找不到jmxRemoteURL包含非ASCII字符的原因

Question

"C:\Program Files\Apache Software Foundation\Tomcat 9.0\bin\catalina.bat" run
[2019-09-07 10:58:59,049] Artifact test:war exploded: Waiting for server connection to start artifact deployment...
Using CATALINA_BASE:   "C:\Users\pcs\.IntelliJIdea2018.3\system\tomcat\Tomcat_9_0_12_test"
Using CATALINA_HOME:   "C:\Program Files\Apache Software Foundation\Tomcat 9.0"
Using CATALINA_TMPDIR: "C:\Program Files\Apache Software Foundation\Tomcat 9.0\temp"
Using JRE_HOME:        "C:\Program Files\Java\jdk-10.0.1"
Using CLASSPATH:       "C:\Program Files\Apache Software Foundation\Tomcat 9.0\bin\bootstrap.jar;C:\Program Files\Apache Software Foundation\Tomcat 9.0\bin\tomcat-juli.jar"
Error: Exception thrown by the agent : java.net.MalformedURLException: Service URL contains non-ASCII character 0x6f1

public class JMXServiceURL implements Serializable {

    private static final long serialVersionUID = 8173364409860779292L;

    /**
     * Constructs a JMXServiceURL by parsing a Service URL
     * string.
     *
     * @param serviceURL the URL string to be parsed.
     *
     * @exception NullPointerException if  serviceURL is
     * null.
     *
     *  @exception MalformedURLException if serviceURL
     * does not conform to the syntax for an Abstract Service URL or
     * if it is not a valid name for a JMX Remote API service.  A
     * JMXServiceURL must begin with the string
     * "service:jmx:" (case-insensitive).  It must not
     * contain any characters that are not printable ASCII characters.
     */
    public JMXServiceURL(String serviceURL) throws MalformedURLException {
        final int serviceURLLength = serviceURL.length();

        /* Check that there are no non-ASCII characters in the URL,
           following RFC 2609.  */
        for (int i = 0; i < serviceURLLength; i++) {
            char c = serviceURL.charAt(i);
            if (c < 32 || c >= 127) {
                throw new MalformedURLException("Service URL contains " +
                                                "non-ASCII character 0x" +
                                                Integer.toHexString(c));
            }
        }

*最后这是我在Intellij Idea控制台中的完整输出：

"C:\Program Files\Apache Software Foundation\Tomcat 9.0\bin\catalina.bat" run
[2019-09-07 10:58:59,049] Artifact test:war exploded: Waiting for server connection to start artifact deployment...
Using CATALINA_BASE:   "C:\Users\pcs\.IntelliJIdea2018.3\system\tomcat\Tomcat_9_0_12_test"
Using CATALINA_HOME:   "C:\Program Files\Apache Software Foundation\Tomcat 9.0"
Using CATALINA_TMPDIR: "C:\Program Files\Apache Software Foundation\Tomcat 9.0\temp"
Using JRE_HOME:        "C:\Program Files\Java\jdk-10.0.1"
Using CLASSPATH:       "C:\Program Files\Apache Software Foundation\Tomcat 9.0\bin\bootstrap.jar;C:\Program Files\Apache Software Foundation\Tomcat 9.0\bin\tomcat-juli.jar"
Error: Exception thrown by the agent : java.net.MalformedURLException: Service URL contains non-ASCII character 0x6f1
jdk.internal.agent.AgentConfigurationError: java.net.MalformedURLException: Service URL contains non-ASCII character 0x6f1
    at jdk.management.agent/sun.management.jmxremote.ConnectorBootstrap.startRemoteConnectorServer(ConnectorBootstrap.java:491)
    at jdk.management.agent/jdk.internal.agent.Agent.startAgent(Agent.java:450)
    at jdk.management.agent/jdk.internal.agent.Agent.startAgent(Agent.java:621)
Caused by: java.net.MalformedURLException: Service URL contains non-ASCII character 0x6f1
    at java.management/javax.management.remote.JMXServiceURL.<init>(JMXServiceURL.java:157)
    at jdk.management.agent/sun.management.jmxremote.ConnectorBootstrap.exportMBeanServer(ConnectorBootstrap.java:846)
    at jdk.management.agent/sun.management.jmxremote.ConnectorBootstrap.startRemoteConnectorServer(ConnectorBootstrap.java:479)
    ... 2 more
Disconnected from server

如果我错过了什么话请告诉我。非常感谢你的大力帮助。

Answer 1

通过深入研究，我在网上将十六进制转换为十进制，实现了(0x6F1)等于（1777）。似乎有一个非ASCII字符，它的（char toint)转换结果是1777。

最后，通过转换（int到char)，我意识到char实际上是非ASCII的：）

（正如CrazyCoder所发现的）它是扩展的阿拉伯-印度数字1

null

int a = 1777;
char c = (char)a;
System.out.println (c);