java里面使用RunTime.getRuntime.exec

àì夳堔傛蜴生んèń 2022-03-01 09:28 310阅读 0赞

## 1.这个工具可以执行脚本命令 ##

比如我在window下面用java执行dos命令。

## 2.用法 ##

我这里就不上具体教程了，提供几个学习地址：

[https://www.cnblogs.com/tohxyblog/p/6501396.html][https_www.cnblogs.com_tohxyblog_p_6501396.html]

[https://www.cnblogs.com/fclbky/p/6112180.html][https_www.cnblogs.com_fclbky_p_6112180.html]

[https://blog.csdn.net/weixin\_35852328/article/details/78338976][https_blog.csdn.net_weixin_35852328_article_details_78338976]

下面是java api文档，在包：javax.lang下面可以找到这个工具的说明

[http://tool.oschina.net/apidocs/apidoc?api=jdk\_7u4][http_tool.oschina.net_apidocs_apidoc_api_jdk_7u4]

## 3.注意项 ##

a.指令命令之后，需要去把缓存区的内容读走，不然会阻塞

b.执行指令的时候需要看看是否全局可用

## 4.自己代码里面的例子 ##

String tempCmd = "dexp " + userName + "/" + password + "@" + hostIP + ":" + port + " FILE=" + fileName + " DIRECTORY=" + filePath + " FULL=Y";
    String[] cmds = { "cmd", "/c", tempCmd };
    if(!System.getProperties().getProperty("os.name").toString().toUpperCase().contains("WIN")) {
    	System.out.println("not windows");
    	cmds = new String[] { "/bin/sh", "-c", tempCmd };
    }
    System.out.println(tempCmd);
    		
    Process process = Runtime.getRuntime().exec(cmds);
    BufferedReader reader = new BufferedReader(newInputStreamReader(process.getInputStream()));
    String line;
    while ((line = reader.readLine()) != null) {
    	System.out.println(line);
    }

[https_www.cnblogs.com_tohxyblog_p_6501396.html]: https://www.cnblogs.com/tohxyblog/p/6501396.html
[https_www.cnblogs.com_fclbky_p_6112180.html]: https://www.cnblogs.com/fclbky/p/6112180.html
[https_blog.csdn.net_weixin_35852328_article_details_78338976]: https://blog.csdn.net/weixin_35852328/article/details/78338976
[http_tool.oschina.net_apidocs_apidoc_api_jdk_7u4]: http://tool.oschina.net/apidocs/apidoc?api=jdk_7u4