Java

Question

我正在尝试运行使用网络服务的 curl 命令我正在运行ning:

String curl = "curl -X POST --header 'Content-Type: application/json' --header 'Accept: application/json' -d '{\"field1\": \"value1\", \"field2\": \"value2\"}' 'http://localhost:8080/service'";
System.out.println(curl);
try {
    Runtime runtime = Runtime.getRuntime();
    Process process = runtime.exec(curl);
    process.waitFor();
} catch (Exception e) {
    e.printStackTrace();
}

如果我从 Sysout 复制日志消息并将其粘贴到我的终端上，它运行是预期的，但是当我运行 java 代码时，它似乎return 来自代理的 html 页面未找到服务。

我是否需要为它从 java 添加其他内容到运行？

Answer 1

问题是您没有让它读取输出。我修改了您的代码，因此它应该可以工作。我不是 100% 确定，因为出于某种原因我无法正确测试它。

编辑 - 有效，我只是执行了错误的命令！这应该适合你。

String curl = "curl -X POST --header 'Content-Type: application/json' --header 'Accept: application/json' -d '{\"field1\": \"value1\", \"field2\": \"value2\"}' 'http://localhost:8080/service'";
System.out.println(curl);
try {
    Runtime runtime = Runtime.getRuntime();
    Process process = runtime.exec(curl);
    process.waitFor();
    BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream())); //BufferedReader to read the output
    StringBuilder sb = new StringBuilder(); //What will hold the entire console output
    String line = ""; //What will hold the text for a line of the output
    while ((line = reader.readLine()) != null) { //While there is still text to be read, read it
        sb.append(line + "\n"); //Append the line to the StringBuilder
    }
    System.out.println(sb); //Print out the full output
} catch (Exception e) {
    e.printStackTrace();
}

编辑 - 使用 ProcessBuilder 而不是 Runtime

的新代码

String curl = "curl -X POST --header 'Content-Type: application/json' --header 'Accept: application/json' -d '{\"field1\": \"value1\", \"field2\": \"value2\"}' 'http://localhost:8080/service'";
ProcessBuilder builder = new ProcessBuilder("/bin/bash", "-c", curl);
builder.redirectErrorStream(true);
Process p = builder.start();
StringBuilder sb = new StringBuilder();
BufferedReader r = new BufferedReader(new InputStreamReader(p.getInputStream()));
String line;
int linenum = 0;
while (true) {
    linenum++;
    line = r.readLine();
    if (line == null) {
        break;
    }
    sb.append(line);
}
System.out.println(sb);

Java - 使用运行时运行 curl 命令被代理阻止

Java - Using Runtime to run curl command gets blocked by proxy

ubuntu

curl

java-8

ubuntu-14.04