Question

以下命令在我的终端上可以正常工作：

gcloud日志读取为"logName=projects/logs/java.log AND labels.component=projet1 AND textPayload=\"End: of query.\"

但是在通过inputstream执行时返回空Runtime.getRuntime().exec

Runtime rt = Runtime.getRuntime();
Process process = rt.exec(new String[]{"gcloud", "logging" ,"read" ,"logName=projects/logs/java.log AND labels.component=project1 AND textPayload=\"End: of query.\""});
BufferedReader is = new BufferedReader(new 
InputStreamReader(process.getInputStream()));

更新：我尝试使用processBuilder，命令参数如下所示：

命令是：[gcloud，日志记录，读取，'logName = projects / logs / java.log AND labels.component = project1 AND textPayload =“结尾：查询结束。” AND timestamp>“ 2018-11-15T15：12：11Z”']

但是执行时出现以下错误：

错误：（gcloud.logging.read）INVALID_ARGUMENT：无法解析的过滤器：第1行第147列的语法错误，令牌为““ 2018-11-15T15：12：11Z”“

Answer 1

您需要两次\转义，这在Java中很常见，当我们调用另一个需要转义的东西（正则表达式或其他）

尝试一下（我只将\“替换为\\”）

Runtime rt = Runtime.getRuntime();
Process process = rt.exec(new String[]{"gcloud", "logging" ,"read"  
,"logName=projects/logs/java.log AND labels.component=project1 AND textPayload=\\\"End: of query.\\\""});
BufferedReader is = new BufferedReader(new 
InputStreamReader(process.getInputStream()));

\：转至\
\”：转至“
因此\\“将在runtime.exec中转义为\”

Java Runtime.getRuntime（）。exec无法在命令中使用双引号

1 个答案: