bug: JDK17下Patch方法报错 java.lang.reflect.InaccessibleObjectException:

[Mujio-killer]

代码如下：

    private HttpResponse doReq(Method method, String apiPath, ContentType type, Object body) {
        HttpRequest request = HttpRequest.of(basePath + apiPath)
                .setMethod(method)
                .header(CONTENT_TYPE, type.getValue());
        if (ObjectUtil.isNotEmpty(body)) {
            request.body(JSONUtil.toJsonStr(body), type.getValue());
        }

        return request.execute();
    }

传入patch方法时报错：

java.lang.reflect.InaccessibleObjectException: Unable to make field protected java.lang.String java.net.HttpURLConnection.method accessible: module java.base does not "opens java.net" to unnamed module @34e9fd99
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354)
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
	at java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:178)
	at java.base/java.lang.reflect.Field.setAccessible(Field.java:172)
	at cn.hutool.core.util.ReflectUtil.setAccessible(ReflectUtil.java:1114)
	at cn.hutool.core.util.ReflectUtil.setFieldValue(ReflectUtil.java:350)
	at cn.hutool.core.util.ReflectUtil.setFieldValue(ReflectUtil.java:319)
	at cn.hutool.http.HttpConnection.reflectSetMethod(HttpConnection.java:562)
	at cn.hutool.http.HttpConnection.setMethod(HttpConnection.java:138)
	at cn.hutool.http.HttpRequest.initConnection(HttpRequest.java:1224)
	at cn.hutool.http.HttpRequest.doExecute(HttpRequest.java:1187)
	at cn.hutool.http.HttpRequest.execute(HttpRequest.java:1052)
	at cn.hutool.http.HttpRequest.execute(HttpRequest.java:1028)
...

[looly]

Hutool为了让JDK支持patch方法，通过反射修改了java.net.HttpURLConnection中的数组，JDK17中对反射使用做了严格限制，导致反射失败。

你可以：

1. 使用HttpClient之类的库避免使用JDK的
2. 使用JVM启动参数允许反射：

--add-opens java.base/java.net=ALL-UNNAMED --add-opens java.base/java.lang.reflect=ALL-UNNAMED