无法通过java Runtime.getRuntime（）执行CURL命令。exec（） [英] Unable to execute CURL command through java Runtime.getRuntime().exec()
问题描述
我正在使用java执行curl命令。
curl -i --userOAMADMIN_tenant_358922247351079_svc_358922247369079_APPID：Iuj.2swilg5fhv HContent-Type：application / json-HAccept：application / json-H'X-USER-IDENTITY-DOMAIN-NAME：tenant_358922247351079'-HX-RESOURCE-IDENTITY-DOMAIN-NAME：tenant_358922247351079 -request GEThttps://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，但我的stdoutput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 +\\\
）;
}
} catch（Exception e）{
e.printStackTrace（）;
}
return output.toString（）;
}
尝试手动执行curl命令，
然后我打印标准错误，我可以看到：
[testng] error line =
[testng]错误行= curl：（6）无法解析主机'application'
[testng]错误行=
[testng]应用程序'
[testng]错误行=
[testng]错误行= curl：（6）无法解析主机'tenant_359516638431079'
[testng]错误行=
[testng] error line = curl：（6）无法解析主机'tenant_359516638431079''
[testng]错误行=
[testng]错误行= curl：当curl命令手动执行时，它的工作正常，那么为什么不通过Runtime.getRuntime（）？
请建议！任何帮助将不胜感激。
解决方案看起来像数据shell /控制台解释/更改字符。例如以下行：
-HContent-Type：application / json
...似乎被解释为三个不同的参数：
-H Content- 和应用程序和 / json 。
尝试使用以下格式将命令字符串分解成组件数组：
exec（String [] cmdarray）
这样，shell /控制台就会清楚哪些参数被分组在一起。
这里是groovy中的测试，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 -HAccept：application / json--request GEThttps://education.cloudant.com/'''）
assert response ['sout'] =='
assert response ['serr']。startsWith（'curl：（6）无法解析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}'）
['serr'] ==''
I am executing a curl command using java.
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"
I want to get the output of this curl command in my code,but my stdoutput is coming out to be empty.
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();
}
Tried executing the curl command manually, its working fine.
Then I printed the standard error, and I can see:
[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
When curl command is executed manually, its working fine then why not through Runtime.getRuntime() ?
Kindly suggest!! Any help will be appreciated.
解决方案 It seems like the data shell/console is interpreting/changing characters. For example the following line:
-H "Content-Type: application/json"
... seems to be getting interpreted as three different arguments:
-H Content-Type: and application and /json by the shell/console.
Try breaking the command string down into an array of components using the format:
exec(String[] cmdarray)
That way it will be clear to the shell/console which arguments are grouped together.
Here is a test in groovy that proves the point:
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'] == ''
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