java 实现 Dmp文件导入导出

场景需求

       利用java完成Oracle  dmp文件的导入和导出

环境

       jdk1.8 , oracle服务端、客户端（批pl/sql）

代码解析

      直接上导入导出的工具类了，里面有些结果集和参数，是一些封装类，上传太麻烦，在这里就不献上了，仔细看下测试类就能明白了

   

package com.tydic.util;

import com.google.common.base.Joiner;
import com.tydic.pojo.DsOracleDmp;
import com.tydic.pojo.Result;

import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.List;

/**
 * @author dengyichao
 * @Title: OracleDmpUtil
 * @Package: com.tydic.util
 * @Description:
 * @date 2018/5/28  17:10
 */
public class OracleDmpUtil {

    /**
     *  @Author:    dengyichao
     *  @Date:  2018/5/28  17:34
     *  @param dsTables   数据源对象（包含表）
     *  @Description:  从oracle中导出dmp文件
     */
    public static Result generateDmp(DsOracleDmp dsTables){
        /*表导出语句  如果要导出多表则在 tables参数里添加 例如
        String commandBuf = "exp userid=system/system@localhost:1521/ORCL file=E://dyc.dmp tables=(TEST1)";*/
        StringBuffer commandBuf = new StringBuffer("exp userid=");
        commandBuf.append(dsTables.getDbUsername() + "/");
        commandBuf.append(dsTables.getDbPassword() + "@");
        commandBuf.append(dsTables.getDbAddress() + "/");
        commandBuf.append(dsTables.getServiceName());
        commandBuf.append(" file=" + Constants.DMP_UP_FILE + "//" + dsTables.getFileName() + " tables=(");
        List<String> tabNameList = dsTables.getTabNameList();
        if(null != tabNameList && tabNameList.size() > 0){
            tabNameList.forEach(e -> {
                commandBuf.append(e + ",");
            });
            commandBuf.deleteCharAt(commandBuf.length() - 1);
        }else{
            return ResultUtil.fail("导出失败,没有导出的表名");
        }
        commandBuf.append(")");
        String[] cmds ={"cmd","/C",commandBuf.toString()}  ;
        Joiner joiner = Joiner.on(" ").skipNulls();
        System.out.println(joiner.join(cmds));
        Process process = null;
        try {
            process = Runtime.getRuntime().exec(cmds);
        } catch (IOException e) {
            e.printStackTrace();
            return ResultUtil.fail("导出失败");
        }
        boolean shouldClose = false;
        try {
            InputStreamReader isr = new InputStreamReader(process
                    .getErrorStream());
            BufferedReader br = new BufferedReader(isr);
            String line = null;
            while ((line = br.readLine()) != null) {
                System.out.println(line);
                if (line.indexOf("????") != -1) {
                    shouldClose = true;
                    break;
                }
            }
        } catch (IOException ioe) {
            shouldClose = true;
            return ResultUtil.fail("导出失败");
        }
        if (shouldClose)
            process.destroy();
        int exitVal;
        try {
            exitVal = process.waitFor();
            System.out.print(exitVal);
        } catch (InterruptedException e) {
            e.printStackTrace();
            return ResultUtil.fail("导出失败");
        }
        return  ResultUtil.success();
    }


    public static Result impDmp(DsOracleDmp dsTables){
        String info="";
        String filepath = Constants.DMP_UP_FILE + File.separator  + dsTables.getFileName();
        //String commandBuf = "imp dengyichao/system@localhost:1521/ORCL fromuser=yhgl touser=dengyichao file=d://xxx.dmp ignore=y";
        StringBuffer commandBuf = new StringBuffer("imp ");
        commandBuf.append(dsTables.getDbUsername() + "/");
        commandBuf.append(dsTables.getDbPassword() + "@");
        commandBuf.append(dsTables.getDbAddress() + "/");
        commandBuf.append(dsTables.getServiceName());
        commandBuf.append(" fromuser=" + dsTables.getImpDmpUserName());
        commandBuf.append(" touser=" + dsTables.getDbUsername());
        commandBuf.append(" file=" + filepath);
        commandBuf.append(" ignore=y");
        String[] cmds ={"cmd","/C",commandBuf.toString()};
        Process process = null;
        try {
            process = Runtime.getRuntime().exec(cmds);
        } catch (IOException e) {
            e.printStackTrace();
            return ResultUtil.fail("导入失败");
        }
        boolean shouldClose = false;
        try {
            InputStreamReader isr = new InputStreamReader(process
                    .getErrorStream());
            BufferedReader br = new BufferedReader(isr);
            String line = null;
            while ((line = br.readLine()) != null) {
                System.out.println(line);
                if (line.indexOf("????") != -1) {
                    shouldClose = true;
                    break;
                }
            }
        } catch (IOException ioe) {
            shouldClose = true;
            return ResultUtil.fail("导入失败");
        }
        if (shouldClose)
            process.destroy();
        int exitVal;
        try {
            exitVal = process.waitFor();
            System.out.print(exitVal);
        } catch (InterruptedException e) {
            e.printStackTrace();
            return ResultUtil.fail("导入失败");
        }
        return ResultUtil.success();
    }
}

测试类

package com.tydic.util;

import com.google.common.collect.ImmutableList;
import com.tydic.pojo.DsOracleDmp;
import org.junit.Test;

/**
 * @author dengyichao
 * @Title: OracleDmpUtilTest
 * @Package: com.tydic.util
 * @Description:
 * @date 2018/5/29  9:05
 */
public class OracleDmpUtilTest {
    @Test
    public void generateDmp() throws Exception {
        DsOracleDmp dod = new DsOracleDmp();
        dod.setFileName("test1.dmp");
        dod.setTabNameList(ImmutableList.of("test1"));
        dod.setDbUsername("system");
        dod.setDbPassword("admin");
        dod.setDbAddress("localhost:1521");
        dod.setServiceName("ORCL");
        OracleDmpUtil.generateDmp(dod);
    }

    @Test
    public void impDmp(){
        DsOracleDmp dod = new DsOracleDmp();
        dod.setDbUsername("dengyichao");
        dod.setDbPassword("dengyichao");
        dod.setDbAddress("localhost:1521");
        dod.setServiceName("ORCL");
        dod.setImpDmpUserName("yhgl");
        dod.setFileName("test3.dmp");
        OracleDmpUtil.impDmp(dod);
    }
}

大功告成