

    public List<String> beanList=new LinkedList<String>();

    public ggCommonsPrint(){
        try {
            node=new ggScan().getXml(ggThreadInter.getVa().getContextEvent());
            for(String name:ggThreadInter.getVa().getBeanTableName()){
                beanList.add(node.get("page")+"."+name);
            }
        } catch (DocumentException e) {
            e.printStackTrace();
        }
    }
    public void printInter(){
        ServletContextEvent contextEvent=ggThreadInter.getVa().getContextEvent();
        String prints=node.get("print-inter").toString().replace(".","/");
        String path=contextEvent.getServletContext().getRealPath("WEB-INF/classes/"+prints+"");

        /*源文件位置*/

        String disPath=contextEvent.getServletContext().getRealPath("");

        disPath=disPath.substring(0,disPath.indexOf(node.get("web-content").toString())+node.get("web-content").toString().length());
        prints=prints.replace("/","\\");
        disPath=disPath+"\\src\\main\\java\\"+prints;
        for(int i=0;i<commonsInter.getObj().getInter().length;i++){
            String name=ggThreadInter.getVa().getBeanTableName().get(i)+"Dao.java";
            String value=commonsInter.getObj().getInter()[i];
            try {
                /*String javaFile=new printFile().newfile(name,path,value);
                new compiler().tall(javaFile);*/
                new printFile().newfile(name,disPath,value);
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }
        }
    }
    public void printXml(){
        ServletContextEvent contextEvent=ggThreadInter.getVa().getContextEvent();
        String prints=node.get("print-xml").toString().replace(".","/");
        String path=contextEvent.getServletContext().getRealPath("WEB-INF/classes/"+prints+"");

        String disPath=contextEvent.getServletContext().getRealPath("");
        disPath=disPath.substring(0,disPath.indexOf(node.get("web-content").toString())+node.get("web-content").toString().length());
        prints=prints.replace("/","\\");
/*由於是maven結構因此是src/main/java*/
        disPath=disPath+"\\src\\main\\java\\"+prints;
        for(int i=0;i<commonsInter.getObj().getInter().length;i++){
            String name=ggThreadInter.getVa().getBeanTableName().get(i)+"Mapper.xml";
            String value=commonsInter.getObj().getXml()[i];
            try {
                /*String xmlFile=new printFile().newfile(name,path,value);*/

                new printFile().newfile(name,disPath,value);
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }
        }
    }
}

在ggLoderListener.java裏調用

package plug.gg;

import org.dom4j.DocumentException;
import plug.gg.commons.ggCommonsInter;
import plug.gg.commons.ggCommonsPrint;
import plug.gg.commons.ggCommonsXml;

import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;

public class ggLoaderListener extends ggThreadInter implements ServletContextListener{
	
	
	public ggLoaderListener() {
		
	}
	@Override
	public void contextDestroyed(ServletContextEvent arg0) {

	}
	@Override
	public void contextInitialized(ServletContextEvent arg0) {	
		new ggThreadBean().run(arg0);
		ggCreateTableSql.getObj().init(ggThreadInter.getVa().getSqlTable());
		ggThreadInter.getVa().setContextEvent(arg0);
		try {
			ggCommonsInter commonsInter=new ggCommonsInter();
			commonsInter.create();
			ggCommonsXml commonsXml=new ggCommonsXml();
			commonsXml.create();
			new ggCommonsPrint().printInter();
			new ggCommonsPrint().printXml();
		} catch (DocumentException e) {
			e.printStackTrace();
		}
	}
}

重啓服務觀察

已生成inter和xml

調試是否生效

瀏覽器打開相應地址，觀察數據庫

成功

到如今已經初步將開發工做大大下降，可是仍有瑕疵，由於生成的sql是原子操做，好比咱們要插入6個字段時要寫一個add和5個update

下節將在此基礎上再次封裝，將原子操做進行合成。