无法通过javaRuntime.getRuntime（）. exec（）执行CURL命令

Question

我正在使用java执行一个curl命令。

curl -i --user "OAMADMIN_tenant_358922247351079_svc_358922247369079_APPID:Iuj.2swilg5fhv" -H "Content-Type: application/json" -H "Accept: application/json" -H 'X-USER-IDENTITY-DOMAIN-NAME: tenant_358922247351079' -H "X-RESOURCE-IDENTITY-DOMAIN-NAME: tenant_358922247351079" --request GET "https://slc04yre-1.dev.oraclecorp.com:4443/oam/services/rest/11.1.2.0.0/oauth/admin/Clients?name=myMCS_svc_358922247369079_MCS_Client_OAUTHCLIENT"

我想在我的代码中获取这个curl命令的输出，但是我的stdoutout是空的。

 private static String executeCommand(String command) {
        StringBuffer output = new StringBuffer();

        Process p;
        try {
            p = Runtime.getRuntime().exec(command);

            BufferedReader reader = new BufferedReader(new InputStreamReader(
                    p.getInputStream()));
            //p.waitFor();
            String line = "";
            while ((line = reader.readLine()) != null) {
                System.out.println("line="+line);
                output.append(line + "\n");
            }

        } catch (Exception e) {
            e.printStackTrace();
        }

        return output.toString();

    }

尝试手动执行curl命令，工作正常。然后我打印了标准误差，我可以看到：

   [testng] error line=
   [testng] error line=curl: (6) Couldn't resolve host 'application'
   [testng] error line=
   [testng] error line=curl: (6) Couldn't resolve host 'application'
   [testng] error line=
   [testng] error line=curl: (6) Couldn't resolve host 'tenant_359516638431079''
   [testng] error line=
   [testng] error line=curl: (6) Couldn't resolve host 'tenant_359516638431079"'
   [testng] error line=
   [testng] error line=curl: (1) Unsupported protocol: "https

当curl命令被手动执行时，它工作得很好，那么为什么不通过Runtime.getRuntime()呢？

请建议！！任何帮助将不胜感激。

Answer 1

看起来数据外壳/控制台正在解释/更改字符。例如以下行：

-H “Content-Type： application/json”

...似乎被解释为三种不同的观点:

-H内容类型：和应用程序，以及/json。

尝试使用以下格式将命令字符串分解为组件数组:

exec（String[]cmdarray）

这样，shell/控制台就可以清楚地知道哪些参数被分组在一起。

下面是groovy中的一个测试，它证明了这一点：

def Object executeCommand(command) {

   def proc = Runtime.getRuntime().exec(command);
   def sout = new StringBuffer()
   def serr = new StringBuffer()

   proc.consumeProcessOutput(sout, serr)
   proc.waitFor()

   return [ 'sout':sout.toString(), 'serr':serr.toString() ]
}   

response = executeCommand('''curl --silent --show-error -H "Accept: application/json" --request GET "https://education.cloudant.com/"''')
assert response['sout'] == ''
assert response['serr'].startsWith( 'curl: (6) Could not resolve host: application' )

response = executeCommand(['curl', '--silent',  '--show-error',  '-H', 'Accept: application/json',  '--request', 'GET', 'https://education.cloudant.com/'] as String[] )
assert response['sout'].startsWith('{"couchdb":"Welcome","version":"1.0.2","cloudant_build":"2367"}')
assert response['serr'] == ''